Google Coding Interview Questions

Review this list of 62 Google Coding interview questions and answers verified by hiring managers and candidates.

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Implement a decode and encode function of a general N-ary tree.
2 years ago1 answer
Partition an array into two sub-arrays with equal sum.
+2a month ago10 answers
Determine if a given binary tree is a binary search tree (BST).
+32 years ago12 answers
Count the number of ways to split a string.
3 years ago2 answers
Given two strings of equal length, determine if it's possible to form a palindrome by cutting them in half.
3 years ago2 answers
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Given a train schedule with departure city, arrival city, start time, end time, and duration, and given a source and destination, find the sequence of trains that gets you there at the earliest possible time.
6 months ago
Find the minimum window substring. Has video answer
+37 months ago4 answers
Permutations
+2a month ago8 answers
Implement a function to justify a list of words within a given width.
2 years ago1 answer
Implement a function that processes a stream of interval data.
a year ago
Given two strings and two allowed operations, swapping positions of letters and converting all occurrences of one character to another, can the first string be transformed into the second?
6 months ago
Return all unique substrings of a given string.
6 months ago
Find the longest palindromic subsequence using dynamic programming.
+37 months ago13 answers
Coin Change
+27 months ago13 answers
Find the shortest path in a graph.
4 months ago3 answers
Given an array of strings, return groups of "buddy strings," where the strings have the same length and the distance between corresponding characters is the same.
8 months ago
Given a large n-ary tree where the root node can pass information to one child per iteration, and in subsequent iterations, nodes can pass information to one child while the root continues with others, find the minimum number of iterations to reach all nodes.
4 years ago1 answer
Define the scope and requirements for a snake_case to camelCase converter function.
6 months ago
Determine if two words are sorted in lexicographic order.
3 years ago
How would you rebuild one of your projects in a lower-level language to make it faster?
a year ago

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Google Coding Interview Questions

Implement a decode and encode function of a general N-ary tree.

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

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

Count the number of ways to split a string.

Given two strings of equal length, determine if it's possible to form a palindrome by cutting them in half.

Given a train schedule with departure city, arrival city, start time, end time, and duration, and given a source and destination, find the sequence of trains that gets you there at the earliest possible time.

Find the minimum window substring. Has video answer

Permutations

Implement a function to justify a list of words within a given width.

Implement a function that processes a stream of interval data.

Given two strings and two allowed operations, swapping positions of letters and converting all occurrences of one character to another, can the first string be transformed into the second?

Return all unique substrings of a given string.

Find the longest palindromic subsequence using dynamic programming.

Coin Change

Find the shortest path in a graph.

Given an array of strings, return groups of "buddy strings," where the strings have the same length and the distance between corresponding characters is the same.

Given a large n-ary tree where the root node can pass information to one child per iteration, and in subsequent iterations, nodes can pass information to one child while the root continues with others, find the minimum number of iterations to reach all nodes.

Define the scope and requirements for a snake_case to camelCase converter function.

Determine if two words are sorted in lexicographic order.

How would you rebuild one of your projects in a lower-level language to make it faster?

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