57 lines
968 B
Swift
57 lines
968 B
Swift
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let input = [
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43,
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3,
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4,
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10,
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21,
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44,
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4,
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6,
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47,
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41,
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34,
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17,
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17,
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44,
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36,
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31,
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46,
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9,
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27,
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38,
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]
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var minLength = Int.max
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var minCount = 0
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func combinations(input: [Int], goal: Int, match: [Int] = []) -> Int {
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if goal == 0 {
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print("Found", match)
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if match.count < minLength {
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minLength = match.count
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minCount = 1
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} else if match.count == minLength {
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minCount += 1
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}
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return 1
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}
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guard !input.isEmpty else {
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return 0
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}
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var result = 0
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for (index, value) in input.enumerated() {
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if value <= goal {
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var next = Array(input[(index + 1)...])
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result += combinations(input: next, goal: goal - value, match: match + [value])
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}
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}
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return result
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}
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print(combinations(input: input.sorted(by: >), goal: 150))
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print(minCount)
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