Additional data structures

public static boolean isUniqueChars(String str) {
    long checker1 = 0;
    long checker2 = 0;
    long checker3 = 0;
    long checker4 = 0;
    for (int i = 0; i < str.length(); ++i) {
        int val = str.charAt(i);
        int toCheck = val / 64;
        val %= 64;
        switch (toCheck) {
            case 0:
                if ((checker1 & (1L << val)) > 0) {
                    return false;
                }
                checker1 |= (1L << val);
                break;
            case 1:
                if ((checker2 & (1L << val)) > 0) {
                    return false;
                }
                checker2 |= (1L << val);
                break;
            case 2:
                if ((checker3 & (1L << val)) > 0) {
                    return false;
                }
                checker3 |= (1L << val);
                break;
            case 3:
                if ((checker4 & (1L << val)) > 0) {
                    return false;
                }
                checker4 |= (1L << val);
                break;
        }            
    }
    return true;
}

Source: stackoverflow.com

Similar codes

0 vote146 views2 answers
Moonspell (@moonspellofficial) • Instagram photos and videoswww.instagram.com › moonspellofficial 61.4k Followers, 619 Following, 2421 Posts - See Instagram photos and videos from Moonspell (@moonspellofficial)
TypeScript
0 vote135 views1 answer
Grid layout elements in one row
TypeScript
0 vote156 views1 answer
Property 'isAuth' does not exist on type 'Request<ParamsDictionary, any, any, ParsedQs>'
TypeScript
0 vote134 views1 answer
Google sheets past tsv data
TypeScript
0 vote158 views1 answer
How to set value to readonly property in typescript while unit testing
TypeScript
18 votes140 views2 answers
How to do limits in latex
TypeScript
0 vote142 views3 answers
Method swap to the Pair class of that swaps the first and second elements value of the pair in generic Pair class in java
TypeScript
0 vote148 views1 answer
Count number of elements in multi-dimensional array python
TypeScript
0 vote155 views1 answer
What types of Collections/Data structures you have used
TypeScript
-3 votes145 views1 answer
How do we write comments in myql
TypeScript