July12_2020.java

// Reverse Bits => Bit manipulation 


public class Solution {
    // you need treat n as an unsigned value
    public int reverseBits(int n) {
        int rev = 0;
        for(int i=0; i < 32; i++) {
            rev <<= 1;
            rev |= (n & 1);
            n >>= 1;
        }
        return rev;
    }
}