[프로그래머스]Lv.2 할인 행사 C#

https://school.programmers.co.kr/learn/courses/30/lessons/131127

프로그래머스

소스코드

using System;
using System.Collections.Generic;

public class Solution
{
    public int solution(string[] want, int[] number, string[] discount)
    {
        int answer = 0;

        Dictionary<string, int> dicWant = new Dictionary<string, int>();
        Dictionary<string, int> dic = new Dictionary<string, int>();

        for (int i = 0; i < want.Length; i++)
            dicWant.TryAdd(want[i], number[i]);

        for (int i = 0; i < discount.Length; i++)
            dic.TryAdd(discount[i], 0);

        foreach (var item in dicWant)
        {
            if (dic.ContainsKey(item.Key) == false)
                return 0;
        }

        for (int i = 0; i < discount.Length; i++)
        {
            string key = discount[i];

            if (i > 9)
            {
                string rowKey = discount[i - 10];
                dic[rowKey] -= 1;
            }
            dic[key] += 1;

            bool isEquals = true;
            foreach (var item in dicWant)
            {
                if (item.Value != dic[item.Key])
                {
                    isEquals = false;
                    break;
                }
            }

            if (isEquals)
                answer++;
        }
        return answer;
    }
}