Question

For this assignment, you will apply what you learned in analyzing for, while, and do-while loops by writing these statements yourself. The Java™ program you write should do the following:

• Display a pyramid of asterisks onscreen (i.e., a nested for loop)
• Display the integers 10 to 1 in decreasing order, one number per line (i.e., a while/do-whlie loop)
• Add 7 until the sum becomes greater than 157, at which point the program should display both the sum and the number of 7s added

Complete this assignment by doing the following:

1. Download and unzip the linked Week 3 Coding Assignment Zip File.
2. Add comments to the code by typing your name and the date in the multi-line comment header.
3. Replace the following lines with Java™ code as directed in the file:

• LINE 1
• LINE 2
• LINE 3

1. Comment each line of code you add to explain what you intend the code to do and why you chose each type of loop.
2. Test and modify your Java™ program until it runs without errors and produces the results as described above.

Note: Refer to this week's analyzing code assignment if you need help.

/**************************************************************************************
* Program: PRG/420 Week 3
* Purpose: Week 3 Coding Assignment
* Programmer: TYPE YOUR NAME HERE
* Class: PRG/420
* Creation Date: TYPE TODAY'S DATE HERE
******************************************************************************************
* Program Summary: For, while, and do-while loops; nested loops
*
* For this assignment, you will add code to create:
*
* a for loop nested inside another for loop
* a while loop
* a do-while loop

*****************************************************************************************/

package prg420week3_codingassignment;

public class PRG420Week3_CodingAssignment {

public static void main(String[] args) {

// The following code should print asterisks: 1 on line 1, 2 asterists on line 2,
// 3 on line 3, 4 on line 4... for as many lines as the variable linesOfAsterisks.
// To do this, we can use 2 nested for loops. The first for loop is coded for you.
// You will need to add another for lop, NESTED INSIDE the first, that prints
// a certain # of asterisks based on the # of times the loop code has been executed.
// The result should look like this:
// *
// **
// ***
// ****
// *****
// etc.
int linesOfAsterisks = 5;
for (int i = 1; i <= linesOfAsterisks; i++) { // for each line...

// LINE 1. ADD A NESTED FOR LOOP THAT DISPLAYS ONE ASTERISK ON LINE 1, TWO ASTERISKS ON LINE 2, 3 ASTERISKS ON LINE 3, ETC.

System.out.println();
}

//////////////////////////////////////////////////////////////////////
// Add a while or do-while loop that displays the numbers from 10 to 1 in that order, like so:
// 10
// 9
// 8
// 7
// ...
// 1
//////////////////////////////////////////////////////////////////////

int num=10;

//LINE 2. ADD A LOOP THAT DISPLAYS NUMBERS 10 TO 1 IN DECREASING ORDER (HINT: DECREMENT OPERATOR)

///////////////////////////////////////////////////////////////////////
// Write a loop that adds 7s one at a time until the sum becomes > 157.
// Then print out both the sum and the number of 7s that were aded.
// Write a while or do-while loop, whichever you think is most appropriate.
//////////////////////////////////////////////////////////////////////////

int sum = 0;
int numberOfSevens = 0;

//LINE 3. ADD ANOTHER LOOP THAT ADDS 7s UNTIL SUM > 157. THEN DISPLAY SUM AND NUMBER OF SEVENS ADDED.

}

Answer 1

package prg420week3_codingassignment;

public class PRG420Week3_CodingAssignment {

public static void main(String[] args) {

// The following code should print asterisks: 1 on line 1, 2 asterists on line 2,
// 3 on line 3, 4 on line 4... for as many lines as the variable linesOfAsterisks.
// To do this, we can use 2 nested for loops. The first for loop is coded for you.
// You will need to add another for lop, NESTED INSIDE the first, that prints
// a certain # of asterisks based on the # of times the loop code has been executed.
// The result should look like this:
// *
// **
// ***
// ****
// *****
// etc.
int linesOfAsterisks = 5;
for (int i = 1; i <= linesOfAsterisks; i++) { // for each line...

// LINE 1. ADD A NESTED FOR LOOP THAT DISPLAYS ONE ASTERISK ON LINE 1, TWO ASTERISKS ON LINE 2, 3 ASTERISKS ON LINE 3, ETC.
for (int j = 0; j < i; j++) {// run until * = row number
System.out.print("*"); // print
}
System.out.println();// break line
}

//////////////////////////////////////////////////////////////////////
// Add a while or do-while loop that displays the numbers from 10 to 1 in that order, like so:
// 10
// 9
// 8
// 7
// ...
// 1
//////////////////////////////////////////////////////////////////////

int num=10;

//LINE 2. ADD A LOOP THAT DISPLAYS NUMBERS 10 TO 1 IN DECREASING ORDER (HINT: DECREMENT //OPERATOR)
while(num!=0){ //run till num not become 0
System.out.println(num--);// print num
}
///////////////////////////////////////////////////////////////////////
// Write a loop that adds 7s one at a time until the sum becomes > 157.
// Then print out both the sum and the number of 7s that were aded.
// Write a while or do-while loop, whichever you think is most appropriate.
//////////////////////////////////////////////////////////////////////////

int sum = 0;
int numberOfSevens = 0;

//LINE 3. ADD ANOTHER LOOP THAT ADDS 7s UNTIL SUM > 157. THEN DISPLAY SUM AND NUMBER OF SEVENS //ADDED.
while(sum < 157){ // rum until sum > 157
System.out.println("Sum: "+sum+" Number of Sevens: "+numberOfSevens);//print
sum+=7; // add 7 to 7 each time
numberOfSevens++; // count
}
}
}

/* PLEASE UPVOTE */

/* OUTPUT */

run:
*
**
***
****
*****
10
9
8
7
6
5
4
3
2
1
Sum: 0 Number of Sevens: 0
Sum: 7 Number of Sevens: 1
Sum: 14 Number of Sevens: 2
Sum: 21 Number of Sevens: 3
Sum: 28 Number of Sevens: 4
Sum: 35 Number of Sevens: 5
Sum: 42 Number of Sevens: 6
Sum: 49 Number of Sevens: 7
Sum: 56 Number of Sevens: 8
Sum: 63 Number of Sevens: 9
Sum: 70 Number of Sevens: 10
Sum: 77 Number of Sevens: 11
Sum: 84 Number of Sevens: 12
Sum: 91 Number of Sevens: 13
Sum: 98 Number of Sevens: 14
Sum: 105 Number of Sevens: 15
Sum: 112 Number of Sevens: 16
Sum: 119 Number of Sevens: 17
Sum: 126 Number of Sevens: 18
Sum: 133 Number of Sevens: 19
Sum: 140 Number of Sevens: 20
Sum: 147 Number of Sevens: 21
Sum: 154 Number of Sevens: 22
BUILD SUCCESSFUL (total time: 0 seconds)