How to determine if a string contains a sequence of repeated letters

Question

Using JavaScript, I need to check if a given string contains a sequence of repeated letters, like this:

\"aaaaa\"

How can I do t

Answer 1

var char = "abcbdf..,,ffffd,,,d,,,";
var tempArry={};

for (var i=0; i < char.length; i++) {
    if (tempArry[char[i]]) {
        tempArry[char[i]].push(char[i]);
    } else {
        tempArry[char[i]] = [];
        tempArry[char[i]].push(char[i]);
    }
}

console.log(tempArry);

This will even return the number of repeated characters also.