1. k← [n/2]
来源： NOIP题库
1. k← [n/2]
2. if L[k] > L[k-1] and L[k] > L[k+1]
3.then
4.else if L[k] > L[k-1] and L[k] < L[k+1]
5.then
6.else
来源： NOIP题库
1. k← [n/2]
2. if L[k] > L[k-1] and L[k] > L[k+1]
3.then
4.else if L[k] > L[k-1] and L[k] < L[k+1]
5.then
6.else