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5 | 5 | // #Big_O_Time_O(n)_Space_O(1) #2024_11_10_Time_0_ms_(100.00%)_Space_44.9_MB_(75.73%)
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6 | 6 |
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7 | 7 | class Solution {
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8 |
| - public int jump(int[] nums) { |
9 |
| - if (nums.length == 1) return 0; |
10 |
| - return minJumps(nums, 0, 0); |
| 8 | + public int jump(int[] nums) { |
| 9 | + if (nums.length == 1) { |
| 10 | + return 0; |
11 | 11 | }
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| 12 | + return minJumps(nums, 0, 0); |
| 13 | + } |
12 | 14 |
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13 |
| - private static int minJumps(int[] nums, int currIndex, int jumpStatus) { |
14 |
| - if (currIndex + nums[currIndex] >= nums.length - 1) return jumpStatus + 1; |
15 |
| - int nextIndex = currIndex + 1; |
16 |
| - int distanceLeft = (nums.length - 1 - (currIndex + 1)) - nums[currIndex + 1]; |
17 |
| - for (int i = currIndex + 2; i <= (currIndex + nums[currIndex]); i++) { |
18 |
| - int tempDistanceLeft = (nums.length - 1 - i) - nums[i]; |
19 |
| - if (distanceLeft > tempDistanceLeft) { |
20 |
| - distanceLeft = tempDistanceLeft; |
21 |
| - nextIndex = i; |
22 |
| - } |
23 |
| - } |
24 |
| - return minJumps(nums, nextIndex, jumpStatus + 1); |
| 15 | + |
| 16 | + private static int minJumps(int[] nums, int currIndex, int jumpStatus) { |
| 17 | + if (currIndex + nums[currIndex] >= nums.length - 1) { |
| 18 | + return jumpStatus + 1; |
| 19 | + } |
| 20 | + int nextIndex = currIndex + 1; |
| 21 | + int distanceLeft = (nums.length - 1 - (currIndex + 1)) - nums[currIndex + 1]; |
| 22 | + for (int i = currIndex + 2; i <= (currIndex + nums[currIndex]); i++) { |
| 23 | + int tempDistanceLeft = (nums.length - 1 - i) - nums[i]; |
| 24 | + if (distanceLeft > tempDistanceLeft) { |
| 25 | + distanceLeft = tempDistanceLeft; |
| 26 | + nextIndex = i; |
| 27 | + } |
25 | 28 | }
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| 29 | + return minJumps(nums, nextIndex, jumpStatus + 1); |
| 30 | + } |
26 | 31 | }
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