Browse LeetCode problems frequently asked by Instacart. Filter by difficulty and timeframe to focus your interview prep.
Last updated: 20 Feb 2026
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30 days
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All
Easy
Medium
Hard
All
Problem
Difficulty
Frequency
Topics
Check if Every Row and Column Contains All Numbers
EASY
100%
ArrayHash TableMatrix
Squares of a Sorted Array
EASY
87.5%
ArrayTwo PointersSorting
Time Based Key-Value Store
MEDIUM
87.5%
Hash TableStringBinary SearchDesign
Maximum Number of Events That Can Be Attended
MEDIUM
62.5%
ArrayGreedySortingHeap (Priority Queue)
Find First and Last Position of Element in Sorted Array
MEDIUM
100%
ArrayBinary Search
Valid Sudoku
MEDIUM
62.5%
ArrayHash TableMatrix
Wildcard Matching
HARD
75%
StringDynamic ProgrammingGreedyRecursion
Average Waiting Time
MEDIUM
87.5%
ArraySimulation
Find the Length of the Longest Common Prefix
MEDIUM
75%
ArrayHash TableStringTrie
Simple Bank System
MEDIUM
62.5%
ArrayHash TableDesignSimulation
Group Anagrams
MEDIUM
62.5%
ArrayHash TableStringSorting
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