@@ -35,40 +35,45 @@ int[] Retrieve(String start, String end, String granularity):
3535 */
3636public class _635 {
3737
38- /**credit: https://discuss.leetcode.com/topic/94449/concise-java-solution*/
39- public static class LogSystem {
38+ public static class Solution1 {
39+ /**
40+ * credit: https://discuss.leetcode.com/topic/94449/concise-java-solution
41+ */
42+ public static class LogSystem {
4043
41- /**These indices denote and string endings of timestamps of different granularity, i.e.
42- * timestamp[1] in timestamps: "2017:01:01:22:59:59"
43- * -> 2017: 4, 01: 7, 01: 10, 22: 13, 59: 16, 59: 19*/
44+ /**
45+ * These indices denote and string endings of timestamps of different granularity, i.e.
46+ * timestamp[1] in timestamps: "2017:01:01:22:59:59"
47+ * -> 2017: 4, 01: 7, 01: 10, 22: 13, 59: 16, 59: 19
48+ */
4449
45- List <String []>timestamps ;
46- List <String >units ;
47- int []indices ;
50+ List <String []>timestamps ;
51+ List <String >units ;
52+ int []indices ;
4853
49- public LogSystem () {
50- timestamps =new LinkedList <>();
51- units =Arrays .asList ("Year" ,"Month" ,"Day" ,"Hour" ,"Minute" ,"Second" );
52- indices =new int []{4 ,7 ,10 ,13 ,16 ,19 };
53- }
54+ public LogSystem () {
55+ timestamps =new LinkedList <>();
56+ units =Arrays .asList ("Year" ,"Month" ,"Day" ,"Hour" ,"Minute" ,"Second" );
57+ indices =new int []{4 ,7 ,10 ,13 ,16 ,19 };
58+
5459
55- public void put (int id ,String timestamp ) {
56- timestamps .add (new String []{Integer .toString (id ),timestamp });
57- }
60+ public void put (int id ,String timestamp ) {
61+ timestamps .add (new String []{Integer .toString (id ),timestamp });
62+
5863
59- public List <Integer >retrieve (String s ,String e ,String gra ) {
60- List <Integer >res =new LinkedList <>();
61- int index =units .indexOf (gra );
62- int stringEnd =indices [index ];
63- for (String []timestamp :timestamps ) {
64- if (timestamp [1 ].substring (0 ,stringEnd ).compareTo (s .substring (0 ,stringEnd )) >=0
65- &×tamp [1 ].substring (0 ,stringEnd ).compareTo (e .substring (0 ,stringEnd )) <=0 ) {
66- res .add (Integer .parseInt (timestamp [0 ]));
64+ public List <Integer >retrieve (String s ,String e ,String gra ) {
65+ List <Integer >res =new LinkedList <>();
66+ int index =units .indexOf (gra );
67+ int stringEnd =indices [index ];
68+ for (String []timestamp :timestamps ) {
69+ if (timestamp [1 ].substring (0 ,stringEnd ).compareTo (s .substring (0 ,stringEnd )) >=0
70+ &×tamp [1 ].substring (0 ,stringEnd ).compareTo (e .substring (0 ,stringEnd )) <=0 ) {
71+ res .add (Integer .parseInt (timestamp [0 ]));
72+ }
6773 }
74+ return res ;
6875 }
69- return res ;
7076 }
7177 }
7278
73-
7479}