HackerRank>Algorithm>Warmup>birthdayCakeCandles

birthdayCakeCandles.cpp

#include <bits/stdc++.h>

using namespace std;

vector<string> split_string(string);

void insertionSort(vector<int>& arr) {
  int key, j;

  for (int i = 1; i < arr.size(); i++) {
    key = arr[i];

    for (j = i - 1; j >= 0; j--) {
      if (arr[j] > key) {
        arr[j + 1] = arr[j];
      } else {
        break;
      }
    }
    arr[j + 1] = key;
  }
}

// Complete the birthdayCakeCandles function below.
int birthdayCakeCandles(vector<int> arr) {
    insertionSort(arr);

    int heighest = arr[arr.size() - 1];
    int count = 1;

    for(int i = 0; i < arr.size() - 1; i++) {
        if (heighest == arr[i]) {
            count++;
        }
    }

    return count;
}

int main()
{
    ofstream fout(getenv("OUTPUT_PATH"));

    int ar_count;
    cin >> ar_count;
    cin.ignore(numeric_limits<streamsize>::max(), '\n');

    string ar_temp_temp;
    getline(cin, ar_temp_temp);

    vector<string> ar_temp = split_string(ar_temp_temp);

    vector<int> ar(ar_count);

    for (int i = 0; i < ar_count; i++) {
        int ar_item = stoi(ar_temp[i]);

        ar[i] = ar_item;
    }

    int result = birthdayCakeCandles(ar);

    fout << result << "\n";

    fout.close();

    return 0;
}

vector<string> split_string(string input_string) {
    string::iterator new_end = unique(input_string.begin(), input_string.end(), [] (const char &x, const char &y) {
        return x == y and x == ' ';
    });

    input_string.erase(new_end, input_string.end());

    while (input_string[input_string.length() - 1] == ' ') {
        input_string.pop_back();
    }

    vector<string> splits;
    char delimiter = ' ';

    size_t i = 0;
    size_t pos = input_string.find(delimiter);

    while (pos != string::npos) {
        splits.push_back(input_string.substr(i, pos - i));

        i = pos + 1;
        pos = input_string.find(delimiter, i);
    }

    splits.push_back(input_string.substr(i, min(pos, input_string.length()) - i + 1));

    return splits;
}