New Perspectives on HTML5, CSS3, and JavaScript
6th Edition
ISBN: 9781305503922
Author: Patrick M. Carey
Publisher: Cengage Learning
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Chapter 4.3, Problem 3QC
Program Plan Intro
To provide the transformation to rotate an object 30° counter-clockwise around the x-axis.
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Complete the transititon function in the image:
"""You are given an n x n 2D mat representing an image.
Rotate the image by 90 degrees (clockwise).
Follow up:Could you do this in-place?"""
# clockwise rotate# first reverse up to down, then swap the symmetry# 1 2 3 7 8 9 7 4 1# 4 5 6 => 4 5 6 => 8 5 2# 7 8 9 1 2 3 9 6 3
def rotate(mat): if not mat: return mat mat.reverse() for i in range(len(mat)): for j in range(i): mat[i][j], mat[j][i] = mat[j][i], mat[i][j] return mat
if __name__ == "__main__": mat = [[1, 2, 3], [4, 5, 6], [7, 8, 9]] print(mat) rotate(mat) print(mat).
Draw the following shapes as attached in the picture
Chapter 4 Solutions
New Perspectives on HTML5, CSS3, and JavaScript
Ch. 4.1 - Prob. 1QCCh. 4.1 - Prob. 2QCCh. 4.1 - Prob. 3QCCh. 4.1 - Prob. 4QCCh. 4.1 - Prob. 5QCCh. 4.1 - Prob. 6QCCh. 4.1 - Prob. 7QCCh. 4.1 - Prob. 8QCCh. 4.1 - Prob. 9QCCh. 4.2 - Prob. 1QC
Ch. 4.2 - Prob. 2QCCh. 4.2 - Prob. 3QCCh. 4.2 - Prob. 4QCCh. 4.2 - Prob. 5QCCh. 4.2 - Prob. 6QCCh. 4.2 - Prob. 7QCCh. 4.2 - Prob. 8QCCh. 4.2 - Prob. 9QCCh. 4.3 - Prob. 1QCCh. 4.3 - Prob. 2QCCh. 4.3 - Prob. 3QCCh. 4.3 - Prob. 4QCCh. 4.3 - Prob. 5QCCh. 4.3 - Prob. 6QCCh. 4.3 - Prob. 7QCCh. 4.3 - Prob. 8QCCh. 4.3 - Prob. 9QCCh. 4 - Prob. 1RACh. 4 - Prob. 2RACh. 4 - Prob. 3RACh. 4 - Prob. 4RACh. 4 - Prob. 5RACh. 4 - Prob. 6RACh. 4 - Prob. 7RACh. 4 - Prob. 8RACh. 4 - Prob. 9RACh. 4 - Prob. 10RACh. 4 - Prob. 11RACh. 4 - Prob. 12RACh. 4 - Prob. 13RACh. 4 - Prob. 14RACh. 4 - Prob. 15RACh. 4 - Prob. 16RACh. 4 - Prob. 17RACh. 4 - Prob. 18RACh. 4 - Prob. 19RACh. 4 - Prob. 20RACh. 4 - Prob. 21RACh. 4 - Prob. 22RACh. 4 - Prob. 23RACh. 4 - Prob. 24RACh. 4 - Prob. 25RACh. 4 - Prob. 1CP1Ch. 4 - Prob. 2CP1Ch. 4 - Prob. 3CP1Ch. 4 - Prob. 4CP1Ch. 4 - Prob. 5CP1Ch. 4 - Prob. 6CP1Ch. 4 - Prob. 7CP1Ch. 4 - Prob. 8CP1Ch. 4 - Prob. 9CP1Ch. 4 - Prob. 10CP1Ch. 4 - Prob. 11CP1Ch. 4 - Prob. 1CP2Ch. 4 - Prob. 2CP2Ch. 4 - Prob. 3CP2Ch. 4 - Prob. 4CP2Ch. 4 - Prob. 5CP2Ch. 4 - Prob. 6CP2Ch. 4 - Prob. 7CP2Ch. 4 - Prob. 8CP2Ch. 4 - Prob. 9CP2Ch. 4 - Prob. 10CP2Ch. 4 - Prob. 11CP2Ch. 4 - Prob. 12CP2Ch. 4 - Prob. 1CP3Ch. 4 - Prob. 2CP3Ch. 4 - Prob. 3CP3Ch. 4 - Prob. 4CP3Ch. 4 - Prob. 5CP3Ch. 4 - Prob. 6CP3Ch. 4 - Prob. 7CP3Ch. 4 - Prob. 8CP3Ch. 4 - Prob. 9CP3Ch. 4 - Prob. 10CP3Ch. 4 - Prob. 11CP3Ch. 4 - Prob. 12CP3Ch. 4 - Prob. 13CP3Ch. 4 - Prob. 1CP4Ch. 4 - Prob. 2CP4Ch. 4 - Prob. 3CP4Ch. 4 - Prob. 4CP4Ch. 4 - Prob. 5CP4Ch. 4 - Prob. 6CP4
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