path: root/progs/a746.py

def even_bit_toggle_number(n) : 
    res = 0; count = 0; temp = n    
    while(temp > 0 ) : 
        if (count % 2 == 0) : 
            res = res | (1 << count)      
        count = count + 1
        temp >>= 1 
    return n ^ res