Python Program to Reverse Every Kth row in a MatrixWe are given a matrix (a list of lists) and an integer K. Our task is to reverse every Kth row in the matrix. For example:Input : a = [[5, 3, 2], [8, 6, 3], [3, 5, 2], [3, 6], [3, 7, 4], [2, 9]], K = 4 Output : [[5, 3, 2], [8, 6, 3], [3, 5, 2], [6, 3], [3, 7, 4], [2, 9]]Using reversed() and loopWe c
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Python Program to Convert String Matrix Representation to MatrixGiven a String with matrix representation, the task here is to write a python program that converts it to a matrix. Input : test_str = "[gfg,is],[best,for],[all,geeks]"Output : [['gfg', 'is'], ['best', 'for'], ['all', 'geeks']]Explanation : Required String Matrix is converted to Matrix with list as
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Python - Count the frequency of matrix row lengthGiven a Matrix, the task is to write a Python program to get the count frequency of its rows lengths. Input : test_list = [[6, 3, 1], [8, 9], [2], [10, 12, 7], [4, 11]] Output : {3: 2, 2: 2, 1: 1} Explanation : 2 lists of length 3 are present, 2 lists of size 2 and 1 of 1 length is present. Input :
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Python - Convert Integer Matrix to String MatrixGiven a matrix with integer values, convert each element to String. Input : test_list = [[4, 5, 7], [10, 8, 3], [19, 4, 6]] Output : [['4', '5', '7'], ['10', '8', '3'], ['19', '4', '6']] Explanation : All elements of Matrix converted to Strings. Input : test_list = [[4, 5, 7], [10, 8, 3]] Output : [
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Python Program to Convert Tuple Matrix to Tuple ListGiven a Tuple Matrix, flatten to tuple list with each tuple representing each column. Example: Input : test_list = [[(4, 5), (7, 8)], [(10, 13), (18, 17)]] Output : [(4, 7, 10, 18), (5, 8, 13, 17)] Explanation : All column number elements contained together. Input : test_list = [[(4, 5)], [(10, 13)]
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Python - Group Elements in MatrixGiven a Matrix with two columns, group 2nd column elements on basis of 1st column. Input : test_list = [[5, 8], [2, 0], [5, 4], [2, 3], [2, 9]] Output : {5: [8, 4], 2: [0, 3, 9]} Explanation : 8 and 4 are mapped to 5 in Matrix, all others to 2. Input : test_list = [[2, 8], [2, 0], [2, 4], [2, 3], [2
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Python - Assigning Subsequent Rows to Matrix first row elementsGiven a (N + 1) * N Matrix, assign each column of 1st row of matrix, the subsequent row of Matrix. Input : test_list = [[5, 8, 10], [2, 0, 9], [5, 4, 2], [2, 3, 9]] Output : {5: [2, 0, 9], 8: [5, 4, 2], 10: [2, 3, 9]} Explanation : 5 paired with 2nd row, 8 with 3rd and 10 with 4th Input : test_list
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Adding and Subtracting Matrices in PythonIn this article, we will discuss how to add and subtract elements of the matrix in Python. Example: Suppose we have two matrices A and B. A = [[1,2],[3,4]] B = [[4,5],[6,7]] then we get A+B = [[5,7],[9,11]] A-B = [[-3,-3],[-3,-3]] Now let us try to implement this using Python 1. Adding elements of
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Python - Convert Matrix to DictionaryThe task of converting a matrix to a dictionary in Python involves transforming a 2D list or matrix into a dictionary, where each key represents a row number and the corresponding value is the row itself. For example, given a matrix li = [[5, 6, 7], [8, 3, 2], [8, 2, 1]], the goal is to convert it i
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Python - Group similar elements into MatrixSometimes, while working with Python Matrix, we can have a problem in which we need to perform grouping of all the elements with are the same. This kind of problem can have applications in data domains. Let's discuss certain ways in which this task can be performed. Input : test_list = [1, 3, 4, 4,
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