Sliding Window1 article

Sliding Window

Sliding window tracks a contiguous range that expands and contracts. The key interview signal: "find the optimal subarray/substring."

Sliding window: keep a chunk, slide the edges

Contiguous subarrays and substrings where you update state in O(1) per move. Fixed vs variable shapes, the expand-shrink-update template, RFCs and production rate limiters that use the same idea.

Fin · Apr 17, 2026

Practice Sliding Window problems

Analytics: Longest Unique Session WindowM Longest Repeating Character ReplacementM Best Time to Buy and Sell StockE Minimum Window SubstringH

All Sliding Window problems