Total of all unique numbers
Write a program for the following input and expected output.
Input: Comma separated numbers as string
Output: Total of all unique numbers
Notes:
- The input string can have invalid characters, spaces, or empty values.
- The maximum length of the input can be 50K characters. So make sure that your solution is optimized for performance.
- Please use features of Java 8 or higher.
- Follow all the coding practices and guidelines.
Example:
Input: "1,3,1,2,3"
Output: 6
Example:
Input: "1,,1,a,3"
Output: 4
Code (Java 15):-
import java.util.*;
public class Main
{
public static int getTotal(String input)
{
HashMap<Integer,Integer> dic=new HashMap<Integer,Integer>();
int sum=0;
String[] str=input.split(",",0);
for(int i=0;i<str.length;i++)
{
try{
int val=Integer.parseInt(str[i]);
if(!dic.containsKey(val))
{
dic.put(val,1);
sum+=val;
}
}
catch(Exception e){
}
}
return sum;
}
// Driver function
public static void main(String[] args) {
Scanner sc= new Scanner(System.in);
String input=sc.next();
System.out.println(getTotal(input));
}
}
Output:-
1,a,1,2,3
6
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