Write a method to fill all the spaces in a string with '%20'

Correct Answer: public class Test { public void replaseSpaces(char[] str, int length) { int spaceCount = 0, newLength = 0, i = 0; for(i = 0; i < length; i++) { if (str[i] == ' ') spaceCount++; } newLength = length + (spaceCount * 2); str[newLength] = '\0'; for(i = length - 1; i >= 0; i--) { if (str[i] == ' ') { str[newLength - 1] = '0'; str[newLength - 2] = '2'; str[newLength - 3] = '%'; newLength = newLength - 3; } else { str[newLength - 1] = str[i]; newLength = newLength - 1; } } Systemoutprintln(str); } public static void main(String[] args) { Test tst = new Test(); char[] ch = {'t', 'h', 'e', ' ', 'd', 'o', 'g', ' ', ' ', ' ', ' ', ' ', ' '}; int length = 6; tstreplaseSpaces(ch, length); } }