Introduction OnePlus is a Chinese smartphone manufacturer founded in December 2013. Their latest phone, OnePlus 5, was unveiled on June 20, 2017. I am sure you have seen that the name of the phone can easily be translated to a sum... OnePlus...One+...1+...Ok you got it ! Input The name of one...

Is it possible to fix header in my HTML page using Javascript without using CSS property position:fixed?

Plant trees in a park! (Fastest code?) This challenge is inspired by this app. I'm not sure if I should make this code-golf or fastest-code. I'm tempted to do fastest code, but I can't test the submissions my self. Also, I'm not sure if 12-by-12 is large enough to work as fastest code....? ...

Fizz-Buzzify a String You will be given a String that only contains the letters of the English Alphabet, both lowercase and uppercase (ASCII 65-90 and 97-122). Your task is to output the Fizz-Buzzified version of the String. How to Fizz-Buzzify a String? Each letter that has an even index in ...

Consider all possible pairs of sets of integers (can have positive, negative and zero values) A and B such that |A| = |B| = 7. Define the set T_{A,B} = {a * b | a in A, B in B}. The challenge is to iterate over all pairs of sets A and B so that |T_{A,B}| < 19 and the largest absolute value of...

Divide the first quadrant (including the positive x-axis, the positive y-axis, and the origin) into 1x1 grids, with each grid labelled by the coordinates of its bottom-left corner, as demonstrated below: Note that each grid contains its boundaries and its vertices. Using mathematical symbols, ...

Iterate over all sets (This question needs fixing so that the output size is not too large) Consider all possible pairs of sets of integers (can have positive, negative and zero values) A and B such that |A| = |B| = 7. Define the set T_{A,B} = {a * b | a in A, B in B}. The challenge is to i...

This challenge is inspired by this app. You'll be given a square input grid, of dimensions n-by-n where 9 <= n <= 12. This grid will be divided into n areas, where the cells of each area has a unique identifiers (I'll use lower case letters from a-k in the the text here, but you may choose wha...

Related: Validate a stem-and-leaf plot Input A non-empty list of positive integers. If needed, they can be taken as strings. You cannot assume it is sorted. Output A stem-and-leaf plot of the numbers. In a this stem-and-leaf plot, numbers are ordered into stems by tens, then all numbers that ...

Divinacci (OEIS) Perform the Fibonacci sequence but instead of using: f(n) = f(n-1)+f(n-2) Use: f(n) = sum(divisors(f(n-1))) + sum(divisors(f(n-2))) First 14 terms (0-indexed, you may 1-index; state which you used): 0 | 0 # Initial | [] 1 | 1 # Initial ...

Write a program that takes screenshots and save it the runtime catalog. The screenshot should be taken of the whole screen, if there are multiple monitors then all of them should be on the picture. The shortest answer wins

I'm looking out of my attic window into my neighbor's yard. They have a dog chained to a post in the center of the yard. The dog runs around the yard but is always on the end of its chain, so it ends up leaving a track in the dirt. Normally this track would be perfectly circular, but my neighbo...