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MATLAB Central Community 20 Year Anniversary Treasure Hunt participant badge
Awarded to Jean-Marie Sainthillier on 14 Sep 2021
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Provide your first answer ever to someone else's question
Awarded to Jean-Marie Sainthillier on 20 Jul 2017
Solve all the problems in Word Puzzles problem group
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Receive 10 likes on a problem you have created
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Solve all the problems in Indexing V
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Solve all the problems in Strings III
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Solve a community group
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Solve all the problems in Matrix Patterns III problem group
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Solve all the problems in Draw Letters problem group
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Solve Project Euler problems using Matlab
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Solve all the problems in Number Manipulation I problem group
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Content Feed
Solved
Find the nth composite number.
Everyone heard about the nth prime number. Let's try to find out the nth composite. For example , 1 is the first composite, 10 i...
9 days ago
Solved
Hoax Numbers
A Hoax Number (OEIS A019506) is defined as a composite number, whose sum of digits is equal to the sum of digits of its distinct...
14 days ago
Solved
List the nth prime quartet prefix
Prime numbers larger than 5 can end only in 1, 3, 7, or 9, but of course not all numbers ending in these four digits are prime. ...
21 days ago
Solved
Count the primes in Collatz sequences
Several Cody problems (21, 69, 42937, 44448, 44784, 52422) involve Collatz sequences. These start with a seed . If is odd, the ...
21 days ago
Solved
Area-01
Given the radius of the circle inscribed in a square, find the area that is not bounded by the circle but inside the square. ...
3 months ago
Solved
Create array of all Distances between two Sets of Points
This Challenge is a subsection of Martian Pranks based on Tim's efficient Distance calculation between sets of points. Given Po...
3 months ago
Solved
Generate a matrix as follows
write a Function that gives like the following for a random n: n=2 ans= [ 0 1 1 0] n=6 ans= [ 0 ...
3 months ago
Solved
Find the number of days in a given year
Given a year number (eg. 2000) as input, find how many days are there in the given year.
3 months ago
Solved
Determine whether a number is unprimeable
The number 204 is unprimeable because no single digit can be changed to make it prime. In contrast, the number 207 is not unprim...
3 months ago
Solved
Ugly numbers - 02
Ugly numbers are those whose prime factors are 2, 3 or 5. find the nth ugly number. n.b. unlike the previous problem,trivi...
3 months ago
Solved
Ugly numbers - 03
For this case, a number is defined ugly if it has prime factors consisting of only elements of x. Find the nth ugly number. ...
3 months ago
Solved
Determine whether a number is a prime self number
Integers can be classified as generated numbers or self numbers. A generated number is one that can be expressed as the sum of a...
3 months ago
