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:
1, append the character to s.The compressed string s should not be returned separately, but instead, be stored in the input character array chars. Note that group lengths that are 10 or longer will be split into multiple characters in chars.
After you are done modifying the input array, return the new length of the array.
\n\nYou must write an algorithm that uses only constant extra space.
\n\n\n
Example 1:
\n\n\nInput: chars = ["a","a","b","b","c","c","c"]\nOutput: Return 6, and the first 6 characters of the input array should be: ["a","2","b","2","c","3"]\nExplanation: The groups are "aa", "bb", and "ccc". This compresses to "a2b2c3".\n\n\n
Example 2:
\n\n\nInput: chars = ["a"]\nOutput: Return 1, and the first character of the input array should be: ["a"]\nExplanation: The only group is "a", which remains uncompressed since it's a single character.\n\n\n
Example 3:
\n\n\nInput: chars = ["a","b","b","b","b","b","b","b","b","b","b","b","b"]\nOutput: Return 4, and the first 4 characters of the input array should be: ["a","b","1","2"].\nExplanation: The groups are "a" and "bbbbbbbbbbbb". This compresses to "ab12".\n\n
\n
Constraints:
\n\n1 <= chars.length <= 2000chars[i] is a lowercase English letter, uppercase English letter, digit, or symbol.Compiled with clang 11 using the latest C++ 20 standard.
Your code is compiled with level two optimization (-O2). AddressSanitizer is also enabled to help detect out-of-bounds and use-after-free bugs.
Most standard library headers are already included automatically for your convenience.
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Python 2.7.12.
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\\r\\n\\r\\nFor Map/TreeMap data structure, you may use sortedcontainers library.
\\r\\n\\r\\nNote that Python 2.7 will not be maintained past 2020. For the latest Python, please choose Python3 instead.
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\\r\\n\\r\\nFor hash table operations, you may use uthash. \\\"uthash.h\\\" is included by default. Below are some examples:
\\r\\n\\r\\n1. Adding an item to a hash.\\r\\n
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Some common data structure implementations are provided in the Algorithms module: https://www.rubydoc.info/github/kanwei/algorithms/Algorithms
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Go 1.21
Support https://godoc.org/github.com/emirpasic/gods@v1.18.1 library.
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Most libraries are already imported automatically for your convenience, such as array, bisect, collections. If you need more libraries, you can import it yourself.
\\r\\n\\r\\nFor Map/TreeMap data structure, you may use sortedcontainers library.
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