Decimal to binary

[Dreadknought]

I'm new to Python I'm trying to create a program that converts decimal to binary but am having trouble.

I understand the arithmetics of it, but I was wondering how I can add the remainders onto each other using strings. So for example, the binary of 6 would be 110. The first remainder computed would be 0, 1, and then finally 1. How do I put those three numbers together to create 110 as a string. I apologize but I hope this is a bit comprehensible.

[rhitam30111985]

I'm new to Python I'm trying to create a program that converts decimal to binary but am having trouble.

I understand the arithmetics of it, but I was wondering how I can add the remainders onto each other using strings. So for example, the binary of 6 would be 110. The first remainder computed would be 0, 1, and then finally 1. How do I put those three numbers together to create 110 as a string. I apologize but I hope this is a bit comprehensible.

keep storing the remainder in a list by using the list.append() function.. then reverse the list using list.reverse() fuction.... then join it using the join fuction ''.join(list).. and u have the binary number in the string form... now use type casting to make it an integer : int(string)

thats it

[Dreadknought]

keep storing the remainder in a list by using the list.append() function.. then reverse the list using list.reverse() fuction.... then join it using the join fuction ''.join(list).. and u have the binary number in the string form... now use type casting to make it an integer : int(string)

thats it

Is there any way to do it without using list?

[rhitam30111985]

yeah there is .. but what have u tried so far ? post your code ...

[Dreadknought]

n=int(raw_input("number: "))
b=[]
while n>0:
    q=n/2 
    r=n%2  
    b.append(r)
    if q!=0:
        q=n
    print b
 
 

I'm trying list but it won't work. How do I store remainders?

[rhitam30111985]

n=int(raw_input("number: "))
b=[]
while n>0:
    q=n/2 
    r=n%2  
    b.append(r)
    if q!=0:
        q=n
    print b
 
 

I'm trying list but it won't work. How do I store remainders?

this looks like an infinite loop ..

(while n>0)

n is always greater than 0. since u r not modifying its value anywhere in ur code.. anyway. using list u can do it lie this:

a=22
b=[]
while a:
     b.append(a%2)
     a/=2
b.reverse()
 

without using list:

def binary(number):
     bin=0
     while number:
             remainder= number % 2
             bin+=remainder
             bin*=10
             number /=2
     while bin:
             number+=bin%10
             bin/=10
             number*=10
     return number
 

[bartonc]

Thoroughly discussed here.

[Dreadknought]

Hi there again. I'm trying to convert a decimal number into binary using two's complement. Is there a function that'll allow me to flip the integers around?

[bartonc]

Thoroughly discussed here.

It's close enough to the original topic that I have merge your two threads.