Smallest power of 2 greater than or equal to n | JavaScript program to find smallest power of 2 greater than or equal to n ; First n in the below condition is for the case where n is 0 ; Driver Code
function nextPowerOf2 ( n ) { var count = 0 ; if ( n && ! ( n & ( n - 1 ) ) ) return n ; while ( n != 0 ) { n >>= 1 ; count += 1 ; } return 1 << count ; } var n = 0 ; document . write ( nextPowerOf2 ( n ) ) ;