Peng Liu

Peng Liu submitted Solution 1286002 to Problem 44357. Back to basics: throwing errors / exceptions

on 13 Oct 2017

Peng Liu submitted Solution 1284662 to Problem 3015. Sum all integers from 1 to 2^x

on 11 Oct 2017

Peng Liu submitted Solution 1281974 to Problem 44357. Back to basics: throwing errors / exceptions

on 5 Oct 2017

Peng Liu submitted Solution 1281295 to Problem 44357. Back to basics: throwing errors / exceptions

on 5 Oct 2017

Peng Liu submitted Solution 1280985 to Problem 44356. Code breaker, Part II: Operation Orthos

on 4 Oct 2017

Peng Liu submitted Solution 1280972 to Problem 44356. Code breaker, Part II: Operation Orthos

on 4 Oct 2017

Peng Liu submitted Solution 1280826 to Problem 44356. Code breaker, Part II: Operation Orthos

on 4 Oct 2017

Peng Liu submitted a Comment to Problem 44356. Code breaker, Part II: Operation Orthos

I also noticed that the iteration number qBig currently being used is too small (and your timing result is only in milliseconds, but there are other overheads which can cause very unreliable measurements). You should use larger qBig, at least 10000. Please note that Cody allows for at least 30 seconds for solution evaluations. So the evaluation time should be in the scale of seconds. This way, any solution runs too slow (e.g., in the scale of minutes) won't pass. This way, without modifying Cody's default scoring system, you automatically force people to focus on improving the code performance, rather than just reducing the code size. Also note that your current modification of the scoring function is an outdated hack to Cody's default scoring system, which does not work any more.

on 3 Oct 2017

Peng Liu submitted a Comment to Problem 44356. Code breaker, Part II: Operation Orthos

I recommend you to add additional test cases where only one key word, either operation or Orthos, appears in your input. Currently, the two words always appear simultaneously (unless they are both absent), and thus, one only needs to check the existence of a single word.

on 3 Oct 2017

Peng Liu submitted Solution 1279552 to Problem 44326. Replace 0 indices in array with 1's

on 1 Oct 2017

Peng Liu submitted Solution 1279551 to Problem 44333. Vector indexing: lower than mean

on 1 Oct 2017

Peng Liu submitted Solution 1279550 to Problem 44332. Resizing Matrices

on 1 Oct 2017

Peng Liu submitted Solution 1279549 to Problem 44331. Matrix Ax=B problem

on 1 Oct 2017

Peng Liu submitted Solution 1279548 to Problem 44329. Matrix multiplication

on 1 Oct 2017

Peng Liu submitted Solution 1279546 to Problem 44328. Sum two matrices

on 1 Oct 2017

Peng Liu submitted Solution 1279490 to Problem 2199. Pairwise Euclidean Distance

on 1 Oct 2017

Peng Liu submitted Solution 1279303 to Problem 44351. Code breaker, Part I: Operation Phoenix

on 30 Sep 2017

Peng Liu submitted Solution 1279099 to Problem 42838. Increasing sub-sequence (Level 2)

on 30 Sep 2017

Peng Liu submitted Solution 1278780 to Problem 44351. Code breaker, Part I: Operation Phoenix

on 29 Sep 2017

Peng Liu submitted Solution 1278763 to Problem 44351. Code breaker, Part I: Operation Phoenix

on 29 Sep 2017

Peng Liu submitted Solution 1277200 to Problem 44348. Seemingly impossible problem

on 27 Sep 2017

Peng Liu submitted Solution 1275327 to Problem 1923. Find the maximum two numbers of every column of a matrix

on 23 Sep 2017

Peng Liu submitted Solution 1275022 to Problem 42248. Return fibonacci sequence do not use loop and condition version 3

on 23 Sep 2017

Peng Liu liked Problem 3690. OXO counting

on 21 Sep 2017

Peng Liu submitted Solution 1271954 to Problem 42936. Project Euler: Problem 11, Largest product in a grid

on 19 Sep 2017

Peng Liu liked Solution 1271612

on 19 Sep 2017

Peng Liu submitted Solution 1269714 to Problem 44295. More Simple String Concatenation

on 17 Sep 2017

Peng Liu submitted Solution 1269689 to Problem 44327. Find the index of the lowest number in a matrix

on 17 Sep 2017

Peng Liu submitted Solution 1269688 to Problem 44325. Matrix Max Finder

on 17 Sep 2017

Peng Liu submitted Solution 1269311 to Problem 44295. More Simple String Concatenation

on 16 Sep 2017

Peng Liu submitted Solution 1269310 to Problem 44295. More Simple String Concatenation

on 16 Sep 2017

Peng Liu submitted Solution 1269294 to Problem 44308. Component area

on 16 Sep 2017

Peng Liu submitted Solution 1268457 to Problem 44324. Rewrite setdiff to account for non-unique values

on 14 Sep 2017

Peng Liu submitted Solution 1268428 to Problem 44322. Make one vector from two others

on 14 Sep 2017

Peng Liu submitted Solution 1267867 to Problem 44263. Multivariate polynomials - emulate symbolic form

on 13 Sep 2017

Peng Liu submitted Solution 1267866 to Problem 44263. Multivariate polynomials - emulate symbolic form

on 13 Sep 2017

Peng Liu submitted Solution 1267555 to Problem 44263. Multivariate polynomials - emulate symbolic form

on 13 Sep 2017

Peng Liu submitted Solution 1267354 to Problem 44263. Multivariate polynomials - emulate symbolic form

on 13 Sep 2017

Peng Liu submitted Solution 1267296 to Problem 44262. Multivariate polynomials - overload multiplication

on 13 Sep 2017

Peng Liu submitted a Comment to Solution 1267206

The output of * operator in this solution is a struct, rather than a mPoly object. Nevertheless, the test suite does not check the type of the output.

on 13 Sep 2017

Peng Liu submitted Solution 1267283 to Problem 44260. Multivariate polynomials - convert monomial form to array

on 13 Sep 2017

Peng Liu submitted a Comment to Problem 44260. Multivariate polynomials - convert monomial form to array

@Tim The correct output from coeffArray for A*x^2+B*x*y+C*y^2+D*x+E*y+F should be [0 0 A;0 B D;C E F]

on 13 Sep 2017

Peng Liu submitted Solution 1267206 to Problem 44262. Multivariate polynomials - overload multiplication

on 12 Sep 2017

Peng Liu submitted a Comment to Problem 44261. Multivariate polynomials - sort monomials

The sorted coefficients in your example should be [1; 4; 3; -2].

on 12 Sep 2017

Peng Liu submitted Solution 1266949 to Problem 44261. Multivariate polynomials - sort monomials