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#Chapter 2
##Looping a triangle
Write a loop that makes seven calls to console.log to output the following triangle:
#
##
###
####
#####
######
#######
Solution
var content = '';
for (var i = 0; i < 7; i++) {
content = content + '#';
console.log(content);
}
##FizzBuzz
Write a program that uses console.log to print all the numbers from 1 to 100, with two exceptions. For numbers divisible by 3, print Fizz instead of the number, and for numbers divisible by 5 (and not 3), print Buzz instead.
When you have that working, modify your program to print FizzBuzz, for numbers that are divisible by both 3 and 5 (and still print Fizz or Buzz for numbers divisible by only one of those).
Solution
for (i=1; i<=100; i++) {
if ( !(i%5) && !(i%3) ) {
console.log('FizzBuzz');
} else if ( !(i%5) && (i%3)) {
console.log('Buzz');
} else if ( !(i%3) ) {
console.log('Fizz');
} else {
console.log(i);
}
}
##Chess board
Write a program that creates a string that represents an 8×8 grid, using newline characters to separate lines. At each position of the grid there is either a space or a # character. The characters should form a chess board.
Passing this string to console.log should show something like this:
# # # #
# # # #
# # # #
# # # #
# # # #
# # # #
# # # #
# # # #
When you have a program that generates this pattern, define a variable size = 8 and change the program so that it works for any size, outputting a grid of the given width and height.
Solution
var size = 8;
var block = '#';
var space = ' ';
for (var i = 1; i <= size; i++) {
var line = '';
for (var y = 1; y <= size; y++){
if (i%2) {
if (y%2) {
line = line + space;
} else {
line = line + block;
}
} else {
if (y%2) {
line = line + block;
} else {
line = line + space;
}
}
}
console.log(line);
}
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