Finding the common elements in two arrays.
Here’s a Java program that finds the common elements in two arrays: import java.util.ArrayList; import java.util.HashSet; import java.util.List; import java.util.Set;…
Finding the difference of two arrays.
Here’s a Java program that finds the difference between two arrays: import java.util.ArrayList; import java.util.Arrays; import java.util.List; public class ArrayDifference…
Finding the union of two arrays.
Here’s an example of a Java program that finds the union of two arrays: import java.util.HashSet; public class ArrayUnion {…
Finding the intersection of two arrays.
Here’s a Java program that finds the intersection of two arrays: import java.util.*; public class ArrayIntersection { public static…
Merging two sorted arrays into a single sorted array.
Here’s an example of a Java program that merges two sorted arrays into a single sorted array: import java.util.Arrays; public…
Rotating an array by a given number of positions.
Here’s an example program in Java that rotates an array by a given number of positions: import java.util.Arrays; public class…
Reversing an array.
Here’s a Java program that reverses an array: import java.util.Arrays; public class ArrayReversal { public static void main(String[] args)…
Removing duplicates from an array.
Hint: Convert Array to Set Here’s a Java program that removes duplicates from an array: import java.util.Arrays; import java.util.HashSet; public…
Finding the frequency of each element in an array.
Hint: Suppose we have the following array of numbers: [2, 3, 4, 2, 5, 3, 4, 2, 3, 5, 5]….
Finding the variance of all elements in an array.
Here’s a Java program that calculates the variance of all elements in an array: import java.util.Scanner; public class VarianceCalculator {…
Finding the standard deviation of all elements in an array
Hint: double[] array = {2.5, 3.7, 4.1, 2.9, 5.2, 3.8}; sum = 0; mean = sum / array.length; squaredDiffSum +=…
Finding the range of all elements in an array
Hint: Find out max and min number first. Then range = max – min Here’s a Java program that finds…
Finding the mode of all elements in an array
Hint: Suppose we have the following array of numbers: [2, 3, 4, 2, 5, 3, 4, 2, 3, 5, 5]….
Finding the median of all elements in an array.
Hints: Middle element Here’s an example program in Java that finds the median of all elements in an array: import…
Finding the average of all elements in an array.
Here’s a Java program that calculates the average of all elements in an array: public class AverageCalculator { public…
Finding the sum of all elements in an array.
Here’s a simple Java program that calculates the sum of all elements in an array: public class ArraySum { …
Checking if an array is sorted in ascending or descending order.
Here’s an example of a Java program that checks if an array is sorted in ascending or descending order: public…
Sorting an array in ascending or descending order.
Here’s an example of a Java program that sorts an array in either ascending or descending order based on user…
Finding the kth smallest or kth largest element in an array.
Here’s an example of a Java program that finds the kth smallest element in an array using the QuickSelect algorithm:…
Finding the second largest or second smallest element in an array.
Here’s a Java program that finds the second largest and second smallest elements in an array: import java.util.Arrays; public class…