Question at position 1 Bubble Sort compares elements until:The largest is on the leftEvery element is in correct positionThe smallest is on the rightAll elements are removedClear my selection

Question

Question at position 1 Bubble Sort compares elements until:The largest is on the leftEvery element is in correct positionThe smallest is on the rightAll elements are removedClear my selection

BlackTom AI · Accepted Answer

Bubble sort repeatedly swaps adjacent elements so that larger values "bubble" toward the end; it stops when the list is fully ordered (every element is in its correct position).

1) Relevant knowledge points and concepts
- Bubble sort compares adjacent pairs and swaps them if they are in the wrong order.
- After one full pass through the list, the largest element among the unsorted portion moves to its correct final position at the right end.
- The algorithm continues passes until no swaps are needed (or after n−1 passes), which indicates the entire array is sorted.

2) Complete reasoning process step by step
- Because each pass places at least one element into its correct position on the right, repeated passes progressively reduce the unsorted portion.
- The natural termination condition is that a full pass produces no swaps, meaning all adjacent pairs are in order; therefore every element is already in its correct place.

3) Intermediate steps (example calculation)
Start: [4, 2, 3, 1]
Pass 1:
- Compare 4 & 2 → swap → [2, 4, 3, 1]
- Compare 4 & 3 → swap → [2, 3, 4, 1]
- Compare 4 & 1 → swap → [2, 3, 1, 4] (4 now in correct rightmost position)
Pass 2:
- Compare 2 & 3 → no swap → [2, 3, 1, 4]
- Compare 3 & 1 → swap → [2, 1, 3, 4]
- Remaining largest of unsorted portion (3) now in its position
Pass 3:
- Compare 2 & 1 → swap → [1, 2, 3, 4]
Pass 4:
- No swaps → algorithm stops because every element is in correct position

4) Why the correct answer is correct
- The algorithm’s stopping criterion is that the sequence is fully sorted; that is, every element occupies its correct sorted position. This matches the option “Every element is in correct position.”

5) Why other options are incorrect
- “The largest is on the left”: incorrect — bubble sort moves the largest to the rightmost position after a pass, not left.
- “The smallest is on the right”: incorrect — the smallest tends to move left, not right.
- “All elements are removed”: incorrect — no elements are removed; bubble sort reorders elements in place.

6) Conclusion
The correct termination condition is that every element is in its correct position, confirming the provided answer: Every element is in correct position.

Question at position 1 Bubble Sort compares elements until:The largest is on the leftEvery element is in correct positionThe smallest is on the rightAll elements are removedClear my selection单项选择题

类似问题

In bubble sort, what is the main operation performed repeatedly?

Question at position 5 The algorithm works by repeatedly:Reversing the listCopying the listRemoving valuesChecking values and swapping them if neededClear my selection

Question at position 4 The inner loop is responsible for:Checking if the list is emptyChecking each pair and swapping if neededCounting list lengthReversing the listClear my selection

Question at position 3 Why does Bubble Sort use "n-i-1" in the inner loop?To track memory usageTo sort backwardsTo avoid checking values already bubbled to the rightTo make the code shorterClear my selection

Question at position 2 What is the main purpose of the Bubble Sort algorithm?To sort values in a listTo reverse a listTo compress dataTo search itemsClear my selection

What will the code print?

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