tableau OA Aloha8

import java.util.*;

public class MyClass {
    public static void main(String args[]) {
      String inputString = "1:4 , 5:10,11:20 ";
      //String inputString = "1:2,5:10";
      String[] inputStringArray = inputString.split("\\s*,\\s*");
      int[][] intervals = new int[inputStringArray.length][2];
     
     for (int i = 0; i < intervals.length; i++) {
         String s = inputStringArray[i];
         intervals[i][0] = Integer.valueOf(s.split(":")[0].trim());
         System.out.println("intervals[i][0] = " + intervals[i][0]);
         intervals[i][1] = Integer.valueOf(s.split(":")[1].trim());
         System.out.println("intervals[i][1] = " + intervals[i][1]);
     }
     
     int[][] res = merge(intervals);
     
     StringBuilder sb = new StringBuilder();
     for (int i=0;i <res.length; i++) {
        sb.append(String.valueOf(res[i][0]));
        sb.append(":");
        sb.append(String.valueOf(res[i][1]));
        sb.append(",");
     }
        
     //最后输出也要是string 
     String str = sb.toString();
     System.out.println(str.substring(0, str.length() - 1));
    }
    
    
    
    public static int[][] merge(int[][] intervals) {
        if (intervals.length <= 1)
            return intervals;

        // Sort by ascending starting point
        Arrays.sort(intervals, (i1, i2) -> Integer.compare(i1[0], i2[0]));

        List<int[]> result = new ArrayList<>();
        int[] newInterval = intervals[0];
        result.add(newInterval);
        //距离是1也要改
        for (int[] interval : intervals) {
            if (interval[0] <= newInterval[1] + 1) // Overlapping intervals, move the end if needed
                newInterval[1] = Math.max(newInterval[1], interval[1]);
            else {                             // Disjoint intervals, add the new interval to the list
                newInterval = interval;
                result.add(newInterval);
            }
        }

        return result.toArray(new int[result.size()][]);
    }
    
    
}

NEXT是一个单词 NEXTLINE是一整行
system.exit(0) 不打印
BigInteger要用compareTo,add(new BigInteger("1"))