Bitwise operation c# array elements(0-1) transferring to integer

Question

we have an int array which contains random 32 numbers(1 and 0's ) and we need to transfer it to an integer number with bitwise how can i do that with bitwise operation

i did it without bitwise with using Math.Pow(2, j) method but how to make it with bitwise ?

Answer 1

If you can use left-shift operator (<<), you can do something like this:

int number = 0;
int[] bits = new int[32];

for (int i = 0; i < 32; i++)
    number |= bits[i] << i;

<< operator works like Math.Pow(2, j);