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leetcode-problemset/leetcode-cn/problem (Chinese)/递归乘法 [recursive-mulitply-lcci].html
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<p>递归乘法。 写一个递归函数,不使用 * 运算符, 实现两个正整数的相乘。可以使用加号、减号、位移,但要吝啬一些。</p>
<p> <strong>示例1:</strong></p>
<pre>
<strong> 输入</strong>A = 1, B = 10
<strong> 输出</strong>10
</pre>
<p> <strong>示例2:</strong></p>
<pre>
<strong> 输入</strong>A = 3, B = 4
<strong> 输出</strong>12
</pre>
<p> <strong>提示:</strong></p>
<ol>
<li>保证乘法范围不会溢出</li>
</ol>