2019东南计算机复试题目

1. 求数组鞍点（一行最大且是一列最小）

#include 
#include 

using namespace std;

int main()
{
    int a[3][4];
    srand(time(0));
    for(int i = 0;i < 3; i++)
        for(int j = 0; j < 4; j++ )
            a[i][j] = rand();
    for(int i = 0;i < 3; i++)
    {
        for(int j = 0; j < 4; j++ )
            cout << a[i][j] << " ";
        cout << endl;
    }

    int max[3],min[4];
    for(int i = 0; i < 3; i++)
    {
        max[i] = a[i][0];
        for(int j = 1; j < 4; j++)
            if(a[i][j] > max[i])
                max[i] = a[i][j];
    }
    for(int j = 0; j < 4; j++)
    {
        min[j] = a[0][j];
        for(int i = 1; i < 3; i++ )
            if(a[i][j] < min[j])
                min[j] = a[i][j];
    }
    bool flag = false;
    for(int i = 0;i < 3; i++)
        for(int j = 0; j < 4; j++)
            if(a[i][j] == max[i] && a[i][j] == min[j])
            {
                cout << "a[" << i << "][" << j << "] = " << a[i][j] << endl;
                flag = true;
            }
    if(!flag)
        cout << "don't have" << endl;
    return 0;
}

2. 模板递归查找数组值并返回下标

#include 
#include 

using namespace std;

int main()
{
    int a[3][4];
    srand(time(0));
    for(int i = 0;i < 3; i++)
        for(int j = 0; j < 4; j++ )
            a[i][j] = rand();
    for(int i = 0;i < 3; i++)
    {
        for(int j = 0; j < 4; j++ )
            cout << a[i][j] << " ";
        cout << endl;
    }

    int max[3],min[4];
    for(int i = 0; i < 3; i++)
    {
        max[i] = a[i][0];
        for(int j = 1; j < 4; j++)
            if(a[i][j] > max[i])
                max[i] = a[i][j];
    }
    for(int j = 0; j < 4; j++)
    {
        min[j] = a[0][j];
        for(int i = 1; i < 3; i++ )
            if(a[i][j] < min[j])
                min[j] = a[i][j];
    }
    bool flag = false;
    for(int i = 0;i < 3; i++)
        for(int j = 0; j < 4; j++)
            if(a[i][j] == max[i] && a[i][j] == min[j])
            {
                cout << "a[" << i << "][" << j << "] = " << a[i][j] << endl;
                flag = true;
            }
    if(!flag)
        cout << "don't have" << endl;
    return 0;
}

3. 友元函数求最长公共单词

selfString.h

#ifndef SELFSRING_H
#define SELFSRING_H
#include 

using namespace std;

class selfSring
{
    friend void fun(const selfSring &,const selfSring &);
    public:
        selfSring(ifstream &);
        virtual ~selfSring();
    private:
        char *dataStr;
        int length;
};

#endif // SELFSRING_H

selfString.cpp

#include "selfSring.h"
#include 
#include 
#include 
using namespace std;
const static int SIZE = 1000;

selfSring::selfSring(ifstream &input)
{
    char *temp = new char[SIZE];
    input.getline(temp,SIZE);
    length = strlen(temp);
    dataStr = new char[length];
    strcpy(dataStr,temp);
    delete[] temp;
}
 void fun(const selfSring &str1,const  selfSring &str2)
{
    char s1[100][20] = {""};   //拆分str1[]句子，分解成单词保存在s1中
    char s2[100][20] = {""};    //拆分str2[]句子，
    char tstr1[str1.length];
    char tstr2[str2.length];
    strcpy(tstr1, str1.dataStr);
    strcpy(tstr2, str2.dataStr);

    char *temp;                      //分解句子str1
    temp = strtok(tstr1," .");
    int len1 = 0;
    while(temp)
    {
        strcpy(&s1[len1++][0],temp);
        temp = strtok(NULL," .");
    }
                                    //分解句子str2
    temp = strtok(tstr2," .");
    int len2 = 0;
    while(temp)
    {
        strcpy(&s2[len2][0],temp);
        len2++;
        temp = strtok(NULL," .");
    }
                                        //保留公共单词
    size_t maxlen = 0,count = 0;
    char common[100][20] = {""};
    char s[20];
    for(int i = 0; i <= len1; i++)     //小于等于长度
    {
        strcpy(s,&s1[i][0]);
        for(int j = 0; j <= len2; j++)  //小于等于长度
            if(strcmp(s,&s2[j][0]) == 0)
            {
                strcpy(&common[count++][0],s);
                if(maxlen < strlen(s))
                    maxlen = strlen(s);
            }
    }

                                            //输出最长公共单词
    for(int i = 0; i <= count; i++)
    {
        if(strlen(&common[i][0]) == maxlen)
            cout << &common[i][0] << " ";
    }
}
selfSring::~selfSring()
{
    delete[] dataStr;
}

main.cpp

#include 
#include 
#include "selfSring.h"

using namespace std;

int main()
{
    ifstream input("input.txt",ios::in);
    if(!input)
    {
        cerr << "file cannot be opened!!!" << endl;
        exit(1);
    }
    selfSring str1(input);
    selfSring str2(input);
    fun(str1,str2);
    input.close();
    return 0;
}

input.txt

hello world my friend mmnnbb
yes  mmnnbb am you my father friend