NPTEL The Joy of Computing Using Python.

Week 4 Assignment 01

r,c=input().split()

r=int(r)

c=int(c)

element =0

bank=[]

for i in range(1,r+1):

  drop=[]

  for j in range(1,c+1):

    element=element+1

    drop.append(element)

  bank.append(drop)

if len(bank)==1:

  for b in range(len(bank)):

      print(*bank[b],sep = " ",end="")

else:

  for b in range(len(bank)-1):

      print(*bank[b],sep = " ")

  last=len(bank)-1

  print(*bank[last],sep = " ",end="")

Week 4 Assignment 02

k=int(input())

ans=1

for a in range(1,k+1):

  ans=ans*a

print(ans, end="")

Week 4 Assignment 03

import random 

n=int(input())

list1=[]

flag=0

for i in range(n):

  list1.append(int(input()))

while(flag==0):

    i=random.randint(0,len(list1)-1)

    j=random.randint(0,len(list1)-1)

    if i!=j:

      #print("i and j before",list1[i],list1[j])

      a=list1[i]

      list1[i]=list1[j]

      list1[j]=a  

      #print("i and j after",list1[i],list1[j])

    if(list1==sorted(list1)):

        flag=1

        break

print(*list1,end="")

Week 6 Assignment 01

L = []

L=input()

Y=L.split(" ")

L = list(dict.fromkeys(Y))

for i in range(0,len(L)-1):

    print(L[i],end=" ")

print(L[-1],end="")

Week 6 Assignment 02

num=int(input())

n=0

while True:

    a=2**n

    if(a>=num):

        break

    else:

        n=n+1

b=2**(n)

if(num==b):

    print("YES", end="")

else:

    print("NO", end="")

Week 6 Assignment 03

matrix=[]

n=int(input())

for i in range(0,n):           

    a =[] 

    a=input()

    for j in range(0,n):      

         y=a.split(" ") 

    matrix.append(y) 

for i in range(n):

    for j in range(n):

        if(i<j):

            if(j==n-1):

                print("0",end="")

            else:

                print("0",end=" ")

        else:

            if(j==n-1):

                print(matrix[i][j],end="")

            else:

                print(matrix[i][j],end=" ")

        

    if i!=n-1:

        print()

Week 7 Assignment 01

n=int(input())

for i in range(1,n+1):

  for j in range(1,i+1):

    if j==i:

      print(j,end="")

    else:

      print(j,end=" ")

  if(i!=n):

    print()

Week 7 Assignment 02

def rotMatrix(mat): 

if not len(mat): 

return

top = 0

bottom = len(mat)-1

left = 0

right = len(mat[0])-1

while left < right and top < bottom: 

prev = mat[top+1][left] 

for i in range(left, right+1): 

currow = mat[top][i] 

mat[top][i] = prev 

prev = currow 

top += 1

for i in range(top, bottom+1): 

currow = mat[i][right] 

mat[i][right] = prev 

prev = currow 

right -= 1

for i in range(right, left-1, -1): 

currow = mat[bottom][i] 

mat[bottom][i] = prev 

prev = currow 

bottom -= 1

for i in range(bottom, top-1, -1): 

currow = mat[i][left] 

mat[i][left] = prev 

prev = currow 

left += 1

return mat 

l=[]

a=int(input())

for i in range(a):

  l1=[x for x in input().split()]

  l.append(l1)

r1=[rotMatrix(l)]

for i in range(a-1):

  print(' '.join(l[i]))

print(' '.join(l[a-1]),end='')

Week 7 Assignment 03

a = int(input())

mat=[]

for i in range(0,a):    

    l = list(map(int, input ().split ()))

    mat.append(l)

m=a

n=a

k = 0

l = 0 

count = 0 

total = a*a

  

while (k < m and l < n) : 

    if (count == total) : 

        break

  

    for i in range(k, m) : 

        print(mat[i][l], end = " ") 

        count += 1

          

    l += 1

  

    if (count == total) : 

        break

         

    for i in range (l, n) : 

        print( mat[m - 1][i], end = " ") 

        count += 1

          

    m -= 1

          

    if (count == total) : 

        break

   

    if (k < m) : 

        for i in range(m - 1, k - 1, -1) : 

            print(mat[i][n - 1], end = " ") 

            count += 1

    n -= 1

  

    if (count == total) : 

        break

           

    if (l < n) : 

        for i in range(n - 1, l - 1, -1) : 

            print( mat[k][i], end = " ") 

            count += 1

                  

    k += 1