Valid Parentheses

valid-parentheses

Word Break

word-break

Is Subsequence

is-subsequence

Split Array Largest Sum

split-array-largest-sum

Reconstruct Original Digits from English

reconstruct-original-digits-from-english

Predict the Winner

predict-the-winner

Beautiful Arrangement

beautiful-arrangement

Asteroid Collision

asteroid-collision

Capacity To Ship Packages Within D Days

capacity-to-ship-packages-within-d-days

Longest Substring Without Repeating Characters

longest-substring-without-repeating-characters

Longest Palindromic Substring

longest-palindromic-substring

First Missing Positive

first-missing-positive

Merge Intervals

merge-intervals

Decode Ways

decode-ways

Binary Tree Right Side View

binary-tree-right-side-view

Product of Array Except Self

product-of-array-except-self

Nested List Weight Sum

nested-list-weight-sum

Russian Doll Envelopes

russian-doll-envelopes

Non-overlapping Intervals

non-overlapping-intervals

Koko Eating Bananas

koko-eating-bananas

Rotting Oranges

rotting-oranges

Two Sum

two-sum

Palindrome Number

palindrome-number

Longest Common Prefix

longest-common-prefix

3Sum

3sum

Remove Nth Node From End of List

remove-nth-node-from-end-of-list

Generate Parentheses

generate-parentheses

Merge k Sorted Lists

merge-k-sorted-lists

Search in Rotated Sorted Array

search-in-rotated-sorted-array

Sudoku Solver

sudoku-solver

Combination Sum

combination-sum

Trapping Rain Water

trapping-rain-water

Wildcard Matching

wildcard-matching

Jump Game II

jump-game-ii

Permutations

permutations

Group Anagrams

group-anagrams

Maximum Subarray

maximum-subarray

Jump Game

jump-game

Unique Paths

unique-paths

Unique Paths II

unique-paths-ii

Search a 2D Matrix

search-a-2d-matrix

Sort Colors

sort-colors

Largest Rectangle in Histogram

largest-rectangle-in-histogram

Merge Sorted Array

merge-sorted-array

Validate Binary Search Tree

validate-binary-search-tree

Recover Binary Search Tree

recover-binary-search-tree

Binary Tree Zigzag Level Order Traversal

binary-tree-zigzag-level-order-traversal

Flatten Binary Tree to Linked List

flatten-binary-tree-to-linked-list

Best Time to Buy and Sell Stock

best-time-to-buy-and-sell-stock

Best Time to Buy and Sell Stock II

best-time-to-buy-and-sell-stock-ii

Word Ladder

word-ladder

Longest Consecutive Sequence

longest-consecutive-sequence

Clone Graph

clone-graph

Linked List Cycle

linked-list-cycle

LRU Cache

lru-cache

Reverse Words in a String

reverse-words-in-a-string

Min Stack

min-stack

Compare Version Numbers

compare-version-numbers

Binary Search Tree Iterator

binary-search-tree-iterator

Largest Number

largest-number

Rotate Array

rotate-array

Number of Islands

number-of-islands

Isomorphic Strings

isomorphic-strings

Course Schedule

course-schedule

Course Schedule II

course-schedule-ii

Word Search II

word-search-ii

Kth Largest Element in an Array

kth-largest-element-in-an-array

Maximal Square

maximal-square

Lowest Common Ancestor of a Binary Tree

lowest-common-ancestor-of-a-binary-tree

Sliding Window Maximum

sliding-window-maximum

Shortest Word Distance

shortest-word-distance

Meeting Rooms II

meeting-rooms-ii

Missing Number

missing-number

Integer to English Words

integer-to-english-words

Move Zeroes

move-zeroes

Find Median from Data Stream

find-median-from-data-stream

Longest Increasing Subsequence

longest-increasing-subsequence

Best Time to Buy and Sell Stock with Cooldown

best-time-to-buy-and-sell-stock-with-cooldown

Remove Duplicate Letters

remove-duplicate-letters

Flatten Nested List Iterator

flatten-nested-list-iterator

Top K Frequent Elements

top-k-frequent-elements

Decode String

decode-string

Frog Jump

frog-jump

Pacific Atlantic Water Flow

pacific-atlantic-water-flow

Arranging Coins

arranging-coins

Repeated Substring Pattern

repeated-substring-pattern

LFU Cache

lfu-cache

Next Greater Element III

next-greater-element-iii

Design In-Memory File System

design-in-memory-file-system

Task Scheduler

task-scheduler

Maximum Product of Three Numbers

maximum-product-of-three-numbers

Exclusive Time of Functions

exclusive-time-of-functions

Valid Parenthesis String

valid-parenthesis-string

Stickers to Spell Word

stickers-to-spell-word

Max Area of Island

max-area-of-island

Count Binary Substrings

count-binary-substrings

Degree of an Array

degree-of-an-array

Find Pivot Index

find-pivot-index

Flood Fill

flood-fill

Daily Temperatures

daily-temperatures

Design HashMap

design-hashmap

Salesforce

#	Title	Difficulty	Frequency
20	Valid Parentheses	Easy	0.37
139	Word Break	Medium	80.25
392	Is Subsequence	Easy	1.24
410	Split Array Largest Sum	Hard	21.33
423	Reconstruct Original Digits from English	Medium	51.08
486	Predict the Winner	Medium	7.89
502	IPO	Hard	16.85
526	Beautiful Arrangement	Medium	50.50
735	Asteroid Collision	Medium	2.36
1011	Capacity To Ship Packages Within D Days	Medium	18.66