jenner9212/coding_practice

C++을 사용하여 코딩 연습

#include <bits/stdc++.h>

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long long (%lld)          = -9,223,372,036,854,775,808 ~  9,223,372,036,854,775,807

unsigned long long (%llu) =                          0 ~ 18,446,744,073,709,551,615

int %d, char %c, char * (string) %s, double %lf, long long %lld

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std::cout, std::cin --> printf(), scanf()

// ex) string -> c_str()
printf("%s", str.c_str())

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사용하는 헤더 및 함수

• algorithm

  • unique
  • find
  • *max_element
  • sort
  • next_permutation
  • fill / fill_n

  // ex) 2D vector
  fill(matrix.begin(), matrix.end(), vector<int> (MAX, n)); | fill_n(matrix.begin(), MAX, vector<int> (MAX, n));

  // ex) 2D array
  fill(arr[0], arr[MAX - 1] + MAX, n);

  fill(arr[0], arr[MAX], n); | fill_n(arr[0], MAX * MAX, n);

  // ex) 1D vector
  fill(matrix.begin(), matrix.end(), n); | fill_n(matrix.begin(), MAX, n);

  // ex) 1D array
  fill(arr, arr+MAX, n); | fill_n(arr, MAX, n);

• queue

  • queue
  • priority queue

• sstream

  • stringstream

• functional

  • greater
  • less

• cctype

  • isdigit()
  • isalpha()

• iomanip

  • fixed
  • setprecision()

• numeric

  • accumulate

  init -> 0(int), 0.0(double), 0LL(long long)

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• solution

  • 유클리드 호제법
  • 에라토스테네스의 체 (소수판별 수가 많을 때)

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• Read File

  freopen("sample_input.txt", "r", stdin);