Python Basics簡単

Smallest element in an array

Detailed guide and Python implementation for the 'Smallest element in an array' problem.

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簡単

Write a function find_smallest(arr) that finds and returns the smallest element in the given array arr using recursion. The function takes a list of integers as input and returns a single integer — the minimum value in the list.

制約
  • 1 <= len(arr) <= 1000
  • -10^6 <= arr[i] <= 10^6

Example 1
Input
arr = [1, 4, 3, -5, 15]
Output
-5
Explanation

Among all elements, -5 is the smallest.

Example 2
Input
arr = [10, 20, 5, 8]
Output
5
Explanation

5 is the minimum value in the array.

Example 3
Input
arr = [-3, -7, -1, -9]
Output
-9
Explanation

Among all negative numbers, -9 is the smallest.

Need a Hint?
Consider using Recursion-specific data structures like sets or heaps.
Edge Cases to Watch
  • Empty input structures
  • Single element inputs
  • Large numerical bounds

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