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CSE110- Lab 8 Solved
• You are not allowed to use any array or String
• One only line where the word “String” may appear is in public static void main(String [] args) {
• The word “char” must not be anywhere in your solution
Overall hint: Imagine all outputs as a matrix of space and star. Then count spaces and stars to find out the trend of increment or decrement of number of stars/spaces. Utilize several IF statement to control when ‘star’ will be printed, when ‘space’ will be printed and when ‘enter’ will be printed.
PROBLEM 1) Number Line Sample input:
6
Sample output
123456
PROBLEM 2) Star Line
Print as many stars as given in input Sample input:
6
Sample output
******
PROBLEM 3) Rectangle Sample input:
4
6
Sample output
******
******
******
******
Hint: 4 and 6 means 4 lines of stars having 6 stars in each line.
PROBLEM 4) Rectangle Sample input:
4
6
Sample output
123456
123456
123456
123456
Hint: 4 and 6 means 4 lines of numbers having 1..6 in each line.
5) Triangle - Left Justified Draw right angled triangle of given height Sample input:
4
Sample output
*
**
*** ****
Hint: One loop for lines, another loop for printing i number of starts when it is line i.
PROBLEM 6) Triangle - Left Justified Draw right angled triangle of given height Sample input:
4
Sample output
1
12
123
1234
PROBLEM 7) Triangle - Right Justified Draw right angled triangle of given height Sample input:
4
Sample output
*
**
***
****
Hint: Count and print appropriate number of spaces in front of stars. Notice that there is one less space and one more star in each line.
PROBLEM 8) Triangle - Right Justified Draw right angled triangle of given height Sample input:
4
Sample output
1
12
123
1234
9) Triangle - Isosceles Draw triangle of given height Sample input 1:
3
Sample output 1:
*
***
*****
Sample input 2:
4
Sample output 2:
*
***
*****
*******
PROBLEM 10) Triangle - Isosceles Draw triangle of given height Sample input 1:
3
Sample output 1:
1
123
12345
Sample input 2:
4
Sample output 2:
1
123
12345
1234567
PROBLEM 11) Triangle - Right Justified Draw right angled triangle of given height Sample input: 4
Sample output
4
34
234
1234
12) Rhombus
Just draw the image of the above triangle once. And then, the opposite, once. Sample input:
3
Sample output
*
***
*****
***
*
PROBLEM 13) Rhombus
Just draw the image of the above triangle once. And then, the opposite, once. Sample input:
3
Sample output
1
123
12345
123
1
PROBLEM 14) Hollow Rectangle
Display a rectangle of given length and width.
Sample input:
4
5
Sample output
*****
* *
* *
*****
Hint 1: Print the character space (‘ ‘) in the middle.
Hint 2: You can re-use your solution to PROBLEM 2 and use if condition to selectively print first and last star of each line and all stars of first and last line.
PROBLEM 15) Hollow Rectangle
Display a rectangle of given length and width.
Sample input:
4
5
Sample output
12345
1 5
1 5
12345
16) Triangle - Left Justified Draw right angled triangle of given height Sample input: 5
Sample output
* **
* *
* *
*****
PROBLEM 17) Hollow Triangle - Left Justified Draw right angled triangle of given height Sample input: 5
Sample output
1 12
1 3
1 4
12345
PROBLEM 18) Hollow Triangle Draw right angled triangle of given height Sample input: 5
Sample output
*
**
* *
* *
*****
PROBLEM 19) Hollow Triangle - Right Justified Draw right angled triangle of given height Sample input: 5
Sample output
5
45
3 5
2 5
12345
20) Triangle
Draw triangle of given height Sample input 1:
3
Sample output 1:
*
* *
*****
Sample input 2:
4
Sample output 2:
*
* *
* *
*******
PROBLEM 21) Hollow Triangle – Isosceles Draw triangle of given height Sample input 1:
3
Sample output 1:
1
1 3
12345
Sample input 2:
4
Sample output 2:
1
1 3
1 5
1234567
PROBLEM 22) Hollow Rhombus
Just draw the image of the above triangle once. And then, the opposite, once. Sample input: 3
Sample output
*
* *
* *
* *
*
23) Rhombus
Just draw the image of the above triangle once. And then, the opposite, once. Sample input: 3
Sample output
1
1 3
1 5
1 3
1
PROBLEM 24) Palindrome Sample input: 5
Sample output
123454321
PROBLEM 25) Palindromic Triangle Sample input: 5
Sample output
1
121
12321
1234321
123454321
• You are not allowed to use any array or String
• One only line where the word “String” may appear is in public static void main(String [] args) {
• The word “char” must not be anywhere in your solution
Overall hint: Imagine all outputs as a matrix of space and star. Then count spaces and stars to find out the trend of increment or decrement of number of stars/spaces. Utilize several IF statement to control when ‘star’ will be printed, when ‘space’ will be printed and when ‘enter’ will be printed.
