answer:To rotate a 4x4 matrix 90 degrees clockwise in Python with the smallest possible space complexity, you can consider the following properties of the matrix: - The rows become columns in the rotated matrix. - The order of the rows in the original matrix is reversed in the rotated matrix. Based on these properties, you can develop a systematic approach for implementing the rotation: 1. Reverse the order of the rows in the original matrix. 2. Transpose the matrix (i.e., swap the rows and columns). Here's a Python function that implements this approach: ``` def rotate_matrix(matrix): # Reverse the order of the rows matrix.reverse() # Transpose the matrix for i in range(len(matrix)): for j in range(i): matrix[i][j], matrix[j][i] = matrix[j][i], matrix[i][j] return matrix ``` You can use this function to rotate the matrix as follows: ``` matrix = [ [1, 2, 3, 4], [5, 6, 7, 8], [9, 10, 11, 12], [13, 14, 15, 16] ] rotated_matrix = rotate_matrix(matrix) print(rotated_matrix) ``` This will output the following rotated matrix: ``` [ [13, 9, 5, 1], [14, 10, 6, 2], [15, 11, 7, 3], [16, 12, 8, 4] ] ```

answer:Based on the information provided, the correct term for the relationship between a librarian and a reader is "bibliotherapist." Just as a pharmacist applies their knowledge to help a patient select the appropriate medication for their specific health issues, a bibliotherapist uses their expertise to assist a reader in finding books that are relevant to their particular interests and needs. In both cases, the professional provides guidance and support to help the individual achieve their desired outcome.

answer:To start, we can create a template for each profile that includes the individual's name, contribution to history, notable achievements, and a video. We can also include a section for users to add tributes or messages, which will be encrypted using the unique key for that profile. To generate the key, we can use a combination of the individual's birthdate, location of birth, and significant life events. For example, we could take the year of birth, the latitude and longitude of the birthplace, and the date of a significant achievement or event in their life, and combine them in a specific order to create a string of characters that will act as the key for encryption. To make the puzzle more challenging, we can use a different algorithm for each individual, based on their unique information. Users will need to carefully analyze each profile to identify the specific algorithm used to generate the key. They'll need to understand the significance of each piece of information and how it relates to the encryption process. Once users have identified the correct algorithm, they can apply it to the encrypted message to reveal its content. This will require them to think creatively and critically, using a combination of logic and reasoning to solve the puzzle. Overall, this puzzle will provide a unique and challenging experience for users, while also honoring important historical figures and encouraging users to engage with their legacies in a meaningful way.

answer:Yes, you can use the `wc` command in Bash to achieve this. The `wc` command is used to print the number of lines, words, and characters in a file. Here is a sample code implementation in Bash: ``` #!/bin/bash if [ # -ne 1 ]; then echo "Usage: 0 <filename>" exit 1 fi filename=1 if [ ! -f filename ]; then echo "filename does not exist" exit 1 fi lines=(wc -l filename | awk '{print 1}') words=(wc -w filename | awk '{print 1}') characters=(wc -c filename | awk '{print 1}') echo "Number of lines: lines" echo "Number of words: words" echo "Number of characters: characters" ``` In this code, we first check if the user has provided a filename as input. If not, we print a usage message and exit. Then, we check if the file exists. If not, we print an error message and exit. Next, we use the `wc` command to count the number of lines, words, and characters in the file. We use `awk` to extract the count from the output of the `wc` command. Finally, we print the number of lines, words, and characters in the file.