17. Letter Combinations of a Phone Number
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vector<string> letterCombinations(string digits) { int n = digits.size(); if (n == 0) return vector<string>(); vector<vector<string>> res(n); vector<vector<string>> temp = { {" "}, { "#" }, { "a","b","c" }, { "d","e","f" }, { "g","h","i" }, { "j","k","l" }, { "m","n","o" }, { "p","q","r","s" }, { "t","u","v" }, { "w","x","y","z" } }; for (int i = 0; i < n; i++) { for (auto letter : temp[digits[i] - '0']) { if (i == 0) { res[i].push_back(letter); continue; } for (auto anwser : res[i-1]) { res[i].push_back(anwser + letter); } } } return res[n - 1];} 0 0
- 17.Letter Combinations of a Phone Number
- 17. Letter Combinations of a Phone Number
- 17. Letter Combinations of a Phone Number
- 17. Letter Combinations of a Phone Number
- 17. Letter Combinations of a Phone Number
- 17. Letter Combinations of a Phone Number
- 17. Letter Combinations of a Phone Number
- 17. Letter Combinations of a Phone Number
- 17. Letter Combinations of a Phone Number
- 17. Letter Combinations of a Phone Number
- 17. Letter Combinations of a Phone Number
- 17. Letter Combinations of a Phone Number
- 17. Letter Combinations of a Phone Number
- 17. Letter Combinations of a Phone Number
- 17. Letter Combinations of a Phone Number
- 17. Letter Combinations of a Phone Number
- 17. Letter Combinations of a Phone Number
- 17. Letter Combinations of a Phone Number
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- 17. Letter Combinations of a Phone Number
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