How to Solve Longest Common Subsequence Problem
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Longest Common Subsequence
Given two strings text1 and text2, return the length of their longest common subsequence. If there is no common subsequence, return 0. A subsequence of a string is a new string generated from the orig...
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Understanding the Longest Common Subsequence Problem
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Problem Statement
Given two strings text1 and text2, return the length of their longest common subsequence. If there is no common subsequence, return 0. A subsequence of a string is a new string generated from the original string with some characters (can be none) deleted without changing the relative order of the remaining characters. For example, "ace" is a subsequence of "abcde". A common subsequence of two strings is a subsequence that is common to both strings.
Longest Common Subsequence
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Examples
text1 = "abcde", text2 = "ace"
3
The longest common subsequence is "ace" and its length is 3.
text1 = "abc", text2 = "abc"
3
The longest common subsequence is "abc" and its length is 3.
text1 = "abc", text2 = "def"
0
There is no such common subsequence, so the result is 0.
Constraints
1 <= text1.length, text2.length <= 1000
text1 and text2 consist of only lowercase English characters.
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