[C++][Implementation] Apple and Orange

https://www.hackerrank.com/challenges/apple-and-orange/problem

 

 

#include <bits/stdc++.h>

using namespace std;

string ltrim(const string &);
string rtrim(const string &);
vector<string> split(const string &);

/*
 * Complete the 'countApplesAndOranges' function below.
 *
 * The function accepts following parameters:
 *  1. INTEGER s
 *  2. INTEGER t
 *  3. INTEGER a
 *  4. INTEGER b
 *  5. INTEGER_ARRAY apples
 *  6. INTEGER_ARRAY oranges
 */

void countApplesAndOranges(int s, int t, int a, int b, vector<int> apples, vector<int> oranges) {
    int apple_falls = 0;
    int orange_falls = 0;
    
    for (int i = 0; i < apples.size(); i++) {
        if ((a + apples[i] >= s) and (a + apples[i] <= t)) {
            apple_falls++;
        }
    }
    
    for (int i = 0; i < oranges.size(); i++) {
        if ((b + oranges[i] >= s) and (b + oranges[i] <= t)) {
            orange_falls++;
        }
    }
    
    cout << apple_falls << '\n' << orange_falls << endl;
}

int main()
{
    string first_multiple_input_temp;
    getline(cin, first_multiple_input_temp);

    vector<string> first_multiple_input = split(rtrim(first_multiple_input_temp));

    int s = stoi(first_multiple_input[0]);

    int t = stoi(first_multiple_input[1]);

    string second_multiple_input_temp;
    getline(cin, second_multiple_input_temp);

    vector<string> second_multiple_input = split(rtrim(second_multiple_input_temp));

    int a = stoi(second_multiple_input[0]);

    int b = stoi(second_multiple_input[1]);

    string third_multiple_input_temp;
    getline(cin, third_multiple_input_temp);

    vector<string> third_multiple_input = split(rtrim(third_multiple_input_temp));

    int m = stoi(third_multiple_input[0]);

    int n = stoi(third_multiple_input[1]);

    string apples_temp_temp;
    getline(cin, apples_temp_temp);

    vector<string> apples_temp = split(rtrim(apples_temp_temp));

    vector<int> apples(m);

    for (int i = 0; i < m; i++) {
        int apples_item = stoi(apples_temp[i]);

        apples[i] = apples_item;
    }

    string oranges_temp_temp;
    getline(cin, oranges_temp_temp);

    vector<string> oranges_temp = split(rtrim(oranges_temp_temp));

    vector<int> oranges(n);

    for (int i = 0; i < n; i++) {
        int oranges_item = stoi(oranges_temp[i]);

        oranges[i] = oranges_item;
    }

    countApplesAndOranges(s, t, a, b, apples, oranges);

    return 0;
}

string ltrim(const string &str) {
    string s(str);

    s.erase(
        s.begin(),
        find_if(s.begin(), s.end(), not1(ptr_fun<int, int>(isspace)))
    );

    return s;
}

string rtrim(const string &str) {
    string s(str);

    s.erase(
        find_if(s.rbegin(), s.rend(), not1(ptr_fun<int, int>(isspace))).base(),
        s.end()
    );

    return s;
}

vector<string> split(const string &str) {
    vector<string> tokens;

    string::size_type start = 0;
    string::size_type end = 0;

    while ((end = str.find(" ", start)) != string::npos) {
        tokens.push_back(str.substr(start, end - start));

        start = end + 1;
    }

    tokens.push_back(str.substr(start));

    return tokens;
}