Run results for: Check better performance

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 16_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.2 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 16

Operating system: iOS 16.2

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
Anas	1211863.0 Ops/sec
Nabil	6419974.5 Ops/sec

Script Preparation code:

function anas(array, arraysCount) {

	let arrayLength = array.length;

	if( arrayLength == 0 ) {
  	return array;
  }
  
  if( arraysCount > arrayLength ) {
  	return array;
  }
  
  let result = [];
  let newArray = [];
  
	const newArraysLength = arrayLength % arraysCount == 0  ? Math.floor( arrayLength / arraysCount) : Math.ceil ( arrayLength / arraysCount);
  
  // We loop 
  for( let i = 0 ; i < arrayLength; i++ ) {
    if( i % newArraysLength == 0 ) {
    	if( i > 0 ) {
      	result.push( newArray );
        newArray = [];
      }
    }
    
    newArray.push( array[i] );
  }
  
  let canBeSplitEqually = ( ( arrayLength  ) % newArraysLength == 0 );
  console.log("canBeSplitEqually = ", canBeSplitEqually);
  
  if( !( canBeSplitEqually ) ) {
  	result.push( newArray );
  }

	return result;
}

function nabil  (
  array,
  n
)  {

  const elementsPerGroup = Math.round(array.length / n);
  let result = [];
  let positionIndex = 0;
  for (let i = 1; n >= i; i++) {
    const lastIndex =
      i === n
        ? array.length - positionIndex + positionIndex
        : elementsPerGroup + positionIndex;
    result.push(array.slice(positionIndex, lastIndex));
    positionIndex = positionIndex + elementsPerGroup;
  }
  return result;
};

Tests:

Anas
anas([1, 2, 3, 4, 5], 3)
Nabil
nabil([1, 2, 3, 4, 5], 3)

Run results for: Check better performance

Anas

Nabil