C#程序计算字符串中单词出现的次数
首先设置字符串−
string str = "Hello World! Hello!";
现在检查字符串中单词“Hello”出现的次数并进行循环遍历−
while ((a = str1.IndexOf(pattern, a)) != -1) { a += pattern.Length; count++; }
示例
你可以尝试运行以下代码以计算字符串中单词出现的次数。
using System; class Program { static void Main() { string str = "Hello World! Hello!"; Console.WriteLine("Occurrence:"+Check.CheckOccurrences(str, "Hello")); } } public static class Check { public static int CheckOccurrences(string str1, string pattern) { int count = 0; int a = 0; while ((a = str1.IndexOf(pattern, a)) != -1) { a += pattern.Length; count++; } return count; } }
输出
Occurrence:2
广告