There will be various needs in the project, and there will also be a need to clean and clean the data, etc.
Example 1: Match the sum of numbers in the data. Or the sum of numbers, or the sum of numbers. etc.
Simply record it: the code is as follows:
/*
* Remove the serial number
* */
public static void test1() throws IOException { /* String str = "5. Which of the following 5 are advantages ( )"; System.out.println(str); String str1 = str.replaceAll ("[\\pP\\p{Punct}]", ""); String str01 = str.replaceAll("^[1-9]d[.]", ""); System.out.println(" str1:" + str1);
String str2 = str.replaceAll("[//pP]", "");
System.out.println("str2:" + str2);
String str3 = str.replaceAll("[//p{P}]", "");
System.out.println("str3:" + str3);*/
String path1 = "E:\\20230518\\Remove the serial number at the beginning of the test question\\tb.txt";//The read file path
String path2