Java Program to Print the Smallest Element in an Array

27 Nov, 2020
Java provides a data structure, the array, which stores the collection of data of the same type. It is a fixed-size sequential collection of elements of the same type. 
Example:
arr1[] = {2 , -1 , 9 , 10}
output : -1

arr2[] = {0, -10, -13, 5}
output : -13
We need to find and print the smallest value element of an array in this program.
By maintaining a min element and updating it while traversing over the whole array if we encounter a number smaller than min.By sorting an array and printing the 0th index element of the array after sorting.
By maintaining a min element and updating it while traversing over the whole array if we encounter a number smaller than min.
By sorting an array and printing the 0th index element of the array after sorting.
Approach 1: Maintaining a min element and updating it while traversing over the whole array if we encounter a number smaller than min.
Java
// Java program to print the smallest element of the array  public class FindSmallestElementInArray {    public static void main(String[] args)    {          // Either we can initialize array elements or can        // get input from user. Always it is best to get        // input from user and form the array        int[] initializedArray            = new int[] { 25, 110, 74, 75, 5 };          System.out.println("Given array ");          for (int i = 0; i < initializedArray.length; i++) {              System.out.println(initializedArray[i]);        }          // Initialize minValue with first element of array.        int minValue = initializedArray[0];          // Loop through the array        for (int i = 0; i < initializedArray.length; i++) {              // Compare elements of array with minValue and            // if condition true, make minValue to that            // element              if (initializedArray[i] < minValue)                  minValue = initializedArray[i];        }          System.out.println(            "Smallest element present in given array: "            + minValue);    }}
Given array 
25
110
74
75
5
Smallest element present in given array: 5
Time Complexity: O(n) 
Space Complexity: O(1)
Approach 2: By sorting an array and printing the 0th index element of the array after sorting.
Java
// Java program to print the smallest element of the array  import java.util.*;  public class FindSmallestElementInArray {    public static void main(String[] args)    {                // we can initialize array elements        int[] initializedArray = new int[] { 25, 110, 74, 75, 5 };                System.out.println("Given array ");        for (int i = 0; i < initializedArray.length; i++) {                        System.out.println(initializedArray[i]);        }          // sort the array        Arrays.sort(initializedArray);                int minValue = initializedArray[0];                System.out.println(            "Smallest element present in given array: "            + minValue);    }}
Given array 
25
110
74
75
5
Smallest element present in given array: 5
Time complexity: O(NlogN) Since the time taken for sorting is NlogN, where there are N elements of the array
Space complexity: O(1)
.
Java-Array-Programs
Picked
Technical Scripter 2020
Java
Java Programs
Technical Scripter
Java
Writing code in comment?
Please use ide.geeksforgeeks.org,
generate link and share the link here.