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/*
(有序区,无序区)。在无序区里找一个最小的元素跟在有序区的后面。对数组:比较得多,换得少。
选择排序思路:
1. 在未排序序列中找到最小(大)元素,存放到排序序列的起始位置
2. 从剩余未排序元素中继续寻找最小(大)元素,然后放到已排序序列的末尾
3. 以此类推,直到所有元素均排序完毕
*/
// 选择排序
void SelectionSort(vector<int>& v) {
int min, len = v.size();
for (int i = 0; i < len - 1; ++i) {
min = i;
for (int j = i + 1; j < len; ++j) {
if (v[j] < v[min]) { // 标记最小的
min = j;
}
}
if (i != min) // 交换到前面
swap(v[i], v[min]);
}
}
// 模板实现
template<typename T>
void Selection_Sort(std::vector<T>& arr) {
int len = arr.size();
for (int i = 0; i < len - 1; i++) {
int min = i;
for (int j = i + 1; j < len; j++)
if (arr[j] < arr[min])
min = j;
if(i != min)
std::swap(arr[i], arr[min]);
}
}
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