I have ListArray with number in Eg:
1, 1.456, 2.43, 4, 6.78
next i have a decimal variable containing one number EG:
1.786
Could someone please tell me how i find the "closest match" number below the
decimal variable from the arraylist.
Thanks ever so much in advance 13 11886
Mike,
It seems like your array is sorted. If this is the case, then you can
call the static BinarySearch method on the Array class to find out.
You would pass your array, along with your number. If the result is a
non negative number, then that is the index in the array that it is found
in. If the number is negative, then that is equal to:
<result> = (<index of next highest value> + 1) * 1
So, in your case, it will return 3.
Hope this helps.

 Nicholas Paldino [.NET/C# MVP]
 mv*@spam.guard.caspershouse.com
"mike" <sp******@hotmail.com> wrote in message
news:Dl******************@doctor.cableinet.net... I have ListArray with number in Eg: 1, 1.456, 2.43, 4, 6.78 next i have a decimal variable containing one number EG: 1.786
Could someone please tell me how i find the "closest match" number below
the decimal variable from the arraylist.
Thanks ever so much in advance
Mike,
It seems like your array is sorted. If this is the case, then you can
call the static BinarySearch method on the Array class to find out.
You would pass your array, along with your number. If the result is a
non negative number, then that is the index in the array that it is found
in. If the number is negative, then that is equal to:
<result> = (<index of next highest value> + 1) * 1
So, in your case, it will return 3.
Hope this helps.

 Nicholas Paldino [.NET/C# MVP]
 mv*@spam.guard.caspershouse.com
"mike" <sp******@hotmail.com> wrote in message
news:Dl******************@doctor.cableinet.net... I have ListArray with number in Eg: 1, 1.456, 2.43, 4, 6.78 next i have a decimal variable containing one number EG: 1.786
Could someone please tell me how i find the "closest match" number below
the decimal variable from the arraylist.
Thanks ever so much in advance
Fantastic,
Sorry to be a pain but could you explain how i find the index of the closest
match when binarysearch produces a negative number i'm really confused?
Thanks
Mike
"Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard.caspershouse.com> wrote in
message news:un**************@TK2MSFTNGP10.phx.gbl... Mike,
It seems like your array is sorted. If this is the case, then you can call the static BinarySearch method on the Array class to find out.
You would pass your array, along with your number. If the result is a non negative number, then that is the index in the array that it is found in. If the number is negative, then that is equal to:
<result> = (<index of next highest value> + 1) * 1
So, in your case, it will return 3.
Hope this helps.
  Nicholas Paldino [.NET/C# MVP]  mv*@spam.guard.caspershouse.com
"mike" <sp******@hotmail.com> wrote in message news:Dl******************@doctor.cableinet.net... I have ListArray with number in Eg: 1, 1.456, 2.43, 4, 6.78 next i have a decimal variable containing one number EG: 1.786
Could someone please tell me how i find the "closest match" number below the decimal variable from the arraylist.
Thanks ever so much in advance
Fantastic,
Sorry to be a pain but could you explain how i find the index of the closest
match when binarysearch produces a negative number i'm really confused?
Thanks
Mike
"Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard.caspershouse.com> wrote in
message news:un**************@TK2MSFTNGP10.phx.gbl... Mike,
It seems like your array is sorted. If this is the case, then you can call the static BinarySearch method on the Array class to find out.
You would pass your array, along with your number. If the result is a non negative number, then that is the index in the array that it is found in. If the number is negative, then that is equal to:
<result> = (<index of next highest value> + 1) * 1
So, in your case, it will return 3.
Hope this helps.
  Nicholas Paldino [.NET/C# MVP]  mv*@spam.guard.caspershouse.com
"mike" <sp******@hotmail.com> wrote in message news:Dl******************@doctor.cableinet.net... I have ListArray with number in Eg: 1, 1.456, 2.43, 4, 6.78 next i have a decimal variable containing one number EG: 1.786
Could someone please tell me how i find the "closest match" number below the decimal variable from the arraylist.
Thanks ever so much in advance
Mike,
It produces a negative number to let you know that there was not an
exact match found in the array. If it gave you a positive number, then you
would think that it actually found the element you are looking for.

 Nicholas Paldino [.NET/C# MVP]
 mv*@spam.guard.caspershouse.com
"mike" <sp******@hotmail.com> wrote in message
news:ld******************@doctor.cableinet.net... Fantastic,
Sorry to be a pain but could you explain how i find the index of the
closest match when binarysearch produces a negative number i'm really confused?
