我个人喜欢级联三元运算符:

int result = condition1
    ? result1
    : condition2
    ? result2
    : condition3
    ? result3
    : resultElse;

但在你的情况下，你可以使用:

final int[] result = new int[/*16*/] {
    0, 0, 1, 2,
    0, 0, 2, 1,
    2, 1, 3, 3,
    1, 2, 3, 3
};

public int fightMath(int one, int two) {
    return result[one*4 + two];
}

或者，你可以注意到比特的模式:

one   two   result

section 1: higher bits are equals =>
both result bits are equals to that higher bits

00    00    00
00    01    00
01    00    00
01    01    00
10    10    11
10    11    11
11    10    11
11    11    11

section 2: higher bits are different =>
lower result bit is inverse of lower bit of 'two'
higher result bit is lower bit of 'two'

00    10    01
00    11    10
01    10    10
01    11    01
10    00    10
10    01    01
11    00    01
11    01    10

所以你可以使用魔法:

int fightMath(int one, int two) {
    int b1 = one & 2, b2 = two & 2;
    if (b1 == b2)
        return b1 | (b1 >> 1);

    b1 = two & 1;

    return (b1 << 1) | (~b1);
}

除了JAB之外，我不喜欢任何提出的解决方案。其他方法都不容易阅读代码和理解正在计算的内容。

以下是我如何编写这段代码——我只会c#，不懂Java，但你可以想象:

const bool t = true;
const bool f = false;
static readonly bool[,] attackResult = {
    { f, f, t, f }, 
    { f, f, f, t },
    { f, t, t, t },
    { t, f, t, t }
};
[Flags] enum HitResult 
{ 
    Neither = 0,
    PlayerOne = 1,
    PlayerTwo = 2,
    Both = PlayerOne | PlayerTwo
}
static HitResult ResolveAttack(int one, int two)
{
    return 
        (attackResult[one, two] ? HitResult.PlayerOne : HitResult.Neither) | 
        (attackResult[two, one] ? HitResult.PlayerTwo : HitResult.Neither);
}    

现在，这里计算的内容更加清楚了:这强调了我们正在计算谁受到了什么攻击，并返回两个结果。

然而，这可能会更好;布尔数组有点不透明。我喜欢表格查找方法，但我更倾向于以一种能够明确游戏语义的方式来编写它。也就是说，与其“攻击为零，防御为一，结果是没有命中”，不如找到一种方法，让代码更清楚地暗示“低踢攻击和低阻挡防御，结果是没有命中”。让代码反映游戏的业务逻辑。

相反，你可以这样做

   public int fightMath(int one, int two) {
    return Calculate(one,two)

    }


    private int Calculate(int one,int two){

    if (one==0){
        if(two==0){
     //return value}
    }else if (one==1){
   // return value as per condtiion
    }

    }

为什么不使用数组呢?

我将从头说起。我看到了一个模式，值从0到3，你想捕捉所有可能的值。这是你的桌子:

0 & 0 = 0
0 & 1 = 0
0 & 2 = 1
0 & 3 = 2
1 & 0 = 0
1 & 1 = 0
1 & 2 = 2
1 & 3 = 1
2 & 0 = 2
2 & 1 = 1
2 & 2 = 3
2 & 3 = 3
3 & 0 = 2
3 & 1 = 1
3 & 2 = 3
3 & 3 = 3

当我们查看相同的二进制表时，我们看到以下结果:

00 & 00 = 00
00 & 01 = 00
00 & 10 = 01
00 & 11 = 10
01 & 00 = 00
01 & 01 = 00
01 & 10 = 10
01 & 11 = 01
10 & 00 = 10
10 & 01 = 01
10 & 10 = 11
10 & 11 = 11
11 & 00 = 10
11 & 01 = 01
11 & 10 = 11
11 & 11 = 11

现在你可能已经看到了一些模式，但当我把值1和2结合起来时，我看到你使用了所有的值0000,0001,0010，.....1110和1111。现在让我们把值1和值2组合成一个4位整数。

0000 = 00
0001 = 00
0010 = 01
0011 = 10
0100 = 00
0101 = 00
0110 = 10
0111 = 01
1000 = 10
1001 = 01
1010 = 11
1011 = 11
1100 = 10
1101 = 01
1110 = 11
1111 = 11

