Web Reference: Apr 27, 2023 · A special compression mechanism can arbitrarily delete 0 or more characters and replace them with the deleted character count. Given two strings, S and T where S is a normal string and T is a compressed string, determine if the compressed string T is valid for the plaintext string S. Given an array of characters chars, compress it using the following algorithm: Begin with an empty string s. For each group of consecutive repeating characters in chars: If the group's length is 1, append the character to s. Otherwise, append the character followed by the group's length. Sep 6, 2010 · It can't be built specifically for every string, but you can have a single global tree used to encode all strings. If you build it from the same language as the input strings (English or whatever), you should still get good compression, although not as good as with a custom tree for every input.
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