Thanks Mike
"Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard.caspershouse.com> wrote
in message news:un**************@TK2MSFTNGP10.phx.gbl... Mike,
It seems like your array is sorted. If this is the case, then you
can call the static BinarySearch method on the Array class to find out.
You would pass your array, along with your number. If the result is
a non negative number, then that is the index in the array that it is
found in. If the number is negative, then that is equal to:
<result> = (<index of next highest value> + 1) * 1
So, in your case, it will return 3.
Hope this helps.
  Nicholas Paldino [.NET/C# MVP]  mv*@spam.guard.caspershouse.com
"mike" <sp******@hotmail.com> wrote in message news:Dl******************@doctor.cableinet.net... I have ListArray with number in Eg: 1, 1.456, 2.43, 4, 6.78 next i have a decimal variable containing one number EG: 1.786
Could someone please tell me how i find the "closest match" number
below the decimal variable from the arraylist.
Thanks ever so much in advance
Mike,
It produces a negative number to let you know that there was not an
exact match found in the array. If it gave you a positive number, then you
would think that it actually found the element you are looking for.

 Nicholas Paldino [.NET/C# MVP]
 mv*@spam.guard.caspershouse.com
"mike" <sp******@hotmail.com> wrote in message
news:ld******************@doctor.cableinet.net... Fantastic,
Sorry to be a pain but could you explain how i find the index of the
closest match when binarysearch produces a negative number i'm really confused?
Thanks Mike
"Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard.caspershouse.com> wrote
in message news:un**************@TK2MSFTNGP10.phx.gbl... Mike,
It seems like your array is sorted. If this is the case, then you
can call the static BinarySearch method on the Array class to find out.
You would pass your array, along with your number. If the result is
a non negative number, then that is the index in the array that it is
found in. If the number is negative, then that is equal to:
<result> = (<index of next highest value> + 1) * 1
So, in your case, it will return 3.
Hope this helps.
  Nicholas Paldino [.NET/C# MVP]  mv*@spam.guard.caspershouse.com
"mike" <sp******@hotmail.com> wrote in message news:Dl******************@doctor.cableinet.net... I have ListArray with number in Eg: 1, 1.456, 2.43, 4, 6.78 next i have a decimal variable containing one number EG: 1.786
Could someone please tell me how i find the "closest match" number
below the decimal variable from the arraylist.
Thanks ever so much in advance
Thanks Nicholas for your help i know you must be getting fed up of me,
but....
when i have a negative number how can i get the "next" element in the array?
in other words if i have a negative how to i make in into the index of the
next number along?
thanks again !!
"Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard.caspershouse.com> wrote in
message news:ut**************@TK2MSFTNGP10.phx.gbl... Mike,
It produces a negative number to let you know that there was not an exact match found in the array. If it gave you a positive number, then
you would think that it actually found the element you are looking for.
  Nicholas Paldino [.NET/C# MVP]  mv*@spam.guard.caspershouse.com
"mike" <sp******@hotmail.com> wrote in message news:ld******************@doctor.cableinet.net... Fantastic,
Sorry to be a pain but could you explain how i find the index of the closest match when binarysearch produces a negative number i'm really confused?
Thanks Mike
"Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard.caspershouse.com> wrote in message news:un**************@TK2MSFTNGP10.phx.gbl... Mike,
It seems like your array is sorted. If this is the case, then you can call the static BinarySearch method on the Array class to find out.
You would pass your array, along with your number. If the result
is a non negative number, then that is the index in the array that it is found in. If the number is negative, then that is equal to:
<result> = (<index of next highest value> + 1) * 1
So, in your case, it will return 3.
Hope this helps.
  Nicholas Paldino [.NET/C# MVP]  mv*@spam.guard.caspershouse.com
"mike" <sp******@hotmail.com> wrote in message news:Dl******************@doctor.cableinet.net... > I have ListArray with number in Eg: > 1, 1.456, 2.43, 4, 6.78 > next i have a decimal variable containing one number EG: > 1.786 > > Could someone please tell me how i find the "closest match" number below the > decimal variable from the arraylist. > > Thanks ever so much in advance > >
Thanks Nicholas for your help i know you must be getting fed up of me,
but....
when i have a negative number how can i get the "next" element in the array?
in other words if i have a negative how to i make in into the index of the
next number along?
thanks again !!
"Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard.caspershouse.com> wrote in
message news:ut**************@TK2MSFTNGP10.phx.gbl... Mike,
It produces a negative number to let you know that there was not an exact match found in the array. If it gave you a positive number, then
you would think that it actually found the element you are looking for.
  Nicholas Paldino [.NET/C# MVP]  mv*@spam.guard.caspershouse.com
"mike" <sp******@hotmail.com> wrote in message news:ld******************@doctor.cableinet.net... Fantastic,
Sorry to be a pain but could you explain how i find the index of the closest match when binarysearch produces a negative number i'm really confused?
Thanks Mike
"Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard.caspershouse.com> wrote in message news:un**************@TK2MSFTNGP10.phx.gbl... Mike,
It seems like your array is sorted. If this is the case, then you can call the static BinarySearch method on the Array class to find out.
You would pass your array, along with your number. If the result
is a non negative number, then that is the index in the array that it is found in. If the number is negative, then that is equal to:
<result> = (<index of next highest value> + 1) * 1
So, in your case, it will return 3.
Hope this helps.
  Nicholas Paldino [.NET/C# MVP]  mv*@spam.guard.caspershouse.com
"mike" <sp******@hotmail.com> wrote in message news:Dl******************@doctor.cableinet.net... > I have ListArray with number in Eg: > 1, 1.456, 2.43, 4, 6.78 > next i have a decimal variable containing one number EG: > 1.786 > > Could someone please tell me how i find the "closest match" number below the > decimal variable from the arraylist. > > Thanks ever so much in advance > >
Mike,
I originally posted the formula:
<result> = (<index of next highest value> + 1) * 1
So, if you do this:
abs(<result of call to BinarySearch>)  1
Applying that, you get 2, which is the index of the value 2.43, which is
the value that comes after the search value of 1.786. At this point, you
could compare it to the element before (at index 1) and determine which
element is closer.
Don't worry about asking for clarification. If it was a bother, I would
have stopped answering you a long time ago =)

 Nicholas Paldino [.NET/C# MVP]
 mv*@spam.guard.caspershouse.com
"mike" <sp******@hotmail.com> wrote in message
news:go*******************@doctor.cableinet.net... Thanks Nicholas for your help i know you must be getting fed up of me, but....
when i have a negative number how can i get the "next" element in the
array? in other words if i have a negative how to i make in into the index of the next number along?
thanks again !!
"Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard.caspershouse.com> wrote
in message news:ut**************@TK2MSFTNGP10.phx.gbl... Mike,
It produces a negative number to let you know that there was not an exact match found in the array. If it gave you a positive number, then you would think that it actually found the element you are looking for.
  Nicholas Paldino [.NET/C# MVP]  mv*@spam.guard.caspershouse.com
"mike" <sp******@hotmail.com> wrote in message news:ld******************@doctor.cableinet.net... Fantastic,
Sorry to be a pain but could you explain how i find the index of the closest match when binarysearch produces a negative number i'm really
confused? Thanks Mike
"Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard.caspershouse.com>
wrote in message news:un**************@TK2MSFTNGP10.phx.gbl... > Mike, > > It seems like your array is sorted. If this is the case, then
you can > call the static BinarySearch method on the Array class to find out. > > You would pass your array, along with your number. If the
result is a > non negative number, then that is the index in the array that it is found > in. If the number is negative, then that is equal to: > > <result> = (<index of next highest value> + 1) * 1 > > So, in your case, it will return 3. > > Hope this helps. > > >  >  Nicholas Paldino [.NET/C# MVP] >  mv*@spam.guard.caspershouse.com > > > "mike" <sp******@hotmail.com> wrote in message > news:Dl******************@doctor.cableinet.net... > > I have ListArray with number in Eg: > > 1, 1.456, 2.43, 4, 6.78 > > next i have a decimal variable containing one number EG: > > 1.786 > > > > Could someone please tell me how i find the "closest match" number below > the > > decimal variable from the arraylist. > > > > Thanks ever so much in advance > > > > > >
Yup, keep asking questions :)
Clarification = good
Buggy code = bad

Adam Clauss ca*****@tamu.edu
"Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard.caspershouse.com> wrote in message news:Ol*************@TK2MSFTNGP10.phx.gbl... Mike,
I originally posted the formula:
<result> = (<index of next highest value> + 1) * 1
So, if you do this:
abs(<result of call to BinarySearch>)  1
Applying that, you get 2, which is the index of the value 2.43, which is the value that comes after the search value of 1.786. At this point, you could compare it to the element before (at index 1) and determine which element is closer.
