Daniel Rubin
Check-Cap Ltd
Followers: 0 Following: 0
Physicist working in developing medical imaging equipment. Has >10 years of experience in the field (worked at GE Healthcare and Philips Healthcare).
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Solve a community group
Awarded to Daniel Rubin on 22 Oct 2020
Solve all the problems in Cody Challenge
Awarded to Daniel Rubin on 28 Jan 2018
Like a problem or solution
Awarded to Daniel Rubin on 04 Dec 2017
Completed both Cody 5th anniversary groups
Awarded to Daniel Rubin on 30 Nov 2017
Comment on a problem or solution
Awarded to Daniel Rubin on 29 Nov 2017
Solve all the problems in Cody5:Easy
Awarded to Daniel Rubin on 07 Nov 2017
Provide your first answer ever to someone else's question
Awarded to Daniel Rubin on 20 Jul 2017
15-year anniversary Scavenger Hunt finisher badge
Awarded to Daniel Rubin on 09 Nov 2016
Solve a problem for the first time
Awarded to Daniel Rubin on 07 May 2015
Feeds
Solved
Convert Roman to Arabic Numerals
Based upon what I see on tv and at the movies, the use of Roman numerals indicates something is important or sophisticated (e.g....
ongeveer 2 jaar ago
Solved
7 segment LED display
Given a whole number, output how many segments would be lit up to display it on a 7 segment LED display (see Wikipedia: http://e...
ongeveer 2 jaar ago
Solved
Number of 1s in the Binary Representation of a Number
*Description* Return the number of 1s in the (unsigned integer) binary representation of a number. This function should be ab...
ongeveer 2 jaar ago
Solved
Rotate Matrix @180 degree
Rotate Matrix @180 degree Example A=[8 1 6; 3 5 7; 4 9 2], then answer would be [2 9 4;...
ongeveer 2 jaar ago
Solved
Vector creation
Create a vector using square brackets going from 1 to the given value x in steps on 1. Hint: use increment.
ongeveer 2 jaar ago
Solved
Doubling elements in a vector
Given the vector A, return B in which all numbers in A are doubling. So for: A = [ 1 5 8 ] then B = [ 1 1 5 ...
ongeveer 2 jaar ago
Solved
Flip the vector from right to left
Flip the vector from right to left. Examples x=[1:5], then y=[5 4 3 2 1] x=[1 4 6], then y=[6 4 1]; Request not ...
ongeveer 2 jaar ago
Solved
Whether the input is vector?
Given the input x, return 1 if x is vector or else 0.
ongeveer 2 jaar ago
Solved
Get the length of a given vector
Given a vector x, the output y should equal the length of x.
ongeveer 2 jaar ago
Solved
Find Closest Constant
Given a number x, return the value that is closest to x from this list of constants: 0, 1, , e, , (also known as ). For exampl...
ongeveer 2 jaar ago
Solved
Matrix Quadrants
Write a function that takes N as the input, and outputs a matrix whose upper-left (NxN) quadrant contains all ones, the lower-ri...
ongeveer 2 jaar ago
Solved
Smallest n, for n! to have m trailing zero digits
For given positive integer n, its factorial often has many trailing zeros, in other words many factors of 10s. In order for n! t...
ongeveer 4 jaar ago
Solved
Better Index Number
Let's say you want to save many, many files and append these files with a certain sortable index number. As you probably know, y...
ongeveer 4 jaar ago
Solved
Whole Number Un-Concatenator
Write a function that accepts an integer and an index digit and returns a vector containing two integers which are the leading a...
ongeveer 4 jaar ago
Solved
Whole Number Concatenator
Write a function that concatenates whole numbers. For example: numcat(111,222) should return 111222 numcat(1,2,3,4,5) s...
ongeveer 4 jaar ago
Solved
The number of trailing zero digit of a factorial
For given positive integer n, take factorial of that number. How many trailing zeros does it have? Example: factorial(11) = 3...
ongeveer 4 jaar ago
Solved
The last non-zero digit of a factorial
For given positive integer n, what is the last non-zero digit of n!? Example: factorial(11) = 39916800 Last non-zero d...
ongeveer 4 jaar ago
Solved
Permutation Via Multiplication
Given two numbers a and b, determine if the product ab is a permutation of the digits of a. For example, this is always true for...
ongeveer 4 jaar ago
Solved
Lunar Arithmetic (Multiplication)
<https://oeis.org/A087061 OEIS link for a description of lunar arithmetic> Simply take the larger digit when adding and take ...
ongeveer 4 jaar ago
Solved
Lunar Arithmetic (Addition)
<https://oeis.org/A087061 OEIS link for a description of lunar arithmetic> Simply take the larger digit. Example 1: ...
ongeveer 4 jaar ago
Solved
Muphry's Law of MATLAB
You're running some simple multiplication problems through MATLAB for error checking purposes, but nothing seems to come up with...
ongeveer 4 jaar ago
Solved
Expand 10^n to Powers of 4
Given an integer n, return the coefficients c = [c_n,c_n-1,...,c_0] Such that 10^n = c_n*4^(n) + c_n-1*4^(n-1...
ongeveer 4 jaar ago
Solved
Maximum value in a matrix
Find the maximum value in the given matrix. For example, if A = [1 2 3; 4 7 8; 0 9 1]; then the answer is 9.
ongeveer 4 jaar ago
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