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Longest Common Substring

Problem Statement

Given two strings 's1' and 's2', find the length of the longest substring which is common in both the strings.

Example 1:

Input: s1 = "abdca"
       s2 = "cbda"
Output: 2
Explanation: The longest common substring is "bd".

Example 2:

Input: s1 = "passport"
       s2 = "ppsspt"
Output: 3
Explanation: The longest common substring is "ssp".

Constraints:

  • 1 <= s1.length, s2.length <= 1000`
  • s1 and s2 consist of only lowercase English characters.

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