Software Engineer Coding Interview Questions

Review this list of 295 Coding Software Engineer interview questions and answers verified by hiring managers and candidates.

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Implement an iterator class that supports next, hasNext, getState, and setState, then extend it to treat a list of iterators as one continuous iterator with a global index.
2 months ago
Write a function to return all prime numbers up to a given number n.
+12 years ago13 answers
Generate Parentheses Has video answer
+34 months ago15 answers
Given the head of two singly linked lists, write a function to return the point where they intersect (if any).
+32 years ago
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.
4 months ago
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Implement encode and decode for a list of strings.
2 months ago
Given an integer, reverse it. Integers are within range [-2^15, 2^15 - 1].
a year ago1 answer
Koko eating bananas.
2 years ago2 answers
Delete Node in a Binary Search Tree (BST).
a year ago4 answers
Design a task scheduler in Python.
2 months ago10 answers
Build a Calculator
+2a year ago5 answers
Given an org chart tree, compute each employee's level, identify balanced employees, and build a histogram of employees by level.
3 months ago
Given the root of a binary tree of integers, return the maximum path sum. Has video answer
+22 months ago2 answers
Sort a nearly sorted (or K sorted) array.
a year ago1 answer
Find the maximum subarray sum.
+134 months ago34 answers
Solve an interval scheduling problem by finding “free time” intervals to accept queries.
7 months ago1 answer
Rotating the Box
2 years ago
Implement a circular buffer.
2 years ago4 answers
Given an array of integers, find the next greater integer for each element in the array.
a year ago
Construct a binary tree given its preorder and inorder traversals.
+26 months ago11 answers

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Software Engineer Coding Interview Questions

Implement an iterator class that supports next, hasNext, getState, and setState, then extend it to treat a list of iterators as one continuous iterator with a global index.

Write a function to return all prime numbers up to a given number n.

Generate Parentheses Has video answer

Given the head of two singly linked lists, write a function to return the point where they intersect (if any).

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.

Implement encode and decode for a list of strings.

Given an integer, reverse it. Integers are within range [-2^15, 2^15 - 1].

Koko eating bananas.

Delete Node in a Binary Search Tree (BST).

Design a task scheduler in Python.

Build a Calculator

Given an org chart tree, compute each employee's level, identify balanced employees, and build a histogram of employees by level.

Given the root of a binary tree of integers, return the maximum path sum. Has video answer

Sort a nearly sorted (or K sorted) array.

Find the maximum subarray sum.

Solve an interval scheduling problem by finding “free time” intervals to accept queries.

Rotating the Box

Implement a circular buffer.

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

Construct a binary tree given its preorder and inorder traversals.

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