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面试题 01.01. 判定字符是否唯一
2022-07-04 21:23:00 【Mr Gao】
面试题 01.01. 判定字符是否唯一
实现一个算法,确定一个字符串 s 的所有字符是否全都不同。
示例 1:
输入: s = “leetcode”
输出: false
示例 2:
输入: s = “abc”
输出: true
这题其实比较简单的,解题代码如下:
bool isUnique(char* astr){
int r[26];
int i;
for(i=0;i<26;i++){
r[i]=0;
}
i=0;
while(astr[i]!='\0'){
r[astr[i]-'a']++;
// printf("%d",)
if(r[astr[i]-'a']>=2){
return false;
}
i++;
}
return true;
}
}
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