1) Write a Java program to reverse elements in a array list.
import java.util.ArrayList; import java.util.*; public class Main { public static void main(String[] args) { //create an array list of an integer number ArrayList<Integer> list = new ArrayList<Integer>(); //initialize the array list for(int i=1; i<=15; i++) { list.add(i); } //display the array list System.out.println("The original array list is: \n"+list); Collections.reverse(list); //display the array list System.out.println("\nThe reverse array list is: \n"+list); } }
Q1. CLO: (5 points) Write a java program that reads 10 words from the keyboard then place them in an array. Display the array elements in reverse order, and then count and print the number of times a word appears in that array. The user shall insert the word from the keyboard.
Write a java program to read from a file “input4_02.txt” an integer N (0? N ? 100) and then read N double numbers from this file to an array. Write to file “output4_02.txt” this array but in the reverse order and also the sum of all elements in the array. For example File: “input4_02.txt” 5 1.30 2.22 4.00 17.60 3.14 File “output4_02.txt” 3.14 17.60 4.00 2.22 1.30 Sum = 28.26
Write a Java program that will create an array of Strings with 25 elements. Input Strings from the user and store them in the array until either the user enters “quit” or the array is full. HINT: the sentinel value is “quit” all lowercase. “Quit” or “QUIT” should not stop the loop. HINT: you have to use the equals method (not ==) when you are comparing two Strings. After the input is complete, print the Strings that the user entered...
We use bluej for our JAVA program. If you can help id greatly appreciate it. Create a new Java program called Flip. Write code that creates and populates an array of size 25 with random numbers between 1-50. Print the array. Print array in reverse.
Java Program: Write an algorithm (steps) using pseudocode (no java code required) explaining steps for a method which will reverse an integer array (Integer[]) without using any other data structure. The method should return the reversed integer array. E.g. If input array Integer[] integers = [1,2,3,4,5,6] should return [6,5,4,3,2,1]
1. Write a java program to find the sum of the elements on the diagonal of a matrix. 2. Write a java program to add two matrices. 3. Write a java program to find a given value in a matrix. 4. Write a java program to multiply two matrices. 5. Write a java program to find the transpose of a matrix.
Write a Java program to remove the duplicate elements of a given array and return the new length of the array. Sample array: [20, 20, 32, 76, 30, 40, 50, 50, 52] After removing the duplicate elements the program should return 6 as the new length of the array. Out put Original array length: 9 Array elements are: 20 20 32 76 30 40 50 50 52 The new length of the array is: 7
Q1. Write a program in Java a. Create 2 separate arrays, of user defined values, of same size b. Add these 2 arrays. ........................................................................................................................... Q2. Write a program in java (using loop) input any10 numbers from user and store in an array. Check whether each of array element is positive, negative, zero, odd or even number. ............................................................................................................................ Q3. Write a program in Java to display first 10 natural numbers. Find the sum of only odd numbers. .............................................................................................................................. Q4....
Problem 1: Dynamic Grocery Array Using Java to write a program that prompts the user to enter an item’s name for each position in the array. The program then prints uses a loop to output the array. Example 1: Banana 2: Orange 3: Milk 4: Carrot 5: Chips Banana, Orange, Milk, Carrot, Chips Problem 2: Print Characters in String Array Declare a string array of size 5. Prompt the user enters five strings that are stored in the array....
Write a Java program that does the following. a. Declare an integer 2D array with 5 rows and 5 columns. b. Initialize the array's elements to random integers between 1 and 10 (inclusive). c. Display all the elements in the 2D array as a table of rows and columns. d. Display the row index and column index of all the even integers in the 2D array. e. Display the sum of first row's elements.