# How do you find the max value in an ArrayList?

## How do you find the max value in an ArrayList?

Finding the max value from ArrayList from Collection API is done by running a loop over all the elements or can be found max value with the Collections. max() method. Collections. max(): Returns the maximum element of the given collection, according to the natural ordering of its elements.

**How do you find the max value in an array in Java?**

Using Arrays. sort method to Find Maximum and Minimum Values in an Array

- int[] nums={6,-1,-2,-3,0,1,2,3,4};
- Arrays. sort(nums);
- System. out. println(“Minimum = ” + nums[0]);
- System. out. println(“Maximum = ” + nums[nums. length-1]);

### How do you find the max of a list in Java?

Example 2

- import java.util.*;
- public class CollectionsMaxExample2 {
- public static void main(String[] args) {
- //Create collections lists.
- List list = Arrays.asList(20, 10, 100, 140, 250);
- Integer max = Collections.max(list);
- System.out.println(“Maximum element is: “+max);
- }

**How do you find the max and min of an ArrayList in Java?**

Then the length of the ArrayList can be found by using the size() function. After that, the first element of the ArrayList will be store in the variable min and max. Then the for loop is used to iterate through the ArrayList elements one by one in order to find the minimum and maximum from the array list.

## How do you find the largest and smallest number in an array in Java?

Algorithm to find the smallest and largest numbers in an array

- Input the array elements.
- Initialize small = large = arr[0]
- Repeat from i = 2 to n.
- if(arr[i] > large)
- large = arr[i]
- if(arr[i] < small)
- small = arr[i]
- Print small and large.

**How do you use toArray?**

The following example shows the usage of java. util. Arraylist. toArray(T[] a)() method method….Parameters:

Name | Description |
---|---|

a | The array into which the elements of the list are to be stored, if it is big enough; otherwise, a new array of the same runtime type is allocated for this purpose. |

### How do you get the highest number that exists on a list in Java 8?

max() method. The idea is to convert the list into a Stream and call Stream#max() that accepts a Comparator to compare items in the stream against each other to find the maximum element, and returns an Optional containing the maximum element in the stream according to the provided Comparator .

**How do you find the maximum and minimum value of an array in Java 8?**

With the introduction of Stream with Java 8, we can convert the array into the corresponding type stream using the Arrays. stream() method. Then we can call the max() and min() method, which returns the maximum and minimum element of this stream as OptionalInt .