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How to print ONCE if there are multiple correct answers? (MATLAB)

So I have arr = randi([0,20],20,1). I want to show: If there are numbers less than 5, fprintf('Yes\n') only once. Im using a for loop (for i = 1 : length(arr)) and indexing it.

Solution

  • You can use a break statement upon finding the first value under 5 and printing the Yes statement.

    Using a break Statement:

    arr = randi([0,20],20,1);

for i = 1: length(arr)
    if arr(i) < 5
    fprintf("Yes\n");
    break;
    end
end

    Extension:

    By Using any() Function:

    Alternatively, if you'd like to concise it down without the need for a for-loop the any() function can be used to determine if any values within the array meet a condition in this case arr < 5.

    arr = randi([0,20],20,1);

if(any(arr < 5))
    fprintf("Yes\n");

end

    By Using a While Loop:

    Check = 0;
arr = randi([0,20],20,1);

i = 1;
while (Check == 0 && i < length(arr))    
if arr(i) < 5
    fprintf("Yes\n");
    Check = 1;
end

i = i + 1;
end