Skip to main content

Java Stdin and Stdout II Code

In this challenge, you must read an integer, a double, and a String from stdin, then print the values according to the instructions in the Output Format section below. To make the problem a little easier, a portion of the code is provided for you in the editor.
Note: We recommend completing Java Stdin and Stdout I before attempting this challenge.
Input Format
There are three lines of input:
  1. The first line contains an integer.
  2. The second line contains a double.
  3. The third line contains a String.
Output Format
There are three lines of output:
  1. On the first line, print String: followed by the unaltered String read from stdin.
  2. On the second line, print Double: followed by the unaltered double read from stdin.
  3. On the third line, print Int: followed by the unaltered integer read from stdin.
To make the problem easier, a portion of the code is already provided in the editor.
Note: If you use the nextLine() method immediately following the nextInt() method, recall that nextInt() reads integer tokens; because of this, the last newline character for that line of integer input is still queued in the input buffer and the next nextLine() will be reading the remainder of the integer line (which is empty).
Sample Input
42
3.1415
Welcome to HackerRank's Java tutorials!
Sample Output
String: Welcome to HackerRank's Java tutorials!
Double: 3.1415
Int: 42
import java.util.Scanner;

public class Solution {

    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int i = scan.nextInt();
        double d = scan.nextDouble();
        scan.nextLine();// Consume newline left-over
        String s = scan.nextLine();
            
        // Write your code here.

        System.out.println("String: "+s);
        System.out.println("Double: " + d);
        System.out.println("Int: " + i);
    }
}

Comments

  1. why dont we directly declare string input like integer or double

    ReplyDelete

Post a Comment

Popular posts from this blog

Java Loops II print each element of our series as a single line of space-separated values.

We use the integers  ,  , and   to create the following series: You are given   queries in the form of  ,  , and  . For each query, print the series corresponding to the given  ,  , and   values as a single line of   space-separated integers. Input Format The first line contains an integer,  , denoting the number of queries.  Each line   of the   subsequent lines contains three space-separated integers describing the respective  ,  , and   values for that query. Constraints Output Format For each query, print the corresponding series on a new line. Each series must be printed in order as a single line of   space-separated integers. Sample Input 2 0 2 10 5 3 5 Sample Output 2 6 14 30 62 126 254 510 1022 2046 8 14 26 50 98 Explanation We have two queries: We use  ,  , and   to produce some series  : ... and so on. Once we hit  , we print the first ten terms as a single line of space-separate

Java Currency Formatter Solution

Given a  double-precision  number,  , denoting an amount of money, use the  NumberFormat  class'  getCurrencyInstance  method to convert   into the US, Indian, Chinese, and French currency formats. Then print the formatted values as follows: US: formattedPayment India: formattedPayment China: formattedPayment France: formattedPayment where   is   formatted according to the appropriate  Locale 's currency. Note:  India does not have a built-in Locale, so you must  construct one  where the language is  en  (i.e., English). Input Format A single double-precision number denoting  . Constraints Output Format On the first line, print  US: u  where   is   formatted for US currency.  On the second line, print  India: i  where   is   formatted for Indian currency.  On the third line, print  China: c  where   is   formatted for Chinese currency.  On the fourth line, print  France: f , where   is   formatted for French currency. Sample

Java Substring Comparisons

We define the following terms: Lexicographical Order , also known as  alphabetic  or  dictionary  order, orders characters as follows:  For example,  ball < cat ,  dog < dorm ,  Happy < happy ,  Zoo < ball . A  substring  of a string is a contiguous block of characters in the string. For example, the substrings of  abc  are  a ,  b ,  c ,  ab ,  bc , and  abc . Given a string,  , and an integer,  , complete the function so that it finds the lexicographically  smallest  and  largest substrings of length  . Input Format The first line contains a string denoting  . The second line contains an integer denoting  . Constraints  consists of English alphabetic letters only (i.e.,  [a-zA-Z] ). Output Format Return the respective lexicographically smallest and largest substrings as a single newline-separated string. Sample Input 0 welcometojava 3 Sample Output 0 ava wel Explanation 0 S