Java Programs

Question: The arrays list1 and list2 are identical if they have the same contents.Write a method that returns true if list1 and list2 are identical, Continue Reading

Question: The arrays list1 and list2 are strictly identical if their corresponding elements are equal.Write a method that returns true if list1 and list2 are Continue Reading

Question: Write a program that generates two sequences of random int values which are identical. Use the java.util.Random class. OutputSeries 1:87 92 74 24 6 Continue Reading

Question: Create two Point2D object for a point with the specified x- and y- coordinates, use the distance method to compute the distance between the Continue Reading

Question: Create a class TV which defines for its objecs: states (channelNumber, volume, and power on or off)and behaviors (change channels (channelUp(), channelDown(), setChannel()), adjust Continue Reading

Question: Create a class Circle that has a data field radius. If no radius is passed during instantiation then set the radius to 1. Write Continue Reading

Question: Write a program that prompts the user to enter 10 integers and displays all combinations of picking two numbers from the 10 numbers. Sample Continue Reading

Question: Write a method for solving a quadratic equation using the following header:public static int solveQuadratic(double[] eqn, double[] roots)The coefficients of a quadratic equation ax2+bx+c=0 Continue Reading

Question: Coupon collector is a classic statistics problem with many practical applications. The problem is to repeatedly pick objects from a set of objects and Continue Reading

Question: A school has 100 lockers and 100 students. All lockers are closed on the first day of school. As the studentsenter, the first student, Continue Reading

Question: Write a program that passes a string to the command line and displays the number of uppercase letters in the string. Input from Command Continue Reading

Question: Write a program that passes an unspecified number of integers from the command line and displays their total. Sample input/output: args: [“1”, “2”, “3”, Continue Reading

Question: The selection-sort method repeatedly finds the smallest number in the current array and swaps it with the first.Rewrite this program by finding the largest Continue Reading

Question: Write the following method that returns true if the list is already sorted in non-decreasing order:public static boolean isSorted(int[] list)Write a test program that Continue Reading

Question: Write a sort method that uses the bubble-sort algorithm.The bubble-sort algorithm makes several passes through the array. On each pass, successive neighboring pairs are Continue Reading

Question: Write a program that prompts the user to enter the number of students, the student’s names, and theirscores and prints student names in decreasing Continue Reading

Question: Write a program that randomly generates an array of 100,000 integers and a key.Estimate the execution time of invoking the linearSearch method.Sort the array Continue Reading

Question: Write a method that returns a new array by eliminating the duplicate valuesin the array using the following method header:public static int[] eliminateDuplicates(int[] list)Write Continue Reading

Question: Write a method that returns the gcd of an unspecified number of integers. The method header is specified as follows:public static int gcd(int… numbers)Write Continue Reading

Question: Write a method that returns a random number between 1 and 54, excluding the numbers passed in the argument.The method header is specified as Continue Reading

Question: Write a program to reverse the elements in an integer array without copying it into a new array.Write a test program that prompts the Continue Reading

Question: Write a program that takes 10 elements as input for a double array and calculates the mean andstandard deviation of the elements.Mean= (n1+n2+n3+…+nl)/lStandard deviation= Continue Reading

Question: Write a method that returns the index of the smallest element in an array of integers. If the number of such elements is greater Continue Reading

Question: Write a method that finds the smallest element in an array of double values using the following header:public static double min(double[] array)Write a test Continue Reading

Question: Write two overloaded methods that return the average of an array with the following headers:public static int average(int[] array)public static double average(double[] array)Write a Continue Reading

Question: Write a program that generates 10 random integers between 0 and 9 and displays the count for each number. Example:3 4 4 5 0 Continue Reading

Question: Write a program that gives the first 50 prime numbers using the following approach: Check whether any of the prime numbers less than or Continue Reading

Question: Write a program that reads in 10 numbers and displays the number of distinct numbers and the distinct numbers in their input order and Continue Reading

Question: Write a program that reads an unspecified number of scores and determines how many scores are above or equal to the average, and how Continue Reading

Question: Write a program that generates random integers between 1 and 100 and counts the occurrences of each.

Question: Write a program that reads 10 integers then displays them in the reverse of the order in which they were read. Example: Enter array Continue Reading

Question: Write a program that reads student scores, gets the best score, and then assigns grades based on the following scheme: The grade is A Continue Reading

Question: Write a program that takes three arguments (num1 operation num2) from the command line and displays the result of the expression

package Array; /** * Created by aarushi on 1/5/21. */ public class ArraySortSelction { /* Selection sort selects the smallest number in the array and Continue Reading

package Array; /** * Created by aarushi on 1/5/21. */ public class ArraySearchBinary { /*Step 1: The array must be sorted Step 2: Assign the Continue Reading

package Array; /** * Created by aarushi on 1/5/21. */ public class ArrayLinearSearch { public static boolean linearSerach (int [] array, int key){ //In Linear Continue Reading

Question: Generate 10 random characters and store them in an array. Count and display the occurrence of each letter in the character array Example: Output Continue Reading

Question: Write a program to reverse an array Example: original array: {1,2,3,4,5} Output:5,4,3,2,1

Question: Use arraycopy method to contents of one array to another

Question: Write a program that will pick four random cards from a deck of cards Examples: Output 1: 9 of Hearts6 of Spade4 of Diamond2 Continue Reading

Question: Write a program that finds the average of contents in an array and counts the number of elements greater than the average

Q) Randomly shuffle the elements of an array Example Original Array: 2,5,1,7,8,2 Output 1:5 2 8 1 2 7 Output 2:5 1 8 2 2 Continue Reading

Q) Obtain the English name of a given month by its number Example: Input:Enter month number: 4 Output:April

Q) Shift elements of an array to the right Example: Array:1,2,3,4,5 Output:5 1 2 3 4

Q) Shifting elements of an array to the left Example: Array: 1,2,3,4,5 Output:2 3 4 5 1

Q) Find the lowest index of the largest element in an array Example: Array: 1,5,2,3,5,5 Output: Lowest Index of max element= 2

Q) Find the largest element in an array Example: Array: 33 93 29 40 36 81 46 14 60 24 Output:Max Element= 93

Q) Find the sum of all elements in an array Example: Array: 27 26 11 41 53 18 90 82 79 46 Output: Sum= 473

Q) Display the contents of an array

Q) Initialize an array with random values between 1 and 100 Example: First time running the program: 94 74 73 76 50 70 88 55 Continue Reading

Q) Initialize an array with input values from the user Example: Enter 10 elements of the array:1 2 3 4 5 6 7 8 9 Continue Reading