# Questions tagged [number]

This challenge is intended to be solved by using, manipulating, accepting as input, or outputting numeric values.

998 questions
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### Concatenate 2 numeric type values to a fixed size number [closed]

You have 2 numbers, both stored separate as numeric data type. First number is always 6 digits long. Second number can vary between 1 and 4 digits. If it's less than 4 digits, it needs to be padded ...
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### Multiply and Divide

Given a value x find the smallest numerical value greater than y that is capable of being multiplied and divided by x while retaining all original digits. The new numbers do not lose digits. The new ...
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### Longest Repeating Subsequence of a Single Digit

Challenge: Given a positive integer, output the longest single-digit subsequence that occurs at least twice, AND has boundaries of another digit (or the start/end of the integer). An example: Input:...
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### Recover the power from the prime power

It seems that many people would like to have this, so it's now a sequel to this challenge! Definition: a prime power is a natural number that can be expressed in the form pn where p is a prime and n ...
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### Find the Squarish Root

Write code that when given a positive number $x$ as input, outputs the largest positive divisor of $x$ less than or equal to the square root of $x$. In other words find the largest $n > 0$ ...
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### Find the Number With the Highest Sum of Neighbors

The Challenge Given a grid of numbers (10 <= N <= 99) Return number with the highest sum of the four numbers adjacent to it; that is the numbers above, below, right, and left of the number, but ...
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### Indexing Cha-Cha Slide

Introduction: Although I originally had a Dutch song in my head, where the lyrics are: "Doe 'n stapje naar voren, en 'n stapje terug" (which translated to "Take a little step forward, and a little ...
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### Integers sorted by their digital roots

The digital root (also repeated digital sum) of a positive integer is the (single digit) value obtained by an iterative process of summing digits, on each iteration using the result from the previous ...
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### Finding Fastest Frog's Frolicks [duplicate]

A frog sits on a lily pad wishing it were on the other side of the river. There are some lily pads of varying sizes between the frog and the other side of the river. Larger lily pads allow the frog ...
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### Upper or Lower Wythoff?

First, let's talk about Beatty sequences. Given a positive irrational number r, we can construct an infinite sequence by multiplying the positive integers to r in order and taking the floor of each ...
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### Pair and sort from two integer lists

You are given two arbitrary integer lists, e.g. [-10, 99, -6, 43], [100, 32, 44]. You are to pick one integer from each list and ...
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### Fun with strings and numbers

Here's a programming puzzle for you: Given a list of pairs of strings and corresponding numbers, for example, [[A,37],[B,27],[C,21],[D,11],[E,10],[F,9],[G,3],[H,2]]...