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dsa2 min read

Determine if there exists an increasing subsequence of length 3 using two greedy variables in O(n) time O(1) space.

March 19, 2026Read →

dsa2 min read

Find all unique quadruplets summing to target by extending the 3Sum pattern with an outer loop and duplicate skipping.

March 19, 2026Read →

dsa2 min read

Find minimum number of jumps to reach the last index using greedy BFS-style level tracking.

March 19, 2026Read →

dsa2 min read

Determine the unique starting gas station for a circular route using a greedy one-pass algorithm.

March 19, 2026Read →

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Find how many days until a warmer temperature for each day using a monotonic decreasing stack.

March 19, 2026Read →

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