### Problem Groups The Community group contains problems contributed by Cody players. The Cody Challenge group contains problems created by the Cody administrator.

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# Community

Problems submitted by members of the MATLAB Central community.

172Solvers

### Back to basics 10 - Max Float

Created by Alan Chalker

172Solvers

### Back to basics 12 - Input Arguments

Created by Alan Chalker

169Solvers

### Back to basics 1 - Saving

Created by Alan Chalker

169Solvers

### Compute a dot product of two vectors x and y

Created by Evgeny

168Solvers

### Determine Whether an array is empty

Created by Yudong Zhang

168Solvers

### Circle area using pi

Created by matlab.zyante.com

161Solvers

### Back to basics 21 - Matrix replicating

Created by Alan Chalker

160Solvers

### Convert a vector into a number

Created by Doug Hull

158Solvers

### Number of 1s in the Binary Representation of a Number

Created by @bmtran

155Solvers

### So many choices

Created by the cyclist

155Solvers

### Multiply a column by a row

Created by Amitava Biswas

155Solvers

153Solvers

Created by Bart

149Solvers

### pressure to dB?

Created by Amitava Biswas

149Solvers

### Back to basics 23 - Triangular matrix

Created by Alan Chalker

148Solvers

### give nth decimal place of pi

Created by Amitava Biswas

148Solvers

### Arrange vector in ascending order

Created by Ismail shaikh

147Solvers

### Number of Horns on a unicorn!

Created by Patrick Schuster

147Solvers

### Back to basics 9 - Indexed References

Created by Alan Chalker

142Solvers

### Number of 1s in a binary string

Created by Srivardhini

142Solvers

### Back to basics 14 - Keywords

Created by Alan Chalker

140Solvers

### Back to basics 7 - Equal NaNs

Created by Alan Chalker

139Solvers

### Whether the input is vector?

Created by Sangeeta

139Solvers

### Rotate a Matrix

Created by Yudong Zhang

138Solvers

### Filter AC, pass DC

Created by Amitava Biswas

137Solvers

### Find the largest value in the 3D matrix

Created by Bruce Raine

131Solvers

### Replicate elements in vectors

Created by Jean-Marie SAINTHILLIER

131Solvers

### Create a row array using double colon operator

Created by matlab.zyante.com

130Solvers

Created by Chris

130Solvers

### 2 b | ~ 2 b

Created by Alan Chalker

126Solvers

### Fahrenheit to Celsius using multiple statements

Created by matlab.zyante.com

125Solvers

### Generate a vector like 1,2,2,3,3,3,4,4,4,4

Created by Binbin Qi

### Problem Group

121Solvers

Created by Sourav Mondal

119Solvers

### Set the array elements whose value is 13 to 0

Created by Aurelien Queffurust

118Solvers

### Magic!

Created by the cyclist

118Solvers

Created by Marco

117Solvers

Created by James

115Solvers

### Project Euler: Problem 7, Nth prime

Created by Doug Hull

113Solvers

### Back to basics 15 - classes

Created by Alan Chalker

113Solvers

### Create a square matrix of multiples

Created by Bruce Raine

112Solvers

### Back to basics 20 - singleton dimensions

Created by Alan Chalker

110Solvers

### Count photos

Created by Amitava Biswas

109Solvers

### Sorting

Created by Yvan Lengwiler

109Solvers

### Back to basics 17 - white space

Created by Alan Chalker

108Solvers

### Distance walked 3D

Created by Amitava Biswas

107Solvers

### Back to basics 25 - Valid variable names

Created by Alan Chalker

107Solvers

### Make a random, non-repeating vector.

Created by Doug Hull

106Solvers

### Lose control

Created by Amitava Biswas

106Solvers

### Who is the smartest MATLAB programmer?

Created by Jeremy

104Solvers

### Check to see if a Sudoku Puzzle is Solved

Created by @bmtran