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Tag: interview questions

Interview Questions – Algorithms – Pairwise

Posted on February 9, 2022 by Greg Bulmash

This series answers coding interview questions from the Coding Interview Prep collection at freeCodeCamp. You can find more with the interview questions tag. Given an array of elements and a number as…

Interview Questions – Create a Linked List Class

Posted on February 4, 2022February 4, 2022 by Greg Bulmash

This series answers coding interview questions from the Coding Interview Prep collection at freeCodeCamp. You can find more with the interview questions tag. This is a data structures problem. The question starta…

Interview Questions: Even Fibonacci Numbers

Posted on February 3, 2022 by Greg Bulmash

This series answers coding interview questions from the Coding Interview Prep collection at freeCodeCamp. You can find more with the interview questions tag. This is an algorithmic problem from the Project Euler…

Interview Questions: The 24 Game – Rosetta Code

Posted on February 2, 2022January 30, 2022 by Greg Bulmash

The game is to take a string of 4 digits and determine how to make them total up to 24 using plus, minus, times, divide, and parentheses. People play this game sort of like Sudoku as a mental exercise.

The Coding Interview: No Repeats Please

Posted on February 1, 2022January 30, 2022 by Greg Bulmash

This series answers coding interview questions from the Coding Interview Prep collection at freeCodeCamp. You can find more with the interview questions tag. This is an algorithm problem. It came in handy…

The Coding Interview: Rosetta Code – 100 Doors

Posted on January 31, 2022January 30, 2022 by Greg Bulmash

In this exercise, we receive an arbitrary # of doors (100 in the title, but not always). We manipulate those doors over and over, then return a result based on the final state after the manipulations.

The Coding Interview: Updating Inventory

Posted on January 30, 2022January 30, 2022 by Greg Bulmash

We have two 2-dimensional arrays in the form of `[[count, “product1”], [count, “product2”],…]`. The task is to compare them. Where a product exists in both arrays, add the sum of the two counts and the product name in the final array. If the item is unique to either array, add it to the final array. Return the final array, alphabetically sorted…

The Coding Interview: Create A Circular Queue

Posted on January 28, 2022 by Greg Bulmash

This is a data structure problem. A circular queue allows you to specify a size for easier memory management. It’s initialized with a set number of slots. Each write operation fills a slot, each read operation empties a slot.

The Coding Interview: Implement a Bubble Sort

Posted on January 27, 2022January 26, 2022 by Greg Bulmash

This series answers coding interview questions from the Coding Interview Prep collection at freeCodeCamp. You can find more with the interview questions tag. I’ve had 8 different blogs since 1995, two of…

The Coding Interview: Implement Binary Search

Posted on January 26, 2022January 26, 2022 by Greg Bulmash

In this implementation of a binary search, you’re presented a sorted array of values and a target value to find within it.

The Coding Interview: Find the Symmetric Difference

Posted on January 25, 2022January 25, 2022 by Greg Bulmash

The concept is to find the numbers in two arrays that do not repeat in both. If you’re comparing more than 2 arrays, you compare the next array (and beyond) to the result of the last comparison.

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