Write a Program to sort an array? -- I used selection sort

Question

Anonym · Accepted Answer

#include 
#include 

int main()
{
    int i,j,temp;
    int arr [5] = {3,2,1,7,6};
    for (i=0;iarr[j])
            {
                temp = arr[i];
                arr[i]=arr[j];
                arr[j]=temp;
            }
        }
    }
    for (i=0;i<5;i++)
        printf("%d ",arr[i]);

    return 0;
}

Hassan Essam · Answer

the swap process can be more efficient :D 
i know doesn't make much better but it do 
___
using bitwise operators 
arr[i] = arr[i] ^ arr[j];
arr[j] = arr[i] ^ arr[j];
arr[i] = arr[i] ^ arr[j];
___
using mathmatical operators 
arr[i] = arr[i] + arr[j];
arr[j] = arr[i] - arr[j];
arr[i] = arr[i] - arr[j];

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