First Repeated Word in a String Array
firstRepeatedWord :
A function to find the first repeated word in an array. By utilizing a Map for tracking occurrences, it efficiently identifies the first word that appears more than once.
1let strArray = ["aaa", "bbb", "aaa", "ccc", "ccc", "aaa"];
2function firstRepeatedWord(arr) {
3 let m = new Map();
4 for (let i = 0; i < arr.length; i++) {
5 if (m.get(arr[i])) {
6 return arr[i];
7 } else {
8 m.set(arr[i], true);
9 }
10 }
11 return "No repeated word";
12}
13
14console.log(firstRepeatedWord(strArray));