CODEWITHSUNDEEP
javascript
aguadamuz
aguadamuz

Reputation: 421

Javascript function to output string with line breaks to create a right triangle

I am taking an intro to Javascript class and am stuck on an assignment.

Write a function called drawTriangle that returns the following string. Feel free to debug-print using console.log, but make sure that the function actually returns a string.

Note that in a string, the character for a carriage return (the equivalent of hitting the “Enter” or “Return” key) is “\n”.

#
##
###
####
#####
######
#######

My initial thought was that I would use a loop to populate an array (with the hope of finding a way to output the array as a string with line breaks) but I am stuck at that point and not sure how to move forward (or if I am going in the wrong direction).

My current script is as follows:

function triangle(number) {
    var triElements = [];
    var pound = '#';
    var rightTriangle = '';
    var lineBreak = '\n';
    for (var i = 0; i < number; i++) {
        var rightTriangle = rightTriangle.concat(pound)
        triElements.push(rightTriangle);
    }
    return triElements;
}

console.log(triangle(6))

Upvotes: 2

Views: 818

Answers (2)

Niels van Reijmersdal
Niels van Reijmersdal

Reputation: 2035

You are returning an array and not the triangle in a single string. I think you are over thinking it by using an array to store the result, just use a string like in this example:

function triangle(numOfLayers) {
    var result = '';
    var symbol = '#';
    var layer = '';
    var lineBreak = '\n';
    for (var i = 0; i < numOfLayers; i++) {
        layer += symbol; // add one symbol to last layer
        result += layer + lineBreak; // append an extra line to the result
    }
    return result;
}

console.log(triangle(6))

Upvotes: 2

Paul L
Paul L

Reputation: 2260

using triElements.join("\n"); in your return statement

Upvotes: 1

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