Don't worry about asking for clarification. If it was a bother, I would have stopped answering you a long time ago =)
  Nicholas Paldino [.NET/C# MVP]  mv*@spam.guard.caspershouse.com
"mike" <sp******@hotmail.com> wrote in message news:go*******************@doctor.cableinet.net... Thanks Nicholas for your help i know you must be getting fed up of me, but....
when i have a negative number how can i get the "next" element in the array? in other words if i have a negative how to i make in into the index of the next number along?
thanks again !!
"Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard.caspershouse.com> wrote in message news:ut**************@TK2MSFTNGP10.phx.gbl... Mike,
It produces a negative number to let you know that there was not an exact match found in the array. If it gave you a positive number, then you would think that it actually found the element you are looking for.
  Nicholas Paldino [.NET/C# MVP]  mv*@spam.guard.caspershouse.com
"mike" <sp******@hotmail.com> wrote in message news:ld******************@doctor.cableinet.net... > Fantastic, > > Sorry to be a pain but could you explain how i find the index of the closest > match when binarysearch produces a negative number i'm really confused? > > Thanks > Mike > > > "Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard.caspershouse.com> wrote in > message news:un**************@TK2MSFTNGP10.phx.gbl... > > Mike, > > > > It seems like your array is sorted. If this is the case, then you can > > call the static BinarySearch method on the Array class to find out. > > > > You would pass your array, along with your number. If the result is a > > non negative number, then that is the index in the array that it is found > > in. If the number is negative, then that is equal to: > > > > <result> = (<index of next highest value> + 1) * 1 > > > > So, in your case, it will return 3. > > > > Hope this helps. > > > > > >  > >  Nicholas Paldino [.NET/C# MVP] > >  mv*@spam.guard.caspershouse.com > > > > > > "mike" <sp******@hotmail.com> wrote in message > > news:Dl******************@doctor.cableinet.net... > > > I have ListArray with number in Eg: > > > 1, 1.456, 2.43, 4, 6.78 > > > next i have a decimal variable containing one number EG: > > > 1.786 > > > > > > Could someone please tell me how i find the "closest match" number below > > the > > > decimal variable from the arraylist. > > > > > > Thanks ever so much in advance > > > > > > > > > > > >
I must be in a head block, i'm jsut not getting it at all:
my problem is the negative numbers, there just not coming out how i expect
here is the code:
=================================
Object objitem= itemsWeight;
int myIndex = arrWeightList.BinarySearch(objitem);
if(myIndex < 0)
{
myIndex = (Math.Abs(myIndex) + 1) * 1;
}
==========================================
Array holds: 1, 1.0587, 2, 3, 4,
objitem holds: 1.500
myIndex outputs: 4
objitem holds: 3.500
myIndex outputs: 6
===========================
I'm completely stuck with this and I've searched quite a bit on the net I
can't find anything :(
Is my code right? I bet it's so blindingly obvious, I just can't see it.
Thanks
Mike
"Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard.caspershouse.com> wrote in
message news:Ol*************@TK2MSFTNGP10.phx.gbl... Mike,
I originally posted the formula:
<result> = (<index of next highest value> + 1) * 1
So, if you do this:
abs(<result of call to BinarySearch>)  1
Applying that, you get 2, which is the index of the value 2.43, which
is the value that comes after the search value of 1.786. At this point, you could compare it to the element before (at index 1) and determine which element is closer.
Don't worry about asking for clarification. If it was a bother, I
would have stopped answering you a long time ago =)
  Nicholas Paldino [.NET/C# MVP]  mv*@spam.guard.caspershouse.com
"mike" <sp******@hotmail.com> wrote in message news:go*******************@doctor.cableinet.net... Thanks Nicholas for your help i know you must be getting fed up of me, but....
when i have a negative number how can i get the "next" element in the array? in other words if i have a negative how to i make in into the index of
the next number along?
thanks again !!
"Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard.caspershouse.com> wrote in message news:ut**************@TK2MSFTNGP10.phx.gbl... Mike,
It produces a negative number to let you know that there was not
an exact match found in the array. If it gave you a positive number,
then you would think that it actually found the element you are looking for.
