interview

gistfile1.txt

//1

let num = 0;

let reverse = (num) => {
	if (num < 0) {
		let num1 = num.toString().split('').slice(1).reverse().join('');
		return Number(num1) * -1;		
	} else {
		let num1 = num.toString().split('').reverse().join('');
		return Number(num1);
	}
}

console.log(reverse(num));

//2

let arr1 = ['a','b'];
let arr2 = ['a', 'c', 'e'];

let merge = (arr1, arr2) => {
	let result = [];
	let ARR1;
	let ARR2;
	let len = Math.max(arr1.length, arr2.length);
	if (arr1.length === len) {
		ARR1 = arr1;
		ARR2 = arr2;
	} else {
		ARR1 = arr2;
		ARR2 = arr1;
	}
	for (var i = 0; i < ARR1.length; i++) {
		var temp = ARR1[i];
		if (ARR2.indexOf(temp) < 0) {
			result.push(temp);
		}
	}
	return result;
}

console.log(merge(arr1, arr2));

//3

let check = (num) => {
	let temp = num.toString().split('');
	let value = 0;
	for (var i = 0; i < temp.length; i++) {
		value += temp[i] * temp[i] * temp[i];
	}
	return value - num === 0? true: false;
}

let armstrongNumber = (start, end) => {
	let result = [];
	for (var i = start; i <= end; i++) {
		if (check(i)) {
			result.push(i);
		}
	}
	return result;
}

console.log(armstrongNumber(1, 2000));

console.log(check(370));