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33 lines
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33 lines
1.1 KiB
HTML
<p>You are given an integer array <code>arr</code>. Sort the integers in the array in ascending order by the number of <code>1</code>'s in their binary representation and in case of two or more integers have the same number of <code>1</code>'s you have to sort them in ascending order.</p>
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<p>Return <em>the array after sorting it</em>.</p>
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<p> </p>
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<p><strong>Example 1:</strong></p>
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<pre>
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<strong>Input:</strong> arr = [0,1,2,3,4,5,6,7,8]
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<strong>Output:</strong> [0,1,2,4,8,3,5,6,7]
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<strong>Explantion:</strong> [0] is the only integer with 0 bits.
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[1,2,4,8] all have 1 bit.
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[3,5,6] have 2 bits.
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[7] has 3 bits.
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The sorted array by bits is [0,1,2,4,8,3,5,6,7]
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</pre>
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<p><strong>Example 2:</strong></p>
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<pre>
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<strong>Input:</strong> arr = [1024,512,256,128,64,32,16,8,4,2,1]
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<strong>Output:</strong> [1,2,4,8,16,32,64,128,256,512,1024]
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<strong>Explantion:</strong> All integers have 1 bit in the binary representation, you should just sort them in ascending order.
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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>1 <= arr.length <= 500</code></li>
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<li><code>0 <= arr[i] <= 10<sup>4</sup></code></li>
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</ul>
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