(IN JAVA) 3 ZIPS, Any Duplicates? Write a program named ZipDuplicates that reads

Question

(IN JAVA) 3 ZIPS, Any Duplicates? Write a program named ZipDuplicates that reads in three zip codes from standard input and writes to standard output a single integer and nothing else. The integer it prints out is the number of duplicates in the sequence of zip codes. Thus, it will print out 0, 1 or 2: 0 is printed if each zip code is unique. 1 is printed if only two of the zip codes are the same. 2 is printed if all three are the same. So, if the input to the program is 11210 11217 10003 then the output would be: ------------------------------------ 0 ------------------------------------ But, if the input to the program is 11210 11210 11210 then the output would be: ------------------------------------ 2 ------------------------------------ CONSTRAINT: Use a method to determine and return the number of duplicates.

Explanation / Answer

Solution

import java.util.*;
public class MyClass {
    public static void main(String args[]) {
        Scanner scn=new Scanner(System.in);
        String input=scn.nextLine();
        String[] arr=input.split(" ");
        int ans=findDuplicates(arr);
        System.out.println("------------------------ "+ans+" --------------------");
    }
  
    public static int findDuplicates(String[] arr){
        if(arr[0].equals(arr[1]) && arr[1].equals(arr[2]))
            return 2;
        if(arr[0].equals(arr[1]) || arr[1].equals(arr[2]) || arr[0].equals(arr[2]))
            return 1;
        return 0;
    }
}

sample input/output:

input:

11210 11217 10003

output:

------------------------ 0 --------------------

input:

11210 11210 11210

output

------------------------ 2 --------------------

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