The Joy Of Computing Using Python Week 7 : Programming Assignment | NPTEL | Answers Jan 2023

The Joy of Computing using Python Week 7 - Programming Assignment 1,2 and 3 | NPTEL | Answer with Explanation

The Joy of Computing using Python - Course | NPTEL - All assignment

The Joy of Computing using Python Week 7: Programming Assignment 1

Given a sqaure matrix M, write a function DiagCalc that calculates the sum of left and right diagonals and prints it respectively.

Input:

A Number M 
A Matrix with M rows and M columns
[[1,2,3],[3,4,5],[6,7,8]] 

Output 
13
13

Explanation:
Sum of left diagonal is 1+4+8 = 13
Sum of right diagonal is 3+4+6 = 13

Answer

def DiagCalc(m):
    l=0
    r=0
    j=len(m)-1
    for i in range(len(m)):
        l=l+m[i][i]
        r=r+m[i][j]
        j=j-1
    print(l)
    print(r,end="")
     
        
n = int(input())
M = []
for i in range(n):
    L = list(map(int, input().split()))
    M.append(L)
DiagCalc(M)               

The Joy of Computing using Python Week 7: Programming Assignment 2

Given a matrix M write a function Transpose which accepts a matrix M and return the transpose of M. Transpose of a matrix is a matrix in which each row is changed to a column or vice versa.

Input 
A matrix M
[[1,2,3],[4,5,6],[7,8,9]]

Output
Transpose of M
[[1,4,7],[2,5,8],[3,6,9]]

Answer

def Transpose(N):
    M=[]
    for i in range(len(N)):
        k=[]
        for j in range(len(N[i])):
            k.append(N[j][i])
        M.append(k)
    return M

The Joy of Computing using Python Week 7: Programming Assignment 3

Given a matrix M write a function snake that accepts a matrix M and returns a list which contain elements in snake pattern of matrix M. (See explanation to know what is a snake pattern)

Input
A matrix M
91 59 21 63 
81 39 56 8 
28 43 61 58 
51 82 45 57

Output
[91, 59, 21, 63, 8, 56, 39, 81, 28, 43, 61, 58, 51, 82, 45, 57]

Answer

def  snake(M):
  s=[]
  for i in range(len(M)):
    if i%2==0:
      s+=M[i]
    else:
      s+=M[i][::-1]
  return(s) 

The Joy of Computing using Python - Course | NPTEL - All assignment

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