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leetcode-problemset/leetcode-cn/problem (Chinese)/使数组和能被 K 整除的最少操作次数 [minimum-operations-to-make-array-sum-divisible-by-k].html
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<p>给你一个整数数组 <code>nums</code> 和一个整数 <code>k</code>。你可以执行以下操作任意次:</p>
<ul>
<li>选择一个下标&nbsp;<code>i</code>,并将 <code>nums[i]</code> 替换为 <code>nums[i] - 1</code></li>
</ul>
<p>返回使数组元素之和能被 <code>k</code> 整除所需的<strong>最小</strong>操作次数。</p>
<p>&nbsp;</p>
<p><strong class="example">示例 1</strong></p>
<div class="example-block">
<p><strong>输入:</strong> <span class="example-io">nums = [3,9,7], k = 5</span></p>
<p><strong>输出:</strong> <span class="example-io">4</span></p>
<p><strong>解释:</strong></p>
<ul>
<li><code>nums[1] = 9</code> 执行 4 次操作。现在 <code>nums = [3, 5, 7]</code></li>
<li>数组之和为 15可以被 5 整除。</li>
</ul>
</div>
<p><strong class="example">示例 2</strong></p>
<div class="example-block">
<p><strong>输入:</strong> <span class="example-io">nums = [4,1,3], k = 4</span></p>
<p><strong>输出:</strong> <span class="example-io">0</span></p>
<p><strong>解释:</strong></p>
<ul>
<li>数组之和为 8已经可以被 4 整除。因此不需要操作。</li>
</ul>
</div>
<p><strong class="example">示例 3</strong></p>
<div class="example-block">
<p><strong>输入:</strong> <span class="example-io">nums = [3,2], k = 6</span></p>
<p><strong>输出:</strong> <span class="example-io">5</span></p>
<p><strong>解释:</strong></p>
<ul>
<li><code>nums[0] = 3</code> 执行 3 次操作,对 <code>nums[1] = 2</code> 执行 2 次操作。现在 <code>nums = [0, 0]</code></li>
<li>数组之和为 0可以被 6 整除。</li>
</ul>
</div>
<p>&nbsp;</p>
<p><strong>提示:</strong></p>
<ul>
<li><code>1 &lt;= nums.length &lt;= 1000</code></li>
<li><code>1 &lt;= nums[i] &lt;= 1000</code></li>
<li><code>1 &lt;= k &lt;= 100</code></li>
</ul>