Question

Hi, i need to generate into groups the array.For example:

([ 'a', 'b', 'c', 'd' ], 2)=>[ [ 'a', 'b' ], [ 'c', 'd' ] ]

([ { id: 5 }, { id: 10 }, { id: 20 } ], 2)=>. ([ [ { id: 5 }, { id: 10 } ], [ { id: 20 } ] ])

In javascript please

utils={ }

utils.generateGroups = () => {
	// INPUT arguments
	// - A 1-dimensional array
	// - The length of each subgroup that should be created
	//
	// RETURN value
	// - A 2-dimensional array of arrays. Each subarray should be as long as the length argument passed in to the function, except for the final subarray, which can be shorter and contain a "remainder" smaller than that length.
	//
	//your code here
	};

Answer 1

Code

utils = {}

utils.generateGroups = (arr, size) => {

// INPUT arguments

// - A 1-dimensional array

// - The length of each subgroup that should be created

//

// RETURN value

// - A 2-dimensional array of arrays. Each subarray should be as long as the length argument passed in to the function, except for the final subarray, which can be shorter and contain a "remainder" smaller than that length.

//

let newarr = [], finalArr = []

for (let i = 0; i < arr.length; i++) {

if (newarr.length < size) {

newarr.push(arr[i])

}

else {

finalArr.push(newarr)

newarr = [arr[i]]

}

}

finalArr.push(newarr)

return finalArr

};

console.log(utils.generateGroups(['a', 'b', 'c', 'd'], 2))

console.log(utils.generateGroups([ { id: 5 }, { id: 10 }, { id: 20 } ], 2))

Screenshot

Output