q1.js

/* QUESTION 1:
	
	Clean the room function: 
	given an input of [1,2,4,591,392,391,2,5,10,2,1,1,1,20,20], 
	1. make a function that organizes these into individual array that is ordered. 
	 For example answer(ArrayFromAbove) 
	 should return: [[1,1,1,1],[2,2,2], 4,5,10,[20,20], 391, 392,591]. 

	2. Bonus: Make it so it organizes strings differently 
	from number types. i.e. [1, "2", "3", 2] should return [[1,2], ["2", "3"]]

*/

const q1_array = [1,2,4,591,392,391,2,5,10,2,1,1,1,20,20]
const q1_arrayStr = [1, "2", "3", 2];

function cleanArr(array) {
	let sortedArray = array.slice().sort((a,b)=>a-b);

	let temp = []; // where dupes are placed temporarily
	let subArray = []; // where we push subarray of dupes
	let cleanArr = [];
	let arrString = sortedArray.filter(item => typeof item === "string");
	let arrNum = sortedArray.filter(item => typeof item === "number");

	for(let i = 0; i < arrNum.length;i++) {
		// check prev and next val and push to temp
		if(arrNum[i] === arrNum[i+1]) { // this 1 === next 1 ADD
			temp.push(arrNum[i]);
		} else if(arrNum[i] === arrNum[i-1]) {
			// [1,1,1,1] => 3 == (3-1) => on prev check reset temp
    		// i: 0 1 2 3
			temp.push(arrNum[i]);
			subArray.push(temp);
			temp = [];
		} else if(arrNum[i] !== arrNum[i+1]) { // no duplicates
			subArray.push(arrNum[i]);
		}
	}
	
	cleanArr = cleanArr.concat([subArray], [arrString]);
 	// if arrayString is empty then remove array
    if(cleanArr[1][0] === undefined ) {
  		cleanArr.pop()
    }
    return cleanArr;
}

console.log("////// START OF Q1 //////");

console.log("\t array with numbers =>", cleanArr(q1_array));
console.log("\t array with strings =>", cleanArr(q1_arrayStr));

console.log("////// END OF Q1 //////");