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https://github.com/krahets/hello-algo.git
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@@ -435,11 +435,11 @@ comments: true
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target: Int,
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total: Int,
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choices: IntArray,
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res: MutableList<List<Int>?>
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res: MutableList<MutableList<Int>?>
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) {
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// 子集和等于 target 时,记录解
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if (total == target) {
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res.add(ArrayList(state))
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res.add(state.toMutableList())
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return
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}
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// 遍历所有选择
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@@ -458,10 +458,10 @@ comments: true
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}
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/* 求解子集和 I(包含重复子集) */
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fun subsetSumINaive(nums: IntArray, target: Int): List<List<Int>?> {
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val state: MutableList<Int> = ArrayList() // 状态(子集)
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fun subsetSumINaive(nums: IntArray, target: Int): MutableList<MutableList<Int>?> {
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val state = mutableListOf<Int>() // 状态(子集)
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val total = 0 // 子集和
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val res: MutableList<List<Int>?> = ArrayList() // 结果列表(子集列表)
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val res = mutableListOf<MutableList<Int>?>() // 结果列表(子集列表)
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backtrack(state, target, total, nums, res)
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return res
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}
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@@ -973,11 +973,11 @@ comments: true
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target: Int,
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choices: IntArray,
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start: Int,
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res: MutableList<List<Int>?>
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res: MutableList<MutableList<Int>?>
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) {
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// 子集和等于 target 时,记录解
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if (target == 0) {
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res.add(ArrayList(state))
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res.add(state.toMutableList())
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return
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}
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// 遍历所有选择
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@@ -998,11 +998,11 @@ comments: true
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}
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/* 求解子集和 I */
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fun subsetSumI(nums: IntArray, target: Int): List<List<Int>?> {
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val state: MutableList<Int> = ArrayList() // 状态(子集)
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Arrays.sort(nums) // 对 nums 进行排序
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fun subsetSumI(nums: IntArray, target: Int): MutableList<MutableList<Int>?> {
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val state = mutableListOf<Int>() // 状态(子集)
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nums.sort() // 对 nums 进行排序
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val start = 0 // 遍历起始点
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val res: MutableList<List<Int>?> = ArrayList() // 结果列表(子集列表)
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val res = mutableListOf<MutableList<Int>?>() // 结果列表(子集列表)
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backtrack(state, target, nums, start, res)
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return res
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}
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@@ -1555,11 +1555,11 @@ comments: true
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target: Int,
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choices: IntArray,
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start: Int,
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res: MutableList<List<Int>?>
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res: MutableList<MutableList<Int>?>
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) {
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// 子集和等于 target 时,记录解
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if (target == 0) {
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res.add(ArrayList(state))
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res.add(state.toMutableList())
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return
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}
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// 遍历所有选择
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@@ -1585,11 +1585,11 @@ comments: true
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}
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/* 求解子集和 II */
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fun subsetSumII(nums: IntArray, target: Int): List<List<Int>?> {
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val state: MutableList<Int> = ArrayList() // 状态(子集)
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Arrays.sort(nums) // 对 nums 进行排序
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fun subsetSumII(nums: IntArray, target: Int): MutableList<MutableList<Int>?> {
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val state = mutableListOf<Int>() // 状态(子集)
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nums.sort() // 对 nums 进行排序
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val start = 0 // 遍历起始点
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val res: MutableList<List<Int>?> = ArrayList() // 结果列表(子集列表)
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val res = mutableListOf<MutableList<Int>?>() // 结果列表(子集列表)
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backtrack(state, target, nums, start, res)
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return res
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}
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