Question

a string is said to be Unique none of the letters present in the string are repeated
Write a program to accept a string and check whether the string is Unique or not.
The program displays a message accordingly
Sample Input COMPUTERS
Sample Output Unique String​

Answer 1

Answer:

import java.util.Scanner; public class KboatUniqueString { public static void main(String args[]) { Scanner in = new Scanner(System.in); System.out.print("Enter a string: "); String str = in.nextLine(); str = str.toUpperCase(); boolean isUnique = true; int len = str.length(); for (int i = 0; i < len; i++) { char ch = str.charAt(i); for (int j = i + 1; j < len; j++) { if (ch == str.charAt(j)) { isUnique = false; break; } } if (!isUnique) break; } if (isUnique) System.out.println("Unique String"); else System.out.println("Not Unique String"); } }