Jump Game II
来源:互联网 发布:银龙裁决多少钱淘宝价 编辑:程序博客网 时间:2024/06/07 18:09
Given an array of non-negative integers, you are initially positioned at the first index of the array.
Each element in the array represents your maximum jump length at that position.
Your goal is to reach the last index in the minimum number of jumps.
Example
python
Given array A = [2,3,1,1,4]
The minimum number of jumps to reach the last index is 2
. (Jump 1
step from index 0 to 1, then 3
steps to the last index.)
java不会超时,但是python会超时。by 贪心法不会,所以不写最优解了
java
public class Solution { /* * @param A: A list of integers * @return: An integer */ public int jump(int[] A) { // write your code here if (A == null || A.length == 0) { return 0; } int[] f = new int[A.length]; for (int i = 0; i < A.length; i++) { f[i] = Integer.MAX_VALUE; } f[0] = 0; for (int i = 1; i < A.length; i++) { for (int j = 0; j < i; j++) { if (f[j] != Integer.MAX_VALUE && j + A[j] >= i) { f[i] = Math.min(f[i], 1 + f[j]); } } } return f[A.length - 1]; }}
python
class Solution: """ @param: A: A list of integers @return: An integer """ def jump(self, A): # write your code here if A is None or len(A) == 0: return 0 res = [float('inf')] * len(A) res[0] = 0 for i in range(1, len(A)): for j in range(i): if res[j] != float('inf') and A[j] + j >= i: res[i] = min(res[i], res[j] + 1) return res[-1]
阅读全文
0 0
- Jump Game &Jump Game II
- Jump Game/Jump Game II
- LeetCode: Jump Game II
- LeetCode Jump Game II
- LeetCode: Jump Game II
- [Leetcode] Jump Game II
- [LeetCode] Jump Game II
- [Leetcode] Jump Game ii
- leetcode Jump Game II
- Jump Game II
- Jump Game II
- Jump Game II
- leetcode Jump Game II
- [LeetCode]Jump Game II
- Jump Game II
- Jump Game II
- Jump Game II
- Jump Game II
- TCP/IP
- "在创建窗口句柄之前,不能在控件上调用 Invoke 或 BeginInvoke"
- 剑指offer 链表中倒数第k个节点
- 标准IO
- Greatest Parents Ligh OJ1128
- Jump Game II
- 吴恩达deeplearning.ai课程系列笔记05(下)
- react回调给父组件值.txt
- 【笔记】堆及其实现
- 图像复原与重建(1):图像退化与复原过程模型
- Android设计模式之——责任链模式
- TensorFlow —— expand_dim()函数
- 有限自动机
- python中if语句的运用