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Java Program to Get Minimum and Maximum From a List
In this article, we will understand how to get minimum and maximum from a list. A list is an ordered collection that allows us to store and access elements sequentially. It contains the index-based methods to insert, update, delete and search the elements. It can also have duplicate elements.
Below is a demonstration of the same −
Suppose our input is −
Input list: [500, 650, 300, 250, 110]
The desired output would be −
The minimum value of the list is: 110 The maximum value of the list is: 650
Algorithm
Step 1 - START Step 2 - Declare a list namely input_list. Step 3 - Define the values. Step 4 - Sort the list using the inbuilt function .sort(). Step 5 - Use the inbuilt function Integer.MAX_VALUE to fetch the max value of the list and Integer.MIN_VALUE to fetch the minimum value of the list. Step 6 - Display the result Step 7 - Stop
Example 1
Here, we bind all the operations together under the ‘main’ function.
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
public class Demo {
public static void main(String[] args) {
System.out.println("Required packages have been imported");
List<Integer> input_list = new ArrayList<>();
input_list.add(500);
input_list.add(650);
input_list.add(300);
input_list.add(250);
input_list.add(110);
System.out.println("The list is defined as " +input_list);
List<Integer> sortedlist = new ArrayList<>(input_list);
Collections.sort(sortedlist);
if (sortedlist == null || sortedlist.size() == 0) {
System.out.println("\nThe minimum value of the list is: " +Integer.MAX_VALUE);
}
System.out.println("\nThe minimum value of the list is: " +sortedlist.get(0));
if (sortedlist == null || sortedlist.size() == 0) {
System.out.println("The maximum value of the list is: " + Integer.MIN_VALUE);
return ;
}
int list_size = sortedlist.size() - 1;
System.out.println("The maximum value of the list is: " + sortedlist.get(list_size));
}
}Output
Required packages have been imported The list is defined as [500, 650, 300, 250, 110] The minimum value of the list is: 110 The maximum value of the list is: 650
Example 2
Here, we encapsulate the operations into functions exhibiting object-oriented programming.
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
public class Demo {
public static Integer get_min_value(List<Integer> sortedlist) {
if (sortedlist == null || sortedlist.size() == 0) {
return Integer.MAX_VALUE;
}
return sortedlist.get(0);
}
public static Integer get_max_value(List<Integer> sortedlist) {
if (sortedlist == null || sortedlist.size() == 0) {
return Integer.MIN_VALUE;
}
int list_size = sortedlist.size() - 1;
return sortedlist.get(list_size);
}
public static void main(String[] args) {
System.out.println("Required packages have been imported");
List<Integer> input_list = new ArrayList<>();
input_list.add(500);
input_list.add(650);
input_list.add(300);
input_list.add(250);
input_list.add(110);
System.out.println("The list is defined as " +input_list);
List<Integer> sortedlist = new ArrayList<>(input_list);
Collections.sort(sortedlist);
System.out.println("\nThe minimum value of the list is: " + get_min_value(sortedlist));
System.out.println("The maximum value of the list is: " + get_max_value(sortedlist));
}
}Output
Required packages have been imported The list is defined as [500, 650, 300, 250, 110] The minimum value of the list is: 110 The maximum value of the list is: 650
Updated on: 30-Mar-2022
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