FilesExpand file tree

master

/

patching-array.js

Copy path

Blame

More file actions

Blame

More file actions

Latest commit

 

History

History

History

32 lines (28 loc) · 591 Bytes

master

/

patching-array.js

Copy path

Top

File metadata and controls

• Code
• Blame

32 lines (28 loc) · 591 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

// Source : https://leetcode.com/problems/patching-array/

// Author : Han Zichi

// Date : 2016-01-31

/**

* @param {number[]} nums

* @param {number} n

* @return {number}

*/

// 如果没有任何数字，则尽量选取 1, 2, 4, 8, 16

var minPatches = function(nums, n) {

var sum = 0;

var index = 0;

var ans = 0;

while (sum < n) {

if (nums[index] === undefined) {

sum = sum * 2 + 1;

ans++;

} else {

if (sum + 1 < nums[index]) {

ans++;

sum = sum * 2 + 1;

} else {

sum += nums[index++];

}

}

}

return ans;

};