leetcode - Word Break
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Given a string s and a dictionary of words dict, determine if s can be segmented into a space-separated sequence of one or more dictionary words.
For example, given
s = "leetcode",
dict = ["leet", "code"].
Return true because "leetcode" can be segmented as "leet code".
class Solution {public: bool wordBreak(std::string s, std::unordered_set<std::string> &dict) { int n = (int)s.size();std::vector<int> dp(n+1,0);dp[0] = 1;for(int i = 1; i <= n; i++){if(dp[i-1]){int index = i - 1;for(int j = index; j < n; j++){std::string str = s.substr(index,j-index+1);if(dict.count(str) > 0)dp[j+1] = true;}}}return dp[n]; }}; 0 0
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