li haitao
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1 of your answers has been accepted
Awarded to li haitao on 20 Jul 2017
Provide your first answer ever to someone else's question
Awarded to li haitao on 20 Jul 2017
Solve a community group
Awarded to li haitao on 06 Feb 2019
Solve all the problems in Introduction to MATLAB problem group
Awarded to li haitao on 18 Jan 2019
Publish your first review
Awarded to li haitao on 09 Oct 2019
Solve all the problems in Cody5:Easy
Awarded to li haitao on 27 Nov 2018
Solve all the problems in Divisible by x
Awarded to li haitao on 16 Nov 2018
Solve all the problems in Cody Challenge
Awarded to li haitao on 22 Oct 2018
Solve all the problems in Draw Letters problem group
Awarded to li haitao on 10 Oct 2018
Solve Project Euler problems using Matlab
Awarded to li haitao on 27 Sep 2018
Solve all the problems in Matrix Manipulation I
Awarded to li haitao on 16 May 2018
Solve all the problems in R2016b Feature Challenge
Awarded to li haitao on 03 May 2018
Content Feed
Solved
Find the Best Hotels
Given three input variables: * |hotels| - a list of hotel names * |ratings| - their ratings in a city * |cutoff| - the rat...
8 mesi ago
Solved
Calculate Inner Product
Given two input matrices, |x| and |y|, check if their inner dimensions match. * If they match, create an output variable |z|...
8 mesi ago
Solved
Verify Law of Large Numbers
If a large number of fair N-sided dice are rolled, the average of the simulated rolls is likely to be close to the mean of 1,2,....
8 mesi ago
Solved
Mid-term report
You just got your mid-term report, but it's full of ones and twos :(. So before you give it to your parents, you change it, in o...
8 mesi ago
Solved
Problem for beginners
Suppose that x is a column vector, with at least a length of 6. Delete the 2., 6., and the second last row. Example: X=[1;2;3...
8 mesi ago
Solved
Problem for beginners
M is a nxm matrix. Swap the fist and the second last column with eachother. X=[1 2 3;4 5 6;7 8 9] Y=[2 1 3;5 4 6;8 7 9]
8 mesi ago
Solved
Stairs
Make an n by n matrix, where the elements are ones and zeros. In the main diagonal, and under that, there should be only ones (...
8 mesi ago
Solved
Square root
Given x (a matrix), give back another matrix, where all the elements are the square roots of x's elements.
8 mesi ago
Solved
Simple Matrix
Make the following matrix without typing it in one by one. [1 2 3; 2 4 6; 4 8 12] x=[1 2 3].
8 mesi ago
Solved
Lights Out 10 - 5x5, with wrapping, 6 moves
<https://en.wikipedia.org/wiki/Lights_Out_(game) Lights Out> is a logic game wherein all lights need to be turned off to complet...
8 mesi ago
Solved
Lights Out 11 - 5x5, with wrapping, x moves
<https://en.wikipedia.org/wiki/Lights_Out_(game) Lights Out> is a logic game wherein all lights need to be turned off to complet...
8 mesi ago
Solved
Lights Out 9 - 5x5, light-only solution? II
<https://en.wikipedia.org/wiki/Lights_Out_(game) Lights Out> is a logic game wherein all lights need to be turned off to complet...
8 mesi ago
Solved
Lights Out 8 - 5x5, light-only solution? I
<https://en.wikipedia.org/wiki/Lights_Out_(game) Lights Out> is a logic game wherein all lights need to be turned off to complet...
8 mesi ago
Solved
Lights Out 12 - 5x5, three stages, <7 moves
<https://en.wikipedia.org/wiki/Lights_Out_(game) Lights Out> is a logic game wherein all lights need to be turned off to complet...
8 mesi ago
Solved
Lights Out 14 - 5x5, four stages, x moves
<https://en.wikipedia.org/wiki/Lights_Out_(game) Lights Out> is a logic game wherein all lights need to be turned off to complet...
8 mesi ago
Solved
Lights Out 13 - 5x5, three stages, x moves
<https://en.wikipedia.org/wiki/Lights_Out_(game) Lights Out> is a logic game wherein all lights need to be turned off to complet...
8 mesi ago
Solved
Lights Out 15 - 5x5, broken buttons I
<https://en.wikipedia.org/wiki/Lights_Out_(game) Lights Out> is a logic game wherein all lights need to be turned off to complet...
8 mesi ago
Solved
Lights Out 7 - 5x5, x moves
<https://en.wikipedia.org/wiki/Lights_Out_(game) Lights Out> is a logic game wherein all lights need to be turned off to complet...
8 mesi ago
Solved
It's going down. We're finding simbers!
This problem is inspired by Project Euler 520: Simbers. "We define a simber to be a positive integer in which any odd digit, ...
8 mesi ago
Solved
Large Sum (inspired by Project Euler 13)
Your function will be provided an arbitrary number of numbers of arbitrary sizes as a cell array of strings. Some numbers will b...
8 mesi ago
Solved
Project Euler: Problem 16, Sums of Digits of Powers of Two
2^15 = 32768 and the sum of its digits is 3 + 2 + 7 + 6 + 8 = 26. What is the sum of the digits of the number 2^N? Thanks ...
8 mesi ago
Solved
Hexagonal numbers on a spiral matrix
Put hexagonal numbers in a ( m x m ) spiral matrix and return the sum of its diagonal elements. Formula of hexagonal numbers ...
8 mesi ago
Solved
Sums of cubes and squares of sums
Given the positive integers 1:n, can you: 1. Compute twice the sum of the cubes of those numbers. 2. Subtract the square...
8 mesi ago
Solved
Sum of big primes without primes
Inspired by Project Euler n°10 (I am quite obviously a fan). With problem n°250 by Doug, you can find some global methods to ...
8 mesi ago
Solved
Infinite precision division
Develop a function that will divide a very very large integer numerator, supplied to function as a string (e.g., '12233344445555...
8 mesi ago
Solved
How to multiply?
* Imagine you are in 3012 Anno Domini, when everyone must learn how to multiply, * and competing for the highly prestigious pos...
8 mesi ago
