C# 程序用于计算字符串中单词的出现次数
csharpserver side programmingprogramming更新于 2025/9/24 13:51:00
首先设置字符串 −
string str = "Hello World! Hello!";
现在检查字符串中单词 “Hello’ 的出现次数，并循环遍历 −
while ((a = str1.IndexOf(pattern, a)) != -1) {
a += pattern.Length;
count++;
}
示例
您可以尝试运行以下代码来计算字符串中单词的出现次数。
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
