HackerRank - String algorithm - Make it anagram - https://www.hackerrank.com/challenges/make-it-anagram/submissions/code/18344694

MakeItAnagram.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace MakeItAnagram
{
    class Program
    {
        static void Main(string[] args)
        {
            string s1 = Console.ReadLine();
            string s2 = Console.ReadLine();

            Console.WriteLine(getNumberOfDeletion(s1, s2)); 
        }

        /*
         * Length of string s1, s2, from >=1, <=10000
         * lowercase latin letter   a - z
         */
        public static int getNumberOfDeletion(string s1, string s2)
        {
            int SIZE = 26;

            int count = 0; 
            int[] sumA = getSumArray(s1);
            int[] sumB = getSumArray(s2); 

            for(int i=0; i< SIZE; i++)
            {
                count += Math.Abs(sumA[i] - sumB[i]); 
            }

            return count; 
        }

        public static int[] getSumArray(string s1)
        {
            int SIZE = 26;
            int[] sumA = new int[SIZE];

            foreach (char c in s1)
            {
                sumA[c - 'a']++;
            }

            return sumA; 
        }        
    }
}