CODEWITHSUNDEEP
javascript
German Gonzalez
German Gonzalez

Reputation: 311

Print a triangle right to left

I'm begining with programming. I'm using javascript.

For practice, I print a triangle like this:

*
**
***
****
*****

but I want to print right to left, like this: 

    *
   **
  ***
 ****
*****

So, with my noob knowledge, I wrote this code:

var line = '';

var size = 5;

for (var i = 0; i <= size; i++) {
    for (var j = 0; j <= size; j++) {
        if (j == size - i) {
            line += '#';
            if (i != 0) {
                for (var k = j; k < size; k++) {
                    line += '#';
                }
            }
        } else {
            line += ' ';
        }
    }

    line += '\n';  
}

console.log(line);

It works! But I think it's awful.

Could someone give me some advice?

Thanks very much!

Upvotes: 0

Views: 1849

Answers (4)

nour ahmed
nour ahmed

Reputation: 19

function staircase(n) {
  // Write your code here
  let output = ""
  for (let i = 1; i <= n; i++) {
    output += " ";
  }
  for (let i = 1; i <= n; i++) {
    output = output.slice(1, output.length);
    output += "#";
    console.log(output)
  }
}

Upvotes: 1

Roli Agrawal
Roli Agrawal

Reputation: 2466

You can try this one also

function print(n){
for (var i=1;i<=n;i++) {
        var str = "";
        for (var j=0;j<n;j++) {
            str+= (j >= n-i)?"*":" "
       }
        console.log(str);
    }}
print(9)

Upvotes: 1

toastrackengima
toastrackengima

Reputation: 8732

A little shorter:

var size = 5;
for (i=0;i<size;i++) {
    var txt = ""
    for (j=1;j<=size;j++) {
        txt+=" *"[(j>=size-i)+0]
    }
    console.log(txt)
}

Upvotes: 1

htoniv
htoniv

Reputation: 1668

Please use this. 

var N = 5;//based on your input
for (var i=0;i<N;i++) {
        var str = "";
        for (var j=0;j<N;j++) {
            if (j >= N-i-1) {
                str += "*";
            } else {
                str += " ";
            }
        }
        console.log(str);
    }

Upvotes: 0

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