StringyStrings.js

// Write a function that takes one argument, a positive integer, and returns a string of alternating '1's and '0's, always starting with a '1'. The length of the string should match the given integer.

const stringy = (num) => {

    let counter = 0
    let output = '';
    do {
        counter % 2 === 0 ? output += '1' : output += '0'
        counter ++;
    }
    while (counter < String(num));

    return output;
}

console.log(stringy(6));    // "101010"
console.log(stringy(9));    // "101010101"
console.log(stringy(4));    // "1010"
console.log(stringy(7));    // "1010101"