12. 查找数组中元素的个数

状态	递交者	时间	内存	语言	代码	递交时间
AC	zhenghaochen001	2ms	6.4 MiB	C++14(O2)	261 Bytes	2025-7-24 11:44:48
AC	chenxingyu001	2ms	6.4 MiB	C++14(O2)	368 Bytes	2025-7-24 19:36:36
AC	chenkaixun001	2ms	6.2 MiB	C++17	309 Bytes	2025-1-8 11:52:01
AC	gaozien001	2ms	6.3 MiB	C++14(O2)	325 Bytes	2025-7-29 13:24:21
AC	geqilan001	2ms	6.5 MiB	C++14(O2)	331 Bytes	2025-7-26 10:11:32
AC	wangrunjia001	2ms	6.3 MiB	C++14(O2)	314 Bytes	2025-6-14 17:28:27
AC	zhuhaotian001	2ms	6.3 MiB	C++14(O2)	452 Bytes	2025-7-31 17:13:02
AC	fushangyang001	2ms	6.2 MiB	C++17	423 Bytes	2025-1-7 19:07:17
AC	xrqmzl	2ms	6.3 MiB	C++17(O2)	378 Bytes	2025-1-3 15:34:22
AC	changjunrui001	3ms	6.4 MiB	C++14(O2)	229 Bytes	2025-7-15 17:07:10
AC	xuchenhao001	3ms	6.4 MiB	C++14(O2)	221 Bytes	2025-7-24 21:13:12
AC	chenkaixun001	3ms	6.3 MiB	C++17	206 Bytes	2025-1-7 15:55:27
AC	fengjiaxuan001	3ms	6.2 MiB	C++14(O2)	249 Bytes	2025-6-20 18:47:27
AC	yaoyixuan001	3ms	6.3 MiB	C++14(O2)	358 Bytes	2025-7-30 11:20:41
AC	jinhaiyan002	3ms	6.2 MiB	C++14(O2)	244 Bytes	2025-6-14 18:40:05
AC	zhangyifan001	3ms	6.3 MiB	C++17	289 Bytes	2025-3-10 20:40:55
AC	zhuhaoyu001	3ms	6.3 MiB	C++14(O2)	386 Bytes	2025-7-31 17:11:58
AC	zhuyujie001	5ms	6.3 MiB	C++14(O2)	246 Bytes	2025-7-1 20:16:17
AC	lzc001	5ms	6.2 MiB	C++14(O2)	288 Bytes	2025-6-17 22:11:31