HDOJ 5500 Reorder the Books(规律)
来源:互联网 发布:奥巴马出生证明知乎 编辑:程序博客网 时间:2024/05/05 09:49
Reorder the Books
Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 131072/131072 K (Java/Others)
Total Submission(s): 932 Accepted Submission(s): 513
Problem Description
dxy has a collection of a series of books called "The Stories of SDOI",There aren(n≤19) books in this series.Every book has a number from 1 to n .
dxy puts these books in a book stack with the order of their numbers increasing from top to bottom. dxy takes great care of these books and no one is allowed to touch them.
One day Evensgn visited dxy's home, because dxy was dating with his girlfriend, dxy let Evensgn stay at home himself. Evensgn was curious about this series of books.So he took a look at them. He found out there was a story about "Little E&Little Q". While losing himself in the story,he disrupted the order of the books.
Knowing that dxy would be back soon,Evensgn needed to get the books ordered again.But because the books were too heavy.The only thing Evensgn could do was to take out a book from the book stack and and put it at the stack top.
Give you the order of the disordered books.Could you calculate the minimum steps Evensgn would use to reorder the books? If you could solve the problem for him,he will give you a signed book "The Stories of SDOI 9: The Story of Little E" as a gift.
dxy puts these books in a book stack with the order of their numbers increasing from top to bottom. dxy takes great care of these books and no one is allowed to touch them.
One day Evensgn visited dxy's home, because dxy was dating with his girlfriend, dxy let Evensgn stay at home himself. Evensgn was curious about this series of books.So he took a look at them. He found out there was a story about "Little E&Little Q". While losing himself in the story,he disrupted the order of the books.
Knowing that dxy would be back soon,Evensgn needed to get the books ordered again.But because the books were too heavy.The only thing Evensgn could do was to take out a book from the book stack and and put it at the stack top.
Give you the order of the disordered books.Could you calculate the minimum steps Evensgn would use to reorder the books? If you could solve the problem for him,he will give you a signed book "The Stories of SDOI 9: The Story of Little E" as a gift.
Input
There are several testcases.
There is an positive integerT(T≤30) in the first line standing for the number of testcases.
For each testcase, there is an positive integern in the first line standing for the number of books in this series.
Followedn positive integers separated by space standing for the order of the disordered books,theith integer stands for the ith book's number(from top to bottom).
Hint:
For the first testcase:Moving in the order ofbook3,book2,book1 ,(4,1,2,3)→(3,4,1,2)→(2,3,4,1)→(1,2,3,4) ,and this is the best way to reorder the books.
For the second testcase:It's already ordered so there is no operation needed.
There is an positive integer
For each testcase, there is an positive integer
Followed
Hint:
For the first testcase:Moving in the order of
For the second testcase:It's already ordered so there is no operation needed.
Output
For each testcase,output one line for an integer standing for the minimum steps Evensgn would use to reorder the books.
Sample Input
244 1 2 351 2 3 4 5
Sample Output
30
题意: 书的编号表示书应该在书柜中的位置,现在书柜中的书是乱的,要将书排好序。排序只能把书从原来位置放到最左边的位置上,问给出书的序列,排好序最低移动几次?
这一题半天没想出来,其实是求在数列中关于最大数的递增序列有多长len(这个序列中相邻的两个数差值为1),最
少移动次数就是n-len。
例如: 2 1 6 5 7 8 3 4 递增序列为6 7 8 最少移动次数就为 8-3
代码如下:
#include<cstdio>int a[20];int main(){int t,i,n,ans,p,len;scanf("%d",&t);while(t--){scanf("%d",&n);len=0;p=-1;for(i=1;i<=n;++i){scanf("%d",&a[i]);if(p<a[i]&&p+1!=a[i]){p=a[i];len=1;}if(p<a[i]&&p+1==a[i]){p=a[i];len++;}}printf("%d\n",n-len);}}
1 0
- HDOJ-5500Reorder the Books(规律)
- hdoj 5500 Reorder the Books 【规律】
- hdoj 5500Reorder the Books【规律】
- hdoj 5500 Reorder the Books 【规律题】
- HDOJ 5500 Reorder the Books(规律)
- HDOJ--5500--Reorder the Books
- hdoj 5500 Reorder the Books
- HDOJ 5500-Reorder the Books
- HDU 5500:Reorder the Books【规律】
- HDU 5500 Reorder the Books (规律)
- hdoj 5500 Reorder the Books 【好题】
- HDOJ 5500 Reorder the Books(贪心)
- hdoj--5500--Reorder the Books(技巧)
- hdoj 5500 Reorder the Books 【基础】
- HDOJ 5500 Reorder the Books(贪心)
- hdu 5500 Reorder the Books(规律题)
- HDU Reorder the Books 找规律
- hdoj Reorder the Books 5500 (技巧) 好题
- SWT获取windows系统窗口颜色
- xcodebuild和xcrun的打包
- ArcEngine保存mxd的方法
- C# ajax 文件提交
- sicily 1082. MANAGER
- HDOJ 5500 Reorder the Books(规律)
- Javascript执行效率小结
- 《黑客与画家》读后感————一堆个人谬论
- 匿名者黑客组织
- IP协议里的Time To Live(TTL)
- eclipse编辑器生命周期事件监听
- HDU 1043 双向广搜 八数码 康托展开 逆序数
- Poj-2653-Pick-up sticks
- 高级软件工程总结