Question

我正在尝试为连接4编写程序，这是检查获胜者的功能。当我运行该函数时，我收到错误消息：list index超出范围。我该如何解决？

def winner(board):
    # Check rows for winner
    for c in range(NUM_ROWS): #number of rows
        for r in range(NUM_COLS-3): #number of columns filled to win
            if (board[r][c] == board[r][c + 1] == board[r][c + 2] == board[r][c + 3]) and (board[r][c] != " "):
                return true

    # Check columns for winner
    for c in range(NUM_COLS): #number of rows
        for r in range(NUM_ROWS-3): #number of columns filled to win 
            if (board[r][c] == board[r + 1][c] == board[r + 2][c] ==board[r + 3][c]) and (board[r][c] != " "):
                return true

    # Check diagonal (top-left to bottom-right) for winner
    for c in range(NUM_COLS-3): #number of columns in a winning diagonal 
        for r in range(NUM_ROWS): #number of rows in a winning diagonal
            if (board[r][c] == board[r + 1][c + 1] == board[r + 2][c + 2] == board[r + 3][c + 3]) and (board[r][c] != " "):
                return true


    # Check diagonal (bottom-left to top-right) for winner
    for r in range(NUMC_COLS-3): #columns to make a diagonal
        for c in range(NUM_ROWS-3): #rows to make a diagonal
            if (board[r][c] == board[r - 1][c + 1] == board[r - 2][c + 2] == board[r - 3][c + 3]) and (board[r][c] != " "):
                return true

    # No winner: return the empty string
    return False

Answer 1

您的行和列循环交换：

for c in range(NUM_ROWS): #number of rows
    for r in range(NUM_COLS-3): #number of columns filled to win
        if (board[r][c] == board[r][c + 1] == board[r][c + 2] == board[r][c + 3]) and (board[r][c] != " "):

请注意，c（列）的范围超过NUM_ROWS，r（行）的范围超过{{1 }}

您在最后一个嵌套循环中再次执行此操作：

NUM_COLS

但你也拼错了for r in range(NUMC_COLS-3): #columns to make a diagonal for c in range(NUM_ROWS-3): #rows to make a diagonal if (board[r][c] == board[r - 1][c + 1] == board[r - 2][c + 2] == board[r - 3][c + 3]) and (board[r][c] != " "):所以你的程序从来没有这么远。

在第3个区块中，您还将超出NUMC_COLS值的范围：

当您到达# Check diagonal (top-left to bottom-right) for winner for c in range(NUM_COLS-3): #number of columns in a winning diagonal for r in range(NUM_ROWS): #number of rows in a winning diagonal if (board[r][c] == board[r + 1][c + 1] == board[r + 2][c + 2] == board[r + 3][c + 3]) and (board[r][c] != " "): return true循环的最后一次迭代时，r + 1会引发IndexError，因为您没有将该循环限制为for r in range(NUM_ROWS)。

Answer 2

你需要解决这个问题:(看看你如何说r + 3 ......你可以说，对于NUM_ROWS + 3）

for c in range(NUM_COLS-3): #number of columns in a winning diagonal 
    for r in range(NUM_ROWS): #number of rows in a winning diagonal
        if (board[r][c] == board[r + 1][c + 1] == board[r + 2][c + 2] == board[r + 3][c + 3]) and (board[r][c] != " "):
            return true

列表索引超出范围

2 个答案: