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Trap a knight
Consider a knight on an infinite chessboard labeled with numbers spiraling outward. A knight starting on the square labeled 1 ca...
27 minutes ago
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Flip the parity of digits in a decimal expansion
The number 349 has the decimal expansion . If we change the even digits from positive to negative, then the number becomes 269 (...
23 hours ago
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Determine whether a number is practical
A number is practical if all smaller numbers can be written as a sum of the proper divisors of . The number 24 is practical bec...
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Generate the Figure-Figure sequence
After discussing Scott Kim’s FIGURE-FIGURE Figure (below) in Gödel, Escher, Bach, Douglas Hofstadter introduced an integer seque...
23 hours ago
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Determine whether the input is an anagram number
In Cody Problem 44293, Mehmet OZC asks us to spell numbers as words. For example, 67 would be “sixty-seven” and 76 would be “sev...
2 days ago
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Compute a determinant
Write a function to compute the determinant of an x matrix with diagonal entries equal to an integer and other entries equal ...
2 days ago
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Easy Sequences 43: Least Common Fibonacci Number
The Fibonacci sequence is a series whose elements are numbers starting with and , and subsequent Fibonacci numbers are defined...
3 days ago
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Determine the full width at half max
Determine the full width at half max of a curve. The full width at half maximum (FWHM) is a parameter which is used for desc...
4 days ago
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Reduce - Map-Reduce
Write reduce function, that takes arguments and constantly folds results into next call argument, finally returning a value; ...
4 days ago
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Count the Even Digits in a Number
Given a positive integer n, write a function that returns how many digits of n are even. Even digits are: 0, 2, 4, 6, 8
4 days ago
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Restricted Addition v1
Add two numbers without use of common arithmetic operations. Unfortunately, in order to enforce this restriction, other restrict...
4 days ago
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find subscripts from linear index
a matrix and the linear index of an element is given as input. find the subscripts of that element. if linear index=3 , outp...
4 days ago
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Pascal's Equilateral triangle inside a Matrix!!!
Given a number of row 'n', generate the following pascal's matrix 'p' where spaces are filled by 'zeros'. number of row, n = ...
4 days ago
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'5*3' copy character 3 - five times
The input is a string. Wherever a * sign occurs in string repeat copies of character on the right hand side of * sign. The numbe...
4 days ago
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GJam 2017 Kickstart: Leader (Small)
This Challenge is derived from <http://code.google.com/codejam/contest/6304486/dashboard#s=p0 GJam 2017 Kickstart Leader>. This ...
4 days ago
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Sherlock Holmes: The Spy Problem
A guest at a party is a spy if this person is not known by any other guest, but knows all of them. There is at most one spy at a...
5 days ago
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Zigzag of square matrix
find zigzag of square matrix in one dimension array a=[1 2 3;4 5 6;7 8 9]; should return b= [1 2 4 7 5 3 6 8 9]
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¡Puntos de corte!
Crea una función que permita calcular los puntos de corte con los ejes X e Y de una función cuadrática indicada por el usuario e...
5 days ago
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Bernoulli's Triangle
Generate the bernoulli's triangle upto nth row. <https://mathworld.wolfram.com/BernoulliTriangle.html>
5 days ago
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Abelian Sandpile - 02
Generate a matrix like Abelian Sandpile where the four corner element is n. For example, n=4 [4 3 2 1 ...
5 days ago
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Yoonir - 02
Find the area of a six-pointed star inscribed in a circle of radius r.
5 days ago
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Fault in our Stars - 01
Create a ladder pattern with n-steps and b-width. For example, For n=2, b=5 -- the ladder would look like - '* ...
5 days ago
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Gapful numbers
If a number is divisible by the number formed by the first and last digit of that number then it is defined as a gapful number. ...
5 days ago
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3rd side of a Triangle
Given two sides of a triangle, find the minimum and maximum possible area of the triangle. the length of the third side has t...
5 days ago
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Grazing-01
A cow is tied to an outside corner of a rectangular barn of size (a,b) with a rope of length l. What is the maximum area the cow...
5 days ago
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Have you seen any Spindromes recently?
* Never been to the <http://en.wikipedia.org/wiki/Makemake_(dwarf_planet) dwarf planet makemake> yet? * Assume a new unexplore...
5 days ago
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Weird Diagonal Matrix!!
**If you have loved the problem, please like it below(Request)** Given an integer n, create a matrix whose diagonal elements wi...
6 days ago
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perfect square
Perfect square is amazing, so we have problems like 45183, 34482, 44683, and 44957. But how can we find a large number is a pe...
6 days ago
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n-th digit of write-down all numbers
Write down number as 123456789101112131415161718192021222324252627282930... what's the n-th digit? input n and get the digit.
6 days ago
