首先,设置要检查的字符串。
string s = "timetime";
现在为字符串的两半设置两个计数器。
int []one = new int[MAX_CHAR]; int []two = new int[MAX_CHAR];
检查字符串的两半。
for (int i = 0, j = l - 1; i < j; i++, j--) { one[str[i] - 'a']++; two[str[j] - 'a']++; }
以下是检查C#中字符串的两半是否具有相同字符集的完整代码。
using System; class Demo { static int MAX_CHAR = 26; static bool findSameCharacters(string str) { int []one = new int[MAX_CHAR]; int []two = new int[MAX_CHAR]; int l = str.Length; if (l == 1) return true; for (int i = 0, j = l - 1; i < j; i++, j--) { one[str[i] - 'a']++; two[str[j] - 'a']++; } for (int i = 0; i < MAX_CHAR; i++) if (one[i] != two[i]) return false; return true; } public static void Main() { string str = "timetime"; if (findSameCharacters(str)) Console.Write("Yes: Two halves are same!"); else Console.Write("No! Two halves are not same!"); } }
输出结果
Yes: Two halves are same!