step 1 Setup.
npm install
step 2 Test.
npm run test
step 3 Compile scripts and run
npm start
Given a string s, find the longest palindromic substring in s. You may assume that the maximum length of s is 1000.
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Example 1: Input: "babad" Output: "bab" Note: "aba" is also a valid answer.
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Example 2: Input: "cbbd" Output: "bb"