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Nikolaos Nikolaou


Last seen: 14 days ago Active since 2015

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AI engineer

Programming Languages:
Python, C++, C, R, MATLAB, SQL
Spoken Languages:
English
Pronouns:
He/him
Professional Interests:
AI, Data Science, and Statistics

Statistics

  • Treasure Hunt Participant
  • MATLAB Central Treasure Hunt Finisher
  • Magic Numbers II Master
  • R2016b Feature Challenge Master
  • ASEE Challenge Master
  • Sequences And Series II Master
  • Leader
  • Matrix Patterns III Master
  • Matrix Patterns I Master
  • Matrix Manipulation II Master
  • Indexing IV Master
  • Number Manipulation II Master

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Solved


Reversing Maximal Ascending Subsequences
Create and return a new array that contains the same elements as the input array, but with the elements within each strictly inc...

14 days ago

Solved


Secret Message and Acrostic
One of the simplest ways to hide a message involves utilizing uppercase letters. Given a text, collect all uppercase letters in...

17 days ago

Solved


Instructions Following
Complete the function follow(s) which, for a given string (containing only the letters 'f', 'b', 'l', 'r'), calculates the final...

17 days ago

Solved


Calculating the Union Area of Overlapping Rectangles
Calculate the area covered by a union of multiple rectangles. Each rectangle is represented by 4 integers: the first two integer...

17 days ago

Solved


Find the triplet
Given an array x of size n > 3 and an integer N, return the indices of three elements in the array that sum up to the given inte...

19 days ago

Solved


Final Stone Weight
You are given an array with weights of stones. The objective is to determine the weight of the final stone remaining after all c...

19 days ago

Solved


Finding the Most Frequent Letter in a Text
You are given a text containing various English letters, digits and punctuation symbols. Your task is to find the most frequentl...

19 days ago

Solved


Perfect shuffle
We call "perfect shuffle" the process of cutting a deck of cards into two equal halves, and then perfectly interleaving them: on...

19 days ago

Solved


Interval Compression
Given a set of integers, the task is to create a list of closed intervals where each interval includes its endpoints. For exampl...

20 days ago

Solved


Hofstadter H sequence
The Hofstadter G sequence is defined as follows: The first elements of the sequence are 0, 1, 1, 2, 3, 4, 4, 5, 5, 6. Write ...

20 days ago

Solved


Hofstadter G sequence
The Hofstadter G sequence is defined as follows: The first elements of the sequence are 0, 1, 1, 2, 3, 3, 4, 4, 5, 6. Write ...

20 days ago

Solved


Integer Persistence, Product
Let's construct a sequence as follows: is a given natural number, and is the product of the digits of . The persistence of i...

20 days ago

Solved


Hofstadter Female and Male sequences
The Hofstadter Female (F) and Male (M) sequences are defined as follows Write a function to compute for a given n. See http...

20 days ago

Solved


Spreadsheet Column Number
Spreadsheet uses an alphabetic naming system for columns, starting with 'A', 'B', 'C', etc. The column names continue like 'AB',...

20 days ago

Solved


Stern-Brocot Sequence
The Stern-Brocot diatomic sequence is defined as follows: The first elements of the sequence are 0, 1, 1, 2, 1, 3, 2, 3, 1, 4...

20 days ago

Solved


Hofstadter Q sequence
The Hofstadter G sequence is defined as follows: The first elements of the sequence are 1, 1, 2, 3, 3, 4, 5, 5, 6, 6. Write ...

21 days ago

Solved


Fangs of a vampire number
A vampire number is a number v that is the product of two numbers x and y such that the following conditions are satisfied: at ...

26 days ago

Solved


Find Next Strictly Greater Element
Given an array of numbers, create a new array where each element represents the next strictly greater element to the right of th...

1 month ago

Solved


CamelCase to snake_case convention
The CamelCase naming convention capitalizes the first letter of each word. In snake_case convention, words are written in lowerc...

1 month ago

Solved


Absolute Sorting
Given an array with various numbers, your have to sort it by absolute value in ascending order. For example, for the array [-2...

1 month ago

Solved


Reverse Integer
You are given an integer, reverse its digits. For negative integers, the sign should remain in the front. For instance, 12340 s...

1 month ago

Solved


Battery Charge Indicator
Write a function called battery_charge that visually represents the charge of a battery. The function takes an integer paramete...

1 month ago

Solved


snake_case to CamelCase convention
The snake_case naming convention writes words in lowercase and separates them with underscores. In CamelCase convention, the fir...

1 month ago

Solved


Calculate the Levenshtein distance between two strings
This problem description is lifted from http://en.wikipedia.org/wiki/Levenshtein_distance. The Levenshtein distance between two...

2 months ago

Solved


List the dopey numbers
If vile numbers have binary representations that end with an even number of zeros (even vile), then numbers with binary represe...

2 months ago

Solved


Find the smallest integer m such that n divides m!
Write a function that takes an integer and finds the smallest integer whose factorial is divisible by . For example, if , then...

2 months ago

Solved


Next Tribonacci Number
The "Tribonacci" sequence is an extension of the idea of the Fibonacci sequence: That is, each new term is the sum of the thr...

2 months ago

Solved


Update course numbers and abbreviations
Suppose that the educational institution where you teach purchases new software to handle many essential functions, including co...

2 months ago

Solved


Find the circle inscribed in a triangle
Write a function that takes the x- and y-coordinates of three points describing the vertices of a triangle and returns the cente...

2 months ago

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