JSFiddle - React, Tailwind, and code Playground

by PARK KYUNGSIK

HTML

<div id='divId'>

</div>

JavaScript

var inText = 'programming';
var inArr = [];

for (var i=0; i<inText.length; i++) {
	inArr[i] = inText.charAt(i);
}

inArr.sort();

var repoArr = [];
var idxArr = 0;
var idx = 0;
for (var i=idx; i<inArr.length; i++) {
	if (inArr[idx] == inArr[i+1]) {
  	repoArr[idxArr++] = inArr[idx];
  } else {
  	idx = i + 1;
  }
}

$('#divId').text(repoArr.toString());