摘要：
DFS int cnt[10] = {0,0,3,3,3,3,3,4,3,4}; char map[10][5] = {"","","abc","def","ghi","jkl","mno","pqrs","tuv","wxyz"}; vector letterCombinations(string digits) { // Start typing your C/C++ solution bel 阅读全文
摘要：
Q：八皇后问题。DFS vector > solveNQueens(int n) { // Start typing your C/C++ solution below // DO NOT write int main() function vector > result; if(n positions; Queens(0,n,positions,result); return result; } void Queens(int ... 阅读全文