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Filtering string to contain unique characters in JavaScript
Problem
We are required to write a JavaScript function that takes in a string str. Our function should construct a new string that contains only the unique characters from the input string and remove all occurrences of duplicate characters.
Example
Following is the code −
const str = 'hey there i am using javascript';
const removeAllDuplicates = (str = '') => {
let res = '';
for(let i = 0; i < str.length; i++){
const el = str[i];
if(str.indexOf(el) === str.lastIndexOf(el)){
res += el;
continue;
};
};
return res;
};
console.log(removeAllDuplicates(str));Output
Following is the console output −
Ymungjvcp
Updated on: 17-Apr-2021
519 Views
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