Tech-Notes

ASCII

• 8 bit ASCII table with 256 characters and symbols
  1. Control characters (0-31)
  2. Printable characters (32-127) - This is enough
  3. Extended ASCII codes (128-255)

     Converting char to ASCII - int ascii = (int)str.charAt(i);

Finding length

str.length(); arr.length; list.size;

Prime series

• starts from 2 2, 3, 5, 7, 11

Convert number into string

String.valueOf(input);