## Monday, May 2, 2022

### Question 10 : Write java Program to Find Smallest and Largest Element in an Array

You are given an integer array containing 1 to n but one of the numbers from 1 to n in the array is missing. You need to provide an optimum solution to find the missing number.

The number can not be repeated in the array.
For example
:
``````int[] arr1={7,5,6,1,4,2};
Missing numner : 3

int[] arr2={5,3,1,2};
Missing numner : 4``````

### Problem:

You are given an array of numbers. You need to find smallest and largest numbers in the array.

### Solution:

• Initialize two variables largest and smallest with arr
• Iterate over array
• If the current element is greater than the largest, then assign the current element to the largest.
• If the current element is smaller than the smallest, then assign the current element to the smallest.
• You will get the smallest and largest element in the end.

#### Java code to find the Smallest and Largest Element in an Array ::

``````/*
Java program to Find Largest and Smallest Number in an Array
*/
public class FindLargestSmallestNumberMain {

public static void main(String[] args) {

//array of 10 numbers
int arr[] = new int[]{12,56,76,89,100,343,21,234};

//assign first element of an array to largest and smallest
int smallest = arr;
int largest = arr;

for(int i=1; i< arr.length; i++)
{
if(arr[i] > largest)
largest = arr[i];
else if (arr[i] < smallest)
smallest = arr[i];

}
System.out.println("Smallest Number is : " + smallest);
System.out.println("Largest Number is : " + largest);
}
}
``````

When you run the above program, you will get the below output:
:
``````Largest Number is : 343
Smallest Number is : 12``````