How to create new arrays of even, odd and large numbers from an array and print their values sequentially? - Must be use callback function to do this

Question

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Problem:
1. Find the even, odd, and numbers greater than 6 and make an even & odd number array differently, last make an array of numbers greater than 6.
2. Show the results of 3 arrays serially.
3. Show the values of even, odd and large numbers together consistently.

The callback function must be used.

My inputted array:

JavaScript

var userArray = [4, 7, 2, 8, 9, 10, 15, 5, 1, 6, 12]

My expected output:

JavaScript

evenArray = [4,2,8,10,6,12]
oddArray = [7,9,15,5,1]
greaterNumbArray = [7,8,9,10,15,12]
all values between 3 arrays= 4 2 8 10 6 12 7 9 15 5 1 7 8 9 10 15 12

What I have tried:

Here is my code:

JavaScript

function behindOperation_2(arrayValue_2){
  var allArray_2 = [
    evenArray_2 = [],
    oddArray_2 = [],
    greaterArray_2 = []
  ]
  for(var i = 0; i<arrayValue_2.length; i++){
    if (arrayValue_2[i] % 2 === 0){
      allArray_2[0].push(arrayValue_2[i])
    }
    if(arrayValue_2[i] % 2 === 1){
      allArray_2[1].push(arrayValue_2[i])
    }
    if(arrayValue_2[i] > 6){
      allArray_2[2].push(arrayValue_2[i])
    }
  }
  for(var a = 0; a < allArray_2.length; a++){
    for(var v = 0; v<allArray_2[a].length; v++){
     console.log (allArray_2[a][v])
    }
  }
}

function dataFinding (getArray, behindOperation){
  var behindResult = behindOperation(getArray)
  return behindResult
}

var newResult_2 = dataFinding(userArray, behindOperation_2)
console.log(newResult_2);

output is: 4 2 8 10 6 12 7 9 15 5 1 7 8 9 10 15 12

Posted 8-Aug-21 9:00am

Swadip Singho Roy

Updated 9-Aug-21 8:57am

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3 solutions

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Patrice T · Answer 1 · 2021-08-08T09:54:00

Solution 1

Since you didn't stated any problem, just a little improvement :

JavaScript

for(var a = 0; a < allArray_2.length; a++){
  for(var v = 0; v<allArray_2[a].length; v++){
   console.log (allArray_2[a][v])
  }
  // print an end of line here to separate the 3 lists
}

Posted 8-Aug-21 9:54am

Patrice T

Comments

Swadip Singho Roy 8-Aug-21 15:58pm

@Patrice I want to do all the operations from the dataFinding function

Patrice T 8-Aug-21 16:01pm

Use Improve question to update your question.
So that everyone can pay attention to this information.

Richard Deeming · Answer 2 · 2021-08-08T22:08:00

Assuming your homework doesn't forbid it, use Array.filter:
Array.prototype.filter() - JavaScript | MDN[^]

Eg:

JavaScript

const words = ['spray', 'limit', 'elite', 'exuberant', 'destruction', 'present'];
const result = words.filter(word => word.length > 6);
console.log(result);
// expected output: Array ["exuberant", "destruction", "present"]

In this example, word => word.length > 6 is the callback function.

Dimiter2011 · Answer 3 · 2021-08-09T08:57:00

Solution 3

Separating Odd from Even - will solve part of your question
myEven = []; myOdd = [];
x = myArr.length; y = 0;
for (var j = 0; j <= x; j++ ) {
y = (j % 2) // if 0 even, if remainder 1 odd
if (y==0) {
myEven.push(j)
console.log("Even: "+j) ; }
else { myOdd.push(j)
console.log("Odd: "+j); }}
myEven.splice(0, 1); // remove 0 (0/2 = 0)
console.log("Even numbers: "+myEven);
console.table("Odd numbers: "+myOdd);

To append Odd to Even - Just in case you want that
myEven.push.apply(myEven, myOdd);

Posted 9-Aug-21 8:57am

Dimiter2011

Comments

Richard Deeming 10-Aug-21 3:48am

If you don't want to include 0 in the result, then why start your loop at 0?

On the other hand, why would you not include 0 - which is an even number[^] - in the array of even numbers?

Dimiter2011 10-Aug-21 14:37pm

The loop has to include the first number, that's why is needed.

Richard Deeming 11-Aug-21 3:03am

The question makes no mention of that. The assignment doesn't even require that the solution includes a loop, let alone impose any restrictions on the range of the loop variable.

It looks like you're answering a totally different question.

How to create new arrays of even, odd and large numbers from an array and print their values sequentially? - Must be use callback function to do this

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