@@ -43,36 +43,30 @@ void testNegativeNumbers() {
4343 int [] prefixSum = RangeSumQuery .buildPrefixSum (nums );
4444
4545 assertEquals (-2 , RangeSumQuery .sumRange (prefixSum , 0 , 2 )); // -1+2-3
46- assertEquals (3 , RangeSumQuery .sumRange (prefixSum , 1 , 3 )); // 2-3+4
46+ assertEquals (3 , RangeSumQuery .sumRange (prefixSum , 1 , 3 )); // 2-3+4
4747 }
4848
4949 @ Test
5050 void testEmptyArrayThrowsException () {
5151 int [] nums = {};
5252 int [] prefixSum = RangeSumQuery .buildPrefixSum (nums );
5353
54- assertThrows (IllegalArgumentException .class ,
55- () -> RangeSumQuery .sumRange (prefixSum , 0 , 0 ));
54+ assertThrows (IllegalArgumentException .class , () -> RangeSumQuery .sumRange (prefixSum , 0 , 0 ));
5655 }
5756
5857 @ Test
5958 void testNullArrayThrowsException () {
60- assertThrows (IllegalArgumentException .class ,
61- () -> RangeSumQuery .buildPrefixSum (null ));
62- assertThrows (IllegalArgumentException .class ,
63- () -> RangeSumQuery .sumRange (null , 0 , 0 ));
59+ assertThrows (IllegalArgumentException .class , () -> RangeSumQuery .buildPrefixSum (null ));
60+ assertThrows (IllegalArgumentException .class , () -> RangeSumQuery .sumRange (null , 0 , 0 ));
6461 }
6562
6663 @ Test
6764 void testInvalidIndicesThrowsException () {
6865 int [] nums = {1 , 2 , 3 };
6966 int [] prefixSum = RangeSumQuery .buildPrefixSum (nums );
7067
71- assertThrows (IllegalArgumentException .class ,
72- () -> RangeSumQuery .sumRange (prefixSum , -1 , 2 ));
73- assertThrows (IllegalArgumentException .class ,
74- () -> RangeSumQuery .sumRange (prefixSum , 1 , 5 ));
75- assertThrows (IllegalArgumentException .class ,
76- () -> RangeSumQuery .sumRange (prefixSum , 2 , 1 ));
68+ assertThrows (IllegalArgumentException .class , () -> RangeSumQuery .sumRange (prefixSum , -1 , 2 ));
69+ assertThrows (IllegalArgumentException .class , () -> RangeSumQuery .sumRange (prefixSum , 1 , 5 ));
70+ assertThrows (IllegalArgumentException .class , () -> RangeSumQuery .sumRange (prefixSum , 2 , 1 ));
7771 }
7872}
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