For Loop Exercises, Practice, Solution
1
Create a script to construct the following pattern, using nested for loop.
* * * * * * * * * * * * * * *
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2
Create a script to construct the following pattern, using a nested for loop.
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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3
Write a PHP script that creates the following table using for loops. Add cellpadding="3px" and cellspacing="0px" to the table tag.
| 1 * 1 = 1 | 1 * 2 = 2 | 1 * 3 = 3 | 1 * 4 = 4 | 1 * 5 = 5 |
| 2 * 1 = 2 | 2 * 2 = 4 | 2 * 3 = 6 | 2 * 4 = 8 | 2 * 5 = 10 |
| 3 * 1 = 3 | 3 * 2 = 6 | 3 * 3 = 9 | 3 * 4 = 12 | 3 * 5 = 15 |
| 4 * 1 = 4 | 4 * 2 = 8 | 4 * 3 = 12 | 4 * 4 = 16 | 4 * 5 = 20 |
| 5 * 1 = 5 | 5 * 2 = 10 | 5 * 3 = 15 | 5 * 4 = 20 | 5 * 5 = 25 |
| 6 * 1 = 6 | 6 * 2 = 12 | 6 * 3 = 18 | 6 * 4 = 24 | 6 * 5 = 30 |
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4
(1) Create a script that displays 1-2-3-4-5-6-7-8-9-10 on one line. There will be no hyphen(-) at starting and ending position.
Sample Solution:
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5
Create a script that displays 1-2-3-4-5-6-7-8-9-10 on one line. There will be no hyphen(-) at starting and ending position.
1-2-3-4-5-6-7-8-9-10
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6
(2) Create a script to construct the following pattern, using nested for loop.
*
* *
* * *
* * * *
* * * * *
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7
Create a script using a for loop to add all the integers between 0 and 30 and display the sum.
The sum of the numbers 0 to 30 is 465
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8
(3) Write a PHP program to generate and display the first n lines of a Floyd triangle. (use n=5 and n=11 rows).
According to Wikipedia Floyd's triangle is a right-angled triangular array of natural numbers, used in computer science education. It is named after Robert Floyd. It is defined by filling the rows of the triangle with consecutive numbers, starting with a 1 in the top left corner:
Sample output for n = 5 :
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
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9
(4) Create a script to construct the following pattern, using a nested for loop.
*
* *
* * *
* * * *
* * * * *
* * * * *
* * * *
* * *
* *
*
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10
(5) Write a program to calculate and print the factorial of a number using a for loop. The factorial of a number is the product of all integers up to and including that number, so the factorial of 4 is 4*3*2*1= 24.
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11
(6) Write a PHP script that creates the following table using for loops. Add cellpadding="3px" and cellspacing="0px" to the table tag.
1 * 1 = 1 1 * 2 = 2 1 * 3 = 3 1 * 4 = 4 1 * 5 = 5
2 * 1 = 2 2 * 2 = 4 2 * 3 = 6 2 * 4 = 8 2 * 5 = 10
3 * 1 = 3 3 * 2 = 6 3 * 3 = 9 3 * 4 = 12 3 * 5 = 15
4 * 1 = 4 4 * 2 = 8 4 * 3 = 12 4 * 4 = 16 4 * 5 = 20
5 * 1 = 5 5 * 2 = 10 5 * 3 = 15 5 * 4 = 20 5 * 5 = 25
6 * 1 = 6 6 * 2 = 12 6 * 3 = 18 6 * 4 = 24 6 * 5 = 30
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12
(7) Write a PHP program to print alphabet pattern 'A'.
Expected Output:
***
* *
* *
*****
* *
* *
* *
* *
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13
(8) Write a PHP program to print alphabet pattern 'X'.
Expected Output:
* *
* *
* *
*
* *
* *
* *
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14
(9) Write a PHP program to print alphabet pattern 'R'.
Expected Output:
****
* *
* *
****
* *
* *
* *
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15
(10) Write a PHP script using nested for loop that creates a chess board as shown below.
Use table width="270px" and take 30px as cell height and width.
chess board(OutPut)
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