ShardUp

Practice

ShardUp DSA Practice Sheet

Leaderboard

Score
#1Babu Rao87
#2Nitish Dwivedi43
#3Atique Ahmad35
#4Abhinav28
#5Jiya Jaiswal23
#6Suvojit Ghosh19
#7Ritvik Mukherjee17
#8Julia Maddu16
#9Navneet Anand15
#10Kunal Roy9

Week 1

Best Time to Buy and Sell Stock
EasyArrayGreedy14 accepted
Insert Interval
MediumArrayIntervals5 accepted
3Sum
MediumArrayTwo Pointers7 accepted
Product of Array Except Self
MediumArrayPrefix Product6 accepted
Combination Sum
MediumArrayBacktracking5 accepted
Merge Intervals
MediumArrayIntervals4 accepted
Majority Element
EasyArrayVoting9 accepted
Sort Colors
MediumArrayTwo Pointers4 accepted
Contains Duplicate
EasyArrayHash Table12 accepted
Container With Most Water
MediumArrayTwo Pointers5 accepted
Meeting Rooms
EasyArrayIntervals5 accepted
Gas Station
MediumArrayGreedy1 accepted
Longest Consecutive Sequence
MediumArrayHash Table4 accepted
Rotate Array
MediumArrayTwo Pointers5 accepted

Week 2

Contiguous Array
MediumArrayHash Table4 accepted
Subarray Sum Equals K
MediumArrayHash Table3 accepted
Employee Free Time
HardArrayIntervals1 accepted
Move Zeroes
EasyArrayTwo Pointers6 accepted
Meeting Rooms II
MediumArrayIntervals1 accepted
Sliding Window Maximum
HardArrayQueue2 accepted
Squares of a Sorted Array
EasyArrayTwo Pointers5 accepted
3Sum Closest
MediumArrayTwo Pointers1 accepted
Non-overlapping Intervals
MediumArrayIntervals1 accepted
Valid Palindrome
EasyStringTwo Pointers3 accepted
Valid Anagram
EasyStringHash Table3 accepted
Longest Substring Without Repeating Characters
MediumStringSliding Window1 accepted
Longest Palindrome
EasyStringHash Table2 accepted

Week 3

Minimum Window Substring
HardStringSliding Window1 accepted
String to Integer (atoi)
MediumStringParsing1 accepted
Longest Palindromic Substring
MediumStringPalindrome0 accepted
Find All Anagrams in a String
MediumStringSliding Window0 accepted
Group Anagrams
MediumArrayHash Table2 accepted
Longest Repeating Character Replacement
MediumStringSliding Window0 accepted
Longest Common Prefix
EasyStringTrie6 accepted
Largest Number
MediumArrayString0 accepted
Encode and Decode Strings
MediumStringDesign0 accepted
Palindrome Pairs
HardArrayHash Table1 accepted
Valid Parentheses
EasyStringStack1 accepted
Min Stack
MediumStackDesign0 accepted

Week 4

Evaluate Reverse Polish Notation
MediumStackMath0 accepted
Daily Temperatures
MediumArrayStack0 accepted
Spiral Matrix
MediumArrayMatrix0 accepted
Valid Sudoku
MediumArrayMatrix0 accepted
Rotate Image
MediumArrayMatrix0 accepted
Set Matrix Zeroes
MediumArrayMatrix0 accepted
Sudoku Solver
HardArrayMatrix0 accepted
Binary Search
EasyArrayBinary Search1 accepted
First Bad Version
EasyBinary SearchAmazon1 accepted
Search in Rotated Sorted Array
MediumArrayBinary Search0 accepted
Time Based Key-Value Store
MediumBinary SearchHash Table0 accepted
Maximum Profit in Job Scheduling
HardArrayBinary Search0 accepted

Week 5

Median of Two Sorted Arrays
HardArrayBinary Search0 accepted
Search a 2D Matrix
MediumArrayMatrix1 accepted
Find Minimum in Rotated Sorted Array
MediumArrayBinary Search1 accepted
Koko Eating Bananas
MediumArrayBinary Search0 accepted
E2E Sum Two Numbers
EasyMathWarm-up0 accepted

Contest Questions

📌Sum Two Numbers
EasyMathWarm-up18 accepted
Two Sum
EasyArrayHash Table11 accepted
Battery Reset Counter
EasyArraySimulation1 accepted
Divisible Pair Count
EasyArrayHash Table1 accepted
Service Call Profiler
EasyStackSimulation0 accepted
Driver Rebalancing Across City Corridors
MediumArrayPrefix Sum0 accepted
Guarded Vault Heist
MediumArrayDynamic Programming0 accepted
Uniform Cohort Batches
MediumArraySorting0 accepted
Best Dispatch Hub
HardTreeDynamic Programming0 accepted
Stable Trading Windows
HardArraySliding Window0 accepted
Subarray Sum In Range
HardArrayPrefix Sum0 accepted