The longest substring

function func(line) {
  let reg = /(\w)\1+/g;
  let longest = line.match(reg).sort((a, b) => {
    a.length - b.length
  }).pop();
  console.log(line + ' : ' + longest);
}

func('ddvvrwwwrggg');
func('sdsffffse');
func('abababaab');
func('aaabbcaaaa');
func('aaaasdfbbbbyyyweryyyuurweuuuuuu');
 Run code snippet

Source: stackoverflow.com

Similar codes

0 vote253 views1 answer
Java copy string
Java
3 votes237 views1 answer
Java string multiply
Java
1 vote218 views1 answer
Pivot in array
Java
5 votes248 views4 answers
Kotlin vs java
Java
0 vote219 views10 answers
Arrays with for loops
Java
0 vote232 views1 answer
Linux mint switch language
Java
0 vote247 views1 answer
Why String is popular HashMap key in Java?
Java
1 vote243 views1 answer
Java print treemap
Java
0 vote288 views2 answers
Turn on device location android programmatically
Java
0 vote254 views1 answer
8233*4
Java