DNA Sorting(暴力+排序)
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DNA Sorting
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)
Total Submission(s): 3440 Accepted Submission(s): 1662
Problem Description
One measure of unsortedness'' in a sequence is the number of pairs of entries that are out of order with respect to each other. For instance, in the letter sequence
DAABEC”, this measure is 5, since D is greater than four letters to its right and E is greater than one letter to its right. This measure is called the number of inversions in the sequence. The sequence AACEDGG'' has only one inversion (E and D)--it is nearly sorted--while the sequence
ZWQM” has 6 inversions (it is as unsorted as can be–exactly the reverse of sorted).
You are responsible for cataloguing a sequence of DNA strings (sequences containing only the four letters A, C, G, and T). However, you want to catalog them, not in alphabetical order, but rather in order of sortedness'', from
most sorted” to “least sorted”. All the strings are of the same length.
This problem contains multiple test cases!
The first line of a multiple input is an integer N, then a blank line followed by N input blocks. Each input block is in the format indicated in the problem description. There is a blank line between input blocks.
The output format consists of N output blocks. There is a blank line between output blocks.
Input
The first line contains two integers: a positive integer n (0 < n <= 50) giving the length of the strings; and a positive integer m (1 < m <= 100) giving the number of strings. These are followed by m lines, each containing a string of length n.
Output
Output the list of input strings, arranged from most sorted'' to
least sorted”. If two or more strings are equally sorted, list them in the same order they are in the input file.
Sample Input
1
10 6
AACATGAAGG
TTTTGGCCAA
TTTGGCCAAA
GATCAGATTT
CCCGGGGGGA
ATCGATGCAT
Sample Output
CCCGGGGGGA
AACATGAAGG
GATCAGATTT
ATCGATGCAT
TTTTGGCCAA
TTTGGCCAAA
#include<iostream>#include<string>#include<stdio.h>#include<algorithm>using namespace std;struct node{ int indx ; int cnt ; string str;};bool mycmp(node a,node b){ if(a.cnt!=b.cnt) return a.cnt < b.cnt; return a.indx < b.indx;}int main(){ int ncase; scanf("%d",&ncase); while(ncase--) { string str; int len,w; scanf("%d%d",&len,&w); node nn[w+1]; for(int i =1;i<=w;i++) { cin>>str; nn[i].indx = i; nn[i].cnt =0; nn[i].str = str; for(int j=0;j<str.size();j++) { for(int h = j+1;h<str.size();h++) { if(str[h]<str[j]) nn[i].cnt++; } } } sort(nn+1,nn+1+w,mycmp); for(int i =1;i<=w;i++) cout<<nn[i].str<<endl; } return 0;}
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