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47 lines
2.0 KiB
HTML
47 lines
2.0 KiB
HTML
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<p>Given an array <code>arr</code> and a chunk size <code>size</code>, return a <strong>chunked</strong> array. A <strong>chunked</strong> array contains the original elements in <code>arr</code>, but consists of subarrays each of length <code>size</code>. The length of the last subarray may be less than <code>size</code> if <code>arr.length</code> is not evenly divisible by <code>size</code>.</p>
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<p>You may assume the array is the output of <code>JSON.parse</code>. In other words, it is valid JSON.</p>
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<p>Please solve it without using lodash's <code>_.chunk</code> function.</p>
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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> arr = [1,2,3,4,5], size = 1
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<strong>Output:</strong> [[1],[2],[3],[4],[5]]
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<strong>Explanation:</strong> The arr has been split into subarrays each with 1 element.
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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> arr = [1,9,6,3,2], size = 3
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<strong>Output:</strong> [[1,9,6],[3,2]]
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<strong>Explanation:</strong> The arr has been split into subarrays with 3 elements. However, only two elements are left for the 2nd subarray.
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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> arr = [8,5,3,2,6], size = 6
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<strong>Output:</strong> [[8,5,3,2,6]]
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<strong>Explanation:</strong> Size is greater than arr.length thus all elements are in the first subarray.
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</pre>
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<p><strong class="example">Example 4:</strong></p>
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<pre>
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<strong>Input:</strong> arr = [], size = 1
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<strong>Output:</strong> []
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<strong>Explanation:</strong> There are no elements to be chunked so an empty array is returned.</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>arr is a valid JSON array</code></li>
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<li><code>2 <= JSON.stringify(arr).length <= 10<sup>5</sup></code></li>
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<li><code>1 <= size <= arr.length + 1</code></li>
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</ul>
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