19 Bitwise operation and utilities

bitwise.js

// bitwise operation and utilities

// Left shift by 1, will multiply the number by 2
console.log(2 << 1); // return 4

// Right shift by 1, will divide the number by 2.
// In JavaScript, the decimal part will be floored
console.log(2 >> 1); // return 1
console.log(3 >> 1); // return 1

// Bitwise AND by 1, will return 0 for even number and odd for even number
console.log(2 & 1); // return 0
console.log(3 & 1); // return 1