import numpy as np import random n = 10 X = np.random.randint(1, 20, n*n).reshape(n,n) Y = np.random.randint(1, 20, n*n).reshape(n,n) result = np.zeros(X. shape) for i in range (len(X)): for j in range (len(Y[0])): for k in range (len (Y)): result[i][j] += X[i][k] * Y[k][j] result= result.reshape(-1,1) a = 0 for r in result: a = a + r sum_value = a[0] print("Total sum of all elements is {}".format(sum_value))     Complete analysis of this code and Big O

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Topological Sort

Topological sort is a sorting technique that sets up a hierarchy in a process. In this technique, when a directed network has nodes connected by arrows, the root node is placed before the successor node.