for

• The colon operator (or any array for that matter) can be used to generate index values for a loop.

• Example: Create an array with each element a(i,j) initialized to i+j. We allocate the array first to avoid array index out-of-bounds errors.

a = zeros(25, 15);

for r = 1 : 25

for c = 1 : 15

a(r,c) = r + c;

end

end

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