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第51题.N皇后 修改Java代码
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@ -332,7 +332,7 @@ class Solution {
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public boolean isValid(int row, int col, int n, char[][] chessboard) {
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public boolean isValid(int row, int col, int n, char[][] chessboard) {
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// 检查列
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// 检查列
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for (int i=0; i<n; ++i) {
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for (int i=0; i<row; ++i) { // 相当于剪枝
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if (chessboard[i][col] == 'Q') {
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if (chessboard[i][col] == 'Q') {
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return false;
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return false;
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}
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}
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