在Java中将字符串转换为10位整数

Question

I have this assignment which should check whether a Triangle is Isosceles, Scalene, Equilateral, Right-Angled.

I am required to use only integers which are less or equal to 2,147,483,647 (or 2^31-1 in other words). I am obliged to use Linux and its Terminal to enter values and get results.

There is no problem with the output when I enter 1 to 9-digit integers, but if I want to conduct a test with a 10-digit integers such as 2^31-1, then I get a result which is not appropriate...

Here is a fragment of my code:

public static void main (String[] args)
{
    int a,b,c;
    a = Integer.parseInt(args[0]);
    b = Integer.parseInt(args[1]);
    c = Integer.parseInt(args[2]);
}

Could anyone suggest me how to deal with this issue?

Answer 1

I don't know.. but I tried running your code, with BASH + JAVA and I don't see any problem with the output.

Here is the screenshot.

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Ok now to solve the real problem(this must register at an emotional level) of if some triangle is actually an equilateral triangle, or scalene triangle or isosceles triangle or a right angle triangle.

To solve a problem, write down the functional logic involved in the problem

1. Equilateral triangle :- A triangle for which, all three sides are equal
2. Isosceles triangle :- A triangle for which, two of the three sides are equal
3. Scalene triangle :- A triangle for which, no sides are equal

Now think of the constraints

1. You can only use integers
2. Input sent as arguments

Now for writing the program since you're done analyzing

public class BufferProblem{
   public static void main(String[] args){ 
     int a, b, c;
     a = Integer.parseInt(args[0]);
     b = Integer.parseInt(args[1]);
     c = Integer.parseInt(args[2]);

     if ((a == b) && (b == c)) { System.out.println("It is an equilateral triangle"); }
     else if (a == b || b == c || c == a) { System.out.println("It is an isosceles triangle"); }
     else if ((a != b) && (b != c) && (c != a)) { System.out.println("It is a scalene triangle");}

   }
}