Java | JSP | JSF Answers

Place Values (JAVA)

by CodeChum Admin

Manipulating values from a series of numbers is fun, but let's try exploring the use of loops a little more.

How about printing out each digit of a number starting from its rightmost digit, going to its leftmost digit?

Instructions:

1. Input a non-zero positive integer.
2. Using while loop, print out each digit of the inputted integer in separate lines, starting from its rightmost digit until the leftmost digit of the number.
3. Tip #1: Use % 10 to get the rightmost digit. For example, if you do 412 % 10, then the result would be the rightmost digit, which is 2.
4. Tip #2: On the other hand, use / 10 to remove the rightmost digit. For example, if you do 412 / 10, then the result would be 41.
5. Tip #3: You'd have to repeat Tip #1 and Tip #2 inside the while() loop for this problem while the inputted integer is not yet 0.

Input

A line containing an integer.

214

Output

Multiple lines containing an integer.

4
1
2

Against All "Odds"

Instructions:

1. Input a positive integer. This will serve as the starting point of the loop.
2. Using a while() loop, print out all the odd numbers starting from the inputted integer, until 0. The outputted numbers must all be separated by line.
3. Also remember that since the loop goes to descending order, a decrement variable shall be created and decreased per iteration for the loop to terminate when it reaches 0.

Instructions

1. Scan an integer that will accept an integer greater than 0 and store it in a variable.
2. Using a while() loop, print out all the odd numbers starting from the inputted integer, until 0. The outputted numbers must all be separated by line, just like that of the sample output.
3. Also remember that since the loop goes to descending order, a decrement variable shall be created and decreased per iteration for the loop to terminate when it reaches 0.

Input

A line containing an integer.

10

Output

Multiple lines containing an integer.

9
7
5
3
1

Create a program using a console application name "DragonKiller". The program should ask the user to enter his/her name and surname. Create a method name RemoveSpace() to remove space between the name and the surname entered by the user. Count the number of characters within the newly created string (nameSurname). The total number of characters (Name and Surname) should be used as the size of your arrayDragon (type integer). Populate your arrayDragon with a series of odd random numbers between 10 and 50. Display all arrayDragon elements and their corresponding indexes before executing. The insertionSort method allows the user to enter a value from the arrayDragon element to search for and be removed (Killed). • Loop through the array until you find the value (Use the binarySearch to locate the value with in your array) and kill that value from the arrayDragon. By replacing the value findDragon with a Zero (0) • Print out arrayDragon with the killed element.

Write a program that declares and initializes an array of 7 integers. The program uses these static methods to perform different operations on the array:

void printArray(int[] arr) – takes the array as parameter and prints the array in horizontal order

int sumOfArray(int[] arr) – takes the array as parameter and returns the sum of the array

int getHighest(int[] arr) – takes the array as parameter and returns the highest value in the array

int resetArray(int[] arr) – takes the array as parameter and resets the value of each element to 0

Sample output:

Here’s the array: 

3 1 3 2 1 9 1

Sum: 20

Highest: 9

Here’s the array: 

0 0 0 0 0 0 0