C# 程序查找字符串中某个字符的出现次数
csharpprogrammingserver side programming更新于 2025/9/18 22:16:00
假设我们的字符串是 −
String s = "mynameistomhanks";
现在创建一个新数组，并使用上面声明的字符串向其传递一个新方法。这将计算字符串中字符的出现次数。
static void calculate(String s, int[] cal) {
for (int i = 0; i < s.Length; i++)
cal[s[i]]++;
}
让我们看一下完整的代码。
示例
using System;
class Demo {
static int maxCHARS = 256;
static void calculate(String s, int[] cal) {
for (int i = 0; i < s.Length; i++)
cal[s[i]]++;
}
public static void Main() {
String s = "mynameistomhanks";
int[] cal = new int[maxCHARS];
calculate(s, cal);
for (int i = 0; i < maxCHARS; i++) {
if (cal[i] > 1) {
Console.WriteLine("Character " + (char) i);
Console.WriteLine("Occurrence = " + cal[i] + " times");
}
if (cal[i] == 1) {
Console.WriteLine("Character " + (char) i);
Console.WriteLine("Occurrence = " + cal[i] + " time");
}
}
}
}
输出
Character a Occurrence = 2 times Character e Occurrence = 1 time Character h Occurrence = 1 time Character i Occurrence = 1 time Character k Occurrence = 1 time Character m Occurrence = 3 times Character n Occurrence = 2 times Character o Occurrence = 1 time Character s Occurrence = 2 times Character t Occurrence = 1 time Character y Occurrence = 1 time
