Solution: Distinct Subsequences
Understand how to solve the distinct subsequences problem where you count how many subsequences of string s match string t exactly. Learn an efficient dynamic programming technique that uses a 1D array for space optimization, iterating strings in reverse to track subsequence counts. This lesson helps you develop a strong grasp of DP optimization in string matching problems.
We'll cover the following...
We'll cover the following...
Statement
Given two strings, s and t, determine how many distinct subsequences of s match t exactly.
Note: A subsequence is formed by deleting zero or more characters from s without changing the relative order of the remaining characters.
You may assume the result will always fit within a
Constraints:
s.length,t.length...