Honglei Chen

7401

Rank

2

Badges

850

Score

View Community Profile

1 – 50 of 83

Problem 44385. Extra safe primes

Created by: Matthew Eicholtz

Tags prime numbers, cody5, safe prime

2

Solutions

35

Size

2

Solutions

35

Size

Problem 369. Basic electricity in a dry situation

Created by: AMITAVA BISWAS

Tags physics, current, cody5

1

Solution

14

Size

1

Solution

14

Size

Problem 44360. Pentagonal Numbers

Created by: goc3

Tags series, number, sequence

3

Solutions

79

Size

3

Solutions

79

Size

Problem 2736. Pernicious Anniversary Problem

Created by: Jan Orwat

Tags easy, sequences, oeis

1

Solution

18

Size

1

Solution

18

Size

Problem 44349. Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock.

Created by: James

Tags time, cody5

14

Solutions

10

Size

14

Solutions

10

Size

Problem 361. Energy of a photon

Created by: AMITAVA BISWAS

Tags physics, frequency, energy

1

Solution

12

Size

1

Solution

12

Size

Problem 564. How to subtract?

Created by: AMITAVA BISWAS

Tags addition, cody5, X-Y

6

Solutions

20

Size

6

Solutions

20

Size

Problem 42504. Data Regularization

Created by: Peng Liu

Tags matrix, integer, vectorization

1

Solution

65

Size

1

Solution

65

Size

Problem 39. Which values occur exactly three times?

Created by: Cody Team

Tags search

1

Solution

25

Size

1

Solution

25

Size

Compute the step response of a DC motor

Created by: MathWorks Simulink Team

Tags simulink, electronics, physical modeling

1

Solution

66

Size

1

Solution

66

Size

Model a simple pendulum

Created by: MathWorks Simulink Team

Tags ode, physics, pendulum

1

Solution

30

Size

1

Solution

30

Size

Produce a Fibonacci sequence

Created by: MathWorks Simulink Team

Tags mathematics, simulink, discrete

1

Solution

34

Size

1

Solution

34

Size

Make a low pass filter

Created by: MathWorks Simulink Team

Tags signal processing, simulink

1

Solution

24

Size

1

Solution

24

Size

Model a falling body

Created by: MathWorks Simulink Team

Tags ode, physics, simulink

1

Solution

31

Size

1

Solution

31

Size

Model a mass spring system

Created by: MathWorks Simulink Team

Tags ode, physics, simulink

1

Solution

20

Size

1

Solution

20

Size

Counting pulses in a signal

Created by: MathWorks Simulink Team

Tags simulink

1

Solution

54

Size

1

Solution

54

Size

Add damping to a mass spring system

Created by: MathWorks Simulink Team

Tags ode, physics, simulink

1

Solution

35

Size

1

Solution

35

Size

Make a full wave rectifier

Created by: MathWorks Simulink Team

Tags simulink, waveforms, rectifier

1

Solution

29

Size

1

Solution

29

Size

Make a half wave rectifier

Created by: MathWorks Simulink Team

Tags simulink, waveforms, rectifier

1

Solution

17

Size

1

Solution

17

Size

Produce a sine wave

Created by: MathWorks Simulink Team

Tags trigonometry, simulink

1

Solution

7

Size

1

Solution

7

Size

Add offset to a signal

Created by: MathWorks Simulink Team

Tags simulink

2

Solutions

12

Size

2

Solutions

12

Size

Add a block to a model

Created by: MathWorks Simulink Team

Tags simulink

1

Solution

12

Size

1

Solution

12

Size

Produce a cosine wave

Created by: MathWorks Simulink Team

Tags trigonometry, simulink

2

Solutions

7

Size

2

Solutions

7

Size

Connect blocks in a model

Created by: MathWorks Simulink Team

Tags simulink

1

Solution

7

Size

1

Solution

7

Size

Problem 29. Nearest Numbers

Created by: Cody Team

Tags vectors, distance

3

Solutions

70

Size

3

Solutions

70

Size

Problem 1658. Simple equation: Annual salary

Created by: matlab.zyante.com

Tags easy, basics, salary

1

Solution

14

Size

1

Solution

14

Size

Problem 9. Who Has the Most Change?

