Meta Coding Interview Questions

Review this list of 78 Meta Coding interview questions and answers verified by hiring managers and candidates.

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Given the root of a binary tree, return the length of the diameter of the tree.
7 months ago15 answers
Given a head node of a linked list, delete k-th node from the end of the list.
a year ago5 answers
Given an array, find the two sum.
+12a year ago58 answers
Generate Parentheses Has video answer
+34 months ago15 answers
Build a Calculator
+22 years ago5 answers
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Given an array of integers, find the next greater integer for each element in the array.
a year ago
Implement a circular buffer.
2 years ago4 answers
Given a list of strings, find all strings that encode to the same value using a Caesar Cipher. (A Caesar Cipher rotates characters, e.g. in CC3: a->d, b->e, ..., z->c)
8 months ago1 answer
Construct a binary tree given its preorder and inorder traversals.
+26 months ago11 answers
Merge k sorted linked lists. Has video answer
+62 years ago14 answers
Sort a K-Messed Array
2 years ago22 answers
Clone a linked list with a random pointer.
a year ago
Given an array of integers and an integer k, find the kth largest element in the array.
6 months ago4 answers
Given a list of strings, find the number of occurrences of the second letter of the first word, and return the character and its count.
4 months ago1 answer
Given a string with parentheses, write a function that removes the minimum number of characters to balance the parentheses.
2 years ago1 answer
Merge two sorted lists
+36 months ago6 answers
Determine if a given binary tree is a binary search tree (BST).
+22 years ago11 answers
Sort a doubly linked list using merge sort. Has video answer
5 years ago8 answers
Find the equilibrium index in an array where sum of elements to the left is equal to sum of elements to the right.
a year ago1 answer
Partition an array into two sub-arrays with equal sum.
+12 years ago7 answers

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Meta Coding Interview Questions

Given the root of a binary tree, return the length of the diameter of the tree.

Given a head node of a linked list, delete k-th node from the end of the list.

Given an array, find the two sum.

Generate Parentheses Has video answer

Build a Calculator

Given an array of integers, find the next greater integer for each element in the array.

Implement a circular buffer.

Given a list of strings, find all strings that encode to the same value using a Caesar Cipher. (A Caesar Cipher rotates characters, e.g. in CC3: a->d, b->e, ..., z->c)

Construct a binary tree given its preorder and inorder traversals.

Merge k sorted linked lists. Has video answer

Sort a K-Messed Array

Clone a linked list with a random pointer.

Given an array of integers and an integer k, find the kth largest element in the array.

Given a list of strings, find the number of occurrences of the second letter of the first word, and return the character and its count.

Given a string with parentheses, write a function that removes the minimum number of characters to balance the parentheses.

Merge two sorted lists

Determine if a given binary tree is a binary search tree (BST).

Sort a doubly linked list using merge sort. Has video answer

Find the equilibrium index in an array where sum of elements to the left is equal to sum of elements to the right.

Partition an array into two sub-arrays with equal sum.

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