Software Engineer Coding Interview Questions

Review this list of 323 Coding Software Engineer interview questions and answers verified by hiring managers and candidates.

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Given an array of integers and an integer k, find the kth largest element in the array.
8 months ago4 answers
Search in rotated sorted array
+82 years ago
Get the top API users based on transaction logs.
2 years ago1 answer
Clone a linked list with a random pointer.
2 years ago
Implement a decode and encode function of a general N-ary tree.
2 years ago1 answer
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Balanced Tree
a year ago17 answers
A knapsack has a maximum capacity C and there are n items each with weight w[i] and value v[i]. Maximize the knapsack value without exceeding capacity. Has video answer
4 years ago12 answers
Split an array into equal sum subarrays Has video answer
a month ago
Accounts Merge
9 months ago
Given a large, partially implemented LLM/agentic codebase, identify the intended behavior and implement a missing function by reading and reasoning through the existing code, without explicit test cases or I/O specs.
3 months ago
Calculate the trapped rainwater between bars in a given array.
+102 years ago19 answers
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
Merge two sorted lists
+38 months ago6 answers
Count the number of ways to split a string.
3 years ago2 answers
Roman to Integer
+12 years ago
Given a string, return the number of vowel substrings ('a', 'e', 'i', 'o', 'u') that include all five vowels.
3 years ago4 answers
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
Count items within compartments between specific indices of an array.
2 years ago1 answer
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2 years ago

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Software Engineer Coding Interview Questions

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

Search in rotated sorted array

Get the top API users based on transaction logs.

Clone a linked list with a random pointer.

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

Balanced Tree

A knapsack has a maximum capacity C and there are n items each with weight w[i] and value v[i]. Maximize the knapsack value without exceeding capacity. Has video answer

Split an array into equal sum subarrays Has video answer

Accounts Merge

Given a large, partially implemented LLM/agentic codebase, identify the intended behavior and implement a missing function by reading and reasoning through the existing code, without explicit test cases or I/O specs.

Calculate the trapped rainwater between bars in a given array.

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

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

Merge two sorted lists

Count the number of ways to split a string.

Roman to Integer

Given a string, return the number of vowel substrings ('a', 'e', 'i', 'o', 'u') that include all five vowels.

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.

Count items within compartments between specific indices of an array.

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