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LeetCode228.java
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47 lines (43 loc) · 1.18 KB
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import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
/**
* @description:
* @Author: JachinDo
* @Date: 2019/11/21 10:05
*/
public class LeetCode228 {
public List<String> summaryRanges(int[] nums) {
List<String> res = new ArrayList<>();
if (nums.length == 0) {
return res;
}
if (nums.length == 1) {
res.add(String.valueOf(nums[0]));
return res;
}
int start = nums[0];
int end = start;
for (int i = 1; i < nums.length; i++) {
if (nums[i] == end + 1) {
end = nums[i];
if (i == nums.length - 1) {
res.add(start + "->" + end);
}
} else {
if (start == end) {
res.add(String.valueOf(start));
} else {
res.add(start + "->" + end);
}
if (i == nums.length - 1) {
res.add(String.valueOf(nums[i]));
} else {
start = nums[i];
end = nums[i];
}
}
}
return res;
}
}