Categories-Question
Mar2ndx's Tech Blog
[Question] ASCII, Utf-8, Utf-16 and Unicode
Oct 29 · 3 min
[Facebook] Query Search (HashMap, suffix array)
Oct 29 · 2 min
[Question] Find row with most 1s
Oct 29 · 1 min
[Question] Most Frequent Word from a book
Oct 29 · 1 min
[Greedy] Activity Selection Problem
Oct 29 · 1 min
[Greedy] Each Employee 2 events
Oct 29 · 1 min
[Amazon] Grep command interview question
Oct 29 · 1 min
[Palantir] MultiMap in Java without using Collections
Oct 29 · 1 min
[Amazon] Mininum Range that includes at least One
Oct 29 · 2 min
[Question] Find Min & Max in an Array Using Minimum Comparisons
Oct 29 · 1 min
[Question] Axis Aligned Rectangles
Oct 29 · 1 min
[Question] Check string with no common letters (Bitmask)
Oct 29 · 1 min
[Question] Number Of Bus Stations (meeting rooms)
Oct 29 · 2 min
[Question] Random Number Generate Question
Oct 29 · 1 min
[Question] Packing Rectangles
Oct 29 · 7 min
[Question] Peripheral Of A Complete Tree
Oct 29 · 1 min
[Question] Square Count of Matchstick Graph
Oct 29 · 1 min
[Question] Check if given point inside polygon
Oct 29 · 1 min
[Question] Count Arithmetic Slices
May 22 · 1 min
[Question] Shuffle and Get Max Difference
May 22 · 1 min
[Amazon] Infix to Postfix conversion
May 22 · 2 min
[Question] Get Max Number Game (minmax + dp)
May 22 · 3 min
[Question] Insert Plus and Minus to Complete Expression
May 22 · 2 min
[Question] Junit Hand-on Notes
May 22 · 4 min
[Question] First Character Appearing Only Once
May 22 · 1 min
[Question] Compare Mergesort and Quicksort
May 22 · 1 min
[Question] Search Range in BST (Trim a BST)
May 22 · 1 min
[Question] Count negative in a 2D Sorted Matrix
May 22 · 1 min
[Question] Iterator of Binary Search Tree
May 22 · 1 min
[Question] Binary Search Tree find upper/lower bound
May 22 · 1 min
[Question] Union and Intersection of two Linked Lists
May 22 · 1 min
[Question] Number Sum Sequence
May 22 · 1 min
[Brain teaser] 2 Eggs 100 Floors Puzzle
May 22 · 1 min
[Brain teaser] Khan Academy 8 brain teasers
May 22 · 14 min
[Question] Topology Sort
May 22 · 4 min
[Question] Single Number III
May 22 · 2 min
[Question] Single Number IV
May 22 · 2 min
[Question] Coin Change Problem
May 22 · 3 min
[Question] Make a fair coin from a biased coin
May 22 · 1 min
[Question] 0-1 Knapsack Problem
May 22 · 2 min
[Question] Implement a HashMap
May 22 · 5 min
[Question] Implement Queue using Stacks
May 22 · 1 min
[Question] Median in a stream of integers
May 22 · 1 min
[Question] Min Stack
May 22 · 1 min
[Question] The Skyline Problem
May 22 · 2 min
[Question] Check Power of 2
May 22 · 1 min
[Question] Subarray with 0 Sum
May 22 · 1 min
[Question] Subarray with Particular Sum
May 22 · 1 min
[Question] Subarray with Sum Closest
May 22 · 1 min
[Question] Longest Substring with At Most Two Distinct Characters
May 22 · 2 min
[Question] Quick Sort
May 22 · 1 min
[Question] Max Binary Gap
May 22 · 1 min
[Question] Bucket Sort (bin sort)
May 22 · 1 min
[Question] Largest palindrome product
May 22 · 2 min
[Question] Least Number after Deleting Digits
May 22 · 1 min
[Question] Implement Stack using Two Queues
May 22 · 2 min
[Question] Find the first non-repeating character
May 22 · 1 min
[Question] Find 10001st Prime (Sieve of E)
May 22 · 1 min
[Question] Truth tell brain teaser
May 22 · 1 min
[Question] Elephant And Bananas
May 22 · 1 min
[Question] Fit 1*2 Dominos In 2*N Strip
May 22 · 1 min
[Question] Reconstruct Tree From Pre-Order Traversal
May 22 · 1 min
[Question] Breaking Chocolate Bars
May 22 · 1 min
[Question] Check If Number Exists
May 22 · 1 min
[Question] Matching Nuts And Bolts
May 22 · 1 min
[Question] Construct a BST from Preorder Traversal
May 22 · 1 min
[Question] Remove chars in Pairs
May 22 · 1 min
[Question] Which loop is faster
May 22 · 1 min
[Question] Nth Fibonacci Number In O(LogN)
May 22 · 1 min
[Question] Points On Globe Puzzle
May 22 · 1 min
[Question] Inorder Successor in Binary Search Tree
May 22 · 1 min
[Question] Run-Length Encoding
May 22 · 1 min