  Nicholas Paldino [.NET/C# MVP]  mv*@spam.guard.caspershouse.com
"mike" <sp******@hotmail.com> wrote in message news:ld******************@doctor.cableinet.net... > Fantastic, > > Sorry to be a pain but could you explain how i find the index of the closest > match when binarysearch produces a negative number i'm really confused? > > Thanks > Mike > > > "Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard.caspershouse.com> wrote in > message news:un**************@TK2MSFTNGP10.phx.gbl... > > Mike, > > > > It seems like your array is sorted. If this is the case, then you can > > call the static BinarySearch method on the Array class to find
out. > > > > You would pass your array, along with your number. If the
result is a > > non negative number, then that is the index in the array that it
is found > > in. If the number is negative, then that is equal to: > > > > <result> = (<index of next highest value> + 1) * 1 > > > > So, in your case, it will return 3. > > > > Hope this helps. > > > > > >  > >  Nicholas Paldino [.NET/C# MVP] > >  mv*@spam.guard.caspershouse.com > > > > > > "mike" <sp******@hotmail.com> wrote in message > > news:Dl******************@doctor.cableinet.net... > > > I have ListArray with number in Eg: > > > 1, 1.456, 2.43, 4, 6.78 > > > next i have a decimal variable containing one number EG: > > > 1.786 > > > > > > Could someone please tell me how i find the "closest match"
number below > > the > > > decimal variable from the arraylist. > > > > > > Thanks ever so much in advance > > > > > > > > > > > >
I must be in a head block, i'm jsut not getting it at all:
my problem is the negative numbers, there just not coming out how i expect
here is the code:
=================================
Object objitem= itemsWeight;
int myIndex = arrWeightList.BinarySearch(objitem);
if(myIndex < 0)
{
myIndex = (Math.Abs(myIndex) + 1) * 1;
}
==========================================
Array holds: 1, 1.0587, 2, 3, 4,
objitem holds: 1.500
myIndex outputs: 4
objitem holds: 3.500
myIndex outputs: 6
===========================
I'm completely stuck with this and I've searched quite a bit on the net I
can't find anything :(
Is my code right? I bet it's so blindingly obvious, I just can't see it.
Thanks
Mike
"Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard.caspershouse.com> wrote in
message news:Ol*************@TK2MSFTNGP10.phx.gbl... Mike,
I originally posted the formula:
<result> = (<index of next highest value> + 1) * 1
So, if you do this:
abs(<result of call to BinarySearch>)  1
Applying that, you get 2, which is the index of the value 2.43, which
is the value that comes after the search value of 1.786. At this point, you could compare it to the element before (at index 1) and determine which element is closer.
Don't worry about asking for clarification. If it was a bother, I
would have stopped answering you a long time ago =)
  Nicholas Paldino [.NET/C# MVP]  mv*@spam.guard.caspershouse.com
"mike" <sp******@hotmail.com> wrote in message news:go*******************@doctor.cableinet.net... Thanks Nicholas for your help i know you must be getting fed up of me, but....
when i have a negative number how can i get the "next" element in the array? in other words if i have a negative how to i make in into the index of
the next number along?
thanks again !!
"Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard.caspershouse.com> wrote in message news:ut**************@TK2MSFTNGP10.phx.gbl... Mike,
It produces a negative number to let you know that there was not
an exact match found in the array. If it gave you a positive number,
then you would think that it actually found the element you are looking for.
  Nicholas Paldino [.NET/C# MVP]  mv*@spam.guard.caspershouse.com
"mike" <sp******@hotmail.com> wrote in message news:ld******************@doctor.cableinet.net... > Fantastic, > > Sorry to be a pain but could you explain how i find the index of the closest > match when binarysearch produces a negative number i'm really confused? > > Thanks > Mike > > > "Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard.caspershouse.com> wrote in > message news:un**************@TK2MSFTNGP10.phx.gbl... > > Mike, > > > > It seems like your array is sorted. If this is the case, then you can > > call the static BinarySearch method on the Array class to find
out. > > > > You would pass your array, along with your number. If the
result is a > > non negative number, then that is the index in the array that it
is found > > in. If the number is negative, then that is equal to: > > > > <result> = (<index of next highest value> + 1) * 1 > > > > So, in your case, it will return 3. > > > > Hope this helps. > > > > > >  > >  Nicholas Paldino [.NET/C# MVP] > >  mv*@spam.guard.caspershouse.com > > > > > > "mike" <sp******@hotmail.com> wrote in message > > news:Dl******************@doctor.cableinet.net... > > > I have ListArray with number in Eg: > > > 1, 1.456, 2.43, 4, 6.78 > > > next i have a decimal variable containing one number EG: > > > 1.786 > > > > > > Could someone please tell me how i find the "closest match"
number below > > the > > > decimal variable from the arraylist. > > > > > > Thanks ever so much in advance > > > > > > > > > > > >
Look closer at his formula. Does:
"myIndex = (Math.Abs(myIndex) + 1) * 1;"
look like:
"abs(<result of call to BinarySearch>)  1"
The formula you have in there now is what the number IS  you need to reverse those operations in order to get the true value.
