Array practice problems and Solutions

In This Article, We will solve Array-related problems.

1. Write a program to print the marks obtained by a student in five tests.

2. Write a program to print the average marks obtained by a student in five tests.

3. Write a program to print a string using an array.

4. Write a program to input a string through the keyboard and print the same.

5. Write a program to find the sum of negative and positive integers.

6. Write a program to find the sum of N numbers in an array

7. Write a program to find the smallest element in the array

8. Write a program to find the largest element in the array

9. Write a program to find the 2nd smallest element in the array

10. Write a program to find the 2nd largest element in the array

11. Write a program to Print the Average of Numbers in array at an even position  

12. Write a program to Print the Average of Numbers in array at an odd position  

13. Write a program to print array elements in reverse order.

14. Write a program to print array elements in reverse order using the swapping method.

15. Write a program to separate even and odd numbers in an array.

16. Write a program to print the frequency of all numbers in an array.

17. Write a program to print the most occurring elements.

18. Write a program to separate even and odd position numbers in an array.

19. Write a program to separate positive and negative numbers in an array.

20. Write a program to print lists of occurring elements in an array.

21. Write a program to insert an element into an array at a specified position 

22. Write a program to delete a specified integer in an array

23. Write a program to search a specified integer in an array

24. Write a program to find the array type 

25. Write a program to sort the elements of an array 

26. Write a program to count distinct elements of an array

27. Write a program to remove duplicate elements in an array

28. Write a program to check if two arrays are the same or not.

29. Write a program to check if two arrays are disjoint or not.

30. Write a program to check if one array is a subset of another array or not.

31. Write a Program to Find the index of an element in an array.

32. Write a Program to Sort an array in Descending order.

33. Write a Program to Merge two unsorted arrays of different lengths.

34. Write a Program to remove an element from an array by index.

35. Write a Program to Find a pair with a given sum in the array.

36. Write a Program to Find two elements whose sum is closest to zero in an Array

37. Write a Program to Move all zeros to the end of an Array.

38. Write a Program to Move all zeros to the Start of an Array.

39. Write a Program to Find the mean and median of an unsorted array.

40. Write a Program to Segregate 0s and 1s in an array.

41. Write a Program to Find the median of two sorted arrays of different sizes.

42. Write a Program to Find the median of two unsorted arrays.

43. Write a Program to Find the Max sum contiguous subarray.

44. Write a Program to Find a pair with maximum product in an array.

45. Write a Program to Find the maximum product of 3 numbers in an array.

46. Write a Program to Count inversions in an array.

47. Write a Program to sort an array of 0s, 1s, and 2s.

48. Write a program to find Maximum the difference between two elements in an array.

49. Write a program to Find the Minimum difference between two elements in an array.

50. Write a Program to Find missing numbers in an array.

Matrix or 2D Array-related problems.

1. Write a Program to read and display a Matrix.

2. Write a Program to Find the sum of all elements in a 2d array or Matrix.

3. Write a Program to find the addition of two matrices.

4. Write a Program to find the multiplication of two matrices.

5. Write a Program to the Subtraction of two matrices.

6. Write a Program to print the square of each element of the 2d array or matrix.

7. Write a Program to find the transpose of a matrix.

8. Write a Program to accept two matrices and check whether they are equal or Not.

9. Write a Program to check whether a given matrix is an identity matrix or not.

10. Write a Program to find whether the given is the matrix is diagonal or not.

11. Write a Program to check whether a matrix is a scalar or not.

12. Write a Program to find the sum of all diagonal elements of a matrix.

13. Write a Program to check whether a matrix is sparse or not.

14. Write a Program to display a lower triangular matrix.

15. Write a Program to display an upper triangular matrix.

16. Write a Program to check whether a matrix is symmetric or not.

17. Write a Program to find the normal and trace of a matrix.

18. Write a Program to find the sum of an upper triangular matrix.

19. Write a Program to find the sum of a lower triangular matrix.

20. Write a Program to find the maximum element in the matrix.

21. Write a Program to find the minimum element in the matrix.

22.  Write a Program to find the position of an element in a 2d array or Matrix.

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