Matrix Archives

Recent Articles on Matrix

  1. Rotate Matrix Elements
  2. Inplace rotate square matrix by 90 degrees | Set 1
  3. Rotate a matrix by 90 degree without using any extra space | Set 2
  4. Rotate a Matrix by 180 degree
  5. Rotate each ring of matrix anticlockwise by K elements
  6. Turn an image by 90 degree
  7. Check if all rows of a matrix are circular rotations of each other
  8. Sort the given matrix
  9. Find the row with maximum number of 1s
  10. Find median in row wise sorted matrix
  11. Matrix Multiplication | Recursive
  12. Program to multiply two matrices
  13. Program for scalar multiplication of a matrix
  14. Program to print Lower triangular and Upper triangular matrix of an array
  15. Find distinct elements common to all rows of a matrix
  16. Print a given matrix in spiral form
  17. Find maximum element of each row in a matrix
  18. Find unique elements in a matrix
  19. Shift matrix elements row-wise by k
  20. Different Operations on Matrices
  21. Print a given matrix in counter-clock wise spiral form
  22. Swap major and minor diagonals of a square matrix
  23. Maximum path sum in matrix
  24. Squares of Matrix Diagonal Elements
  25. Move matrix elements in given direction and add elements with same value
  26. Sorting rows of matrix in ascending order followed by columns in descending order
  27. Sum of middle row and column in Matrix
  28. Row-wise vs column-wise traversal of matrix
  29. Rotate the matrix right by K times
  30. Program to check idempotent matrix
  31. Program to check Involutory Matrix
  32. Interchange elements of first and last rows in matrix
  33. Print matrix in zag-zag fashion
  34. Row wise sorting in 2D array
  35. Program for Markov matrix
  36. Program to check diagonal matrix and scalar matrix
  37. Sort the matrix row-wise and column-wise
  38. Find the number of islands
  39. Magic Square | Even Order
  40. Magic Square
  41. Check given matrix is magic square or not
  42. Check given matrix is magic square or not
  43. Kronecker Product of two matrices
  44. Count sub-matrices having sum divisible ‘k’
  45. Diagonally Dominant Matrix
  46. Minimum operations required to make each row and column of matrix equals
  47. Count frequency of k in a matrix of size n where matrix(i, j) = i+j
  48. Given 1’s, 2’s, 3’s ……k’s print them in zig zag way.
  49. Number of cells a queen can move with obstacles on the chessborad
  50. Maximum product of 4 adjacent elements in matrix
  51. Minimum flip required to make Binary Matrix symmetric
  52. Program to check if matrix is lower triangular
  53. Program to check if matrix is upper triangular
  54. Frequencies of even and odd numbers in a matrix

