How to Solve Length of the Longest Valid Substring Problem
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Length of the Longest Valid Substring
You are given a string word and an array of strings forbidden. A string is called valid if none of its substrings are present in forbidden. Return the length of the longest valid substring of the stri...
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Understanding the Length of the Longest Valid Substring Problem
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Problem Statement
You are given a string word and an array of strings forbidden. A string is called valid if none of its substrings are present in forbidden. Return the length of the longest valid substring of the string word. A substring is a contiguous sequence of characters in a string, possibly empty.
Length of the Longest Valid Substring
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Examples
word = "cbaaaabc", forbidden = ["aaa","cb"]4There are 11 valid substrings in word: "c", "b", "a", "ba", "aa", "bc", "baa", "aab", "ab", "abc" and "aabc". The length of the longest valid substring is 4. It can be shown that all other substrings contain either "aaa" or "cb" as a substring.
word = "leetcode", forbidden = ["de","le","e"]4There are 11 valid substrings in word: "l", "t", "c", "o", "d", "tc", "co", "od", "tco", "cod", and "tcod". The length of the longest valid substring is 4. It can be shown that all other substrings contain either "de", "le", or "e" as a substring.
Constraints
1 <= word.length <= 105word consists only of lowercase English letters.1 <= forbidden.length <= 1051 <= forbidden[i].length <= 10forbidden[i] consists only of lowercase English letters.How Interview Coder Helps with Leetcode Problems
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