Posted inCoding Interviews
Binary Search Interview Patterns for 2026
Master binary search for coding interviews: 4 core patterns, a reusable template, and common off-by-one traps with examples.
Graph BFS vs DFS for Coding Interviews: 2026
Master BFS and DFS for coding interviews with reusable templates and worked solutions for Number of Islands, Rotting Oranges and Course Schedule.
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.
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
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.