📅 TIL #14

let output = makeOddDigits(3);
console.log(output); // --> "135"

output = makeOddDigits(5);
console.log(output); // --> "13579"

let result = "";
let count = 1; // num의 숫자가 count이기 때문에

let i = 1;
while (count <= num) {
    result += i;
    i += 2; // += 2 를 하게 되면 홀수만 입력된다.

    count++;
}
return result;

let output = replaceAll("hekko", "k", "l");
console.log(output); // --> 'hello'

let result = "";

for (let i = 0; i < str.length; i++) {
    if (str[i] === from) {
        result += to;
    } else {
        result += str[i];
    }
}
return result;

let output = makeMarginalString("abc");
console.log(output); // --> 'aababc'

output = makeMarginalString("Useong");
console.log(output); // --> 'UUsUseUseoUseonUseong'

output = makeMarginalString("");
console.log(output); // --> ''

let result = "";

for (let i = 0; i < str.length; i++) {
    for (let j = 0; j <= i; j++) {
        result += str[j];
    }
}
return result;