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  1. import java.util.*;
  2.  
  3. public class Main {
  4.     public static void main(String args[]) {
  5.         Scanner sc = new Scanner(System.in);
  6.         while (sc.hasNextLine()) {
  7.             String s[] = sc.nextLine().replace("i", "").split(" ");
  8.             int x1 = 1, x2 = 1;
  9.             if (s[0].charAt(0) == '-') {
  10.                 s[0] = s[0].substring(1, s[0].length());
  11.                 x1 *= -1;
  12.             }
  13.             if (s[0].indexOf("+") != -1) {
  14.                 x1 *= Integer.parseInt(s[0].split("\\+")[0]);
  15.                 x2 *= Integer.parseInt(s[0].split("\\+")[1]);
  16.             } else {
  17.                 x1 *= Integer.parseInt(s[0].split("-")[0]);
  18.                 x2 *= Integer.parseInt(s[0].split("-")[1]) * (-1);
  19.             }
  20.             int y1 = 1, y2 = 1;
  21.             if (s[2].charAt(0) == '-') {
  22.                 s[2] = s[2].substring(1, s[2].length());
  23.                 y1 *= -1;
  24.             }
  25.             if (s[2].indexOf('+') != -1) {
  26.                 y1 *= Integer.parseInt(s[2].split("\\+")[0]);
  27.                 y2 *= Integer.parseInt(s[2].split("\\+")[1]);
  28.             } else {
  29.                 y1 *= Integer.parseInt(s[2].split("-")[0]);
  30.                 y2 *= Integer.parseInt(s[2].split("-")[1]) * (-1);
  31.             }
  32.             if (s[1].equals("+")) {
  33.                 x1 = x1 + y1;
  34.                 x2 = x2 + y2;
  35.             } else {
  36.                 x1 = x1 - y1;
  37.                 x2 = x2 - y2;
  38.             }
  39.             String c = (x2 >= 0 ? "+" : "");
  40.             System.out.printf("%d%s%di\n", x1, c, x2);
  41.         }
  42.     }
  43. }
Success #stdin #stdout 0.1s 35556KB
comments (?)
stdin
copy 
2+3i + 7-4i
12-4i - 5-4i
-1-1i - -1-1i
5-2i - -7+12i
stdout
copy 
9-1i
7+0i
0+0i
12-14i
https://ideone.com/juuJNC
language:
Java (HotSpot 12)
created:
3 years ago
visibility:
public

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