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poj3461 Oulipo【KMP】
2022-07-27 13:00:00 【51CTO】
题目链接:
http://poj.org/problem?id=3461
题目大意:
给一个字符串T,表示文章,再给一个字符串W,表示单词。T和W都只包含26个大写英文字母。
现在计算单词W在文章T中出现的次数。W在T中出现的次数必须连续完全匹配,没两次匹配可能
有重叠的部分。
思路:
先求出字符串W的Next[]指针,然后进行匹配,当一次匹配成功后,继续回退到Next[j]向后进行
匹配,直到字符串T的末尾。此时,得到的匹配成功次数为所求,即W在T中出现的次数。
AC代码:
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