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Govind Pothuraju on Instagram: "👉 Comment “CODE” if you want solutions in C++, Java & Python Day 36/200: LeetCode 1358 — Number of Substrings Containing All Three Characters 💡 Given a string s consisting only of characters 'a', 'b', and 'c', return the number of substrings that contain at least one occurrence of all three characters. ✅ Brute Force: Check all substrings → O(n²) ❌ ✅ Optimal (Sliding Window): O(n) ✅ Approach: Maintain frequency of 'a', 'b', 'c' in a sliding window. Expand the win
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