package String; import java.util.Scanner; public class ExchangeAlter { public static String[] split(String s) { int c = 0; for (int i = 0; i < s.length(); i++) { if (s.charAt(i) == ' ') { c += 1; } } String[] st = new String[c + 1]; String t = ""; int j = 0; for (int i = 0; i < s.length(); i++) { if (s.charAt(i) != ' ') { t += s.charAt(i); } else { st[j++] = t; t = ""; } } st[j] = t; return st; } public static void main(String[] args) { Scanner sc = new Scanner(System.in); System.out.println("Enter the String: "); String s = sc.nextLine(); sc.close(); String[] str = split(s); String temp = ""; temp = str[0]; str[0] = str[str.length - 1]; str[str.length - 1] = temp; for (String s1 : str) { System.out.print(s1 + " "); } } }