1. Write a program to read an N * M matrix values and rearrange the rows as per its row sum

example 4 x 3 matrix

4 2 8
1 5 2
3 5 2
2 6 9

the resultant matrix

1 5 2
3 5 2
4 2 8
2 6 9

2. write a program to read the size of a matrix and generate the magic square matrix.
3. write a program to read an n x m matrix and print the saddle point value of matrix. The saddle point value is a value which is smaller in its row, greater in its column.

example 3 x 4 matrix
1 2 3 4
5 6 8 9
4 5 3 2

the saddle point is 5






4. Write a program to read month and year as input and print its monthly calendar.

example
month = 10
year - 2025

the Monthly Calendar of October-2025

SUN MON TUE WED THU FRI SAT
- - - 1 2 3 4
5 6 7 8 9 10 11
12 13 14 15 16 17 18
19 20 21 22 23 24 25
26 27 28 29 30 31 5. write a program to read a matrix of nxm size and find the mirror image of the matrix by reversing each row
Display both the original and mirrored matrix.

6. write a program to read an N number of single dimensional array values of varying size and combine all of them into a matrix.
ex.
4 arrays
First array values - 3
1
4
5
Second array values - 2
2
6
Third array - 5
7
3
5
8
1
Fourth array - 6
9
8
5
3
4
1

The resultant Matrix is
1 4 5
2 6
7 3 5 8 1
9 8 5 3 4 1






7. write a program to read an n x m matrix and find the sum of particular row of matrix.
8. Write a program to read two matrices A & B and find its product of A and B.

9. write a program to read an n x m matrix and print particular row elements of matrix.
10. write an program to read an n x m matrix and count the +ve and -ve values present in the matrix.
11. Write a program to read an N * M matrix values and rearrange the columns as per its column sum

12. Write a program to read the size(n) of square matrix and fill the matrix with first n2 natural numbers and rotate the matrix in any one of the degrees namely 45°, 90°, 180°, 270°. The choice must be thrown to user to select the rotation degrees. The output must be as per the choice selected by user.
EXAMPLE 1:
INPUT :
SIZE :3
1 2 3
4 5 6
7 8 9
Select an option
1. Rotate 90 deg.
2. Rotate 180 deg.
3. Rotate 270 deg
Enter your choice : 1
OUTPUT :
7 4 1
8 5 2
9 6 3
EXAMPLE 2
INPUT :
SIZE : 3
1 2 3
4 5 6
7 8 9
Select an option
1. Rotate 90 deg.
2. Rotate 180 deg.
3. Rotate 270 deg
Enter your choice :3
OUTPUT :
3 6 9
2 5 8
1 4 7
13. write a program to read a matrix of nxm size and find, print the frequency of each value of matrix.
14. write a program to read a matrix of NxM size and print its all possible sub matrices The submatrix row and column may be of any size but must be more than 1.




15. Write a program to read two matrices and find out both the matrices are equal or not.
16. write a program to read an n x m matrix and store first nxm natural numbers in the matrix.

for example 3 x 4 size matrix, first 12 natural numbers

1 2 3 4
5 6 7 8
9 10 11 12








17. Write a program to read an N * M matrix values and find out the matrix is symmetic matrix or not. [ A matrix is said to be symmetric matrix when matrix and its transpose are equal. ]



18. write a program to read N number of words and store it in matrix form like each word in a row. Allow the user to enter a word and check whether it appears horizontally or vertically in the matrix



19. write a program to read an n x m matrix and find the sum of all values of a matrix.
20. Write a program to read a matrix and print its upper diagonal, lower diagonal, diagonal, and right diagonal elements separately in matrix form. 21. Write a program to read two different arrays name A & B and find out the two array is anagram of each other. 22. write a program to read an n x m matrix and find the greatest, smallest value of matrix.
23. Write a program to read a NxM matrix and print the greatest sum submatrix.
24. 25. write a program to read a matrix of NxM size and print its row values from last to first.



26. Write a program to read an N * M matrix values and print the row which rowsum is the greatest among other rows.
INPUT N = 4
M = 5
THE MATRIX VALUES ARE
4 16 12 7 24
2 8 14 5 19
1 3 6 8 55
7 10 5 15 34

OUTPUT :
THE GREATEST ROW SUM – ROW VALUES ARE

3RD ROW 1 3 6 8 55 = 73

2) INPUT N = 0
M = 0
OUTPUT :
INVALID MATRIX SIZE.
27. Write a program to read two matrices A & B and find its sum of A and B.

28. Write a program to read an n x m matrix and print all values in matrix format
29. write a program to read an n x m matrix and find the product of upper diagonal elements of matrix.
30. write a program to create an N x N square matrix and fill the first NxN natural numbers in circular form.

example
n=5

output
01 02 03 04 05
16 17 18 19 06
15 25 25 20 07
14 23 22 21 08
13 12 11 10 09





31. Write a program to read a binary matrix of size n x m and find the matrix is a map or not. A matrix is said to be a map when 1’s are present and leads continuously from starting index (0,0) to ending index (n-1,m-1) either row or column direction. Lead means 1in are present in adjacent cells in a row or column. 32. write a program to read a square matrix of nxn size and check the matrix is identity matrix or not.

[The matrix is said to be identity matrix, when only the diagonal elements are 1, and all other elements are 0.]
33. write a program to read an n x m matrix and print its transpose matrix.

example 3 x 4 matrix
1 2 3 4
5 6 1 3
4 5 3 2

the transpose is
1 5 4
2 6 5
3 1 3
4 3 2


34. write a program to read an n x m matrix and print particular column elements of matrix.
35. write a program to read a matrix of nxn size and check the matrix is magic square matrix or not.

The matrix is said to be a magic square when sum of rows, columns, and diagonals are equal.

example n=3

2 7 6
9 5 1
4 3 8

when sum of rows, columns and diagonals yields same value, that is 15.

36. Write a program to read an NxM matrix and find out the number of sub square matrices(size should be above 1) in it. And also print each one of that.

INPUT : 1 2 4 6
7 3 2 8
8 1 5 4
OUTPUT
1 2 2 4 4 6 7 3
7 3 3 2 2 8 8 1 . . . and so on
37. write a program to read a matrix of NxM size and print its column values from last to first.