DSA 部分簡單

插入排序

“插入排序”問題的詳細指南和 Python 實作。

問題陳述

簡單

寫一個函數 insertion_sort(arr),使用插入排序演算法依升序對整數列表 arr 進行排序,並傳回排序後的列表。

約束條件
  • 0 <= len(arr) <= 500
  • -10^4 <= arr[i] <= 10^4

範例

Example 1
Input
arr = [4, 3, 2, 10, 12, 1, 5, 6]
Output
[1, 2, 3, 4, 5, 6, 10, 12]
Explanation

Elements are sequentially inserted into their correct positions in the sorted portion of the array.

Example 2
Input
arr = [3, 1, 2]
Output
[1, 2, 3]
Explanation

1 is inserted before 3 -> [1, 3, 2], then 2 is inserted between 1 and 3 -> [1, 2, 3].

Need a Hint?
考慮使用特定於排序的資料結構,例如集合或堆。
Edge Cases to Watch
  • 空輸入結構
  • 單元素輸入
  • 大數值範圍

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