I Need to get this output:
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
What I've tried so far:
function getPyramid() {
let nums = 0;
for (let i = 1; i <= 15; i++) {
for (let n = 1; n < i; n++) {
console.log(n);
}
console.log('<br/>');
}
return nums;
}
getPyramid();Apart from notes given by jnpdx in the comments, I'd add some:
i, j<br/> for HTML new line, In JS we do \n for that!number++ is same number += 1(expression)?true:false instead of if/else
function getPyramid(Lines) {
let number = 1; // the counter to display on each line of pyramid!
for (let i = 1; i <= Lines; i++) {
let str = '';//line to display
for (let j = 1; j <= i; j++) {
str += number++;//incrementing counter
str += j!=i ? ' ' : ''; //to make space, but not at the end of line.
}
console.log(str);//display that line
}
}
getPyramid(5); for (let i = 1 ; i <= 5; i++)
{
let s = []
for (let x = i * (i - 1) / 2 + 1; x <= i * (i + 1) / 2; x++)
{
s.push(x)
}
console.log(s.join(" "))
}It is possible to do with one single loop
function getPyramid() {
let nums = 0;
let count = 1;
let numbers = ''
for (let i = 0; i <= 15; i++) {
if(count === nums){
count++
nums = 0;
console.log(numbers)
numbers = ''
}
nums ++
numbers += ' ' + (i +1)
}
}
getPyramid();function getPyramid(rows) {
let nums = 0;
let count = 1;
let numbers = ''
let i = 1
while (count < rows + 1 ) {
if(count === nums){
count++
nums = 0;
console.log(numbers)
numbers = ''
}
nums ++
numbers += ' ' + i
i++;
}
}
getPyramid(5);