全文链接：tecdat.cn/?p=29592
Requirement
Tic-tac-toe is a two-player game that children often play to pass the time. The game is usually played using a 3-by-3 game board. Each player chooses a symbol to play with (usually an X or an O) and the goal is to be the first player to place 3 of their symbols in a straight line on the game board (either across a row on the board, down a column or along one of the two main diagonals).
In this Assignment, you are to complete some functions that make up part of a larger program for playing tic-tac-toe. In the program, game boards are not restricted to being 3-by-3, but are instead N-by-N, where N is one of the integers from 1 through 9, inclusive. Our game boards will always be square. When you have completed your functions for this Assignment, you will be able to play games of tic-tac-toe on your computer!
Analysis
Tic-tac-toe又称井字棋，通常是在3x3的棋盘上，双方轮流落子，先将3枚棋子连成一线的一方获胜。本题将游戏进行了拓展，变为NxN的棋盘，加大了难度。我们需要根据提供的框架实现游戏的逻辑部分，尤其是AI部分。 解题的关键需要理解游戏的规则，读懂整个框架，找到切入点，根据给定的测试集不断调试即可。
Tips
从测试集入手
代码语言：javascript复制>>> game_won('XXX-O-O--', 'X')True>>> game_won('XOXOXOOXO', 'X')False
从__main__开始一路调试，到
代码语言：javascript复制def play_tictatoe(): ... hava_a_winner = game_won(game_board, player_symbol)
进入函数后，增加处理逻辑，核心代码如下
代码语言：javascript复制def game_won(game_board, symbol): ... for col in range(1, board_size 1): extract = tictactoe_functions.extract_line(game_board, 'dowm', col) if extract == winning_string: return True for row in range(1, board_size 1): extract = tictactoe_functions.extract_line(game_board, 'across', row) if extract == winning_string: return True ... return False
.markdown-body pre,.markdown-body pre>code.hljs{color:#333;background:#f8f8f8}.hljs-comment,.hljs-quote{color:#998;font-style:italic}.hljs-keyword,.hljs-selector-tag,.hljs-subst{color:#333;font-weight:700}.hljs-literal,.hljs-number,.hljs-tag .hljs-attr,.hljs-template-variable,.hljs-variable{color:teal}.hljs-doctag,.hljs-string{color:#d14}.hljs-section,.hljs-selector-id,.hljs-title{color:#900;font-weight:700}.hljs-subst{font-weight:400}.hljs-class .hljs-title,.hljs-type{color:#458;font-weight:700}.hljs-attribute,.hljs-name,.hljs-tag{color:navy;font-weight:400}.hljs-link,.hljs-regexp{color:#009926}.hljs-bullet,.hljs-symbol{color:#990073}.hljs-built_in,.hljs-builtin-name{color:#0086b3}.hljs-meta{color:#999;font-weight:700}.hljs-deletion{background:#fdd}.hljs-addition{background:#dfd}.hljs-emphasis{font-style:italic}.hljs-strong{font-weight:700}
