【例34.3】统计数字字符个数

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	patricklai7528	343ms	4 MiB	Python 3	119 Bytes	2025-1-13 17:47:49
AC	宇軒	345ms	4 MiB	Python 3	105 Bytes	2024-12-20 2:27:30
AC	kygod	350ms	4.1 MiB	Python 3	164 Bytes	2024-12-24 23:42:27
AC	QQQ	353ms	4.2 MiB	Python 3	101 Bytes	2025-1-13 20:52:35