Meta Interview Questions

Curated technical problems, DSA questions & coding interview rounds

Target Role

Software Engineer (SDE I / II)

Problem Count

100+ Verified

Assessment Type

DSA & System Design

Preparation Mode

Live AI Interactive

Minimum Remove to Make Valid Parentheses

MEDIUM

71% Acceptance100% Frequency

String

Stack

Valid Word Abbreviation

EASY

37% Acceptance95% Frequency

Two Pointers

String

Binary Tree Vertical Order Traversal

MEDIUM

57% Acceptance93% Frequency

Hash Table

Tree

Depth-First Search

Breadth-First Search

Sorting

+1 more

Valid Palindrome II

EASY

43% Acceptance93% Frequency

Two Pointers

String

Greedy

Lowest Common Ancestor of a Binary Tree III

MEDIUM

82% Acceptance90% Frequency

Hash Table

Two Pointers

Tree

Binary Tree

Kth Largest Element in an Array

MEDIUM

68% Acceptance87% Frequency

Array

Divide and Conquer

Sorting

Heap (Priority Queue)

Quickselect

Binary Tree Right Side View

MEDIUM

67% Acceptance86% Frequency

Tree

Depth-First Search

Breadth-First Search

Binary Tree

Basic Calculator II

MEDIUM

46% Acceptance84% Frequency

Math

String

Stack

Lowest Common Ancestor of a Binary Tree

MEDIUM

67% Acceptance83% Frequency

Tree

Depth-First Search

Binary Tree

Find Peak Element

MEDIUM

47% Acceptance83% Frequency

Array

Binary Search

Nested List Weight Sum

MEDIUM

86% Acceptance82% Frequency

Depth-First Search

Breadth-First Search

Random Pick with Weight

MEDIUM

48% Acceptance81% Frequency

Array

Math

Binary Search

Prefix Sum

Randomized

Sum Root to Leaf Numbers

MEDIUM

69% Acceptance81% Frequency

Tree

Depth-First Search

Binary Tree

Diameter of Binary Tree

EASY

64% Acceptance79% Frequency

Tree

Depth-First Search

Binary Tree

Top K Frequent Elements

MEDIUM

65% Acceptance78% Frequency

Array

Hash Table

Divide and Conquer

Sorting

Heap (Priority Queue)

+3 more

Merge Intervals

MEDIUM

49% Acceptance78% Frequency

Array

Sorting

Two Sum

EASY

56% Acceptance76% Frequency

Array

Hash Table

Best Time to Buy and Sell Stock

EASY

55% Acceptance76% Frequency

Array

Dynamic Programming

Merge k Sorted Lists

HARD

57% Acceptance76% Frequency

Linked List

Divide and Conquer

Heap (Priority Queue)

Merge Sort

Valid Parentheses

EASY

42% Acceptance75% Frequency

String

Stack

Pow(x, n)

MEDIUM

37% Acceptance75% Frequency

Math

Recursion

Buildings With an Ocean View

MEDIUM

81% Acceptance75% Frequency

Array

Stack

Monotonic Stack

Custom Sort String

MEDIUM

72% Acceptance73% Frequency

Hash Table

String

Sorting

K Closest Points to Origin

MEDIUM

68% Acceptance71% Frequency

Array

Math

Divide and Conquer

Geometry

Sorting

+2 more

Clone Graph

MEDIUM

62% Acceptance71% Frequency

Hash Table

Depth-First Search

Breadth-First Search

Graph

Subarray Sum Equals K

MEDIUM

45% Acceptance71% Frequency

Array

Hash Table

Prefix Sum

Range Sum of BST

EASY

87% Acceptance70% Frequency

Tree

Depth-First Search

Binary Search Tree

Binary Tree

Dot Product of Two Sparse Vectors

MEDIUM

90% Acceptance70% Frequency

Array

Hash Table

Two Pointers

Design

Valid Palindrome

EASY

51% Acceptance70% Frequency

Two Pointers

String

Next Permutation

MEDIUM

43% Acceptance67% Frequency

Array

Two Pointers

Shortest Path in Binary Matrix

MEDIUM

50% Acceptance67% Frequency

Array

Breadth-First Search

Matrix

Copy List with Random Pointer

MEDIUM

61% Acceptance67% Frequency

Hash Table

Linked List

Merge Sorted Array

EASY

53% Acceptance67% Frequency

Array

Two Pointers

Sorting

Sliding Window Median

HARD

39% Acceptance65% Frequency

Array

Hash Table

Sliding Window

Heap (Priority Queue)