当我们把它转换回十进制值时，我们看到一个非常可能的值数组，其中1和2的组合可以用作索引:

0 = 0
1 = 0
2 = 1
3 = 2
4 = 0
5 = 0
6 = 2
7 = 1
8 = 2
9 = 1
10 = 3
11 = 3
12 = 2
13 = 1
14 = 3
15 = 3

数组是{0,0,1,2,0,0,2,1,2,1,2,1,3,3,2,1,3,3,1,3,3}，其中它的索引是1和2的组合。

我不是Java程序员，但你可以去掉所有的if语句，把它写下来，就像这样:

int[] myIntArray = {0, 0, 1, 2, 0, 0, 2, 1, 2, 1, 3, 3, 2, 1, 3, 3};
result = myIntArray[one * 4 + two]; 

我不知道移位2是否比乘法快。但这值得一试。

使用常量或枚举使代码更具可读性 尝试将代码拆分为更多的函数 试着利用问题的对称性

这里是一个建议，但在这里使用int型仍然有点难看:

static final int BLOCK_HIGH = 0;
static final int BLOCK_LOW = 1;
static final int ATTACK_HIGH = 2;
static final int ATTACK_LOW = 3;

public static int fightMath(int one, int two) {
    boolean player1Wins = handleAttack(one, two);
    boolean player2Wins = handleAttack(two, one);
    return encodeResult(player1Wins, player2Wins); 
}



private static boolean handleAttack(int one, int two) {
     return one == ATTACK_HIGH && two != BLOCK_HIGH
        || one == ATTACK_LOW && two != BLOCK_LOW
        || one == BLOCK_HIGH && two == ATTACK_HIGH
        || one == BLOCK_LOW && two == ATTACK_LOW;

}

private static int encodeResult(boolean player1Wins, boolean player2Wins) {
    return (player1Wins ? 1 : 0) + (player2Wins ? 2 : 0);
}

使用结构化类型作为输入和输出会更好。输入实际上有两个字段:位置和类型(阻挡或攻击)。输出也有两个字段:player1Wins和player2Wins。将其编码为单个整数会使代码更难阅读。

class PlayerMove {
    PlayerMovePosition pos;
    PlayerMoveType type;
}

enum PlayerMovePosition {
    HIGH,LOW
}

enum PlayerMoveType {
    BLOCK,ATTACK
}

class AttackResult {
    boolean player1Wins;
    boolean player2Wins;

    public AttackResult(boolean player1Wins, boolean player2Wins) {
        this.player1Wins = player1Wins;
        this.player2Wins = player2Wins;
    }
}

AttackResult fightMath(PlayerMove a, PlayerMove b) {
    return new AttackResult(isWinningMove(a, b), isWinningMove(b, a));
}

boolean isWinningMove(PlayerMove a, PlayerMove b) {
    return a.type == PlayerMoveType.ATTACK && !successfulBlock(b, a)
            || successfulBlock(a, b);
}

boolean successfulBlock(PlayerMove a, PlayerMove b) {
    return a.type == PlayerMoveType.BLOCK 
            && b.type == PlayerMoveType.ATTACK 
            && a.pos == b.pos;
}

不幸的是，Java并不擅长表达这类数据类型。

这使用了一点bitmagic(你已经通过在一个整数中保存两个比特信息(low/high & attack/block)来做到这一点):

我没有运行，只是在这里输入，请仔细检查。这个想法肯定有效。 编辑:现在对每个输入进行测试，工作正常。

public int fightMath(int one, int two) {
    if(one<2 && two<2){ //both players blocking
        return 0; // nobody hits
    }else if(one>1 && two>1){ //both players attacking
        return 3; // both hit
    }else{ // some of them attack, other one blocks
        int different_height = (one ^ two) & 1; // is 0 if they are both going for the same height - i.e. blocker wins, and 1 if height is different, thus attacker wins
        int attacker = one>1?1:0; // is 1 if one is the attacker, two is the blocker, and 0 if one is the blocker, two is the attacker
        return (attacker ^ different_height) + 1;
    }
}

或者我应该建议把这两个信息分离成单独的变量? 主要基于上面这样的位操作的代码通常很难维护。