DSA
Covers: Brute Force O(n²), Sliding Window O(n). Classic premium sliding-window problem using a character frequency map.
Covers: Brute Force, Optimal Prefix Sum. Best — Time O(n), Space O(n).
Covers: Naive, Better. Optimal — Time O(n), Space O(n-k).
Sliding Window - Fixed approach. Optimal — Time O(n), Space O(1).
5 approaches incl. Brute Force, Better, Optimized Approach: SLiding…, and more. Optimal — Time O(n), Space O(1).
Sliding Window approach. Optimal — Time O(n), Space O(1).
Covers: Btute Force, Optimal - Sliding Window. Optimal — Time O(n), Space O(1).
PrefixSum + Hashmap approach. Optimal — Time O(n), Space O(n).
Covers: Prefixsum + Hashmap, Sliding window. Optimal — Time O(n), Space O(1).
Optimal approach. Optimal — Time O(n), Space O(1).
Covers: Brute Force, Sliding Window. Optimal — Time O(n), Space O(1).
Covers: Brute Force, Prefix Sum, Optimal Single-Pass. Best — Time O(n), Space O(n).