Dsa
Two Pointers
Warm-up
Minimum Window Substring for Target Characters
Given a string and a target character set, find the minimum window substring that contains all characters from the target character set. If no such substring exists, return an empty string. If there are multiple valid substrings, return the one that appears first.
Example:
Input: "ADOBECODEBANC", target = "ABC"
Output: "BANC"
(This substring contains all characters A, B, C)
Key concepts
two_pointerssubstringsliding_window
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