Given an array of digits digits, return the largest multiple of three that can be formed by concatenating some of the given digits in any order. If there is no answer return an empty string.
Since the answer may not fit in an integer data type, return the answer as a string. Note that the returning answer must not contain unnecessary leading zeros.
\n\n\n
Example 1:
\n\n\nInput: digits = [8,1,9]\nOutput: "981"\n\n\n
Example 2:
\n\n\nInput: digits = [8,6,7,1,0]\nOutput: "8760"\n\n\n
Example 3:
\n\n\nInput: digits = [1]\nOutput: ""\n\n\n
\n
Constraints:
\n\n1 <= digits.length <= 1040 <= digits[i] <= 9Compiled with clang 11 using the latest C++ 17 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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\\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\\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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