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Iteration

L1

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Iteration1.js
#!/usr/bin/env node;
const Utils = require('./Utils');

const main = async () => {
	let max = 5;
	if (process.argv.length == 3) {
		max = Utils.stoiWithDefault(process.argv[2], 5);
	}
	for (let i = 0; i < max; ++i) {
		console.log("Hello, world!");
	}
}
main().catch( e => { console.error(e) } );
Output
$ node Iteration1.js 5 Hello, world! Hello, world! Hello, world! Hello, world! Hello, world!
Iteration2.js
#!/usr/bin/env node;
const main = async () => {
	for (let i = 10; i >= 1; --i) {
		console.log(i);
	}
	console.log("Blastoff!");
}
main().catch( e => { console.error(e) } );
Output
$ node Iteration2.js 10 9 8 7 6 5 4 3 2 1 Blastoff!
Iteration3.js
#!/usr/bin/env node;
const main = async () => {
	console.log("Even numbers up to 100...");
	for (let i = 2; i <= 100; i += 2) {
		console.log(i);
	}
}
main().catch( e => { console.error(e) } );
Output
$ node Iteration3.js Even numbers up to 100... 2 4 6 8 10 12 14 16 18 ... 82 84 86 88 90 92 94 96 98 100
Iteration4.js
#!/usr/bin/env node;
const main = async () => {
	console.log("Floating point numbers");
	for (let d = 1.0; d < 2.01; d += 0.1) {
		console.log(d);
	}
}
main().catch( e => { console.error(e) } );
Output
$ node Iteration4.js Floating point numbers 1 1.1 1.2000000000000002 1.3000000000000003 1.4000000000000004 1.5000000000000004 1.6000000000000005 1.7000000000000006 1.8000000000000007 1.9000000000000008 2.000000000000001
Iteration5.js
#!/usr/bin/env node;
const main = async () => {
	console.log("Powers of 2 up to 256!");
	for (let i = 1; i <= 256; i *= 2) {
		console.log(i);
	}
}
main().catch( e => { console.error(e) } );
Output
$ node Iteration5.js Powers of 2 up to 256! 1 2 4 8 16 32 64 128 256
Iteration6.js
#!/usr/bin/env node;
const main = async () => {
	let s = "Hello, world! 🥰🇺🇸";
	for (let c of s) {
		console.log(c);
	}
}
main().catch( e => { console.error(e) } );
Output
$ node Iteration6.js H e l l o , w o r l d ! 🥰 🇺 🇸

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