[Question] Arranging Sequence
May 22 · 2 min
[Question] Max Sum In A 2D Array (sub-matrix)
May 22 · 1 min
[Question] Overriding private method
May 22 · 1 min
[Question] Shuffle An Array (Fisher–Yates)
May 22 · 2 min
[Question] Print Numbers containing 5
May 22 · 1 min
[Question] Add Integers without +/++
May 22 · 1 min
[Question] Decimal to Hexadecimal
May 22 · 1 min
[Question] Max Sum Of Non-Consecutive Elements
May 22 · 1 min
[ItInt5] Maximum circular subarray sum
May 22 · 1 min
[Question] Greatest Common Divisor
May 22 · 1 min
[ItInt5] 跳马问题加强版
May 22 · 2 min
[Facebook] Task Scheduling Question
May 22 · 3 min
[ItInt5] Excel Decimal Conversion
May 22 · 1 min
[Twitter] Arithmetic Expression Evaluation
May 22 · 1 min
[ItInt5] Number of Valid Trees Given Preorder and Postorder
May 22 · 1 min
[ItInt5] Numbers Concatenation Max (Largest Number)
May 22 · 1 min
[Question] Count Level in Perfect Binary Tree
May 22 · 1 min
[Question] Count Set Bit in Binary Number
May 22 · 1 min
[Question] Ways of Dice Throw
May 22 · 1 min
[Twitter] Count Visible Nodes in Binary Tree
May 22 · 1 min
[Question] Duplicate Rows in Matrix
May 22 · 2 min
[Twitter] Largest Cycle in Permutation
May 22 · 1 min
[Facebook] Hamming Distance of Array
May 22 · 1 min
[Question] Celebrity Problem
May 22 · 1 min
[Question] Interleave Positive and Negative Numbers
May 22 · 2 min
[Question] Multiples of 3 and 5
May 22 · 1 min
[Epic] Patient Disease Data Structure
May 22 · 1 min
[Facebook] Print a Binary Tree in Vertical Order
May 22 · 1 min
[Question] Equilibrium Points in 2D Array
May 22 · 1 min
[Facebook] Binary Search Tree 3Sum
May 22 · 2 min
[Facebook] Maximum sum such that no two elements are adjacent
May 22 · 1 min
[Question] Split an integer or coin
May 22 · 1 min
[Question] Frog Crossing (dynamic programming)
May 22 · 2 min
[Facebook] Write a Json prettifier
May 22 · 3 min
[Question] Longest Common Substring
May 22 · 1 min
[Facebook] Scheduling Jobs with Max Cost
May 22 · 2 min
[Amazon] Match triplet with reverse order
May 22 · 1 min
[Question] All distinct subsequences with given length
May 22 · 2 min
[LinkedIn] Find all repeating substring with given length
May 22 · 1 min
[Amazon] Longest Repeating Substring
May 22 · 1 min
[Question] Number of distinct sub-sequence
May 22 · 2 min
[Question] Number of occurence of given sub-sequence
May 22 · 1 min
[Amazon] Find nodes of distance k from Binary Tree
May 22 · 1 min
[Amazon] Lexicographic rank of a string
May 22 · 1 min
[Question] Maximum square sub-matrix with all 1s
May 22 · 1 min
[Question] Check if two line segments intersect
May 22 · 2 min
[Palantir] Largest basin size in matrix
May 22 · 9 min
[Question] Push and Pop Sequences of Stacks
May 22 · 1 min
[Question] Two Dimensional Knapsack Problem
May 22 · 3 min
[Apple] Calculate Area
May 22 · 1 min
[Question] Product Array Puzzle
May 22 · 1 min
[Question] 2D Bin Packing
May 22 · 1 min
[Question] Stock Span Problem (couting BST)
May 22 · 2 min
[Question] Reservoir sampling
May 22 · 1 min
[Facebook] Generate number with Given probability
May 22 · 1 min
[Question] Count multiples of array
May 22 · 1 min
[LinkedIn] Isomorphic Strings
May 22 · 2 min
[LinkedIn] Executive's Schedule
May 22 · 1 min
[LinkedIn] Sum of integer weighted by depth
May 22 · 2 min
[LinkedIn] Unique combination of factors (因式分解)
May 22 · 1 min
[LinkedIn] Sort part to make entire array sorted
May 22 · 1 min
[Palantir] Find Duplicate within K Distance
May 22 · 1 min
[Question] 编程之美 NIM 一排石头的游戏
May 22 · 1 min
[UVa] Wooden Sticks
May 22 · 3 min
[Palantir] Sort Letters Given Lexicographic Order
May 22 · 1 min
[Amazon] All Strings by Placing Spaces
May 22 · 1 min
[Question] Find Cloest Leaf in Binary Tree
May 22 · 2 min
[Question] Largest Sub-square with Edges filled
May 22 · 4 min
[Question] Partition Problem (divide array into halves)
May 22 · 1 min
[Question] Swizzle Sort
May 22 · 1 min
[Question] Dutch national flag problem
May 22 · 1 min
[Question] Trie Wildcard String Matching
May 22 · 1 min