Editorial for Victor's Various Adventures - Victor Climbs Mt. Everest
Remember to use this editorial only when stuck, and not to copy-paste code from it. Please be respectful to the problem author and editorialist.
Submitting an official solution before solving the problem yourself is a bannable offence.
Submitting an official solution before solving the problem yourself is a bannable offence.
Prerequisites: Loops, Input/Output, Arithmetic Operations
Observation
The way to solve this problem is very simple. Since the operators given is only + or -, we do not have to consider the order of operations.
Solution
For the sample case:
5 + 11 - 4 + 234.5 - 3 + 22.123Using Scanner, we can read the initial value 5.
After that, we can read the individual operators, and the values that is associated with them.
Operations:
+ 11- 4+ 234.5- 3+ 22.123
After we have calculated the final result, we can format the output using DecimalFormat
import java.text.DecimalFormat;
import java.util.Scanner;
/**
* @author Encodeous
* Solution to https://tssoj.ca/problem/victor1
*/
public class Victor1 {
public static void main(String[] args) {
// Read Input
Scanner sc = new Scanner(System.in);
// Read the initial value
double initialValue = sc.nextDouble();
// Apply operators until the '=' sign
while (true) {
String operator = sc.next();
// check if it is the '=' sign
if (operator.equals("="))
break;
// read and parse the number
String value = sc.next();
double doubleValue = Double.parseDouble(value);
// apply the operation
if (operator.equals("+")) {
initialValue += doubleValue;
} else {
initialValue -= doubleValue;
}
}
// format the output
DecimalFormat df = new DecimalFormat("0.0");
System.out.println(df.format(initialValue));
}
}
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