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Jump Game

时间:2014-10-21 12:19:47      阅读:198      评论:0      收藏:0      [点我收藏+]

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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.

Determine if you are able to reach the last index.

For example:
A = [2,3,1,1,4], return true.

A = [3,2,1,0,4], return false.

答案

public class Solution {
    public boolean canJump(int[] A) {
        if(A==null||A.length<=1)
        {
            return true;
        }
        Queue<Integer> queue=new LinkedList<Integer>();
        for(int index=0;index<A.length-1;index++)
        {
            if(A[index]<=0)
            {
                queue.add(index);
            }
        }
        
        for(int index=0;queue.size()>0&&index<queue.peek();)
        {
            if(A[index]+index>queue.peek())
            {
                queue.remove();
            }
            else
            {
                index++;
            }
        }
        return queue.size()==0;
    }
}


Array Greedy

Jump Game

标签:style   blog   color   io   os   ar   java   for   sp   

原文地址:http://blog.csdn.net/jiewuyou/article/details/40342231

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