Core Java · interview question
If a cart contains prices {10, 20, 30}, what is the final value of 'total' after executing the following loop with an off-by-one error?
Multiple choiceHardchapter-1-curatedpremiumcore-javaloops-and-iteration
int[] cart = {10, 20, 30}; int total = 0; for (int i = 0; i <= cart.length; i++) { total += cart[i]; }Answer and explanation
Correct answer
B. ArrayIndexOutOfBoundsException
Why
The loop tries to access an index equal to cart.length, which does not exist and causes an ArrayIndexOutOfBoundsException.
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