A String is said to be ‘Unique’ if none of the alphabets resent in the string are repeated. Write a program to accept a string and check whether the string is Unique or not.
Example :-
Input: COMPUTER
Output:Unique String
Input: APPLICATIONS
Output: Not a Unique String
import java.util.Scanner; class Unique { public static void main(String args[]) { Scanner in = new Scanner(System.in); System.out.println("Enter the string"); String str = in.nextLine(); str=str.toUpperCase(); int l=str.length(); int n=0; //counter variable to count repetitions for(int i=0; i<l-1; i++) { char ch=str.charAt(i); for(int j=i+1; j<l; j++) { char ch1=str.charAt(j); if(ch==ch1) { n++; break; } } } if(n>=1) System.out.println("It is not a unique string"); else System.out.println("It is a unique string"); } }