Topological Sort Pattern for Coding Interviews 2026
Master the Topological Sort pattern: spot the hidden DAG, memorize the Kahn’s algorithm Java template, and get cycle detection free. 4 classic problems.
Merge Intervals Pattern for Coding Interviews 2026
Master the Merge Intervals pattern: the sorting insight, a clean Java template, and the 5 classic problems that cover almost every interval question.
Posted inBlog
Union-Find Pattern for Coding Interviews: 2026 Guide
Master the Union-Find (Disjoint Set Union) pattern for coding interviews. Learn path compression, union by rank, Java implementation, and solve top problems like connected components, redundant connection, and accounts merge.
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 inBlog
Two Pointers Pattern for Coding Interviews 2026
Master the two pointers coding interview pattern with Java templates, worked examples, and a 7-day practice plan. Covers opposite-direction, fast/slow, and linked list pointer techniques for 2026 interviews.
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.
Posted inCoding Interview Walkthroughs
Monotonic Stack Pattern for Coding Interviews in 2026
Learn the monotonic stack pattern to solve next-greater-element, daily temperatures, and largest-rectangle interview problems in O(n). Worked Java examples for 2026.
Dynamic Programming Patterns for Coding Interviews 2026
Master dynamic programming for coding interviews in 2026 with the FAST framework, memoization vs tabulation, the core DP patterns, and a two-week prep plan.
Posted inBlog
Heap and Top-K Patterns for Coding Interviews in 2026
If you've been preparing for coding interviews in 2026, you already know that heap-based problems are among the most frequently tested patterns at top tech companies. Google, Amazon, Meta, Microsoft…
Backtracking Pattern for Coding Interviews in 2026
Master the backtracking pattern for coding interviews: the choose-explore-undo template, 6 must-know LeetCode problems, and a 5-day practice plan.