Tips & Tricks

• Check if the number (a) is even or odd

  boolean = (a & 1) == 0 ? "Even" : "ODD"

• Fast multiplication number (n) by factor 2

  n = n << 1

• Fast division number (n) by factor 2

  n = n >> 1

• Swapping of 2 numbers using XOR

  a ^ = b;

  b ^ = a;

  a ^ = b;

• Calculate number of digits in a integer

  int n = (int)Math.floor(Math.log10(Number))+1;