... is the spread operator. https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Spread_syntax

Use Objects and sort them

wath is this "testCorrectGroups" , because i cant pass this test, and i have no idea why

You can print the random tests using

System.out.println 

how the random test are formated, unless they are of a wrong format there are no other way for my code to be wrong, tested everythinck manualy( JAVA)

Im hardstuck with the " When two people have the same winning number sort them alphabetically by their firstnames." , someone managed to solve this with a HashMap / Treemap ?

Please don't post your solutions in discourse section. There's a solutions page where they can be discussed, or you can use a link to your solution.

m += t probably didn't work, because you didn't have the line var m = 0, as @rowcased explained.

Also, if you DO want to post a code snippet (when asking for help or whatever), use proper formatting for code blocks, links, etc...

wath ... mean ?

dont make me feel more stupid then I already felt, until 5 min ago I din't know about regex.

you can't use += while initiating m, so the second thing doesn't really work either, you just get NaN. did it really work for you?