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fix several bugs

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krahets
2023-10-17 23:45:31 +08:00
parent 51405c0669
commit 5392afd44b
14 changed files with 15 additions and 15 deletions
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codes/swift/chapter_backtracking/permutations_i.swift
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@ -13,7 +13,7 @@ func backtrack(state: inout [Int], choices: [Int], selected: inout [Bool], res:
}
// 遍历所有选择
for (i, choice) in choices.enumerated() {
// 剪枝：不允许重复选择元素 且 不允许重复选择相等元素
// 剪枝：不允许重复选择元素
if !selected[i] {
// 尝试：做出选择，更新状态
selected[i] = true