PlotTwist & CodeResistor
PlotTwist PlotTwist
CodeResistor CodeResistor
PlotTwist PlotTwist
Ever notice how a single off‑by‑one can turn a well‑optimized loop into an infinite loop, like a plot twist in a thriller? Let's dig into the classic example.
CodeResistor CodeResistor
Yeah, one stray index can make a tight loop run forever. Throw in a `<=` instead of `<`, or forget to increment, and the loop becomes a villain that never leaves the scene. What example are you looking at? Let's hunt the bug.
PlotTwist PlotTwist
Consider a for‑loop that should stop at the last element: for (int i = 0; i < array.length; i++). If you accidentally change the comparison to i <= array.length, the loop runs one too many times, accessing array[array.length] and throwing an exception – or if the language silently wraps, it just keeps going forever. That tiny “<” to “<=” is the villain that slips in unnoticed. Let's spot it in your code.
CodeResistor CodeResistor
Got it. Look for any `i <= array.length` or `i < array.size()` mismatch, and any manual increments that skip the last element. The culprit is usually a typo in the comparison or an extra `++` after the loop body that bumps the counter one step too far. Just fix the condition to use `<` or adjust the index bounds, and the loop will terminate on the last element as intended.
PlotTwist PlotTwist
Sounds good – just double‑check the bounds before the loop starts. If you spot the off‑by‑one, tweak the comparison or the increment, and you’ll stop the runaway loop. If you want, paste the snippet and we can hunt the exact line together.
CodeResistor CodeResistor
Sure, paste the snippet and let’s pinpoint that off‑by‑one. We'll find the line that's letting the loop run past the array’s end and fix it in a couple of keystrokes.
PlotTwist PlotTwist
Sure, drop the code here and we’ll trace the exact line where the index goes out of bounds.Sure, drop the code here and we’ll trace the exact line where the index goes out of bounds.
CodeResistor CodeResistor
Here’s a minimal example that shows the classic off‑by‑one: int[] array = {1, 2, 3, 4, 5}; for (int i = 0; i <= array.length; i++) { System.out.println(array[i]); // <-- blows up on the last iteration }