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leetcode-problemset/leetcode-cn/problem (Chinese)/乘法表中第k小的数 [kth-smallest-number-in-multiplication-table].html
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<p>几乎每一个人都用&nbsp;<a href="https://baike.baidu.com/item/%E4%B9%98%E6%B3%95%E8%A1%A8">乘法表</a>。但是你能在乘法表中快速找到第<code>k</code>小的数字吗?</p>
<p>给定高度<code>m</code>&nbsp;、宽度<code>n</code> 的一张&nbsp;<code>m * n</code>的乘法表,以及正整数<code>k</code>,你需要返回表中第<code>k</code>&nbsp;小的数字。</p>
<p><strong>&nbsp;1</strong></p>
<pre>
<strong>输入:</strong> m = 3, n = 3, k = 5
<strong>输出:</strong> 3
<strong>解释:</strong>
乘法表:
1 2 3
2 4 6
3 6 9
第5小的数字是 3 (1, 2, 2, 3, 3).
</pre>
<p><strong>例 2</strong></p>
<pre>
<strong>输入:</strong> m = 2, n = 3, k = 6
<strong>输出:</strong> 6
<strong>解释:</strong>
乘法表:
1 2 3
2 4 6
第6小的数字是 6 (1, 2, 2, 3, 4, 6).
</pre>
<p><strong>注意:</strong></p>
<ol>
<li><code>m</code>&nbsp;<code>n</code>&nbsp;的范围在 [1, 30000] 之间。</li>
<li><code>k</code> 的范围在 [1, m * n] 之间。</li>
</ol>