Making Anagrams – HackerRank Solution

In this post, we will solve Making Anagrams HackerRank Solution. This problem (Making Anagrams) is a part of HackerRank Problem Solving series.

Solution – Making Anagrams – HackerRank Solution

C++

#include <cmath>
#include <cstring>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;

// Given two strings, finds the minimum number of character deletions required to make the two strings anagrams.
int main() {
    char s1[10010],s2[10010];
    cin>>s1>>s2;
    int a[26]={0};
    for(int i=0;i<strlen(s1);i++)
        a[s1[i]-'a']++;
    for(int i=0;i<strlen(s2);i++)
        a[s2[i]-'a']--;
    long long int ans = 0;
    for(int i=0;i<26;i++)
        ans += abs(a[i]);
    cout<<ans<<endl;
    return 0;
}

Python

#!/bin/python3

import sys
from collections import Counter

def makingAnagrams(s1, s2):
    res = 0
    
    cnt1 = Counter(s1)
    cnt2 = Counter(s2)
    cnt3 = {}
    
    for let, val in cnt1.items():
        cnt3[let] = abs(val - cnt2[let])
    for let, val in cnt2.items():
        cnt3[let] = abs(val - cnt1[let])
        
    for el in cnt3.values():
        res += el
    
    return res


s1 = input().strip()
s2 = input().strip()
result = makingAnagrams(s1, s2)
print(result)

Java

import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;

public class Solution {

    private static final Scanner scanner = new Scanner(System.in);

    // Complete the makeAnagram function below.
    static int makeAnagram(String a, String b) {
        Map<Integer, Integer> map = new HashMap<>();
        a.chars().forEach(c -> map.put(c, map.getOrDefault(c, 0) + 1));
        b.chars().forEach(c -> map.put(c, map.getOrDefault(c, 0) - 1));
        return map.values().stream().reduce(0, (subtotal, value) -> subtotal + Math.abs(value));
    }

    public static void main(String[] args) throws IOException {
        BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(System.getenv("OUTPUT_PATH")));

        String a = scanner.nextLine();
        String b = scanner.nextLine();

        int res = makeAnagram(a, b);

        bufferedWriter.write(String.valueOf(res));
        bufferedWriter.newLine();
        bufferedWriter.close();
        scanner.close();
    }
}

Note: This problem (Making Anagrams) is generated by HackerRank but the solution is provided by CodingBroz. This tutorial is only for Educational and Learning purpose.