Simplify Path

MEDIUM

48% Acceptance65% Frequency

String

Stack

Making A Large Island

HARD

55% Acceptance65% Frequency

Array

Depth-First Search

Breadth-First Search

Union Find

Matrix

Minimum Window Substring

HARD

45% Acceptance62% Frequency

Hash Table

String

Sliding Window

Accounts Merge

MEDIUM

60% Acceptance62% Frequency

Array

Hash Table

String

Depth-First Search

Breadth-First Search

+2 more

LRU Cache

MEDIUM

45% Acceptance62% Frequency

Hash Table

Linked List

Design

Doubly-Linked List

Max Consecutive Ones III

MEDIUM

66% Acceptance62% Frequency

Array

Binary Search

Sliding Window

Prefix Sum

Kth Missing Positive Number

EASY

62% Acceptance59% Frequency

Array

Binary Search

Find First and Last Position of Element in Sorted Array

MEDIUM

47% Acceptance59% Frequency

Array

Binary Search

Longest Common Prefix

EASY

45% Acceptance59% Frequency

String

Trie

Squares of a Sorted Array

EASY

73% Acceptance59% Frequency

Array

Two Pointers

Sorting

Remove Nth Node From End of List

MEDIUM

49% Acceptance56% Frequency

Linked List

Two Pointers

Diagonal Traverse

MEDIUM

63% Acceptance56% Frequency

Array

Matrix

Simulation

Missing Ranges

EASY

35% Acceptance56% Frequency

Array

Moving Average from Data Stream

EASY

80% Acceptance56% Frequency

Array

Design

Queue

Data Stream

Exclusive Time of Functions

MEDIUM

65% Acceptance56% Frequency

Array

Stack

Add Strings

EASY

52% Acceptance52% Frequency

Math

String

Simulation

Binary Search Tree Iterator

MEDIUM

75% Acceptance52% Frequency

Stack

Tree

Design

Binary Search Tree

Binary Tree

+1 more

Minimum Add to Make Parentheses Valid

MEDIUM

75% Acceptance52% Frequency

String

Stack

Greedy

Robot Room Cleaner

HARD

78% Acceptance52% Frequency

Backtracking

Interactive

Add Two Numbers

MEDIUM

46% Acceptance47% Frequency

Linked List

Math

Recursion

Subsets

MEDIUM

81% Acceptance47% Frequency

Array

Backtracking

Bit Manipulation

Remove Invalid Parentheses

HARD

49% Acceptance47% Frequency

String

Backtracking

Breadth-First Search

Palindromic Substrings

MEDIUM

72% Acceptance47% Frequency

Two Pointers

String

Dynamic Programming

Valid Number

HARD

22% Acceptance47% Frequency

String

Continuous Subarray Sum

MEDIUM

31% Acceptance47% Frequency

Array

Hash Table

Math

Prefix Sum

Closest Binary Search Tree Value

EASY

50% Acceptance47% Frequency

Binary Search

Tree

Depth-First Search

Binary Search Tree

Binary Tree

Vertical Order Traversal of a Binary Tree

HARD

51% Acceptance47% Frequency

Hash Table

Tree

Depth-First Search

Breadth-First Search

Sorting

+1 more

Group Shifted Strings

MEDIUM

67% Acceptance47% Frequency

Array

Hash Table

String

Course Schedule

MEDIUM

49% Acceptance47% Frequency

Depth-First Search

Breadth-First Search

Graph

Topological Sort

Insert into a Sorted Circular Linked List

MEDIUM

38% Acceptance47% Frequency

Linked List

3Sum

MEDIUM

37% Acceptance47% Frequency

Array

Two Pointers

Sorting

All Nodes Distance K in Binary Tree

MEDIUM

66% Acceptance47% Frequency

Hash Table

Tree

Depth-First Search

Breadth-First Search

Binary Tree

String to Integer (atoi)

MEDIUM

19% Acceptance41% Frequency

String

Contains Duplicate II

EASY

49% Acceptance41% Frequency

Array

Hash Table

Sliding Window

Zero Array Transformation III

MEDIUM

55% Acceptance41% Frequency

Array

Greedy

Sorting

Heap (Priority Queue)

