let string = "点击注册按钮,即表示您已同意隐私条款和服务协议" let ranStr = "同意" let attrstring:NSMutableAttributedString = NSMutableAttributedString(string:string) let str = NSString(string: string) let theRange = str.range(of: ranStr) attrstring.addAttribut
Given a string s and a string t, check if s is subsequence of t. You may assume that there is only lower case English letters in both s and t. t is potentially a very long (length ~= 500,000) string, and s is a short string (<=100). A subsequence of
Given an undirected graph, return true if and only if it is bipartite. Recall that a graph is bipartite if we can split it's set of nodes into two independent subsets A and B such that every edge in the graph has one node in A and another node in B.
