mediumStringsPattern: Mixed
String Code Replacement Solution
Problem Statement
Given a string `transmission` and a dictionary `decodingMap`, replace all occurrences of codes in `transmission` with their corresponding values in `decodingMap` if the code exists, otherwise leave it unchanged.
Constraints
- 1 <= length of transmission string <= 1000
- 1 <= number of key-value pairs in decoding dictionary <= 100
Time: O(n*m) Space: O(n)
The optimal approach involves iterating through the transmission string and, for each position, checking all possible substrings starting at that position against the keys in the decoding dictionary. To further optimize, sorting the dictionary keys by length in descending order helps avoid partial replacements. This approach significantly reduces the number of comparisons needed.
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