使用集合在三个数组中查找公共元素的 C# 程序
设置三个数组
int[] arr1 = { 99, 57, 63, 98 }; int[] arr2 = { 43, 99, 33, 57 }; int[] arr3 = { 99, 57, 42 };
现在使用 HashSet 设置上述元素。
// HashSet One var h1 = new HashSet < int > (arr1); // HashSet Two var h2 = new HashSet < int > (arr2); // HashSet Three var h3 = new HashSet < int > (arr3);
让我们查看完整代码以查找公共元素。
示例
using System; using System.Collections.Generic; using System.Linq; public class Program { public static void Main() { int[] arr1 = { 99, 57, 63, 98 }; int[] arr2 = { 43, 99, 33, 57 }; int[] arr3 = { 99, 57, 42 }; // HashSet One var h1 = new HashSet < int > (arr1); // HashSet Two var h2 = new HashSet < int > (arr2); // HashSet Three var h3 = new HashSet < int > (arr3); // Displaying int[] val1 = h1.ToArray(); Console.WriteLine("Set one..."); foreach(int val in val1) { Console.WriteLine(val); } //Displaying int[] val2 = h2.ToArray(); Console.WriteLine("Set two..."); foreach(int val in val2) { Console.WriteLine(val); } //Displaying int[] val3 = h3.ToArray(); Console.WriteLine("Set three..."); foreach(int val in val3) { Console.WriteLine(val); } int i = 0, j = 0, k = 0; Console.WriteLine("Common elements..."); while (i < val1.Length && j < val2.Length && k < val3.Length) { if (val1[i] == val2[j] && val2[j] == val3[k]) { Console.Write(val1[i] + " "); i++; j++; k++; } // x < y else if (val1[i] < val2[j]) i++; // y < z else if (val2[j] < val3[k]) j++; else k++; } } }
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