变位词字符串实际上是指另一个字符串中出现相同次数的所有字符,我们称之为变位词。
用户输入两个字符串。我们需要计算每个字母('a'到'z')在它们中出现的次数,然后比较它们对应的计数。字母在字符串中出现的频率是它在其中出现的次数。
如果两个字符串具有相同的特定字母频率计数,则可以说这两个字符串是变位词。
示例1
字符串1 - abcd
字符串2 - bdac
这两个字符串具有相同的只出现一次的字母。因此,这两个字符串是变位词。
示例2
字符串1 - programming
字符串2 - gramming
输出 - 这两个字符串不是变位词。
示例
以下是一个变位词的C程序 -
#include <stdio.h> int check_anagram(char [], char []); int main(){ char a[1000], b[1000]; printf("Enter two strings</p><p>"); gets(a); gets(b); if (check_anagram(a, b)) printf("The strings are anagrams.</p><p>"); else printf("The strings aren't anagrams.</p><p>"); return 0; } int check_anagram(char a[], char b[]){ int first[26] = {0}, second[26] = {0}, c=0; // Calculating frequency of characters of the first string while (a[c] != '\0') { first[a[c]-'a']++; c++; } c = 0; while (b[c] != '\0') { second[b[c]-'a']++; c++; } // Comparing the frequency of characters for (c = 0; c < 26; c++) if (first[c] != second[c]) return 0; return 1; }
输出
执行上述程序时,会产生以下输出 -
Run 1: Enter two strings abcdef deabcf The strings are anagrams. Run 2: Enter two strings tutorials Point The strings aren't anagrams.
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