cpp_lib

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:heavy_check_mark: 2D-Array( $2$ 次元配列) (structure/2d_array.cpp)

なにこれ

入出力・宣言を簡潔に行える $2$ 次元配列.

コンストラクタ

メンバ関数

計算量

$H$ 行 $W$ 列の行列を扱うとする.

参考

Required by

Verified with

Code

#pragma once

#ifndef call_include
#define call_include
#include <bits/stdc++.h>
using namespace std;
#endif

template<typename T> struct v2d {
private:
	vector<vector<T>> m;

public:
	v2d() {}
	v2d(int h, int w) : m(h, vector<T>(w)) {}
	v2d(int h, int w, const T &init) : m(h, vector<T>(w, init)) {}
	v2d(const initializer_list<initializer_list<T>> m_init) : m(m_init.begin(), m_init.end()) {}

	void assign(int h, int w) {
		m.assign(h, vector<T>(w));
	}
	void assign(int h, int w, const T init) {
		m.assign(h, vector<T>(w, init));
	}

	inline int size() const {
		return m.size();
	}

	void in() {
		for(vector<T> &v : m)
			for(T &val : v) cin >> val;
	}
	void in(int h, int w) {
		m.resize(h, vector<T>(w));
		in();
	}

	void out() {
		int h = m.size();
		for(vector<T> &v : m) {
			int sz = v.size();
			for(int j = 0; j < sz; j++) {
				cout << v[j] << (j == sz - 1 ? '\n' : ' ');
			}
		}
		cout << flush;
	}

	inline vector<T> &operator[](int idx) {
		assert(0 <= idx && idx < m.size());
		return m[idx];
	}

	bool rangeout(int x, int y) {
		if(x < 0 || y < 0 || x >= size() || y >= m[x].size()) return true;
		return false;
	}
};
#line 2 "structure/2d_array.cpp"

#ifndef call_include
#define call_include
#include <bits/stdc++.h>
using namespace std;
#endif

template<typename T> struct v2d {
private:
	vector<vector<T>> m;

public:
	v2d() {}
	v2d(int h, int w) : m(h, vector<T>(w)) {}
	v2d(int h, int w, const T &init) : m(h, vector<T>(w, init)) {}
	v2d(const initializer_list<initializer_list<T>> m_init) : m(m_init.begin(), m_init.end()) {}

	void assign(int h, int w) {
		m.assign(h, vector<T>(w));
	}
	void assign(int h, int w, const T init) {
		m.assign(h, vector<T>(w, init));
	}

	inline int size() const {
		return m.size();
	}

	void in() {
		for(vector<T> &v : m)
			for(T &val : v) cin >> val;
	}
	void in(int h, int w) {
		m.resize(h, vector<T>(w));
		in();
	}

	void out() {
		int h = m.size();
		for(vector<T> &v : m) {
			int sz = v.size();
			for(int j = 0; j < sz; j++) {
				cout << v[j] << (j == sz - 1 ? '\n' : ' ');
			}
		}
		cout << flush;
	}

	inline vector<T> &operator[](int idx) {
		assert(0 <= idx && idx < m.size());
		return m[idx];
	}

	bool rangeout(int x, int y) {
		if(x < 0 || y < 0 || x >= size() || y >= m[x].size()) return true;
		return false;
	}
};
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