C# 程序在整数数组中查找所有重复元素
首先,使用重复元素设置数组。
int[] arr = { 24, 10, 56, 32, 10, 43, 88, 32 };
现在声明一个 Dictionary 并遍历数组以获取重复元素。
var d = new Dictionary < int, int > (); foreach(var res in arr) { if (d.ContainsKey(res)) d[res]++; else d[res] = 1; }
示例
using System; using System.Collections.Generic; namespace Demo { public class Program { public static void Main(string[] args) { int[] arr = { 24, 10, 56, 32, 10, 43, 88, 32 }; var d = new Dictionary < int, int > (); foreach(var res in arr) { if (d.ContainsKey(res)) d[res]++; else d[res] = 1; } foreach(var val in d) Console.WriteLine("{0} occurred {1} times", val.Key, val.Value); } } }
输出
24 occurred 1 times 10 occurred 2 times 56 occurred 1 times 32 occurred 2 times 43 occurred 1 times 88 occurred 1 times
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