Prefix Sum

Swim in Rising Water

HARD

63% Acceptance41% Frequency

Array

Binary Search

Depth-First Search

Breadth-First Search

Union Find

+2 more

Managers with at Least 5 Direct Reports

MEDIUM

49% Acceptance41% Frequency

Database

Maximum Swap

MEDIUM

52% Acceptance41% Frequency

Math

Greedy

Container With Most Water

MEDIUM

58% Acceptance41% Frequency

Array

Two Pointers

Greedy

Cutting Ribbons

MEDIUM

53% Acceptance41% Frequency

Array

Binary Search

Word Break

MEDIUM

48% Acceptance41% Frequency

Array

Hash Table

String

Dynamic Programming

Trie

+1 more

Binary Tree Maximum Path Sum

HARD

41% Acceptance41% Frequency

Dynamic Programming

Tree

Depth-First Search

Binary Tree

Car Pooling

MEDIUM

56% Acceptance41% Frequency

Array

Sorting

Heap (Priority Queue)

Simulation

Prefix Sum

Strobogrammatic Number

EASY

48% Acceptance41% Frequency

Hash Table

Two Pointers

String

Capacity To Ship Packages Within D Days

MEDIUM

72% Acceptance41% Frequency

Array

Binary Search

Longest Substring Without Repeating Characters

MEDIUM

37% Acceptance41% Frequency

Hash Table

String

Sliding Window

Word Ladder

HARD

43% Acceptance41% Frequency

Hash Table

String

Breadth-First Search

Find Median from Data Stream

HARD

53% Acceptance41% Frequency

Two Pointers

Design

Sorting

Heap (Priority Queue)

Data Stream

Valid Palindrome III

HARD

49% Acceptance41% Frequency

String

Dynamic Programming

Kth Smallest Element in a Sorted Matrix

MEDIUM

64% Acceptance41% Frequency

Array

Binary Search

Sorting

Heap (Priority Queue)

Matrix

Add Two Integers

EASY

88% Acceptance32% Frequency

Math

Shortest Path in a Hidden Grid

MEDIUM

44% Acceptance32% Frequency

Array

Depth-First Search

Breadth-First Search

Matrix

Interactive

Maximum Subarray

MEDIUM

52% Acceptance32% Frequency

Array

Divide and Conquer

Dynamic Programming

Interval List Intersections

MEDIUM

73% Acceptance32% Frequency

Array

Two Pointers

Line Sweep

Range Sum Query - Immutable

EASY

69% Acceptance32% Frequency

Array

Design

Prefix Sum

Frequency of the Most Frequent Element

MEDIUM

44% Acceptance32% Frequency

Array

Binary Search

Greedy

Sliding Window

Sorting

+1 more

Random Pick Index

MEDIUM

65% Acceptance32% Frequency

Hash Table

Math

Reservoir Sampling

Randomized

Kth Smallest Element in a BST

MEDIUM

75% Acceptance32% Frequency

Tree

Depth-First Search

Binary Search Tree

Binary Tree

Decode String

MEDIUM

61% Acceptance32% Frequency

String

Stack

Recursion

Koko Eating Bananas

MEDIUM

49% Acceptance32% Frequency

Array

Binary Search

Goat Latin

EASY

69% Acceptance32% Frequency

String

Longest Palindromic Substring

MEDIUM

36% Acceptance32% Frequency

Two Pointers

String

Dynamic Programming

Text Justification

HARD

48% Acceptance32% Frequency

Array

String

Simulation

Remove All Adjacent Duplicates in String II

MEDIUM

60% Acceptance32% Frequency

String

Stack

Best Time to Buy and Sell Stock III

HARD

51% Acceptance32% Frequency

Array

Dynamic Programming

Median of Two Sorted Arrays

HARD

44% Acceptance32% Frequency

Array

Binary Search

Divide and Conquer

How to Prepare for Meta Technical Interviews

1. Master High Frequency DSA

Review the top questions asked in Meta coding rounds over the past 3-6 months. Focus on core patterns including Arrays, Hash Tables, Trees, Dynamic Programming, and Graph Traversals.

2. Practice with AI Voice Mock Interviews

Simulate real pressure by practicing voice and video interview loops on Voke with AI calibrated specifically for Meta engineering standards and behavioral rubrics.