Leetcode Problem 2844. Minimum Operations to Make a Special Number

2844. Minimum Operations to Make a Special Number

Leetcode Solutions

Iterative Search for Special Number Patterns

  1. Initialize variables to keep track of the minimum operations for each pattern ('00', '25', '50', '75').
  2. Iterate through the string from the end to the beginning.
  3. If the current digit is '0' or '5', check the digits before it to find a match for a special pattern.
  4. If a match is found, calculate the number of operations needed to delete the digits in between and update the minimum operations for that pattern.
  5. After the iteration, compare the minimum operations for all patterns and return the smallest one.
  6. If no special pattern is found, return the length of the string minus the number of '0's (since the number can be made special by deleting all digits except one '0').
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Dynamic Programming to Find Special Number

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