03 2022 档案

正则表达式判断计算式是否符合格式
摘要：public static boolean isTrue(String str){ int flag=0; if (str.matches("(\\(*\\d+[+/*-])+((\\(*(\\d+[+/*-])*\\d+\\)*)[+/*-])*\\d+\\)*")) { for (int i = 阅读全文
posted @ 2022-03-23 01:46 -QAQ- 阅读(138) 评论(0) 推荐(0)