Hence, the second formula.

Adam Clauss ca*****@tamu.edu
"mike" <sp******@hotmail.com> wrote in message news:SF*******************@doctor.cableinet.net... I must be in a head block, i'm jsut not getting it at all: my problem is the negative numbers, there just not coming out how i expect here is the code: =================================
Object objitem= itemsWeight; int myIndex = arrWeightList.BinarySearch(objitem);
if(myIndex < 0)
{
myIndex = (Math.Abs(myIndex) + 1) * 1;
}
==========================================
Array holds: 1, 1.0587, 2, 3, 4, objitem holds: 1.500 myIndex outputs: 4
objitem holds: 3.500 myIndex outputs: 6 ===========================
I'm completely stuck with this and I've searched quite a bit on the net I can't find anything :(
Is my code right? I bet it's so blindingly obvious, I just can't see it. Thanks
Mike "Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard.caspershouse.com> wrote in message news:Ol*************@TK2MSFTNGP10.phx.gbl... Mike,
I originally posted the formula:
<result> = (<index of next highest value> + 1) * 1
So, if you do this:
abs(<result of call to BinarySearch>)  1
Applying that, you get 2, which is the index of the value 2.43, which is the value that comes after the search value of 1.786. At this point, you could compare it to the element before (at index 1) and determine which element is closer.
Don't worry about asking for clarification. If it was a bother, I would have stopped answering you a long time ago =)
  Nicholas Paldino [.NET/C# MVP]  mv*@spam.guard.caspershouse.com
"mike" <sp******@hotmail.com> wrote in message news:go*******************@doctor.cableinet.net... Thanks Nicholas for your help i know you must be getting fed up of me, but....
when i have a negative number how can i get the "next" element in the array? in other words if i have a negative how to i make in into the index of the next number along?
thanks again !!
"Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard.caspershouse.com> wrote in message news:ut**************@TK2MSFTNGP10.phx.gbl... > Mike, > > It produces a negative number to let you know that there was not an > exact match found in the array. If it gave you a positive number, then you > would think that it actually found the element you are looking for. > > >  >  Nicholas Paldino [.NET/C# MVP] >  mv*@spam.guard.caspershouse.com > > "mike" <sp******@hotmail.com> wrote in message > news:ld******************@doctor.cableinet.net... > > Fantastic, > > > > Sorry to be a pain but could you explain how i find the index of the > closest > > match when binarysearch produces a negative number i'm really confused? > > > > Thanks > > Mike > > > > > > "Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard.caspershouse.com> wrote > in > > message news:un**************@TK2MSFTNGP10.phx.gbl... > > > Mike, > > > > > > It seems like your array is sorted. If this is the case, then you > can > > > call the static BinarySearch method on the Array class to find out. > > > > > > You would pass your array, along with your number. If the result is > a > > > non negative number, then that is the index in the array that it is > found > > > in. If the number is negative, then that is equal to: > > > > > > <result> = (<index of next highest value> + 1) * 1 > > > > > > So, in your case, it will return 3. > > > > > > Hope this helps. > > > > > > > > >  > > >  Nicholas Paldino [.NET/C# MVP] > > >  mv*@spam.guard.caspershouse.com > > > > > > > > > "mike" <sp******@hotmail.com> wrote in message > > > news:Dl******************@doctor.cableinet.net... > > > > I have ListArray with number in Eg: > > > > 1, 1.456, 2.43, 4, 6.78 > > > > next i have a decimal variable containing one number EG: > > > > 1.786 > > > > > > > > Could someone please tell me how i find the "closest match" number > below > > > the > > > > decimal variable from the arraylist. > > > > > > > > Thanks ever so much in advance > > > > > > > > > > > > > > > > > > > >
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