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  1.     public class Main {		
  2. 		public static class Term {
  3. 			private final int coefficient;
  4. 			private final int exponent;
  5.  
  6. 			public Term (final int coefficient,final int exponent) {
  7. 				this.coefficient = coefficient;
  8. 				this.exponent = exponent;			
  9. 			}
  10.  
  11. 			@Override
  12. 			public String toString() {
  13. 				final String sign = getSign (coefficient);
  14. 				final String number = getNumber (coefficient);
  15. 				final String exponentStr = getExponentStr (coefficient, exponent);
  16.  
  17. 				return String.format ("%s%s%s",sign, number, exponentStr);
  18. 			}
  19.  
  20. 			private String getExponentStr(final int coefficient, final int exponent) {
  21. 				if (coefficient == 0 || exponent == 0) {
  22. 					return "";
  23. 				}
  24. 				if (exponent == 1) {
  25. 					return "x";
  26. 				}
  27. 				return "x^" + exponent;
  28. 			}
  29.  
  30. 			private String getNumber(final int value) {
  31. 				final int absValue = Math.abs(value);
  32.  
  33. 				return absValue == 1 ? "" : Integer.toString (absValue);
  34. 			}
  35.  
  36. 			private String getSign(final int value) {
  37. 				return value < 0 ? "-" : "";
  38. 			}
  39. 		}
  40.  
  41. 		public static void main(String[] args) throws Exception {
  42. 			System.out.println(new Term (0, 2));
  43. 			System.out.println(new Term (1, 2));
  44. 			System.out.println(new Term (-1, 2));
  45. 			System.out.println(new Term (5, 1));
  46. 			System.out.println(new Term (5, 0));
  47. 		}
  48. 	}
  49.  
Success #stdin #stdout 0.07s 215552KB
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stdin
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Standard input is empty
stdout
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0
x^2
-x^2
5x
5
https://ideone.com/MeYB3E
language:
Java (12.0.1)
created:
12 years ago
visibility:
public

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