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JavaScript

Posted by kaganulucay
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kaganulucay
Full Stack JavaScript Techdegree Student 16,491 Points

Algorithmic Thinking

Guys , today i'm trying to implement Great Common Divisor with JavaScript. But seriously, even if my math level is really good, it is really hard for me to think in programming. What is your advice in order to solve math problems or any problems by thinking as programmer.

All in all, I found 3 approach to solve my problem , but it really took time. Is that normal?

function greatCommonDivisor(a,b){
    if (b===0){
        return a;
    }
    return greatCommonDivisor(a,a%b);
}

function greatCommonDivisor2(a,b){
    if (a ==0){
        return(b);
    }
    while(b > 0){
        if (a > b) {
            a = a - b;
        }else{
            b = b - a;
        }
    }
    return(a);
}


function greatCommonDivisor3(a,b){
    while(a > 0 && b > 0){
        if (a > b) {
            a = a % b;
        }else{
            b = b % a;
        }
    }
    return(a+b);
}
        if (a > b) {
            a = a % b;
        }else{
            b = b % a;
        }
    }
    return(a+b);
}
Colin Marshall
Colin Marshall
32,861 Points

I fixed your post so the code displays properly. Make sure there is a line break before your opening and closing back ticks.

kaganulucay
.a{fill-rule:evenodd;}techdegree
kaganulucay
Full Stack JavaScript Techdegree Student 16,491 Points

thanks Colin Marshall :)

2 Answers

Sage Elliott
Sage Elliott
30,003 Points
Sage Elliott
Sage Elliott
30,003 Points

As with many skills it takes practice. There are many sources/books on learning algorithms and that way of thinking. You may be interested in practicing with Codewars or Hackerrank. I've been seeing several coding bootcamps have students prepare with hacker rank questions. They also have a good diversity of the type of questions you may want to solve.

kaganulucay
seal-mask
.a{fill-rule:evenodd;}techdegree
kaganulucay
Full Stack JavaScript Techdegree Student 16,491 Points
kaganulucay
.a{fill-rule:evenodd;}techdegree
kaganulucay
Full Stack JavaScript Techdegree Student 16,491 Points

Hi Sage Elliott ! I'm already user in the hackerrank , for example in this problem , i can easily solve on the paper by using math. But when it comes to code, its really hard me to convert it as code. That's my problem. I dont know what to do.

Stephen Whitfield
Stephen Whitfield
16,771 Points

When I first started concocting algorithms through code, this was a problem for me too. If you were able to look through the history of my questions/comments on Treehouse, you'd see quite a few dealing with just this. Sage is right - you have to just practice. Touch code as much as you can and try to think of an approach to a problem before coding first. That'll help you design solutions a lot better.

Sage Elliott
Sage Elliott
30,003 Points

My only real advice I can give is to keep learning. As you are able to think more naturally in the context of a programming language it will get much easier to visualize the problem in code :)