Eloquent JS: Chapter 2 Exercises

Mixing it up a little bit by changing the Daily Exercise post to reflect a refresher on my JS Skills. I am reading, re-reading, Eloquent Javascript. It is a good reference for learning and one that have pointed new students towards. Along that note for current and future here are easy to understand solutions:

Looping a Triangle
Write a loop that makes n (seven initially in the exercise part one but I’m skipping to part two) calls to console.log to output the following triangle:
–
#
##
###
####
–

`
function createTriangle(max)
{
let charToPrint = “#”;

for(let i=0;i<max-1;i++)
{
    console.log(charToPrint.repeat(i));
}

}
`

FizzBuzz
Write a program that uses stdout (console.log) to print all the numbers 1 to 100, with two exceptions. For numbers divisible by 3 print “FIZZ”, for those divisible by 5 print “BUZZ” and for those divisble by both print “FIZZBUZZ”. (The book calls this out as used in interviews and it has always been one of my favorite interview questions!)

`
function fizzBuzz(max)
{
for(let i=1;i<max;i++)
{
let stringToPrint = i;

    if((i%3==0)&&(i%5==0))
    {
            stringToPrint = "FIZZBUZZ";
    }else{
        if(i%3==0)
        {
                stringToPrint = "FIZZ";
        }
        else if(i%5==0)
        {
                stringToPrint = "BUZZ";
        }
    }

    console.log(stringToPrint)
}

}
`

Chessboard
Write a program that creates a string that represents an 8x8 grid, with newlines to seperate lines. At each position of the grid there is either a space or # char. Part 2, create a binding for size to create grids of arbitrary size.
–

#

#

#

#

–

`
function chessboard(gridSize)
{
for(let i=0;i<gridSize;i++)
{
let rowString = “”;

    for(let j=0;j<gridSize;j++)
    {
        if(i%2==0)
        {
            if(j%2==0)
            {
                rowString += " "
            }
            else
            {
                rowString += "#"
            }
        }
        else
        {
            if(j%2==0)
                {
                    rowString += "#"
                }
                else
                {
                    rowString += " "
                }
        }
    }

    console.log(rowString);
}

}
`