HDU 1004 Let the Balloon Rise

http://acm.hdu.edu.cn/showproblem.php?pid=1004

题意:有n个气球,找出出现次数最多的颜色。

题解:练习map……其实用strcmp()也可以。

 1 #include <iostream>
 2 #include <cstring>
 3 #include <cstdio>
 4 #include <cstdlib>
 5 #include <cmath>
 6 #include <string>
 7 #include <vector>
 8 #include <list>
 9 #include <map>
10 #include <queue>
11 #include <stack>
12 #include <bitset>
13 #include <algorithm>
14 #include <numeric>
15 #include <functional>
16 #include <set>
17 #include <fstream>
18 
19 using namespace std;
20 
21 int main()
22 {
23     map<string, int> bal;
24     map<string, int>::iterator ite;
25     int n;
26     string s;
27     while ((scanf("%d",&n))!=EOF&&n!=0) {
28         int maxn=-1;
29         bal.clear();
30         for (int i=0; i<n; i++) {
31             cin>>s;
32             bal[s]++;
33         }
34         for (ite=bal.begin(); ite!=bal.end(); ite++) {
35             if (maxn<ite->second) {
36                 maxn=ite->second;
37             }
38         }
39         for (ite=bal.begin(); ite!=bal.end(); ite++) {
40             if (maxn==ite->second) {
41                 cout<<ite->first<<endl;
42             }
43         }
44     }
45     return 0;
46 }
 1 #include <iostream>
 2 #include <cstring>
 3 #include <cstdio>
 4 #include <cstdlib>
 5 #include <cmath>
 6 #include <string>
 7 #include <vector>
 8 #include <list>
 9 #include <map>
10 #include <queue>
11 #include <stack>
12 #include <bitset>
13 #include <algorithm>
14 #include <numeric>
15 #include <functional>
16 #include <set>
17 #include <fstream>
18 
19 using namespace std;
20 
21 const int maxn=1010;
22 
23 int main()
24 {
25     int n;
26     char s[maxn][20];
27     int nu[maxn];
28     while (scanf("%d",&n)!=EOF&&n!=0) {
29         memset(nu, 0, sizeof(nu));
30         int max=0;
31         for (int i=0; i<n; i++) {
32             scanf("%s",s[i]);
33             for (int j=0; j<i; j++) {
34                 if (strcmp(s[i], s[j])==0) {
35                     nu[i]++;
36                 }
37             }
38         }
39         int t=0;
40         for (int i=0; i<n; i++) {
41             if (max<nu[i]) {
42                 max=nu[i];
43                 t=i;
44             }
45         }
46         printf("%s
",s[t]);
47     }
48     return 0;
49 }
原文地址:https://www.cnblogs.com/der-z/p/3690090.html