参考代码:
import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); print(input()); } public static String[] input(){ Scanner sc = new Scanner(System.in); int n = sc.nextInt(); // 吸收空格 sc.nextLine(); String[] st = new String[n]; for (int i = 0; i < n; i++) { String str = sc.nextLine(); st[i] = str.replaceAll(" ",",");; } return st; } public static void print(String[] st){ for (int i = 0; i < st.length; i++) { System.out.println(st[i]); } } }
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