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49 lines
1.7 KiB
HTML
49 lines
1.7 KiB
HTML
<p>Create a class <code>ArrayWrapper</code> that accepts an array of integers in its constructor. This class should have two features:</p>
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<ul>
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<li>When two instances of this class are added together with the <code>+</code> operator, the resulting value is the sum of all the elements in both arrays.</li>
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<li>When the <code>String()</code> function is called on the instance, it will return a comma separated string surrounded by brackets. For example, <code>[1,2,3]</code>.</li>
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</ul>
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<p> </p>
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<p><strong class="example">Example 1:</strong></p>
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<pre>
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<strong>Input:</strong> nums = [[1,2],[3,4]], operation = "Add"
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<strong>Output:</strong> 10
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<strong>Explanation:</strong>
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const obj1 = new ArrayWrapper([1,2]);
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const obj2 = new ArrayWrapper([3,4]);
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obj1 + obj2; // 10
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</pre>
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<p><strong class="example">Example 2:</strong></p>
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<pre>
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<strong>Input:</strong> nums = [[23,98,42,70]], operation = "String"
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<strong>Output:</strong> "[23,98,42,70]"
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<strong>Explanation:</strong>
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const obj = new ArrayWrapper([23,98,42,70]);
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String(obj); // "[23,98,42,70]"
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</pre>
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<p><strong class="example">Example 3:</strong></p>
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<pre>
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<strong>Input:</strong> nums = [[],[]], operation = "Add"
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<strong>Output:</strong> 0
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<strong>Explanation:</strong>
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const obj1 = new ArrayWrapper([]);
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const obj2 = new ArrayWrapper([]);
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obj1 + obj2; // 0
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</pre>
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<p> </p>
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<p><strong>Constraints:</strong></p>
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<ul>
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<li><code>0 <= nums.length <= 1000</code></li>
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<li><code>0 <= nums[i] <= 1000</code></li>
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<li><code>Note: nums is the array passed to the constructor</code></li>
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</ul>
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