英语翻译Let S = s1 s2...s2n be a well-formed string of parentheses.S can be encoded in two different ways:q By an integer sequence P = p1 p2...pn where pi is the number of left parentheses before the ith right parenthesis in S (P-sequence).q By a
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![英语翻译Let S = s1 s2...s2n be a well-formed string of parentheses.S can be encoded in two different ways:q By an integer sequence P = p1 p2...pn where pi is the number of left parentheses before the ith right parenthesis in S (P-sequence).q By a](/uploads/image/z/2963094-6-4.jpg?t=%E8%8B%B1%E8%AF%AD%E7%BF%BB%E8%AF%91Let+S+%3D+s1+s2...s2n+be+a+well-formed+string+of+parentheses.S+can+be+encoded+in+two+different+ways%3Aq+By+an+integer+sequence+P+%3D+p1+p2...pn+where+pi+is+the+number+of+left+parentheses+before+the+ith+right+parenthesis+in+S+%28P-sequence%29.q+By+a)
英语翻译Let S = s1 s2...s2n be a well-formed string of parentheses.S can be encoded in two different ways:q By an integer sequence P = p1 p2...pn where pi is the number of left parentheses before the ith right parenthesis in S (P-sequence).q By a
英语翻译
Let S = s1 s2...s2n be a well-formed string of parentheses.S can be encoded in two different ways:
q By an integer sequence P = p1 p2...pn where pi is the number of left parentheses before the ith right parenthesis in S (P-sequence).
q By an integer sequence W = w1 w2...wn where for each right parenthesis,say a in S,we associate an integer which is the number of right parentheses counting from the matched left parenthesis of a up to a.(W-sequence).
Following is an example of the above encodings:
S (((()()())))
P-sequence 4 5 6666
W-sequence 1 1 1456
请把意思说清楚~
不要谷歌在线翻译的东西~
英语翻译Let S = s1 s2...s2n be a well-formed string of parentheses.S can be encoded in two different ways:q By an integer sequence P = p1 p2...pn where pi is the number of left parentheses before the ith right parenthesis in S (P-sequence).q By a
s是一组括弧.有两种编码方法.
方法一,可获得数列P.其中每个Pi是指在第i个右括弧左边的左括弧数目.(((()比如以上在第一个右括弧左边有4个左括弧.所以P1是4,p2是5...
方法二,可获得数列W.把这堆括弧左右一一对应起来.Wi是第i个右括弧是从和它对应的左括弧开始数起的第一个右括弧.对于第一个右括弧,它对应左括弧就是它左面的第一个.所以从这个左括弧数起,它是第一个右括弧.所以w1是1.而第四个右括弧对应的左括弧是最左面第三个括弧,从这个左括弧数起,它的右括弧是第4个右括弧,所以w4是4.