I'm looking to identify the longest substring within a given string.
const str = "aassqwertybbvvqwertyuivv";
const longestSubstring = str.split("").reduce((prevValue, currValue, index, arr) => {
let substr = ""
if (prevValue !== currValue) {
substr = currValue + substr;
}
return substr;
}, "");
console.log(longestSubstring)
The expected output is 8 (qwertyui).
Currently, it only provides me with the last substring found.
Is this what you were looking for?
const string = "aassqwertybbvvqwertyuivv"
const findLongestSubstring = (max, current) => current.length > max.length ? current : max
const longestSubstring = string.replace(/(.)\1+/g, ' ')
.split(' ')
.reduce(findLongestSubstring, '')
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