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- function mutation(arr) {
- var word1 = arr[0].toLowerCase();
- var word2 = arr[1].toLowerCase();
- for(var i = 0; i< word2.length;i++){
- if(word1.indexOf(word2[i]) === -1){
- return false;
- }
- }
- return true;
- }
- mutation(["hello", "hey"]);
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