我怎样才能让这个循环更短？

Question

我的头不再工作了。我必须完成这个a.s.a.p 我怎样才能使这个循环更短。

目前我有4个不同的循环。我想结合他们，只有一个。

Card[] cards = new Card[4*13]; 

void testCreateCards() { 

    int k = 0; 
    for (int suit = 0; suit <= 3; suit++) {    // for suit 
    for (int value = 1; value <= 13; value++) {    // from Ace to King 
     // build new card 
     cards[k++] = new Card(suit, value); 
    } 
    } 
} 

void testDrawClubs() { 
    int x = 0; 
    int y = 0; 
    for (int i = 0; i <= 12; i++) { 
    cards[i].displayCard(x, y); 
    x +=80; 
    } 
} 

void testDrawDiamonds() { 
    int x = 0; 
    int y = 80; 
    for (int i = 13; i <= 25; i++) { 
    cards[i].displayCard(x, y); 
    x +=80; 
    } 
} 

void testDrawHearts() { 
    int x = 0; 
    int y = 160; 
    for (int i = 26; i <= 38; i++) { 
    cards[i].displayCard(x, y); 
    x +=80; 
    } 
} 
void testDrawSpades() { 
    int x = 0; 
    int y = 240; 
    for (int i = 39; i <= 51; i++) { 
    cards[i].displayCard(x, y); 
    x +=80; 
    } 
} 

Answer 1

可以计算x和y直接使用modular arithmetic因为i % 13给你的x坐标和i/13给你y坐标：

void testDrawCards() { 
    for (int i = 0; i < 52; i++) { 
     int x = i % 13; 
     int y = i/13; 
     cards[i].displayCard(x * 80, y * 80); 
    } 
}