Question

我有以下数组：

[["12","21","31","41"],["empty","22","32","42"],["13","23","33","43"]]

在我的正则表达式之后：

picset.replaceAll("\\[\\[\"|\"\\]\\]|", "");

输出：

"12","21","31","41"],["empty","22","32","42"],["13","23","33","43"

如何删除剩余的括号？我还应该注意到，我正在遍历几个不同大小的数组，而不仅仅是这个特定的数组。

Answer 1

如果我采用逻辑你强迫尝试添加另一行代码。

#ifndef GENERATOR_H
#define GENERATOR_H

#include <limits>
#include <chrono>
#include <random>
#include <type_traits>

enum SeedType { USE_CHRONO_CLOCK, USE_RANDOM_DEVICE, USE_SEED_VALUE, USE_SEED_SEQ };

template<class Engine, class Type, template<typename> class Distribution>
class Generator {
public:
    using Clock = std::conditional_t<std::chrono::high_resolution_clock::is_steady,
        std::chrono::high_resolution_clock,
        std::chrono::steady_clock>;

private:
    Engine _engine;
    Distribution<Type> _distribution;
    Type _value;

public:

    template<class... Params>
    explicit Generator( Engine engine, Params... params ) : _engine( engine ) {
        _distribution = Distribution<Type>( params... );
    }

    void seed( SeedType type = USE_RANDOM_DEVICE, std::size_t seedValue = 0, std::initializer_list<std::size_t> list = {} ) {
        switch( type ) {
            case USE_CHRONO_CLOCK:  { _engine.seed( getTimeNow() );  break; }
            case USE_RANDOM_DEVICE: { std::random_device device{};
                                      _engine.seed( device() );      break; }
            case USE_SEED_VALUE:    { _engine.seed( seedValue );     break; }
            case USE_SEED_SEQ:      { std::seed_seq seq( list );
                                      _engine.seed( seq );           break; }
        }
    }

    void generate() {
        _value = _distribution( _engine );
    }

    Type getGeneratedValue() const {
        return _value;
    }

    Distribution<Type> getDistribution() const {
        return _distribution;
    }

    std::size_t getTimeNow() {
        std::size_t now = static_cast<std::size_t>(Clock::now().time_since_epoch().count());
        return now;
    }

};

#endif // !GENERATOR_H

Java - 使用正则表达式从数组中删除所有括号

1 个答案: