本文共 1899 字,大约阅读时间需要 6 分钟。
Description
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 6666W-sequence 1 1 1456
Write a program to convert P-sequence of a well-formed string to the W-sequence of the same string.
InputThe first line of the input contains a single integer t (1 <= t <= 10), the number of test cases, followed by the input data for each test case. The first line of each test case is an integer n (1 <= n <= 20), and the second line is the P-sequence of a well-formed string. It contains n positive integers, separated with blanks, representing the P-sequence.
OutputThe output file consists of exactly t lines corresponding to test cases. For each test case, the output line should contain n integers describing the W-sequence of the string corresponding to its given P-sequence.
Sample Input2
6 4 5 6 6 6 6 9 4 6 6 6 6 8 9 9 9 Sample Output1 1 1 4 5 6
1 1 2 4 5 1 1 3 9题意很难理解,看了半天才懂。
p序列是指:对于第i个右括号,p[i]就是这个右括号左边的左括号数量。 w序列是指:对于第i个右括号,w[i]指向左经过多少个已匹配的左括号,找到一个未匹配的左括号 然后模拟就行了#include#include #include #include #include //#include #include #include #include #include
转载地址:http://zicvb.baihongyu.com/