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Задача 55: Квадраты
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using System; | |
using System.Collections.Generic; | |
public class Program | |
{ | |
public static int GetCountOfSquares(int[] values) | |
{ | |
// соберем словарик: длина отрезка -> кол-во таких отрезков | |
var hashMap = new Dictionary<int, int>(); | |
for (int i = 0; i < values.Length; i++) | |
{ | |
int value = values[i]; | |
if (hashMap.ContainsKey(value)) | |
{ | |
hashMap[value]++; | |
} | |
else | |
{ | |
hashMap[value] = 1; | |
} | |
} | |
int result = 0; | |
foreach (var item in hashMap) | |
{ | |
result += item.Value / 4; // берем целую часть от деления | |
} | |
return result; | |
} | |
public static void Main() | |
{ | |
Console.WriteLine("@UniLecs"); | |
int[] arr = new int[] { 7, 7, 2, 7, 8, 7, 9, 7, 2 }; | |
Console.WriteLine(GetCountOfSquares(arr)); // 1 | |
} | |
} |
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