17. Letter Combinations of a Phone Number
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class Solution { public List<String> letterCombinations(String digits) { LinkedList<String> ans = new LinkedList<String>(); String[] mapping = new String[] {"0", "1", "abc", "def", "ghi", "jkl", "mno", "pqrs", "tuv", "wxyz"}; if (digits.contains("1")||digits.contains("0")||"".equals(digits))return ans; ans.add(""); for(int i =0; i<digits.length();i++){ int x = Character.getNumericValue(digits.charAt(i)); while(ans.peek().length()==i){ String t = ans.remove(); for(char s : mapping[x].toCharArray()) ans.add(t+s); } } return ans; }}阅读全文
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- 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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