showing results for - "check a string for unique characters javascript"
Lya
30 Nov 2018
1function checkForUnique(str){
2    var hashtable = {};
3    for(var i=0,len=str.length;i<len;i++){
4        if (hashtable[str[i]] != null){
5            hashtable[str[i]] = 1;
6            return false;
7        }else{
8            hashtable[str[i]] = 0;
9        }
10    }
11    return true;
12}
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