#914Medium#8 in D. E. Shaw's list· asked at 6 companies
Longest String Chain
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What we know
Example 1
Input: words = ["a","b","ba","bca","bda","bdca"] Output: 4
"a" -> "ba" -> "bda" -> "bdca".
Example 2
Input: words = ["xbc","pcxbcf","xb","cxbc","pcxbc"] Output: 5
Example 3
Input: words = ["abcd","dbqca"] Output: 1
Constraints
- •
1 <= words.length <= 1000 - •
1 <= words[i].length <= 16 - •
words[i]only consists of lowercase English letters.