Programming & Computer Science Answers

Matrix Rotations

You are given a square matrix A of dimensions NxN. You need to apply the below given 3 operations on the matrix A.

Rotation: It is represented as R S where S is an integer in {90, 180, 270, 360, 450, ...} which denotes the number of degrees to rotate. You need to rotate the matrix A by angle S in the clockwise direction. The angle of rotation(S) will always be in multiples of 90 degrees.

Update: It is represented as U X Y Z. In initial matrix A (as given in input), you need to update the element at row index X and column index Y with value Z.

After the update, all the previous rotation operations have to be applied to the updated initial matrix.

Querying: It is represented as Q K L. You need to print the value at row index K and column index L of the matrix A.

Input

The first line contains a single integer N.

Next N lines contain N space-separated integers Aij (i - index of the row, j - index of the column).

Next lines contain various operations on the array. Each operation on each line (Beginning either with R, U or Q).

-1 will represent the end of input.

Output

For each Query operation print the element present at row index K and column index L of the matrix in its current state.

The formula for normalizing data-in a vector x-into the range [0,1] is given by

Z1=(x1-min(x))/(max(x)-min(x))

implement the formula above in a function

Right Triangle
Given a number N, write a program to print a triangular pattern of N lines with numbers as shown below.
Input

The input will be a single line containing a positive integer (N).
Output

The output should be N rows with numbers.
Note: There is no space between the numbers.
Explanation

For example, if the given number of rows is 4,
your code should print the following pattern
1
121
12321
1234321

Sample Input 1
4
Sample Output 1
1
121
12321
1234321

Sample Input 2
9
Sample Output 2
1
121
12321
1234321
123454321
12345654321
1234567654321
123456787654321
12345678987654321

Split and Replace

Given three strings

inputString, separator and replaceString as inputs. Write a JS program to split the

inputString with the given separator and replace strings in the resultant array with the replaceString whose length is greater than 7.

• You can use the string method split()
• You can use the array method map()

input:

Javascript-is-amazing

-

programming

output:

programming is amazing

input:

the&lion&king

&

tiger

output:

the lion king

Create a program the user will input 5 grades (choose any subjects and input any grades). Determine individual subjects either passed or failed. Lastly, calculate the average grade and determine whether if passed or failed.

Sample output:

Student Name: Victoria Jimenez

Filipino: 80 - Passed

Math: 74 - Failed

Science: 89 - Passed

English: 74 - Failed

PE: 90 - Passed

Hi Victoria Jimenez, Your Average Grade is 81.4 and you are PASSED!

*If the grade is failed the output should be

Hi Victoria Jimenez, Your Average Grade is 74.3 and you are FAILED!

Given a sentence S, write a program to print the frequency of each word in S. The output order should correspond with the word's input order of appearance.
Input

The input will be a single line containing a sentence S.
Output

The output contains multiple lines, with each line containing a word and its count separated by ": " with the order of appearance in the given sentence.
Explanation

For example, if the given sentence is "Hello world, welcome to python world", the output should be 
Hello: 1
world: 2
welcome: 1
to: 1
python: 1
Sample Input 1
Hello world welcome to python world
Sample Output 1
Hello: 1
world: 2
welcome: 1
to: 1
python: 1

Sample Input 2
This is my book
Sample Output 2
This: 1
is: 1
my: 1
book: 1

In this assignment, let's build a Book Search page by applying the concepts we learned till now.

Refer to the below image.

Instructions:

• Add HTML input element with id searchInput inside an HTML container element
• Add HTML select element with id selectDisplayCount inside an HTML container element
• Add HTML container element with id searchResults

By following the above instructions, achieve the given functionality.

• When a value is entered in the HTML input element with id searchInput and press on Enter key
• Get title, imageLink, author (HTTP response with key search_results) by making HTTP request using fetch with URL https://apis.ccbp.in/book-store?title=kalam&maxResults=30
• Set imageLink in the HTML img element and set author in the HTML paragraph element
• When a value is entered in the HTML input element with id searchInput and an option is selected in the drop down
• Make a HTTP GET request to fetch the books based on the title entered and maximum number of results
• If search results not equal to zero, then append the search results to the HTML container element with id searchResults
• If search results equal to zero, then display "No results found"
• Add loading status with Bootstrap component spinner while making an HTTP request

Resources

Use this Background image:

https://assets.ccbp.in/frontend/dynamic-webapps/book-search-bg.png

CSS Colors used:

Text colors Hex code values used:

#323f4b

#ffffff

CSS Font families used:

• Roboto

Write a program using two-dimensional array that searches a number and display the number of time it appears on the list of 10 input values.

Bookmark Maker

In this assignment, let's build a Bookmark Maker by applying the concepts we learned till now.

Refer to the below image.

Instructions:

• The page should have HTML form element with id bookmarkForm
• The HTML form element with id bookmarkForm should have HTML input elements with ids siteNameInput and siteUrlInput
• The HTML form element with id bookmarkForm should have HTML button element with id submitBtn
• Add HTML label elements for HTML input elements with ids siteNameInput and siteUrlInput
• The HTML form element with id bookmarkForm should have HTML p elements with ids siteNameErrMsg and siteUrlErrMsg
• The page should have HTML unordered list element with id bookmarksList
• Each bookmark item should contain a HTML anchor element to navigate to the bookmarked site

Warning

• Please provide valid URL's to the siteUrlInput element

By following the above instructions, achieve the given functionality.

• When the HTML button element with the id submitBtn is clicked,
• If the values are entered in the HTML input elements with ids siteNameInput and siteUrlInput
• A new bookmark should be added to the bookmarksList as list item.
• If the siteNameInput value is empty,
• The HTML p element with id siteNameErrMsg should have error message
• If the siteUrlInput value is empty,
• The HTML p element with id siteUrlErrMsg should have error message
• When the visit button of a bookmark is clicked the site URL should open in a new tab.
• When the HTML input element with id siteNameInput is empty after changing the value inside the input
• The HTML p element with id siteNameErrMsg should have error message
• When the HTML input element with id siteUrlInput is empty after changing the value inside the input
• The HTML p element with id siteUrlErrMsg should have error message

Resources

CSS Colors used:

Background colors Hex code values used:

#2d3a8c

#ffffff

#f5f7fa

#21396c

Text colors Hex code values used:

#323f4b

#ffffff

#7b8794

#dc3545

Border Colors Hex code values used:

#cbd2d9

#e4e7eb

CSS Font families used:

• Roboto

3.25.1: LAB: Exact change c++ Write a program with total change amount as an integer input, and output the change using the fewest coins, one coin type per line. The coin types are Dollars, Quarters, Dimes, Nickels, and Pennies. Use singular and plural coin names as appropriate, like 1 Penny vs. 2 Pennies.