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Constructing a string of alternating 1s and 0s of desired length using JavaScript
Problem
We are required to write a JavaScript function that takes in a number n. Starting with ‘1’ our function should construct a string of length n that contains ‘1’ and ‘0’ alternatingly.
Example
Following is the code −
const num = 12;
const buildString = (num = 1) => {
let res = '';
for(let i = 0; i < num; i++){
if(i % 2 === 0){
res += 1;
}else{
res += 0;
};
};
return res;
};
console.log(buildString(num));Output
101010101010
Updated on: 19-Apr-2021
447 Views
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