Created by: Cody Team

Tags indexing, stupid, notice the rignt sequence of money!

3

Solutions

24

Size

3

Solutions

24

Size

Problem 42. Find the alphabetic word product

Created by: Cody Team

Tags matlab

3

Solutions

18

Size

3

Solutions

18

Size

Problem 94. Target sorting

Created by: Cody Team

Tags sorting, matlab

3

Solutions

27

Size

3

Solutions

27

Size

Problem 129. All capital?

Created by: AMITAVA BISWAS

Tags string, basic matlab

2

Solutions

18

Size

2

Solutions

18

Size

Problem 157. The Hitchhiker's Guide to MATLAB

Created by: the cyclist

Tags "douglas adams", douglas adams, fun

2

Solutions

13

Size

2

Solutions

13

Size

Problem 34. Binary numbers

Created by: Cody Team

Tags matlab

3

Solutions

22

Size

3

Solutions

22

Size

Problem 60. The Goldbach Conjecture

Created by: Cody Team

Tags primes

1

Solution

66

Size

1

Solution

66

Size

Problem 20. Summing digits

Created by: Cody Team

Tags strings, sum

1

Solution

18

Size

1

Solution

18

Size

Problem 32. Most nonzero elements in row

Created by: Cody Team

Tags matrices

4

Solutions

19

Size

4

Solutions

19

Size

Problem 25. Remove any row in which a NaN appears

Created by: Cody Team

Tags matlab 101, siam

1

Solution

19

Size

1

Solution

19

Size

Problem 141. Solve the Sudoku Row

Created by: @bmtran (Bryant Tran)

Tags sudoku, solve, logic

2

Solutions

23

Size

2

Solutions

23

Size

Problem 123. Tell me the slope

Created by: AMITAVA BISWAS

Tags slope, basic matlab, retardation

1

Solution

16

Size

1

Solution

16

Size

Problem 121. surface of a spherical planet

Created by: AMITAVA BISWAS

Tags planet, basic matlab

1

Solution

15

Size

1

Solution

15

Size

Problem 76. De-dupe

Created by: Cody Team

Tags matlab

6

Solutions

23

Size

6

Solutions

23

Size

Problem 62. Elapsed Time

Created by: Cody Team

Tags time

1

Solution

20

Size

1

Solution

20

Size

Problem 115. Distance walked 1D

Created by: AMITAVA BISWAS

Tags walk, basic matlab

1

Solution

16

Size

1

Solution

16

Size

Problem 22. Remove the vowels

Created by: Cody Team

Tags regexp, siam

3

Solutions

15

Size

3

Solutions

15

Size

Problem 148. Factorize THIS, buddy

Created by: the cyclist

Tags easy prime, basic matlab

1

Solution

17

Size

1

Solution

17

Size

Problem 247. Arrange Vector in descending order

Created by: Vishwanathan Iyer

Tags sorting, vector, basic matlab

1

Solution

13

Size

1

Solution

13

Size

Problem 125. Remove DC

Created by: AMITAVA BISWAS

Tags acdc, poor_test_suite

1

Solution

13

Size

1

Solution

13

Size

Problem 314. Find the sum of the elements in the "second" diagonal

Created by: Roy Fahn

Tags matrix, sum, basic matlab

1

Solution

14

Size

1

Solution

14

Size

Problem 262. Swap the input arguments

Created by: Steve Eddins

Tags matlab 101, swap, basic matlab

1

Solution

8

Size

1

Solution

8

Size

Problem 180. Omit columns averages from a matrix

Created by: Roy Fahn

Tags columns, matrix

1

Solution

23

Size

1

Solution

23

Size

Problem 158. Is my wife right? Now with even more wrong husband

Created by: the cyclist

Tags wife right husband wrong

1

Solution

10

Size

1

Solution

10

Size

1 – 50 of 83