how to find minimum and maximum values in an array in java code example

Example 1: Java program to find maximum and minimum number without using array

// Java program to find maximum and minimum number without using array
import java.util.Scanner;
public class MaximumMinimumWithoutArray
{
   public static void main(String[] args)
   {
      Scanner sc = new Scanner(System.in);
      System.out.println("Please enter total number: ");
      int numbers = sc.nextInt();
      int maximum = Integer.MIN_VALUE;
      int minimum = Integer.MAX_VALUE;
      System.out.println("Please enter " + numbers + " numbers.");
      for(int a = 0; a < numbers; a++)
      {
         int current = sc.nextInt();
         if(current > maximum)
         {
            maximum = current;
         }
         if(current < minimum)
         {
            minimum = current;
         }
      }
      System.out.println("largest of " + numbers + " numbers is: " + maximum);
      System.out.println("smallest of " + numbers + " numbers is: " + minimum);
      sc.close();
   }
}

Example 2: find min in array java

private static int findMin(int[] array) {
		int min = array[0];
		for(int i=1;i array[i]) {
				min = array[i];
			}
		}
		return min;
	}

Example 3: how to get the max value of an array java

public static double arrayMax(double[] arr) {
    double max = Double.NEGATIVE_INFINITY;

    for(double cur: arr)
        max = Math.max(max, cur);

    return max;
}

Example 4: find the maximum number from an int Array

---without sort method---
public static int maxValue( int[]  n ) {

int max = Integer.MIN_VALUE;

for(int each: n)

if(each > max)

max = each;

 
return max;
  
---with sort method---
public static int maxValue( int[]  n ) {

Arrays.sort( n );

return  n [ n.lenth-1 ];

}

Example 5: how to get the max value of an array java

import java.util.Random;

public class Main {

public static void main(String[] args) {
   int a[] = new int [100];
   Random rnd = new Random ();

    for (int i = 0; i< a.length; i++) {
        a[i] = rnd.nextInt(99-0)+0;
        System.out.println(a[i]);
    }

    int max = 0;          

    for (int i = 0; i < a.length; i++) {
        a[i] = max;


        for (int j = i+1; j max) {
               max = a[j];
            }

        }
    }

    System.out.println("Max element: " + max);
}
}

Example 6: finding min and max from given number in java

Scanner input = new Scanner(System.in);
        // Minimum And Maximum 
        int count = 0;
        int min = 0;
        int max = 0;
        boolean bugSolved = true;
		/* or we can use :
        int min = Integer.MAX_VALUE;
        int max = Integer.MIN_VALUE;
        */
		
        while (true){
            int cnt = count++;
            System.out.print("Enter Number #"+(cnt+1)+": ");
            boolean isValid = input.hasNextInt();
            if(isValid){
               int num = input.nextInt();
               /* if (bugSolved){
                   bugSolved = false;
                   min = num;
                   max = num;
               }  # Just remove this condition and 
               	boolean (bugSolved) at the top, if you use 
               	int min = Integer.MAX_VALUE and int max = 
                Integer.MIN_VALUE */
                if (num < min) {
                    min = num;
                }else if (num > max){
                    max = num;
                }
            }else{
                System.out.println("Invalid input..");
                break;
            }
            input.nextLine();
        }
        System.out.println("Min Number : " + min);
        System.out.println("Max Number : " + max);