| 5 | 5 | |
| 6 | 6 | export class Triangle { |
| 7 | 7 | /** |
| 8 | | * @param {...number} sides |
| 8 | * Creates a Triangle instance with the given side lengths. |
| 9 | * @param {...number} sides - The lengths of the three sides of the triangle. |
| 9 | 10 | */ |
| 10 | 11 | constructor(...sides) { |
| 11 | | throw new Error('Remove this line and implement the function'); |
| 12 | // Edge Case: Not enough sides provided |
| 13 | if (sides.length !== 3) { |
| 14 | throw new Error('A triangle must have exactly 3 sides'); |
| 15 | } |
| 16 | |
| 17 | // Edge Case: Non-numeric values |
| 18 | if (sides.some(side => typeof side !== 'number')) { |
| 19 | throw new Error('All sides must be numbers'); |
| 20 | } |
| 21 | |
| 22 | // Edge Case: NaN values |
| 23 | if (sides.some(side => isNaN(side))) { |
| 24 | throw new Error('Sides cannot be NaN'); |
| 25 | } |
| 26 | |
| 27 | // Edge Case: Infinite values |
| 28 | if (sides.some(side => !isFinite(side))) { |
| 29 | throw new Error('Sides must be finite numbers'); |
| 30 | } |
| 31 | |
| 32 | this.sides = sides; |
| 12 | 33 | } |
| 13 | 34 | |
| 14 | 35 | /** |
| 15 | | * @returns {boolean} |
| 36 | * Checks if the triangle is equilateral (all sides equal). |
| 37 | * @returns {boolean} True if the triangle is equilateral, false otherwise. |
| 38 | * Handled Edge Cases: Invalid triangle, zero/negative sides, all sides equal |
| 16 | 39 | */ |
| 17 | 40 | get isEquilateral() { |
| 18 | | throw new Error('Remove this line and implement the function'); |
| 41 | // Edge Case: Invalid triangle |
| 42 | if (!this._isValidTriangle()) { |
| 43 | return false; |
| 44 | } |
| 45 | |
| 46 | const [a, b, c] = this.sides; |
| 47 | |
| 48 | // Edge Case: Zero or negative sides |
| 49 | if (a <= 0 || b <= 0 || c <= 0) { |
| 50 | return false; |
| 51 | } |
| 52 | |
| 53 | return a === b && b === c; |
| 19 | 54 | } |
| 20 | 55 | |
| 21 | 56 | /** |
| 22 | | * @returns {boolean} |
| 57 | * Checks if the triangle is isosceles (at least two sides equal). |
| 58 | * @returns {boolean} True if the triangle is isosceles, false otherwise. |
| 59 | * Handled Edge Cases: Invalid triangle, zero/negative sides, at least two sides equal |
| 23 | 60 | */ |
| 24 | 61 | get isIsosceles() { |
| 25 | | throw new Error('Remove this line and implement the function'); |
| 62 | // Edge Case: Invalid triangle |
| 63 | if (!this._isValidTriangle()) { |
| 64 | return false; |
| 65 | } |
| 66 | |
| 67 | const [a, b, c] = this.sides; |
| 68 | |
| 69 | // Edge Case: Zero or negative sides |
| 70 | if (a <= 0 || b <= 0 || c <= 0) { |
| 71 | return false; |
| 72 | } |
| 73 | |
| 74 | return a === b || b === c || a === c; |
| 26 | 75 | } |
| 27 | 76 | |
| 28 | 77 | /** |
| 29 | | * @returns {boolean} |
| 78 | * Checks if the triangle is scalene (all sides different). |
| 79 | * @returns {boolean} True if the triangle is scalene, false otherwise. |
| 80 | * Handled Edge Cases: Invalid triangle, zero/negative sides, all sides different |
| 30 | 81 | */ |
| 31 | 82 | get isScalene() { |
| 32 | | throw new Error('Remove this line and implement the function'); |
| 83 | // Edge Case: Invalid triangle |
| 84 | if (!this._isValidTriangle()) { |
| 85 | return false; |
| 86 | } |
| 87 | |
| 88 | const [a, b, c] = this.sides; |
| 89 | |
| 90 | // Edge Case: Zero or negative sides |
| 91 | if (a <= 0 || b <= 0 || c <= 0) { |
| 92 | return false; |
| 93 | } |
| 94 | |
| 95 | return a !== b && b !== c && a !== c; |
| 96 | } |
| 97 | |
| 98 | /** |
| 99 | * Helper method to check if the sides form a valid triangle. |
| 100 | * @returns {boolean} True if the sides form a valid triangle, false otherwise. |
| 101 | * Handled Edge Cases: Triangle inequality violation |
| 102 | */ |
| 103 | _isValidTriangle() { |
| 104 | const [a, b, c] = this.sides; |
| 105 | |
| 106 | // Edge Case: Triangle inequality violation |
| 107 | return (a + b >= c) && (b + c >= a) && (a + c >= b); |
| 33 | 108 | } |
| 34 | 109 | } |