鏁版嵁緇撴瀯絎竴绔犲～絀洪鍙婂弬鑰冪瓟妗圼2]_璺ㄨ€冪綉

1錛庡湪涓嬮潰鐨勭▼搴忔涓紝瀵癸綐鐨勮祴鍊艱鍙ョ殑棰戝害涓?/span>______錛堣〃紺轟負n鐨勫嚱鏁幫級銆傘€?a target="_blank">鍖椾含宸ヤ笟澶у 1999 涓€銆?/span>6錛?/span>2鍒嗭級銆?/span>

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銆€銆€聽聽聽 FOR i:錛濓紤 TO n DO

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銆€銆€聽聽聽 FOR j:錛濓紤 TO i DO

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銆€銆€聽聽聽 FOR k:錛?/span>1 TO j DO

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銆€銆€聽聽聽 锝?/span>:錛濓綐錛?/span>delta;

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銆€銆€銆愬弬鑰冪瓟妗堛€?/span>1+錛?/span>1+2++錛?/span>1+2+3錛?/span>+鈥?/span>+錛?/span>1+2+鈥?/span>+n錛?/span>=n(n+1)(n+2)/6 O(n3)

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銆€銆€2錛庡凡鐭ュ涓嬬▼搴忔

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銆€銆€聽聽聽 FOR i:= n DOWNTO 1 DO {璇彞1}

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銆€聽聽聽 銆€BEGIN

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銆€聽聽聽 銆€x:=x+1錛?/span> {璇彞2}

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銆€聽聽聽 銆€FOR j:=n DOWNTO i DO {璇彞3}

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銆€聽聽聽 銆€y:=y+1; {璇彞4}

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銆€聽聽聽 銆€END錛?/span>

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銆€銆€璇彞1鎵ц鐨勯搴︿負 錛?/span>1錛?/span> 錛涜鍙?/span>2鎵ц鐨勯搴︿負 錛?/span>2錛?/span> 錛涜鍙?/span>3鎵ц鐨勯搴︿負 錛?/span>3錛?/span> 錛涜鍙?/span>4鎵ц鐨勯搴︿負 錛?/span>4錛?/span> 銆傘€愬寳鏂逛氦閫氬ぇ瀛?/span> 1999 浜屻€?/span>4錛?/span>5鍒嗭級銆?/span>

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銆€銆€銆愬弬鑰冪瓟妗堛€戯紙1錛?/span>n+1 錛?/span>2錛?/span>n 錛?/span>3錛?/span>n(n+3)/2 錛?/span>4錛?/span>n(n+1)/2