python

              PYTHON NPTEL ASSIGNMENT-1

1. def alternating(l):
2. if(len(l)>1):
3. if(l[0]>l[1]):
4. for i in range(len(l)-1):
5. if(l[i]==l[i-1]):
6. return False
7. if(i%2==0):
8. if(l[i]<l[i+1]): return="" false="" if(l[0]<l[1]):="" for="" i="" in="" range(len(l)-1):="" if(i%2="=0):" if(l[i]="">l[i+1]):
9. return False
10. return True
11. 
    
12. 
    
13. def ascending(lst):
14. for i in range(0, len(lst) - 1):
15. if lst[i] > lst[i+1]:
16. return False
17. return True
19. def matmult(X,Y):
20. col= len(Y[0])
21. row= len(X)
22. result = [[0 for i in range(col)] for j in range(row)]
23. 
    
24. #print(result)
25. #print(result)
26. for i in range(len(X)):
27. for j in range(len(Y[0])):
28. for k in range(len(Y)):
29. result[i][j] += X[i][k] * Y[k][j]
30. return result
31. </l[i+1]):>

Can be tested with the following code (Test Cases) :-

                       QUESTION NUM 2

1. >>> ascending([])
2. True
3. 
   
4. >>> ascending([3,3,4])
5. True
6. 
   
7. >>> ascending([7,18,17,19])
8. False
9. 
   
10. >>> alternating([])
11. True
12. 
    
13. >>> alternating([1,3,2,3,1,5])
14. True
15. 
    
16. >>> alternating([3,2,3,1,5])
17. True
18. 
    
19. >>> alternating([3,2,2,1,5])
20. False
21. 
    
22. >>> alternating([3,2,1,3,5])
23. False
24. 
    
25. >>> matmult([[1,2],[3,4]],[[1,0],[0,1]])
26. [[1,2],[3,4]]
27. 
    
28. >>> matmult([[1,2,3],[4,5,6]],[[1,4],[2,5],[3,6]])
29. [[14, 32], [32, 77]]