谁能给我看一个简单的 C++ 尾递归函数?
Can someone show me a simple tail-recursive function in C++?
为什么尾递归更好,甚至更好?
Why is tail recursion better, if it even is?
除了尾递归还有哪些递归?
What other kinds of recursion are there besides tail recursion?
一个简单的尾递归函数:
A simple tail recursive function:
unsigned int f( unsigned int a ) {
if ( a == 0 ) {
return a;
}
return f( a - 1 ); // tail recursion
}
尾递归基本上是在:
而且它并不是更好",除非一个好的编译器可以删除递归,将其转换为循环.这可能更快,并且肯定会节省堆栈使用量.GCC 编译器可以进行这种优化.
And it's not "better", except in the sense that a good compiler can remove the recursion, transforming it into a loop. This may be faster and will certainly save on stack usage. The GCC compiler can do this optimisation.
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