该博客详细介绍了LeetCode第471题的解题思路和方法，使用动态规划求解字符串的最短编码长度。作者通过建立二维DP数组，遍历所有子字符串并尝试以中间位置拆分，对比不同编码方式的长度，以找到最短的编码。最后，博主给出了具体的实现代码，并讨论了时间复杂度和空间复杂度。
题目：
Given a non-empty string, encode the string such that its encoded length is the shortest.
The encoding rule is: k[encoded_string], where the encoded_string inside the square brackets is being repeated exactly k times.
Note:
- k will be a positive integer and encoded string will not be empty or have extra space.
- You may assume that the input string contains only lowercase English letters. The string's length is at most 160.
- If an encoding process does not make the string shorter, then do not encode it. If there are several solutions, return any of them is fine.
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