What is the best way to determine the maximum value from multiple arrays?

Question

What is the best way to determine the maximum value from multiple arrays?

I am working on a function that needs to find the maximum values for any number of arrays. The user should be able to input 1 array or up to 10 arrays, and the output should display the max values for each of these arrays.

However, at the moment, my code only functions properly when one array is provided. I need help identifying what is causing this issue.

function getMaxs(args){
array = args;
var max = array[0];

for(i = 0; i < array.length; i++){
    if(max < array[i]){
        max = array[i];
    }
}
console.log(max);
return max;

}

getMaxs([5, 6, 7], [18, 19, 20], [5, 7, 3, 10]); // returns 7
getMaxs([5, 6, 7]); // returns 7
getMaxs([18, 19, 20], [5, 10, 74, 394]); // returns 20

javascript arrays function

Answer 1

Answer №1

If you are looking to find the maximum value in each array provided:

const getMaximums = (...args) => args.map(array => Math.max(...array));

console.log( getMaximums([8, 9, 10], [21, 22, 23], [8, 10, 6, 13]) ); // [10, 23, 13]
console.log( getMaximums([8, 9, 10]) );                                // [10]
console.log( getMaximums([21, 22, 23], [8, 13, 87, 456]) );            // [23, 456]

Answer 2

If you are looking to find the maximum value in each array provided:

const getMaximums = (...args) => args.map(array => Math.max(...array));

console.log( getMaximums([8, 9, 10], [21, 22, 23], [8, 10, 6, 13]) ); // [10, 23, 13]
console.log( getMaximums([8, 9, 10]) );                                // [10]
console.log( getMaximums([21, 22, 23], [8, 13, 87, 456]) );            // [23, 456]

Answer 3

Answer №2

If you're indifferent about which sub-array the result originates from, you can utilize Array.prototype.flat:

function findMaxValue(array) {
    const flatArray = array.flat();
    return Math.max(...flatArray);
}

const arr = [[5, 6, 7], [18, 19, 20], [5, 7, 3, 10]];
const maxVal = findMaxValue(arr);

console.log(maxVal);

Answer 4

If you're indifferent about which sub-array the result originates from, you can utilize Array.prototype.flat:

function findMaxValue(array) {
    const flatArray = array.flat();
    return Math.max(...flatArray);
}

const arr = [[5, 6, 7], [18, 19, 20], [5, 7, 3, 10]];
const maxVal = findMaxValue(arr);

console.log(maxVal);

Answer 5

Answer №3

It seems like you're interested in learning about rest parameters.

Here is an example implementation:

function findMaxInArrays(...arrays) {
    return Math.max(...arrays.flat());
}

// example usage
findMaxInArrays([5, 6, 7], [18, 19, 20], [5, 7, 3, 10]); // output: 20
findMaxInArrays([5, 6, 7]); // output: 7
findMaxInArrays([18, 19, 20], [5, 10, 74, 394]); // output: 394

Additionally, you can explore The arguments object as an alternative to rest parameters. If your environment doesn't support the flat method, consider finding a polyfill for it.

Answer 6

It seems like you're interested in learning about rest parameters.

Here is an example implementation:

function findMaxInArrays(...arrays) {
    return Math.max(...arrays.flat());
}

// example usage
findMaxInArrays([5, 6, 7], [18, 19, 20], [5, 7, 3, 10]); // output: 20
findMaxInArrays([5, 6, 7]); // output: 7
findMaxInArrays([18, 19, 20], [5, 10, 74, 394]); // output: 394

Additionally, you can explore The arguments object as an alternative to rest parameters. If your environment doesn't support the flat method, consider finding a polyfill for it.

Answer 7

Answer №4

To combine arrays and make them one, you can utilize the .flat() function in the following manner:

function mergeArrays(args){
  array = args.flat();
  //this will treat them as a single array
  ....
}

However, it's important to note that the .flat() function might not be supported on older browsers. In that case, you can achieve the same result using the following alternative method:

array = args.reduce((acc, val) => acc.concat(val), [])

The outcome will be identical.

Answer 8

To combine arrays and make them one, you can utilize the .flat() function in the following manner:

function mergeArrays(args){
  array = args.flat();
  //this will treat them as a single array
  ....
}

However, it's important to note that the .flat() function might not be supported on older browsers. In that case, you can achieve the same result using the following alternative method:

array = args.reduce((acc, val) => acc.concat(val), [])

The outcome will be identical.

Answer 9

Answer №5

While Iraklis' solution works well with an array of arrays, if you prefer to pass arrays as separate arguments, you can utilize the Spread syntax and Rest parameters:

function calculateMax(...arrays) {
  const max = Math.max(...arrays.flat())
  console.log(max) // DEBUG
  return max
}
calculateMax([5, 6, 7], [18, 19, 20], [5, 7, 3, 10])
calculateMax([5, 6, 7])
calculateMax([18, 19, 20], [5, 10, 74, 394])

It's important to consider browser compatibility when using these features:

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Spread_syntax

Answer 10

While Iraklis' solution works well with an array of arrays, if you prefer to pass arrays as separate arguments, you can utilize the Spread syntax and Rest parameters:

function calculateMax(...arrays) {
  const max = Math.max(...arrays.flat())
  console.log(max) // DEBUG
  return max
}
calculateMax([5, 6, 7], [18, 19, 20], [5, 7, 3, 10])
calculateMax([5, 6, 7])
calculateMax([18, 19, 20], [5, 10, 74, 394])

It's important to consider browser compatibility when using these features:

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Spread_syntax

Answer 11

Answer №6

function GetMaxNumber(...numbers) {
  let flattenArray = numbers.flat();
  var maxNumber = flattenArray[0];

  for (let j = 0; j < flattenArray.length; j++) {
    if (maxNumber < flattenArray[j]) {
      maxNumber = flattenArray[j];
    }
  }
  // console.log(maxNumber);
  return maxNumber;
}

console.log(GetMaxNumber([5, 6, 7], [18, 19, 20], [5, 7, 3, 10]));
console.log(GetMaxNumber([5, 6, 7]));
console.log(GetMaxNumber([18, 19, 20], [5, 10, 74, 394]));

this code snippet provides the answer to your query. You can refer to the screenshots below for more clarity.

For the given input, I have attached visual aids to demonstrate how the function processes GetMaxNumber([5, 6, 7], [18, 19, 20], [5, 7, 3, 10])

it will analyze the entire

[![see image description here][1]][1]

https://i.sstatic.net/bI0jB.png

Answer 12

function GetMaxNumber(...numbers) {
  let flattenArray = numbers.flat();
  var maxNumber = flattenArray[0];

  for (let j = 0; j < flattenArray.length; j++) {
    if (maxNumber < flattenArray[j]) {
      maxNumber = flattenArray[j];
    }
  }
  // console.log(maxNumber);
  return maxNumber;
}

console.log(GetMaxNumber([5, 6, 7], [18, 19, 20], [5, 7, 3, 10]));
console.log(GetMaxNumber([5, 6, 7]));
console.log(GetMaxNumber([18, 19, 20], [5, 10, 74, 394]));

this code snippet provides the answer to your query. You can refer to the screenshots below for more clarity.

For the given input, I have attached visual aids to demonstrate how the function processes GetMaxNumber([5, 6, 7], [18, 19, 20], [5, 7, 3, 10])

it will analyze the entire

[![see image description here][1]][1]

https://i.sstatic.net/bI0jB.png

What is the best way to determine the maximum value from multiple arrays?

Answer №1

Answer №2

Answer №3

Answer №4

Answer №5

Answer №6

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