leetcode 392 Is Subsequence C++
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这道题没什么说的,双指针即可。
有一点需要注意的是,size()方法挺耗时间的,我直接用打败14%,只用一次打败91%
bool isSubsequence(string s, string t) { int sSize = s.size(); int tSize = t.size(); if (!sSize) return true; int indexS = 1; int indexT = 1; while(indexS <= sSize && indexT <= tSize) { if (s[indexS] == t[indexT]) { indexS++; } indexT++; } if (indexS == sSize + 1) return true; return false; }
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