Prefix Sum Pattern for Coding Interviews: 2026 Guide
Master the prefix sum pattern for coding interviews: range queries, prefix sum + hash map, difference arrays, Java code and a 7-day practice plan.
Posted inCoding Interview Walkthroughs
Trie Pattern for Coding Interviews in 2026
Master the Trie data structure for coding interviews in 2026 - implementation, key LeetCode problems, and when to use it over a hash map.
Posted inCoding Interview Walkthroughs
Graph BFS and DFS Patterns for Coding Interviews in 2026
Master BFS and DFS graph patterns for 2026 coding interviews. Learn when to use each, the five core patterns, and a two-week practice roadmap.
Two Pointers Pattern for Coding Interviews 2026
Master the two pointers pattern: converging, fast/slow, and two-sequence variants with Java examples and a 10-problem practice set.
Posted inInterview Preparation
Coding Interview Prep in 2 Weeks: A 2026 Study Plan
A realistic 14-day coding interview study plan for 2026: daily LeetCode targets, the core patterns that matter, and mock interview tips to prep fast.