[BOJ/Step5] 1차원 배열 (C++)

https://www.acmicpc.net/problem/10818 : 최소, 최대

#include <iostream>
#include <algorithm>
using namespace std;

int main(void){
    int n = 0;
    cin >> n;
    int *num = new int[n];
    for (int i = 0; i < n; i++){
        int a;
        cin >> a;
        num[i] = a;
    }
    sort(num, num + n);
    cout << num[0] << " " << num[n-1] << endl;
    delete[] num;
}

-> algorithm 헤더파일에 sort 함수 사용

 

https://www.acmicpc.net/problem/2562 : 최댓값

#include <iostream>
using namespace std;

int main(void){
    int max = -1, num = 0;
    for(int i=0; i<9; i++){
        int a;
        cin >> a;
        if(max < a){
            max = a;
            num = i+1;
        }
    }
    cout << max << endl;
    cout << num << endl;
}

리스트 안쓰고.. 그냥.....

 

https://www.acmicpc.net/problem/2577 : 숫자의 개수

#include <iostream>
using namespace std;

int main(void){
    int a, b, c;
    int arr[10] = {0};
    cin >> a >> b >> c;
    int num = a * b * c;
    while(num != 0){
        arr[num%10]++;
        num /= 10;
    }
    for(int i=0; i<10; i++){
        cout << arr[i] << endl;
    }
}

 

https://www.acmicpc.net/problem/3052 : 나머지

#include <iostream>
using namespace std;

int main(void){
    int arr[42] = {0};
    for(int i=0; i<10; i++){
        int num;
        cin >> num;
        arr[num%42]++;
    }
    int count = 0;
    for(int i=0; i<42; i++){
        if(arr[i]!=0) count++;
    }
    cout << count;
}

 

https://www.acmicpc.net/problem/1546 : 평균

#include <iostream>
using namespace std;

int main(void){
    int n, max = 0;
    double total = 0;
    cin >> n;
    double *score = new double[n];
    double *n_score = new double[n];
    for(int i = 0; i < n; i++){
        double s;
        cin >> s;
        score[i] = s;
        max = (s > max) ? s : max;
    }
    for(int i = 0; i < n; i++){
        n_score[i] = score[i] * 100 / max ;
        total += n_score[i];
    }
    cout << total/n << endl;
}

 

https://www.acmicpc.net/problem/8958 : OX 퀴즈

#include <iostream>
using namespace std;

int main(void){
    int n;
    cin >> n;
    for(int i=0; i<n; i++){
        int total = 0, score = 0;
        string test;
        cin >> test;
        for (int i = 0; i < test.length(); i++){
            if(test[i] == 'O'){
                score += 1;
                total += score;
            }else{
                score = 0;
            }
        }
        cout << total << endl;
        total = 0, score = 0;
    }
}

 

https://www.acmicpc.net/problem/4344 : 평균은 넘겠지

#include <iostream>
using namespace std;

int main(void){
    int c;
    cin >> c;
    for(int i = 0; i < c; i++){
        int n;
        double total = 0;
        cin >> n;
        int *score = new int[n];
        for(int j=0; j<n; j++){
            cin >> score[j];
            total += score[j];
        }
        double avg = total / n;
        double m = 0;
        for(int j=0; j<n; j++){
            if(score[j] > avg)
                m += 1;
        }
        double per = m * 100 / n;
        printf("%.3f%%\n", per);
    }
}

 

 

 

하면 할수록 파이썬이 최고라는 생각만 드는걸.....?...... 파이썬 최고다...