프로그래머스 레벨2 C# 주차 요금 계산(array.where)

using System;
using System.Collections.Generic;
using System.Linq;

public class Solution {
    public int[] solution(int[] fees, string[] records) {
        
        List<string> newRecords = new List<string>();
        Dictionary<string, List<string>> dicList = new Dictionary<string, List<string>>();
        List<int> answerList = new List<int>();

        for (var i=0; i< records.Length; i++)
        {
            var tmp = records[i].Split(' ');
            var list = records.Where(w => w.Substring(6, 4) == tmp[1]).OrderBy(o => o);

            if(!dicList.ContainsKey(tmp[1]))
            {
                dicList.Add(tmp[1], list.ToList());
            }
        }

        var result = dicList.OrderBy(o => o.Key);
        double totalMinute = 0;
        
        foreach(var dic in result)
        {
            DateTime inTime = DateTime.Now;
            DateTime outTime = DateTime.Now;

            for (var i=0;i< dic.Value.Count;i++ )
            {
                var time = dic.Value[i].Split(' ')[0];
                var gb = dic.Value[i].Split(' ')[2];

                if (gb == "IN")
                {
                    inTime = Convert.ToDateTime(DateTime.Now.ToString("yyyy-MM-dd") + " " + time);
                }
                else
                {
                    outTime = Convert.ToDateTime(DateTime.Now.ToString("yyyy-MM-dd") + " " + time);

                    TimeSpan dateDiff = outTime - inTime;
                    totalMinute += Convert.ToInt32(dateDiff.TotalMinutes);
                }
            }

            // 출차기록이 없으면 23:59 분 출차로 기록
            if (dic.Value.Count % 2 != 0)
            {
                outTime = Convert.ToDateTime(DateTime.Now.ToString("yyyy-MM-dd") + " 23:59");

                TimeSpan dateDiff2 = outTime - inTime;
                totalMinute += Convert.ToInt32(dateDiff2.TotalMinutes);
            }

            double parkingPrice = 0;

            if (totalMinute <= fees[0])
            {
                parkingPrice = fees[1];
            }
            else
            {
                parkingPrice = fees[1] + Math.Ceiling((totalMinute - fees[0]) / fees[2]) * fees[3];
            }

            answerList.Add(Convert.ToInt32(parkingPrice));
            totalMinute = 0;
        }

        var answer = answerList.ToArray();

        return answer;
    }
}

 

 

 

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using System;
using System.Collections.Generic;
using System.Linq;

public class Solution {
    public int[] solution(int[] fees, string[] records) {
        List<string> cars = new List<string>();
        Dictionary<string, int> recDic = new Dictionary<string, int>();
        Dictionary<string, int> tempDic = new Dictionary<string, int>();

        for(int i = 0; i < records.Length; i++)
        {
            string[] rec = records[i].Split(' ');
            if(rec[2] == "IN")
            {
                int inTime = int.Parse(rec[0].Substring(0, 2)) * 60 + int.Parse(rec[0].Substring(3, 2));

                if(!recDic.ContainsKey(rec[1]))
                {
                    cars.Add(rec[1]);
                    tempDic.Add(rec[1], inTime);
                }
                else
                    tempDic[rec[1]] = inTime;
            }
            else
            {
                int outTime = int.Parse(rec[0].Substring(0, 2)) * 60 + int.Parse(rec[0].Substring(3, 2));

                if(!recDic.ContainsKey(rec[1]))
                    recDic.Add(rec[1], outTime - tempDic[rec[1]]);
                else
                    recDic[rec[1]] += outTime - tempDic[rec[1]];

                tempDic[rec[1]] = -1;
            }
        }
        
        cars.Sort();
        int[] answer = new int[cars.Count];
        
        for(int i = 0; i < cars.Count; i++)
        {
            int time = 0;
            if(!recDic.TryGetValue(cars[i], out time) || tempDic[cars[i]] != -1)
                time += 1439 - tempDic[cars[i]];

            answer[i] = fees[1];
            if(time > fees[0])
            {
                time -= fees[0];
                answer[i] += (time / fees[2]) * fees[3];
                if(time % fees[2] != 0)
                    answer[i] += fees[3];
            }
        }
        return answer;
    }
}