Summary Ranges

Total Accepted: 511

Total Submissions: 2271

Given a sorted integer array without duplicates, return the summary of its ranges.

For example, given [0,1,2,4,5,7], return ["0->2","4->5","7"].

[思路]

两个指针 start, end.  假设nums[end+1] = nums[end]+1, 就移动end指针, 否则, 插入字符串nums[start]->nums[end].

[CODE]

public class Solution {    // [0,1,2,4,5,7], return ["0->2","4->5","7"].     public List
     
       summaryRanges(int[] nums) {        List
      
        res = new ArrayList<>();        if(nums==null || nums.length<1) return  res;                int s=0, e=0;        while(e
       
        " + nums[e];                    res.add(str);                }                ++e;                s = e;            }        }        return res;    }}