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  • 【水】ACdream LSS

    一道水题但是我错了好惨

    罚时罚到最后一名

    Problem Description

    Time flies, four years passed, colleage is over. When I am about to leave, a xuemei ask me an ACM  problem, but I can't solve it, I am 功力尽失.  Please help me so that I won't lose face in front of xuemei!

     

    Give you a string , you should find the longest substring which is of the same character. 

    Input

    First line there is a T , represents the test cases.

    next T lines  will be T strings.

    the length of every string is less than 100

    all the characters of the strings will be lowercase letters

    Output

    for each test case output a number

    Sample Input

    1
    a

    Sample Output

    1
     
     
    翻译其实很简单:求给出字符串中最长的相同字符组成的连续子串。。。
    可是我一开始居然写成最多字符的个数,跪翻了:
    cin>>str;
       len=strlen(str);
       for (i=0;i<=len-1;i++) 
        {
          t=int(str[i]-'a'+1);
          num[t]++;
        }
       best=0; b=0;
       for (i=1;i<=26;i++) {if (num[i]>best) {best=num[i];}}
       cout<<best;

    明显错的节奏

    这个是我10分钟的代码,似乎是正解:.

    cin>>str; i=0; best=0;
       while (i<strlen(str)) 
       {
            t=i;
            ch=str[i];
            while ((t<=strlen(str))&&(str[t]==ch)) t++;
            best=max(best,t-i);
            i=t+1;
       }
       cout<<best<<endl;

    然而没过肯定有问题

    可是我怎么测都没发现

    感谢暖阳(fpcsong)巨大牛。。一个数据搞定:

    1

    abbc

    正解应该是2,可是我答案是1.。。。。。

    其实原因在这儿:

    i=t+1

    应该写:

    i=t

    哭死啊。。。。。。。。。。。

    位处理的时候一定要多看几遍。。。。。。。。

     上正解

    代码

    #include<iostream>
    #include<cstdlib>
    #include<cstdio>
    #include<cstring>
    using namespace std;
    char str[200];
    char ch;
    int len,best,i,t,b,j,all;
    int main()
    {
       cin>>all;
       for (j=1;j<=all;j++){
       cin>>str; i=0; best=0;
       while (i<strlen(str)) 
       {
            t=i;
            ch=str[i];
            while ((t<=strlen(str))&&(str[t]==ch)) t++;
            best=max(best,t-i);
            i=t;
       }
       cout<<best<<endl;
    }
       return 0;
    }

    结果

    RunID用户问题判决时间内存长度提交时间
    14306 seekdreamer D Accepted 0 MS 1672 KB C++ 388 B 2014-06-08 23:13:06

    再次感谢耐心帮我调出来的暖阳(fpcsong)巨大牛。。。

    noip忘记取模的痛
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  • 原文地址:https://www.cnblogs.com/seekdreamer/p/3777008.html
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