FilesExpand file tree

master

/

max_subset_sum_no_adjacent.js

Copy path

Blame

More file actions

Blame

More file actions

Latest commit

 

History

History

History

34 lines (32 loc) · 736 Bytes

master

/

max_subset_sum_no_adjacent.js

Copy path

Top

File metadata and controls

• Code
• Blame

34 lines (32 loc) · 736 Bytes

Raw

Copy raw file

Download raw file

Open symbols panel

Edit and raw actions

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

function maxSubsetSumNoAdjacent(array) {

if (!array.length) {

return 0;

}

if (array.length === 1) {

return;

}

let res = array.slice();

res[1] = Math.max(res[0], res[1]);

for (let i = 2; i < array.length; i++) {

res[i] = Math.max(res[i - 1], res[i] + res[i - 2]);

}

return res[res.length - 1];

}

// solution 2

// O(n) time, O(1)space

function maxSubsetSumNoAdjacent(array) {

if (array.length === 0) {

return 0;

}

if (array.length === 1) {

return array[0];

}

let first = array[0];

let second = Math.max(array[0], array[1]);

for (let i = 2; i < array.length; i++) {

let current = Math.max(second, first + array[i]);

first = second;

second = current;

}

return second;

}