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標(biāo)題:
Project Euler - 018
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作者:
dorodaloo
時間:
2017-03-28 21:44
標(biāo)題:
Project Euler - 018
本帖最后由 dorodaloo 于 2017-03-28 21:46 編輯
從下面的三角形的頂端開始,向下面一行的相鄰數(shù)字移動,從頂端到底端的最大總和為23.
3
7
4
2
4
6
8 5
9
3
也就是 3 + 7 + 4 + 9 = 23.
找出從以下三角形的頂端走到底端的最大總和:
75
95 64
17 47 82
18 35 87 10
20 04 82 47 65
19 01 23 75 03 34
88 02 77 73 07 63 67
99 65 04 28 06 16 70 92
41 41 26 56 83 40 80 70 33
41 48 72 33 47 32 37 16 94 29
53 71 44 65 25 43 91 52 97 51 14
70 11 33 28 77 73 17 78 39 68 17 57
91 71 52 38 17 14 91 43 58 50 27 29 48
63 66 04 68 89 53 67 30 73 16 69 87 40 31
04 62 98 27 23 09 70 98 73 93 38 53 60 04 23
作者:
dorodaloo
時間:
2017-03-31 09:19
大家?guī)兔聪?br />
作者:
dorodaloo
時間:
2017-04-03 14:13
package main
func main() {
a := [][]int{ {3}, { 7, 4 }, { 2, 4, 6 }, { 8, 5, 9, 3 } }
b := [][]int{
{75},
{ 95, 64 },
{ 17, 47, 82 },
{ 18, 35, 87, 10 },
{ 20, 4, 82, 47, 65 },
{ 19, 1, 23, 75, 3, 34 },
{ 88, 2, 77, 73, 7, 63, 67 },
{ 99, 65, 4, 28, 6, 16, 70, 92 },
{ 41, 41, 26, 56, 83, 40, 80, 70, 33 },
{ 41, 48, 72, 33, 47, 32, 37, 16, 94, 29 },
{ 53, 71, 44, 65, 25, 43, 91, 52, 97, 51, 14 },
{ 70, 11, 33, 28, 77, 73, 17, 78, 39, 68, 17, 57 },
{ 91, 71, 52, 38, 17, 14, 91, 43, 58, 50, 27, 29, 48 },
{ 63, 66, 4, 68, 89, 53, 67, 30, 73, 16, 69, 87, 40, 31 },
{ 4, 62, 98, 27, 23, 9, 70, 98, 73, 93, 38, 53, 60, 4, 23 } }
p018(a) // 23
p018(b) // 1074
}
func p018(A [][]int) {
max := make([]int, len(A[len(A)-1]))
copy(max, A[len(A)-1])
for i := len(A) - 2; i >= 0; i-- {
for j := 0; j < len(A[i]); j++ {
add := max[j]
if add < max[j+1] { add = max[j+1] }
max[j] = A[i][j] + add
}
}
println(max[0])
}
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