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Commitca5b470

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add a solution for 2080
1 parent223ea6e commitca5b470

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2 files changed

+60
-15
lines changed

2 files changed

+60
-15
lines changed

‎src/main/java/com/fishercoder/solutions/_2080.java

Lines changed: 27 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -35,4 +35,31 @@ public int query(int left, int right, int value) {
3535
}
3636
}
3737
}
38+
39+
publicstaticclassSolution2 {
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publicstaticclassRangeFreqQuery {
41+
Map<Integer,TreeMap<Integer,Integer>>map;
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43+
publicRangeFreqQuery(int[]arr) {
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map =newHashMap<>();
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for (inti =0;i <arr.length;i++) {
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map.putIfAbsent(arr[i],newTreeMap<>());
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map.get(arr[i]).put(i,map.get(arr[i]).size());
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}
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}
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51+
publicintquery(intleft,intright,intvalue) {
52+
if (!map.containsKey(value)) {
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return0;
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}
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TreeMap<Integer,Integer>indexMap =map.get(value);
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Integerstart =indexMap.ceilingKey(left);
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Integerend =indexMap.floorKey(right);
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if (start ==null ||end ==null) {
59+
return0;
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}
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returnindexMap.get(end) -indexMap.get(start) +1;
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}
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}
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}
3865
}

‎src/test/java/com/fishercoder/_2080Test.java

Lines changed: 33 additions & 15 deletions
Original file line numberDiff line numberDiff line change
@@ -6,32 +6,50 @@
66
importstaticorg.junit.Assert.assertEquals;
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88
publicclass_2080Test {
9-
privatestatic_2080.Solution1.RangeFreqQueryrangeFreqQuery;
9+
privatestatic_2080.Solution1.RangeFreqQueryrangeFreqQuery1;
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privatestatic_2080.Solution2.RangeFreqQueryrangeFreqQuery2;
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1112
@Test
1213
publicvoidtest1() {
13-
rangeFreqQuery =new_2080.Solution1.RangeFreqQuery(newint[]{12,33,4,56,22,2,34,33,22,12,34,56});
14-
assertEquals(1,rangeFreqQuery.query(1,2,4));
15-
assertEquals(2,rangeFreqQuery.query(0,11,33));
14+
rangeFreqQuery1 =new_2080.Solution1.RangeFreqQuery(newint[]{12,33,4,56,22,2,34,33,22,12,34,56});
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assertEquals(1,rangeFreqQuery1.query(1,2,4));
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assertEquals(2,rangeFreqQuery1.query(0,11,33));
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18+
rangeFreqQuery2 =new_2080.Solution2.RangeFreqQuery(newint[]{12,33,4,56,22,2,34,33,22,12,34,56});
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assertEquals(1,rangeFreqQuery2.query(1,2,4));
20+
assertEquals(2,rangeFreqQuery2.query(0,11,33));
1621
}
1722

1823
@Test
1924
publicvoidtest2() {
20-
rangeFreqQuery =new_2080.Solution1.RangeFreqQuery(newint[]{1,1,1,2,2});
21-
assertEquals(0,rangeFreqQuery.query(0,1,2));
22-
assertEquals(3,rangeFreqQuery.query(0,2,1));
23-
assertEquals(1,rangeFreqQuery.query(3,3,2));
24-
assertEquals(1,rangeFreqQuery.query(2,2,1));
25+
rangeFreqQuery1 =new_2080.Solution1.RangeFreqQuery(newint[]{1,1,1,2,2});
26+
assertEquals(0,rangeFreqQuery1.query(0,1,2));
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assertEquals(3,rangeFreqQuery1.query(0,2,1));
28+
assertEquals(1,rangeFreqQuery1.query(3,3,2));
29+
assertEquals(1,rangeFreqQuery1.query(2,2,1));
30+
31+
rangeFreqQuery2 =new_2080.Solution2.RangeFreqQuery(newint[]{1,1,1,2,2});
32+
assertEquals(0,rangeFreqQuery2.query(0,1,2));
33+
assertEquals(3,rangeFreqQuery2.query(0,2,1));
34+
assertEquals(1,rangeFreqQuery2.query(3,3,2));
35+
assertEquals(1,rangeFreqQuery2.query(2,2,1));
2536
}
2637

2738
@Test
2839
publicvoidtest3() {
29-
rangeFreqQuery =new_2080.Solution1.RangeFreqQuery(newint[]{3,4,5,3,3,2,2,2,5,4});
30-
// assertEquals(2, rangeFreqQuery.query(2, 6, 3));
31-
// assertEquals(0, rangeFreqQuery.query(5, 6, 5));
32-
// assertEquals(2, rangeFreqQuery.query(1, 6, 2));
33-
assertEquals(1,rangeFreqQuery.query(0,2,3));
34-
assertEquals(0,rangeFreqQuery.query(5,6,4));
40+
rangeFreqQuery1 =new_2080.Solution1.RangeFreqQuery(newint[]{3,4,5,3,3,2,2,2,5,4});
41+
assertEquals(2,rangeFreqQuery1.query(2,6,3));
42+
assertEquals(0,rangeFreqQuery1.query(5,6,5));
43+
assertEquals(2,rangeFreqQuery1.query(1,6,2));
44+
assertEquals(1,rangeFreqQuery1.query(0,2,3));
45+
assertEquals(0,rangeFreqQuery1.query(5,6,4));
46+
47+
rangeFreqQuery2 =new_2080.Solution2.RangeFreqQuery(newint[]{3,4,5,3,3,2,2,2,5,4});
48+
assertEquals(2,rangeFreqQuery2.query(2,6,3));
49+
assertEquals(0,rangeFreqQuery2.query(5,6,5));
50+
assertEquals(2,rangeFreqQuery2.query(1,6,2));
51+
assertEquals(1,rangeFreqQuery2.query(0,2,3));
52+
assertEquals(0,rangeFreqQuery2.query(5,6,4));
3553
}
3654

3755
}

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