ProblemSolving

Hacker Rank Problem Java BigDecimal Sorting Solution

Java’s BigDecimal class can handle arbitrary-precision signed decimal numbers. Let’s test your knowledge of them!

Given an array, s, of n  real number strings, sort them in descending order — but wait, there’s more! Each number must be printed in the exact same format as it was read from stdin, meaning that .1 is printed as .1, and 0.1 is printed as 0.1. If two numbers represent numerically equivalent values (e.g.,.1=0.1 ), then they must be listed in the same order as they were received as input).

Complete the code in the unlocked section of the editor below. You must rearrange array s‘s elements according to the instructions above.

Input Format

The first line consists of a single integer, n, denoting the number of integer strings.
Each line i of the n subsequent lines contains a real number denoting the value of  s-ith.

Constraints

  • Each s-ith has at most 300 digits.(so using BigDecimal)

Output

Reordering of array’s elements.

Sample Input

9
-100
50
0
56.6
90
0.12
.12
02.34
000.000

Sample Output

90
56.6
50
02.34
0.12
.12
0
000.000
-100

 Solution.java

import java.math.BigDecimal;
import java.util.*;
class Solution{
     public static void main(String []args){
        Scanner sc=new Scanner(System.in);
        int n=sc.nextInt();
        String[] s=new String[n+2];
//input        
        for(int i=0;i<n;i++){
            s[i]=sc.next();
        }
        sc.close();
//sorting
        Arrays.sort(s,0,n,new Comparator<object>(){
          public int compare(Object a1, Object a2) {
              BigDecimal bigDec1 = new BigDecimal((String)a1);
              BigDecimal bigDec2 = new BigDecimal((String)a2);
              return bigDec2.compareTo(bigDec1);
            }
            });
//output
        for(int i=0;i<n;i++){
          System.out.println(s[i]);
         } 
     }
}

Thank You.

11 thoughts on “Hacker Rank Problem Java BigDecimal Sorting Solution”

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