以下为几种不同类型的简单 Python 算法示例： ### 贪心算法：找出列表中的最大数字 ```python def find_largest_number(numbers): largest_number = numbers[0] for number in numbers: if number > largest_number: largest_number = number return largest_number # 测试代码 numbers = [1, 2, 3, 4, 5] print(find_largest_number(numbers)) # 输出: 5 ``` ### 加密算法：简单替换加密与解密 ```python def encrypt(message): encrypted_message = "" for char in message: # 进行简单替换，将字符替换为其后面的第二个字符 encrypted_char = chr(ord(char) + 2) encrypted_message += encrypted_char return encrypted_message def decrypt(encrypted_message): decrypted_message = "" for char in encrypted_message: # 进行简单替换，将字符替换为其前面的第二个字符 decrypted_char = chr(ord(char) - 2) decrypted_message += decrypted_char return decrypted_message # 加密示例 message = "Hello, World!" encrypted_message = encrypt(message) print("加密后的消息：", encrypted_message) # 解密示例 decrypted_message = decrypt(encrypted_message) print("解密后的消息：", decrypted_message) ``` ### 冒泡排序算法 ```python def bubbleSort(arr): n = len(arr) for i in range(n): swapped = False for j in range(0, n - i - 1): if arr[j] > arr[j + 1]: arr[j], arr[j + 1] = arr[j + 1], arr[j] swapped = True if not swapped: break return arr arr = [64, 34, 25, 12, 22, 11, 90] sorted_arr = bubbleSort(arr) print(sorted_arr) ```