Find Largest and Smallest number in Array

Find minimum and maximum number in array

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Given a integer array, find minimum and maximum number in array.

Lets understand the problem statement graphically and it will be more clear,

Find minimum and maximum element in an array in Java

Algorithm

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There are many approach to solve this problem, Lets see one of the efficient way.

1. Take 2 variable "min" and "max" and initialize min to largest value and max to smallest value.
   int min = Integer.MAX_VALUE;
   int max = Integer.MIN_VALUE;
2. Iterate through array and
   if the current value is > max then update max with new maximum value.
   if the current value is < min then update min with new minimum value.
   

Java Program to find Minimum and Maximum number in array.

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package javabypatel;

public class FindLargestSmallestNumberArray {

 public static void main(String[] args) {
  int[] arr = new int[]{10,1,2,8,3,15,3};
  findLargestSmallestNumberArray(arr);
 }
 
 private static void findLargestSmallestNumberArray(int[] arr){
  if(arr==null || arr.length < 1){
   return;
  }
  int min = Integer.MAX_VALUE;
  int max = Integer.MIN_VALUE;
  
  for (int value : arr) {
   if(value < min){
    min = value;
   }
   if(value > max){
    max = value;
   }
  }
  System.out.println("Minimum element :"+min);
  System.out.println("Maximum element :"+max);
 }
}

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Enjoy !!!! 

If you find any issue in post or face any error while implementing, Please comment.