PROBLEM 1) Number Line Sample input:
6
Sample output
123456
PROBLEM 2) Star Line
Print as many stars as given in input Sample input:
6
Sample output
******
PROBLEM 3) Rectangle Sample input:
4
6
Sample output
******
******
******
******
Hint: 4 and 6 means 4 lines of stars having 6 stars in each line.
PROBLEM 4) Rectangle Sample input:
4
6
Sample output
123456
123456
123456
123456
Hint: 4 and 6 means 4 lines of numbers having 1..6 in each line.
5) Triangle - Left Justified Draw right angled triangle of given height Sample input:
4
Sample output
*
**
*** ****
Hint: One loop for lines, another loop for printing i number of starts when it is line i.
PROBLEM 6) Triangle - Left Justified Draw right angled triangle of given height Sample input:
4
Sample output
1
12
123
1234
PROBLEM 7) Triangle - Right Justified Draw right angled triangle of given height Sample input:
4
Sample output
*
**
***
****
Hint: Count and print appropriate number of spaces in front of stars. Notice that there is one less space and one more star in each line.
PROBLEM 8) Triangle - Right Justified Draw right angled triangle of given height Sample input:
4
Sample output
1
12
123
1234
9) Triangle - Isosceles Draw triangle of given height Sample input 1:
3
Sample output 1:
*
***
*****
Sample input 2:
4
Sample output 2:
*
***
*****
*******
PROBLEM 10) Triangle - Isosceles Draw triangle of given height Sample input 1:
3
Sample output 1:
1
123
12345
Sample input 2:
4
Sample output 2:
1
123
12345
1234567
PROBLEM 11) Triangle - Right Justified Draw right angled triangle of given height Sample input: 4
Sample output
4
34
234
1234
12) Rhombus
Just draw the image of the above triangle once. And then, the opposite, once. Sample input:
3
Sample output
*
***
*****
***
*
PROBLEM 13) Rhombus
Just draw the image of the above triangle once. And then, the opposite, once. Sample input:
3
Sample output
1
123
12345
123
1
PROBLEM 14) Hollow Rectangle
Display a rectangle of given length and width.
Sample input:
4
5
Sample output
*****
* *
* *
*****
Hint 1: Print the character space (‘ ‘) in the middle.
Hint 2: You can re-use your solution to PROBLEM 2 and use if condition to selectively print first and last star of each line and all stars of first and last line.
PROBLEM 15) Hollow Rectangle
Display a rectangle of given length and width.
Sample input:
4
5
Sample output
12345
1 5
1 5
12345
16) Triangle - Left Justified Draw right angled triangle of given height Sample input: 5
Sample output
* **
* *
* *
*****
PROBLEM 17) Hollow Triangle - Left Justified Draw right angled triangle of given height Sample input: 5
Sample output
1 12
1 3
1 4
12345
PROBLEM 18) Hollow Triangle Draw right angled triangle of given height Sample input: 5
Sample output
*
**
* *
* *
*****
PROBLEM 19) Hollow Triangle - Right Justified Draw right angled triangle of given height Sample input: 5
Sample output
5
45
3 5
2 5
12345
20) Triangle
Draw triangle of given height Sample input 1:
3
Sample output 1:
*
* *
*****
Sample input 2:
4
Sample output 2:
*
* *
* *
*******
PROBLEM 21) Hollow Triangle – Isosceles Draw triangle of given height Sample input 1:
3
Sample output 1:
1
1 3
12345
Sample input 2:
4
Sample output 2:
1
1 3
1 5
1234567
PROBLEM 22) Hollow Rhombus
Just draw the image of the above triangle once. And then, the opposite, once. Sample input: 3
Sample output
*
* *
* *
* *
*
23) Rhombus
Just draw the image of the above triangle once. And then, the opposite, once. Sample input: 3
Sample output
1
1 3
1 5
1 3
1
PROBLEM 24) Palindrome Sample input: 5
Sample output
123454321
PROBLEM 25) Palindromic Triangle Sample input: 5
Sample output
1
121
12321
1234321
123454321