  55. Center element of matrix equals sums of half diagonals
  56. Program for Identity Matrix
  57. Program to swap upper diagonal elements with lower diagonal elements of matrix.
  58. Sparse Matrix Representations
  59. Ways of filling matrix such that product of all rows and all columns are equal to unity
  60. Mirror of matrix across diagonal
  61. Find if there is a rectangle in binary matrix with corners as 1
  62. Find all rectangles filled with 0
  63. Shortest distance between two cells in a matrix or grid
  64. Counting sets of 1s and 0s in a binary matrix
  65. Search in a row wise and column wise sorted matrix
  66. Create a matrix with alternating rectangles of O and X
  67. Zigzag (or diagonal) traversal of Matrix
  68. Inplace (Fixed space) M x N size matrix transpose | Updated
  69. Minimum cost to sort a matrix of numbers from 0 to n^2 – 1
  70. Unique cells in a binary matrix
  71. Count entries equal to x in a special matrix
  72. Check if a given matrix is sparse or not
  73. Row-wise common elements in two diagonals of a square matrix
  74. Check if sums of i-th row and i-th column are same in matrix
  75. Find row number of a binary matrix having maximum number of 1s
  76. Program to check if a matrix is symmetric
  77. Find if a 2-D array is completely traversed or not by following the cell values
  78. Program to Print Matrix in Z form
  79. Print all palindromic paths from top left to bottom right in a matrix
  80. Possible moves of knight
  81. Efficiently compute sums of diagonals of a matrix
  82. Boundary elements of a Matrix
  83. Print a matrix in a spiral form starting from a point
  84. Print matrix in snake pattern
  85. Program to Interchange Diagonals of Matrix
  86. Find difference between sums of two diagonals
  87. Construct Ancestor Matrix from a Given Binary Tree
  88. Construct tree from ancestor matrix
  89. Circular Matrix (Construct a matrix with numbers 1 to m*n in spiral way)
  90. Program for Sudoku Generator
  91. Program for Conway’s Game Of Life
  92. Maximum sum of hour glass in matrix
  93. Maximum and Minimum in a square matrix.
  94. Print matrix in antispiral form
  95. Program to find Normal and Trace of a matrix
  96. Sort a Matrix in all way increasing order
  97. Minimum operations required to set all elements of binary matrix
  98. Print a given matrix in reverse spiral form
  99. C Program To Check whether Matrix is Skew Symmetric or not
  100. Sum of matrix element where each elements is integer division of row and column
  101. Sparse Matrix and its representations
  102. Find number of transformation to make two Matrix Equal
  103. Form coils in a matrix
  104. Sum of matrix in which each element is absolute difference of its row and column numbers
  105. Check horizontal and vertical symmetry in binary matrix
  106. Maximum determinant of a matrix with every values either 0 or n
  107. Sum of both diagonals of a spiral odd-order square matrix
  108. Find pair of rows in a binary matrix that has maximum bit difference
  109. Find all permuted rows of a given row in a matrix
  110. Find perimeter of shapes formed with 1s in binary matrix
  111. Print cells with same rectangular sums in a matrix
  112. Print matrix in diagonal pattern
  113. Maximum difference of sum of elements in two rows in a matrix
  114. Find pairs with given sum such that elements of pair are in different rows
  115. Total coverage of all zeros in a binary matrix
  116. Replace every matrix element with maximum of GCD of row or column
  117. Count all sorted rows in a matrix
  118. Queries in a Matrix
  119. Maximum XOR value in matrix
  120. Maximum mirrors which can transfer light from bottom to right
  121. Direction at last square block
  122. Print K’th element in spiral form of matrix
  123. Find if given matrix is Toeplitz or not
  124. Count zeros in a row wise and column wise sorted matrix
  125. Count Negative Numbers in a Column-Wise and Row-Wise Sorted Matrix
  126. Find size of the largest ‘+’ formed by all ones in a binary matrix
  127. Return previous element in an expanding matrix
  128. Print n x n spiral matrix using O(1) extra space
  129. Shortest path in a Binary Maze
  130. Find orientation of a pattern in a matrix
  131. Find a specific pair in Matrix
  132. Print maximum sum square sub-matrix of given size
  133. Common elements in all rows of a given matrix
  134. In-place convert matrix in specific order
  135. A Boolean Matrix Question
  136. Given a Boolean Matrix, find k such that all elements in k’th row are 0 and k’th column are 1.
  137. Print unique rows in a given boolean matrix
  138. Find the largest rectangle of 1’s with swapping of columns allowed
  139. Validity of a given Tic-Tac-Toe board configuration
  140. Submatrix Sum Queries
  141. Program for Rank of Matrix
  142. Maximum size rectangle binary sub-matrix with all 1s
  143. Maximum size square sub-matrix with all 1s
  144. Find sum of all elements in a matrix except the elements in row and/or column of given cell?
  145. Count number of islands where every island is row-wise and column-wise separated
  146. Find a common element in all rows of a given row-wise sorted matrix
  147. Given a matrix of ‘O’ and ‘X’, replace ‘O’ with ‘X’ if surrounded by ‘X’
  148. Given a matrix of ‘O’ and ‘X’, find the largest subsquare surrounded by ‘X’
  149. Flood fill Algorithm – how to implement fill() in paint?
  150. Print all elements in sorted order from row and column wise sorted matrix
  151. Given an n x n square matrix, find sum of all sub-squares of size k x k
  152. Program to find transpose of a matrix
  153. C program for addition of two matrices
  154. C program for subtraction of matrices
  155. Collect maximum points in a grid using two traversals
  156. Collect maximum coins before hitting a dead end
  157. Number of paths with exactly k coins
  158. Find length of the longest consecutive path from a given starting character
  159. Find the longest path in a matrix with given constraints
  160. Minimum Initial Points to Reach Destination
  161. Divide and Conquer | Set 5 (Strassen’s Matrix Multiplication)
  162. Dynamic Programming | Set 27 (Maximum sum rectangle in a 2D matrix)

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