<b>·ûºÅ»¯ÎÄ×Ö.</b> (Ãû³Æ: <span class="tt">symtext</span>)
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ÏÔÈ»±¾Ñ¡Ïî²»ÄÜÓÃÓÚÖÐÎÄ.
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±¾ÀàÐÍ¿ÉÔÚÀàÐͶ¨Òå»òÔÚÆäËü»Ø´ðÀàÐÍÖÐÉùÃ÷Ñ¡Ïî <span class="tt">symtext</span> ¶ø±»¼¤»î.
ÔÚµÚÒ»ÖÖÇéÐÎ, »Ø´ðÀ¸ÊÇÒ»¸ö <span class="tt">textarea</span>, ÔÊÐíÊäÈ뼸ÐÐÎÄ×Ö.
ÔÚµÚ¶þÖÖÇéÐÎ, »Ø´ðÀ¸±£³ÖÔʼÀàÐÍ.
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ÕýÈ·´ð°¸ÊÇÂú×ãsymtext¾ä·¨
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µÄÒ»¸ö¾ä×Ó (Ö»ÒªÖªµÀ generic
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¸ñʽ¾Í¹»ÁË). ÀýÈç (<span class="tt">generic</span> ¸ñʽ):
<ul><li>
<span class="tt">a _or b</span> ¿ÉÒÔÀí½âΪ "a or b", "b or a", "either a
or b", "either b or a".
</li><li>
<span class="tt">Bill _and [my friend]</span> ¿ÉÒÔÀí½âΪ "Bill and my friend",
"my friend and Bill", "Bill as well as my friend", "my friend as well as
Bill".
</li><li>
<span class="tt">x _equals y</span> ¿ÉÒÔÀí½âΪ "x equals y", "y is equal to x",
"x and y are equal", µÈ.
</ul> <p>
½¨ÒéÓô¿ÎÄ×ÖµÄÐÎʽ¸ø³öÊ×Ñ¡µÄ»Ø´ð. ÀýÈçÈôÕýÈ·´ð°¸ÊÇ "A and B" ÇÒÁ½Õß²»·ÖÏȺó,
ÄÇô±ê×¼´ð°¸×îºÃ²ÉÓà <span class="tt">A and B|A _and B</span> ¶ø²»ÊÇ <span class="tt">A _and B</span>.
ÕâÑùÔÚÏòѧÉúÏÔʾÕýÈ·´ð°¸Ê±, ²»»á³öÏÖÈÃѧÉúÃþ²»µ½Í·Ä﵀ "A _and B".
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Èç¹ûÔÚÕýÈ·´ð°¸ÖÐÖ»ÓÐÒ»ÐÐ, ÄÇô²»Óë´ËÐÐÆ¥ÅäµÄ»Ø´ð¶¼ÊÇ´íµÄ.
·´Ö®, Èç¹ûÕýÈ·´ð°¸°üº¬¼¸ÐÐ (Ó÷ֺŠ'<b><span class="tt">;</span></b>' ·Ö¸ô),
ÄÇôÓë²¹³äÐÐÆ¥ÅäµÄ»Ø´ð¶¼ÊÇ´íµÄ, ¶øµ±»Ø´ðÖгöÏÖÕýÈ·´ð°¸ÖÐÕÒ²»µ½µÄ´Êʱ,
¶¼±»ÈÏΪÊDz»ÍêÕûµÄ, ÇÒ±»ÍË»ØÖØÐÂÊäÈë.
´ËÍ⾡¹ÜËùÓеĴʶ¼°üº¬ÔÚÕýÈ·´ð°¸ÖÐ, µ«²»ÓëÈκÎÒ»ÐÐÆ¥ÅäµÄ»Ø´ð¶¼ÅÐΪ´íÎó.
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ͨ³£¿É°ÑҪʶ±ðµÄ´Ê·ÅÔÚµÚ 2 ÐÐ, ¼ÓÉÏÀàÐÍ <span class="tt">case</span>, <span class="tt">nocase</span> »ò
<span class="tt">atext</span>.
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Ò²¿ÉÒÔ¸ø³ö²¿·ÖÕýÈ·µÄ´ð°¸, Ö»ÐèÔÚÑ¡ÏîÖÐÉùÃ÷ <span class="tt">goodlim=n</span>, ÆäÖÐ <span class="tt">n</span>
ÊÇÒ»¸ö´óÓÚ 1 µÄÕûÊý, ÕâÑù·²ÊÇÓëµÚ 2 ÖÁ <span class="tt">n</span> ÐÐÆ¥ÅäµÄ»Ø´ð¶¼ÈÏΪÊDz¿·ÖÕýÈ·µÄ,
ÆäµÃ·Ö°´ÐеÄÏȺó´ÎÐòµÝ¼õ.
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Ñ¡ÏîÓòÖгöÏÖµÄ symtext µÄÑ¡Ïî¶¼Äܱ»Ê¶±ð.
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symtext µÄÊä³ö¿É´Ó±äÁ¿ <tt>\result<i>n</i></tt> µÃµ½,
ÆäÖÐ <i>n</i> ÊǻشðÀ¸µÄÐòºÅ.
Õâ¿É±»ÓÃÓÚ <span class="tt">\feedback</span>.
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!!.