摘要:
package com.demo.StringBuiler; public class day01 { public static void main(String[] args) { //StringBuilder:提高字符串效率 long start = System.currentTimeMi 阅读全文
摘要:
字符替换: package com.demo.cutOut; import java.util.Scanner; public class Replace { public static void main(String[] args) { Scanner sc = new Scanner(Syst 阅读全文