Program
/**
* Is Unique: Implement an algorithm to determine if a string has all unique characters,
*/
function isUniqueCharacters(str) {
// using set to store only unique chars
let set = new Set();
// loop through the string and store it to set
for (let i=0; i<str.length; i++) {
set.add(str[i]);
}
return str.length === set.size ? true : false
}
Sample Output
console.log(isUniqueCharacters('javascript'));
console.log(isUniqueCharacters('question'));
/**
* Sample Input 1: javascript
* Sample Output 1: false
*
* Sample Input 2: question
* Sample Output 2: true
*/
Aravin