https://ritwikshaw.xyz/ https://ritwikshaw.xyz/problems/ https://ritwikshaw.xyz/playground/ https://ritwikshaw.xyz/patterns/ https://ritwikshaw.xyz/patterns/trainer/ https://ritwikshaw.xyz/system-design/ https://ritwikshaw.xyz/low-level-design/ https://ritwikshaw.xyz/low-level-design/introduction/what-is-lld/ https://ritwikshaw.xyz/low-level-design/introduction/lld-vs-hld/ https://ritwikshaw.xyz/low-level-design/introduction/learning-roadmap/ https://ritwikshaw.xyz/low-level-design/introduction/interview-formats/ https://ritwikshaw.xyz/low-level-design/introduction/design-patterns-introduction/ https://ritwikshaw.xyz/low-level-design/oop/classes-and-objects/ https://ritwikshaw.xyz/low-level-design/oop/enums/ https://ritwikshaw.xyz/low-level-design/oop/interfaces/ https://ritwikshaw.xyz/low-level-design/oop/encapsulation/ https://ritwikshaw.xyz/low-level-design/oop/abstraction/ https://ritwikshaw.xyz/low-level-design/oop/inheritance/ https://ritwikshaw.xyz/low-level-design/oop/polymorphism/ https://ritwikshaw.xyz/low-level-design/relationships/association/ https://ritwikshaw.xyz/low-level-design/relationships/aggregation/ https://ritwikshaw.xyz/low-level-design/relationships/composition/ https://ritwikshaw.xyz/low-level-design/relationships/dependency/ https://ritwikshaw.xyz/low-level-design/relationships/realization/ https://ritwikshaw.xyz/low-level-design/principles/dry/ https://ritwikshaw.xyz/low-level-design/principles/kiss/ https://ritwikshaw.xyz/low-level-design/principles/yagni/ https://ritwikshaw.xyz/low-level-design/principles/law-of-demeter/ https://ritwikshaw.xyz/low-level-design/principles/separation-of-concerns/ https://ritwikshaw.xyz/low-level-design/principles/coupling-and-cohesion/ https://ritwikshaw.xyz/low-level-design/principles/composition-over-inheritance/ https://ritwikshaw.xyz/low-level-design/solid/single-responsibility/ https://ritwikshaw.xyz/low-level-design/solid/open-closed/ https://ritwikshaw.xyz/low-level-design/solid/liskov-substitution/ https://ritwikshaw.xyz/low-level-design/solid/interface-segregation/ https://ritwikshaw.xyz/low-level-design/solid/dependency-inversion/ https://ritwikshaw.xyz/low-level-design/uml/class-diagram/ https://ritwikshaw.xyz/low-level-design/uml/use-case-diagram/ https://ritwikshaw.xyz/low-level-design/uml/sequence-diagram/ https://ritwikshaw.xyz/low-level-design/uml/activity-diagram/ https://ritwikshaw.xyz/low-level-design/uml/state-machine-diagram/ https://ritwikshaw.xyz/low-level-design/creational/singleton/ https://ritwikshaw.xyz/low-level-design/creational/factory-method/ https://ritwikshaw.xyz/low-level-design/creational/abstract-factory/ https://ritwikshaw.xyz/low-level-design/creational/builder/ https://ritwikshaw.xyz/low-level-design/creational/prototype/ https://ritwikshaw.xyz/low-level-design/structural/adapter/ https://ritwikshaw.xyz/low-level-design/structural/facade/ https://ritwikshaw.xyz/low-level-design/structural/decorator/ https://ritwikshaw.xyz/low-level-design/structural/composite/ https://ritwikshaw.xyz/low-level-design/structural/proxy/ https://ritwikshaw.xyz/low-level-design/structural/bridge/ https://ritwikshaw.xyz/low-level-design/structural/flyweight/ https://ritwikshaw.xyz/low-level-design/behavioral/strategy/ https://ritwikshaw.xyz/low-level-design/behavioral/iterator/ https://ritwikshaw.xyz/low-level-design/behavioral/observer/ https://ritwikshaw.xyz/low-level-design/behavioral/command/ https://ritwikshaw.xyz/low-level-design/behavioral/state/ https://ritwikshaw.xyz/low-level-design/behavioral/template-method/ https://ritwikshaw.xyz/low-level-design/behavioral/chain-of-responsibility/ https://ritwikshaw.xyz/low-level-design/behavioral/visitor/ https://ritwikshaw.xyz/low-level-design/behavioral/mediator/ https://ritwikshaw.xyz/low-level-design/behavioral/memento/ https://ritwikshaw.xyz/low-level-design/behavioral/interpreter/ https://ritwikshaw.xyz/low-level-design/interview/object-oriented-design-interviews/ https://ritwikshaw.xyz/low-level-design/interview/machine-coding-interviews/ https://ritwikshaw.xyz/low-level-design/interview/entity-identification/ https://ritwikshaw.xyz/low-level-design/interview/clean-code/ https://ritwikshaw.xyz/low-level-design/interview/pattern-selection/ https://ritwikshaw.xyz/low-level-design/interview/concurrency-reasoning/ https://ritwikshaw.xyz/low-level-design/case-studies/parking-lot/ https://ritwikshaw.xyz/low-level-design/case-studies/vending-machine/ https://ritwikshaw.xyz/low-level-design/case-studies/notification-service/ https://ritwikshaw.xyz/privacy/ https://ritwikshaw.xyz/terms/ https://ritwikshaw.xyz/learn/1/ https://ritwikshaw.xyz/learn/2/ https://ritwikshaw.xyz/learn/3/ https://ritwikshaw.xyz/learn/4/ https://ritwikshaw.xyz/learn/5/ https://ritwikshaw.xyz/topics/arrays/ https://ritwikshaw.xyz/topics/strings/ https://ritwikshaw.xyz/topics/hashmap/ https://ritwikshaw.xyz/topics/hashset/ https://ritwikshaw.xyz/topics/two-pointers/ https://ritwikshaw.xyz/topics/sliding-window/ https://ritwikshaw.xyz/topics/prefix-sum/ https://ritwikshaw.xyz/topics/sorting/ https://ritwikshaw.xyz/topics/binary-search/ https://ritwikshaw.xyz/topics/linked-list/ https://ritwikshaw.xyz/topics/stack/ https://ritwikshaw.xyz/topics/queue/ https://ritwikshaw.xyz/topics/deque/ https://ritwikshaw.xyz/topics/recursion/ https://ritwikshaw.xyz/topics/backtracking/ https://ritwikshaw.xyz/topics/fast-slow-pointers/ https://ritwikshaw.xyz/topics/trees/ https://ritwikshaw.xyz/topics/binary-search-tree/ https://ritwikshaw.xyz/topics/heap-priority-queue/ https://ritwikshaw.xyz/topics/trie/ https://ritwikshaw.xyz/topics/graphs/ https://ritwikshaw.xyz/topics/dfs/ https://ritwikshaw.xyz/topics/bfs/ https://ritwikshaw.xyz/topics/topological-sort/ https://ritwikshaw.xyz/topics/union-find/ https://ritwikshaw.xyz/topics/dijkstra/ https://ritwikshaw.xyz/topics/shortest-path/ https://ritwikshaw.xyz/topics/dynamic-programming/ https://ritwikshaw.xyz/topics/greedy/ https://ritwikshaw.xyz/topics/intervals/ https://ritwikshaw.xyz/topics/bit-manipulation/ https://ritwikshaw.xyz/problems/longest-substring/ https://ritwikshaw.xyz/problems/two-sum/ https://ritwikshaw.xyz/problems/binary-search/ https://ritwikshaw.xyz/problems/valid-parentheses/ https://ritwikshaw.xyz/problems/reverse-linked-list/ https://ritwikshaw.xyz/problems/tree-maximum-depth/ https://ritwikshaw.xyz/problems/number-of-islands/ https://ritwikshaw.xyz/problems/coin-change/ https://ritwikshaw.xyz/problems/valid-palindrome/ https://ritwikshaw.xyz/problems/move-zeroes/ https://ritwikshaw.xyz/problems/range-sum-query/ https://ritwikshaw.xyz/problems/daily-temperatures/ https://ritwikshaw.xyz/problems/generate-parentheses/ https://ritwikshaw.xyz/problems/subsets/ https://ritwikshaw.xyz/problems/binary-tree-inorder/ https://ritwikshaw.xyz/problems/validate-bst/ https://ritwikshaw.xyz/problems/kth-largest/ https://ritwikshaw.xyz/problems/graph-path/ https://ritwikshaw.xyz/problems/course-schedule/ https://ritwikshaw.xyz/problems/shortest-grid-path/ https://ritwikshaw.xyz/problems/climbing-stairs/ https://ritwikshaw.xyz/problems/house-robber/ https://ritwikshaw.xyz/problems/merge-intervals/ https://ritwikshaw.xyz/problems/single-number/ https://ritwikshaw.xyz/problems/contains-duplicate/ https://ritwikshaw.xyz/problems/valid-anagram/ https://ritwikshaw.xyz/problems/container-most-water/ https://ritwikshaw.xyz/problems/maximum-sum-window/ https://ritwikshaw.xyz/problems/pivot-index/ https://ritwikshaw.xyz/problems/search-insert-position/ https://ritwikshaw.xyz/problems/next-greater-element/ https://ritwikshaw.xyz/problems/permutations/ https://ritwikshaw.xyz/problems/counting-bits/ https://ritwikshaw.xyz/problems/jump-game/ https://ritwikshaw.xyz/problems/longest-increasing-subsequence/ https://ritwikshaw.xyz/problems/insertion-sort/ https://ritwikshaw.xyz/problems/sorted-squares/ https://ritwikshaw.xyz/problems/minimum-size-subarray/ https://ritwikshaw.xyz/problems/subarray-sum-k/ https://ritwikshaw.xyz/problems/longest-consecutive/ https://ritwikshaw.xyz/problems/search-rotated-array/ https://ritwikshaw.xyz/problems/simplify-path/ https://ritwikshaw.xyz/problems/combination-sum/ https://ritwikshaw.xyz/problems/unique-paths/ https://ritwikshaw.xyz/problems/non-overlapping-intervals/ https://ritwikshaw.xyz/problems/happy-number/ https://ritwikshaw.xyz/problems/connected-components/ https://ritwikshaw.xyz/problems/prefix-word-counts/ https://ritwikshaw.xyz/problems/network-delay/ https://ritwikshaw.xyz/problems/sliding-window-maximum/ https://ritwikshaw.xyz/problems/unweighted-distances/ https://ritwikshaw.xyz/system-design/core-concepts/consistent-hashing/ https://ritwikshaw.xyz/system-design/core-concepts/cap-theorem/ https://ritwikshaw.xyz/system-design/networking/osi-model/ https://ritwikshaw.xyz/system-design/networking/load-balancing/ https://ritwikshaw.xyz/system-design/api/api-gateway/ https://ritwikshaw.xyz/system-design/api/rate-limiting/ https://ritwikshaw.xyz/system-design/api/api-design/ https://ritwikshaw.xyz/system-design/database/acid-transactions/ https://ritwikshaw.xyz/system-design/caching/caching-strategies/ https://ritwikshaw.xyz/system-design/async/pub-sub/ https://ritwikshaw.xyz/system-design/async/message-queues/