private void setUp(int i, int j) { sign3: for (int h = 0; h < 4; h++) { for (int w = 0; w < 4; w++) { if (w == j && i != 0) { TextView ahead = findViewById(name[i - 1][j]); TextView local = findViewById(name[i][j]); if (!TextUtils.isEmpty(ahead.getText()) && ahead.getText().toString().equals(local.getText().toString())) { SoundPlayUtils.play(1); int num = parse(ahead.getText().toString()); ahead.setText(num + num + ""); local.setText(""); ahead.startAnimation(compot); local.setBackgroundResource(R.drawable.text_bg); isOver[i - 1][j] = true; isOver[i][j] = false; ChangStyle(ahead, local); setScore(ahead); break sign3; } if (TextUtils.isEmpty(ahead.getText())) { isOver[i - 1][j] = true; isOver[i][j] = false; ahead.setText(local.getText().toString() + ""); local.setText(""); local.setBackgroundResource(R.drawable.text_bg); ChangStyle(ahead, local); } i--; } } } }

这是一个 Java 代码段，看起来是在移动一个类似于2048的游戏的方块。其中方法 setUp(i,j) 是用来将 (i,j) 格子上的方块往上移动的。在移动过程中，如果方块上方的格子与其数字相同，就将两个方块合并，同时播放音效，增加分数，并改变视觉效果。如果上方的格子为空，就将本格子的方块移动到那个空格子上，同时改变视觉效果。这段代码通过两个嵌套的 for 循环，遍历整个游戏区域，找到需要移动的方块，并进行相应的操作。

相关问题

修改下列代码错误#include<iostream> #include<vector> namespace my_seq { class Sequence { public: Sequence() { // 将vector初始化为500个0 data = std::vector<int>(500, 0); size = 0; } void set(std::vector<int>& seq) { size = seq.size(); for (int i = 0; i size size; ++i) { data[i] = seq[i]; } } int findSubSeq(std::vector<int>& subSeq) { int subSeqSize = subSeq.size(); for (int i = 0; i <= size - subSeqSize; ++i) { bool found = true; for (int j = 0; j sub subSeqSize; ++j) { if (data[i + j] != subSeq[j]) { found = false; break; } } if (found) { return i + 1; } } return -1; } private: std::vector<int> data; int size; }; } int main() { int m; std::cin >> m; std::vector<int> seq(m); for (int i = 0; i m m; ++i) { std::cin >> seq[i]; } my_seq::Sequence mySeq; mySeq.set(seq); int n; std::cin >> n; std::vector<int> subSeq(n); for (int i = 0; i < n; ++i) { std::cin >> subSeq[i]; } int start = mySeq.findSubSeq(subSeq); if (start == -1) { std::cout << "Subsequence not found" std std::endl; } else { std::cout << "Subsequence found at position " << start std std::endl; } return 0; }

代码中有两个错误：

1.在第28行，代码少了一个分号。

2.在第15行，应该是 i < size，而不是 i size size。

下面是修改后的代码：

#include<iostream> 
#include<vector> 

namespace my_seq {     
    class Sequence {     
    public:         
        Sequence() {             
            // 将vector初始化为500个0             
            data = std::vector<int>(500, 0);             
            size = 0;         
        }         
        void set(std::vector<int>& seq) {             
            size = seq.size();             
            for (int i = 0; i < size; ++i) {                 
                data[i] = seq[i];             
            }         
        }         
        int findSubSeq(std::vector<int>& subSeq) {             
            int subSeqSize = subSeq.size();             
            for (int i = 0; i <= size - subSeqSize; ++i) {                 
                bool found = true;                 
                for (int j = 0; j < subSeqSize; ++j) {                     
                    if (data[i + j] != subSeq[j]) {                         
                        found = false;                         
                        break;                     
                    }                 
                }                 
                if (found) {                                         
                    return i + 1;                 
                }             
            }             
            return -1;         
        }     
    private:         
        std::vector<int> data;         
        int size;     
    }; 
}  

int main() {     
    int m;     
    std::cin >> m;     
    std::vector<int> seq(m);     
    for (int i = 0; i < m; ++i) {         
        std::cin >> seq[i];     
    }     
    my_seq::Sequence mySeq;     
    mySeq.set(seq);     
    int n;     
    std::cin >> n;     
    std::vector<int> subSeq(n);     
    for (int i = 0; i < n; ++i) {         
        std::cin >> subSeq[i];     
    }     
    int start = mySeq.findSubSeq(subSeq);     
    if (start == -1) {         
        std::cout << "Subsequence not found" << std::endl;     
    } else {         
        std::cout << "Subsequence found at position " << start << std::endl;     
    }     
    return 0; 
}

请注意，我只是根据常见错误进行了修改，如果还有其他问题，您需要提供更多信息。

class TicTacToe { private: int qipan[3][3]; TicTacToe *people1; TicTacToe *people2; public: TicTacToe() { *people1 = nullptr; for (int i = 0; i < 3; i++) { for (int j = 0; j < 3; j++) { qipan[i][j] = 0; } } } void print() { for (int i = 0; i < 3; i++) { cout << endl; for (int j = 0; j < 3; j++) { cout << qipan[i][j]; } } } }; int main() { TicTacToe t; t.print(); }这段代码中的指针如何初始化

可以将people1和people2指针初始化为nullptr，表示它们当前不指向任何对象。初始化方式如下：

TicTacToe() {
    people1 = nullptr;
    people2 = nullptr;
    for (int i = 0; i < 3; i++) {
        for (int j = 0; j < 3; j++) {
            qipan[i][j] = 0;
        }
    }
}

注意，指针的初始化不能通过解引用空指针来实现，因为这是未定义行为。应该直接将指针初始化为nullptr，或者指向有效的对象。