Index exceeds the number of array elements (3).

n = input('What"s your ""favorite"" number? ')
twiceYourFavoritePlusOne = 2*n + 1
myFavorites = linspace(2,8,3)
yourFavorites = 2:3:6
myFavorites(yourFavorites)
yourFavorites(myFavorites) = 6
myFavoritesSquares = myFavorites.*myFavorites
if (rem(n,2) == 0)
    disp('even')
else
    disp('odd')
end
ages4review = [19 7 4 2; 14 89 62 50; 2 3 2 12]

Answer 1

[Chunru]

What is the purpose of your code?

n = 4; %input('What"s your ""favorite"" number? ')
twiceYourFavoritePlusOne = 2*n + 1

twiceYourFavoritePlusOne = 9

myFavorites = linspace(2,8,3)

myFavorites = 1×3

2 5 8

yourFavorites = 2:3:6

yourFavorites = 1×2

2 5

myFavorites(yourFavorites)

Index exceeds the number of array elements (3).

% myFavorites has only 3 numbers.  yourFavourites has index 2 and 5.  
% The index 5 exceeds the number of elements in myFavorites.

yourFavorites(myFavorites) = 6
myFavoritesSquares = myFavorites.*myFavorites
if (rem(n,2) == 0)
    disp('even')
else
    disp('odd')
end
ages4review = [19 7 4 2; 14 89 62 50; 2 3 2 12]

[Pimpawee Khumsup]

how to fix it?

[Chunru]

You need to elaborate what you want to do with the code. Correct the grammar is not meaningful.

[Walter Roberson]

myFavorites(yourFavorites)

Maybe you wanted to use

intersect(myFavorites, yourFavorites)

[Pimpawee Khumsup]

There are invalid dots in the code. Use a debug mode and have to modify the code to be correct.

[Walter Roberson]

The only dots I see in the code are in

myFavoritesSquares = myFavorites.*myFavorites

but that is not invalid.