→ alibuda174: 若另三選項5174236 5172436 5174326 36.226.147.151 10/15 21:25
→ alibuda174: 那麼根據條件a.循序輸入1234567 36.226.147.151 10/15 21:26
→ alibuda174: b. 輸出是517xxxx 36.226.147.151 10/15 21:26
→ alibuda174: 可求出deque的內容會是5123467 36.226.147.151 10/15 21:27
→ alibuda174: 所以可得知能輸出的排列為5172346 36.226.147.151 10/15 21:27