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 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.
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.
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.
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 inCoding Interview Walkthroughs
Graph BFS and DFS Patterns for Coding Interviews 2026
Master BFS and DFS graph patterns for coding interviews: when to use each, Java templates, cycle detection, and a 7-day LeetCode practice plan for 2026.
Posted inCoding Interview Walkthroughs
Master the Two Pointers Pattern for Coding Interviews
Learn the two pointers technique with clear Java examples, when to use it, and the four interview patterns that turn O(n²) brute force into O(n).