A Collection is a group of individual objects represented as a single unit. Java provides Collection Framework which defines several classes and interfaces to represent a group of objects as a single unit.
Example:
Input : List = [3, 5, 18, 4, 6] Output: Min value of our list : 3 max value of our list : 18 Input : List = ['a', 'a', 'a'] Output: All elements are equal
Approach:
- Take inputs in the list.
- Create two variables, minimum and maximum.
- Use Collections.min() method and store the return value in min variable.
- Use Collections.max() method and store the return value in max variable.
- If the minimum and maximum variables are equal then print Equal elements.
- Else print minimum and maximum variables.
Below is the implementation of the above approach:
// Java Program to Compare Elements in a Collection
import java.io.*;
import java.util.*;
class GFG {
public static void main(String[] args)
{
// List initialization
List<Integer> l = new ArrayList<>();
// Add elements in the list
l.add(3);
l.add(5);
l.add(18);
l.add(4);
l.add(6);
// Minimum in the list
int minimum = Collections.min(l);
// Maximum in the list
int maximum = Collections.max(l);
if (minimum == maximum) {
System.out.println("All elements are equal");
}
else {
System.out.println("Min value of our list : "
+ minimum);
System.out.println("Max value of our list : "
+ maximum);
}
}
}
Output
Min value of our list : 3 Max value of our list : 18
Time Complexity: O(N), where N is the length of the list.