【例4.1】交换两个数的位置

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	熊钞宇	3ms	504 KiB	C++14(O2)	178 Bytes	2025-8-17 14:44:00
AC	杨锦莲xly2025	3ms	760 KiB	C++14(O2)	102 Bytes	2025-7-4 11:53:23
AC	周利华	3ms	504 KiB	C++14(O2)	116 Bytes	2025-8-17 9:30:57
AC	taoruiguo120	3ms	504 KiB	C++14	113 Bytes	2025-7-17 19:06:42
AC	duobei	3ms	504 KiB	C++14	123 Bytes	2025-5-29 23:10:23
AC	sage2012	3ms	504 KiB	C++14(O2)	176 Bytes	2025-9-29 22:26:06
AC	班振浩	3ms	536 KiB	C++14(O2)	146 Bytes	2025-9-21 19:47:50
AC	邵馨羽qcx	3ms	504 KiB	C++14(O2)	130 Bytes	2025-7-7 10:03:22
AC	string_dbr	3ms	764 KiB	C++14(O2)	121 Bytes	2024-7-11 12:59:32