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Leetcode Problem 944. Delete Columns to Make Sorted

944. Delete Columns to Make Sorted

Leetcode Solutions

Matrix Traversing to Find Unsorted Columns

  1. Initialize a counter variable answer to 0 to keep track of the number of unsorted columns.
  2. Iterate over each column index col from 0 to the length of the strings minus 1.
    • For each column, iterate over the rows starting from the second row (index 1).
    • Compare the character at the current row and column with the character at the same column in the previous row.
    • If the current character is smaller, increment answer and break the inner loop as the column is unsorted.
    • Otherwise, continue to the next row.
  3. After iterating through all columns, return the value of answer.
UML Thumbnail

Transposed Grid Checking for Sorted Columns

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