Minimum Window Substring

📝 Description

Find the smallest substring of s containing all characters of t.

Input Format

s (string), t (string)

Output Format

smallest substring (string)

Constraints

1 ≤ s.length, t.length ≤ 10^5

🔍 Sample Input

"ADOBECODEBANC", "ABC"
            

✅ Sample Output

"BANC"