Java 获取多行输入

红太狼 2022-11-25 00:54 150阅读 0赞

*  数组，已知长度

public class test_0806_1 { 
        public static void main(String[] args) { 
            Scanner input = new Scanner(System.in);
            int lent = input.nextInt();
            int[] arr = new int[lent];
            for (int i = 0; i < lent; i++) { 
                arr[i] = input.nextInt();
            }
            for (int k : arr) { 
                System.out.print(k + " ");
            }
        }
    }

![20200806230212513.png_pic_center][]

*  整行字符串，已知行数

public class test_0806_2 { 
        public static void main(String[] args) { 
            Scanner input = new Scanner(System.in);
            int t_length = input.nextInt();
            String[] aa = new String[t_length];
            input.nextLine();
            for (int i = 0; i < t_length; i++) { 
                aa[i] = input.nextLine();
            }
            for (String str1 : aa) { 
                System.out.println(str1);
            }
        }
    }

![20200806230131419.png_pic_center][]

*  数组，不定长，读取整行分割

public class test_0813_01 { 
        public static void main(String[] args) { 
            Scanner input = new Scanner(System.in);
            String ss = input.nextLine();
            String[] str1 = ss.split(" ");
            int N = str1.length;
            int[] nums = new int[N];
            for (int i = 0; i < N; i++) { 
                nums[i] = Integer.parseInt(str1[i]);
            }
            for (int k : nums) { 
                System.out.println(k);
            }
        }
    }

![20200813223151552.png_pic_center][]

[20200806230212513.png_pic_center]: /images/20221124/b8267ef68a9d4b8aba6deeba743660ae.png
[20200806230131419.png_pic_center]: /images/20221124/b0b031e9a7d84572969c38d8867da5d1.png
[20200813223151552.png_pic_center]: /images/20221124/b7ef7c6a30d94b9d9895407daa1d91a7.png