Repeat a String: Basic Algorithm Scripting Free Code Camp JavaScript

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[jasminherself]

So cool to have these tutorials while thinking about the exercises!

[kouIShereNOfear]

Thanks a lot. Was looking for it. Got a follower.

[mshim]

I'm plugging your channel in FCC chat :) thx 4 the help

[LuisForra]

Hi, first of all thanks a lot for your videos. You rock. Just want to share with you my solution to this exercise, it's a little bit different but gets the job done:

function repeatStringNumTimes(str, num) {
var newStr = "";
for (var i = 0; i < num; i++) {
newStr += str;
}
str = newStr;
return str;
}

[VKBteamkiller]

some funky way could be: function repeat(str, num){return

[VKBteamkiller]

function repeat(str, num){return str.repeat(num>0?num:0)}

[AwaMelvine]

Is there a problem with simply concatenating the string num number of times in the for loop?

[valikonen]

ES6 Add support for this "str.repeat(count)". But this is a classic question for interviews, and they want to see if you know regarding prototype and what is "this" of prototype context. So must make like that:

String.prototype.myRepeat = function(count) {

var result = "";

for(var i =0; i < count; i++ ) {

result += this + ' ';

}

return result;
}



AND WHEN YOU CHANGE PROTOTYPE, best practice if(! String.prototype.myRepeat) {...code...}

[thegameguy]

Javascript solution:
function repeatStringNumTimes(str, num) {
// repeat after me

var blankArray = "";
for(var i=0; i<num;i++){

blankArray+=str;
}

return blankArray;
}

repeatStringNumTimes("abc", 3);

[Crisssti]

is it wrong to use the built in method string.prototype.repeat()?
I solved the problem like this.

function repeatStringNumTimes(str, num) {
// repeat after me

if(num >= 0){
return str.repeat(num);
}
else{
return "";
}

}

repeatStringNumTimes("abc", 3);

[arikelvara]

This worked, 4 and a half years later! :D! Some of these dont work though :( .

[CristianIoan]

I used this code and it worked:


function repeatStringNumTimes(str, num) {

var blankArr = "";

if (num >= 0) {
return str.repeat(num);
} else {
return blankArr;
}
}

repeatStringNumTimes("abc", -1);



Is the code ethical?
Should I try to solve it through other methods?
Basically, I understand that for every basic algorithm you have a method that you can use (like repeat, push, join, etc.), so you don't need to take the long way to solve it.

Thank for your videos! :)

[bawbee]

Cheers ~

if (num < 0) {
var invalid = "";
return invalid;
} else {
var finalStr = str.repeat(num);
return finalStr;
}

[michaelreider]

Thanks for the videos, they've been super helpful so far for someone just learning this. Is there a reason not to use str.repeat(num) with an if statement for negative numbers besides it feeling too easy?