Project3
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function firstRecurringCharacter(input){
let map={};
for(let i=0;i<input.length;i++){
if(map[input[i]]!==undefined){
return input[i];
}else{
map[input[i]]=i;
}
}
return undefined;
}
firstRecurringCharacter([1,4,3,5,1,3,4,6]);
JavaScript
INFO