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Original file line number | Diff line number | Diff line change |
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// 快速排序 | ||
void QuickSort(vector<int>& v, int low, int high) { | ||
if (low >= high) // 结束标志 | ||
return; | ||
int first = low; // 低位下标 | ||
int last = high; // 高位下标 | ||
float key = v[first]; // 设第一个为基准 | ||
|
||
while (first < last) | ||
{ | ||
// 将比第一个小的移到前面 | ||
while (first < last && v[last] >= key) | ||
last--; | ||
if (first < last) | ||
v[first++] = v[last]; | ||
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||
// 将比第一个大的移到后面 | ||
while (first < last && v[first] <= key) | ||
first++; | ||
if (first < last) | ||
v[last--] = v[first]; | ||
} | ||
// 基准置位 | ||
v[first] = key; | ||
// 前半递归 | ||
QuickSort(v, low, first - 1); | ||
// 后半递归 | ||
QuickSort(v, first + 1, high); | ||
} |
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