Softuniada 03 NEXUS 100%

function nexus(input){
	let arrayOne = input.shift().split(' ');
	let arrayTwo = input.shift().split(' ');
	nexusArr = input;
	let nexusStr = 'notNexus';


	while(nexusStr != 'nexus'){
		nexusStr = nexusArr.shift();
		if(nexusStr != 'nexus'){
			let arr = nexusStr.split(/(\d+):(\d+)\|(\d+):(\d+)/);
			let arrayOneBegin = +arr[1], arrayTwoEnd = +arr[2], arrayTwoBegin = +arr[4], arrayOneEnd = +arr[3];
			let crossing = false;

			if(isBetween(arrayOneBegin, arrayTwoBegin, arrayOneEnd) || isBetween(arrayTwoEnd, arrayTwoBegin, arrayOneEnd)
				|| isBetween(arrayTwoBegin, arrayOneBegin, arrayTwoEnd) || isBetween(arrayOneEnd, arrayOneBegin, arrayTwoEnd))
				crossing = true;

			if(crossing == true){
				let nexusValue = +arrayOne[arrayOneBegin] + +arrayOne[arrayOneEnd] + +arrayTwo[arrayTwoBegin] + +arrayTwo[arrayTwoEnd];
				if(arrayOneBegin>arrayOneEnd){
					let temp = arrayOneBegin;
					arrayOneBegin = arrayOneEnd;
					arrayOneEnd = temp;

				}
				if(arrayTwoBegin>arrayTwoEnd){
					let temp = arrayTwoBegin;
					arrayTwoBegin = arrayTwoEnd;
					arrayTwoEnd = temp;

				}
				arrayOne.splice(arrayOneBegin, arrayOneEnd-arrayOneBegin+1);
				arrayTwo.splice(arrayTwoBegin, arrayTwoEnd-arrayTwoBegin+1);
				addNexusValue(arrayOne, nexusValue);
				addNexusValue(arrayTwo, nexusValue);
			}
			crossing = false;
		}
		else{
			print(arrayOne);
			print(arrayTwo);
		}
	}

	function print(arr){
		let strLine = "";
		arr.forEach(el => strLine = strLine + ((strLine!="")?", ":"") + el );
		console.log(strLine);
	}
	function addNexusValue(arr, nexusValue){
		for(let i = 0; i < arr.length; i++)
			arr[i] = +(arr[i]) + nexusValue;
	}

	function isBetween(el, from, to){
		if(from > to){
			let temp = from;
			from = to;
			to = temp;
		}
		if(el >= from && el <= to)
			return true;
		return false;
	}

}