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46 lines
1.9 KiB
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46 lines
1.9 KiB
HTML
<p>You are given an integer array <code>nums</code>. You have an integer array <code>arr</code> of the same length with all values set to <code>0</code> initially. You also have the following <code>modify</code> function:</p>
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<img alt="" src="https://assets.leetcode.com/uploads/2020/07/10/sample_2_1887.png" style="width: 573px; height: 294px;" />
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<p>You want to use the modify function to convert <code>arr</code> to <code>nums</code> using the minimum number of calls.</p>
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<p>Return <em>the minimum number of function calls to make </em><code>nums</code><em> from </em><code>arr</code>.</p>
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<p>The test cases are generated so that the answer fits in a <strong>32-bit</strong> signed integer.</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> nums = [1,5]
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<strong>Output:</strong> 5
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<strong>Explanation:</strong> Increment by 1 (second element): [0, 0] to get [0, 1] (1 operation).
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Double all the elements: [0, 1] -> [0, 2] -> [0, 4] (2 operations).
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Increment by 1 (both elements) [0, 4] -> [1, 4] -> <strong>[1, 5]</strong> (2 operations).
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Total of operations: 1 + 2 + 2 = 5.
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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 = [2,2]
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<strong>Output:</strong> 3
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<strong>Explanation:</strong> Increment by 1 (both elements) [0, 0] -> [0, 1] -> [1, 1] (2 operations).
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Double all the elements: [1, 1] -> <strong>[2, 2]</strong> (1 operation).
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Total of operations: 2 + 1 = 3.
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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 = [4,2,5]
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<strong>Output:</strong> 6
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<strong>Explanation:</strong> (initial)[0,0,0] -> [1,0,0] -> [1,0,1] -> [2,0,2] -> [2,1,2] -> [4,2,4] -> <strong>[4,2,5]</strong>(nums).
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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 <= nums.length <= 10<sup>5</sup></code></li>
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<li><code>0 <= nums[i] <= 10<sup>9</sup></code></li>
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</ul>
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