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Thus, at the second row, there are eight white pawns, at the seventh row, there are eight black pawns. At the first row, from left to right, we have a

Often, players play the game with chess clocks. These clocks count the time that each player separately takes for making his own moves. Additional rul

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/判断字符c是否为可打印字符（含空格）。当c为可打印字符（0x20-0x7e）时，返回非零值，否则返回零。 public boolean isPrintableChar(int c) { return (c >= 0) && (c < 127); } public static void main(

简单四则运算，仅仅支持单位的正整数，双栈算法实现。