question57-2.js

// Patterns - 2

var numbrs = "11111";

for (var i = 5; i > 0; i--) {
    if (i == 4) {
        numbrs = "2222";
    } else if (i == 3) {
        numbrs = "333";
    } else if (i == 2) {
        numbrs = "22";
    } else if (i == 1) {
        numbrs = "1";
    }
    console.log(numbrs);
}

for (var j = 1; j <= 5; j++) {
    var num = "54321";
    num = num.replace(j,"*");
    console.log(num);
}

str = "";

for (var i = 0; i < 5; i++) {
    str = str + "*";
    console.log(str);
}

console.log("");

str2 = "******";

for (var j = 5; j>0; j--) {
    str2 = str2.slice(1) ;
    console.log(str2);
}

// Write a program to print Floyd’s triangle as shown below for given N lines:

var readline = require('readline-sync');
var n = readline.question("Enter no. of lines: ");

var x = 1;

for (var i = 0; i < n; i++) {
    arr = [];
    while (arr.length <= i) {
        arr.push(x)
        x++;
    }
    console.log(arr.join(" "));
}