提示
给你两个字符串数组?
words1
?和?words2
?,请你返回在两个字符串数组中?都恰好出现一次?的字符串的数目。示例 1:
输入:words1 = ["leetcode","is","amazing","as","is"], words2 = ["amazing","leetcode","is"] 输出:2 解释: - "leetcode" 在两个数组中都恰好出现一次,计入答案。 - "amazing" 在两个数组中都恰好出现一次,计入答案。 - "is" 在两个数组中都出现过,但在 words1 中出现了 2 次,不计入答案。 - "as" 在 words1 中出现了一次,但是在 words2 中没有出现过,不计入答案。 所以,有 2 个字符串在两个数组中都恰好出现了一次。示例 2:
输入:words1 = ["b","bb","bbb"], words2 = ["a","aa","aaa"] 输出:0 解释:没有字符串在两个数组中都恰好出现一次。示例 3:
输入:words1 = ["a","ab"], words2 = ["a","a","a","ab"] 输出:1 解释:唯一在两个数组中都出现一次的字符串是 "ab" 。提示:
1 <= words1.length, words2.length <= 1000
1 <= words1[i].length, words2[j].length <= 30
words1[i]
?和?words2[j]
?都只包含小写英文字母。
int countWords(char** words1, int words1Size, char** words2, int words2Size) {
int count=0;
for(int i = 0; i < words1Size;i++){
int j,f=0;
for(j = 0; j < words1Size;j++){
if(j==i){
continue;
}
if(strcmp(words1[i],words1[j])==0){
break;
}
}
if( j < words1Size){
continue;
}else{
for(j = 0; j < words2Size;j++){
if(strcmp(words1[i],words2[j])==0){
f++;
}
}
if(f==1){
count++;
}
}
}
return count;
}