Build a Pyramid Generator - Build a Pyramid Generator

JavaScript
1

Tell us what’s happening:

I saw that others have taken a very different approach to this but my code does the job without issue. I don’t understand why it doesn’t pass the test.

I spaces before and after the pyramids are not pretty I admit but I don’t understand their purpose anyway.

Any help is appreciated. Thanks in advance.

Your code so far

function pyramid(char, rows, isFlipped) {
    console.log(" ");
    // Upright
    if (isFlipped === false) {
        let size = 1;
        for (let i = 0; i < rows; i++) {
            console.log(" ".repeat(rows - i) + char.repeat(size));
            size+= 2;
        }
    console.log(" ");
        
    }
    // Upside down
    else {
        let size = rows* 2 - 1;
        for (let i = 0; i < rows; i++) {
            console.log(" ".repeat(i) + char.repeat(size));
            size-= 2;
        }
    console.log(" ");

    }
}

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:137.0) Gecko/20100101 Firefox/137.0

Challenge Information:

Build a Pyramid Generator - Build a Pyramid Generator
https://www.freecodecamp.org/learn/full-stack-developer/lab-pyramid-generator/lab-pyramid-generator

2

Hi @theseagull

The keyword is return.

  1. pyramid("o", 4, false) should return "\n o\n ooo\n ooooo\nooooooo\n".
  2. pyramid("p", 5, true) should return "\nppppppppp\n ppppppp\n ppppp\n ppp\n p\n".

Happy coding

3

Still don’t work :((

function pyramid(char, rows, isFlipped) {
    
    // Upright
    if (isFlipped === false) {
        let size = 1;
        let result = "";
        for (let i = 0; i < rows; i++) {
            result += " ".repeat(rows - i) + char.repeat(size) + "\n";
            size+= 2;
        }
        return result;
    }
    // Upside down
    else {
        let size = rows* 2 - 1;
        result = "";
        for (let i = 0; i < rows; i++) {
            result += " ".repeat(i) + char.repeat(size) + "\n";
            size-= 2;
        }
        return result;
    }
}
4

The pyramid needs to have a new line at the end.

image
image122×136 787 Bytes

Check for a new line at the start and end for both types of pyramids.

5

:cry:

function pyramid(char, rows, isFlipped) {
    
    // Upright
    if (isFlipped === false) {
        let size = 1;
        let result = "";
        for (let i = 0; i < rows; i++) {
            result += " ".repeat(rows - i) + char.repeat(size) + "\n";
            size+= 2;
        }
        return "\n" + result + "\n";
    }
    // Upside down
    else {
        let size = rows* 2 - 1;
        result = "";
        for (let i = 0; i < rows; i++) {
            result += " ".repeat(i) + char.repeat(size) + "\n";
            size-= 2;
        }
        return "\n" + result + "\n";
    }
}
6

Add a console.log() for each of the pyramid() calls using the arguments from the tests.

For "o" highlight the console to see the spacing and line breaks.
For "p" see if you can figure out what is happening.

7

Now the “p” works but the “o” doesn’t. I am so confused and brain is starting to hurt.

By the way, since I have you here. How trash is my code? Is it good enough or should I reconsider the entire thing?

function pyramid(char, rows, isFlipped) {
    
    // Upright
    if (isFlipped === false) {
        let size = 1;
        let result = "";
        for (let i = 0; i < rows; i++) {
            result += " ".repeat(rows - i) + char.repeat(size) + "\n";
            size+= 2;
        }
        return "\n" + result;
    }
    // Upside down
    else {
        let size = rows * 2 - 1;
        let result = "";
        for (let i = 0; i < rows; i++) {
            result += " ".repeat(i) + char.repeat(size) + "\n";
            size-= 2;
        }
        return "\n" + result;
    }
}
console.log(pyramid("o", 4, false));
console.log(pyramid("p", 5, true));
8

Notice how the top pyramid is further from the edge of the console, compared to the second pyramid.

image
image125×319 1.46 KB

Your code is easy to read, good use of comments. :smiley:

9

Thank you for the kind words. But if I am lacking somewhere, I’d appreciate the advice.

For example, I did a dirty solution and just added a minus 1 here to pass the test.

result += " ".repeat(rows - i - 1) + char.repeat(size) + "\n";

Not sure if there is a proper way to do it but like I said, my brain really dead at this point.

But yeah, thank you so much for the help.