CS_learn/hello-algo
1
0
Fork 0
mirror of https://github.com/krahets/hello-algo.git synced 2026-04-24 02:21:30 +08:00
Code Issues Packages Projects Releases Wiki Activity

Update n_queens code.

Browse Source
This commit is contained in:
krahets
2023-06-21 02:56:28 +08:00
parent ba1e5c1d7d
commit 9fc1a0b2b3
8 changed files with 16 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
codes/go/chapter_backtracking/n_queens.go
View File

@@ -21,8 +21,8 @@ func backtrack(row, n int, state *[][]string, res *[][][]string, cols, diags1, d
// 计算该格子对应的主对角线和副对角线
diag1 := row - col + n - 1
diag2 := row + col
// 剪枝：不允许该格子所在 (列 或 主对角线 或 副对角线) 包含皇后
if !((*cols)[col] || (*diags1)[diag1] || (*diags2)[diag2]) {
// 剪枝：不允许该格子所在列、主对角线、副对角线存在皇后
if !(*cols)[col] && !(*diags1)[diag1] && !(*diags2)[diag2] {
// 尝试：将皇后放置在该格子
(*state)[row][col] = "Q"
(*cols)[col], (*diags1)[diag1], (*diags2)[diag2] = true, true, true