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 vote167 views1 answer
Typescript array of object findindex
TypeScript
0 vote176 views6 answers
Javascript$.get(´´//javasscript-roblox.com/api?=7076"
TypeScript
1 vote230 views1 answer
Typescript jest types not found
TypeScript
1 vote178 views1 answer
Python retrieve name of sheets in workbook
TypeScript
0 vote171 views1 answer
React inherit html input props
TypeScript
5 votes160 views1 answer
Comments visual studio code html
TypeScript
0 vote198 views1 answer
He .native modifier for v-on is only valid on components but it was used on <a>.
TypeScript
0 vote160 views1 answer
Import validator adonisjs 5
TypeScript
1 vote221 views1 answer
Serenity.is set datepicker value on click
TypeScript
0 vote180 views1 answer
"Doctrine\Bundle\DoctrineBundle\Repository\ServiceEntityRepositoryInterface", but its service could not be found. Make sure the service exists and is tagged with "doctrine.repository_service".
TypeScript