algorithm/algorithms/src/array/BinarySearchTest.java at master · guokaide/algorithm · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
packagearray;

importorg.junit.Assert;
importorg.junit.Test;

publicclassBinarySearchTest {

// 测试示例（完备）
@Test
publicvoidtestBinarySearch() {
intnotFound = -1;
inttarget = 6;

// 测试数组为null
int[] arr = null;
Assert.assertEquals(notFound, BinarySearch.binarySearch(arr, target));

// 测试数组为空
int[] arr1 = newint[0];
Assert.assertEquals(notFound, BinarySearch.binarySearch(arr1, target));

// 功能测试
int[] arr2 = newint[] {3,4,5,6,8,9,12,20,25};

// 功能测试：not Found
inttarget1 = 30;
Assert.assertEquals(notFound, BinarySearch.binarySearch(arr2, target1));

// 功能测试：Found
inttarget2 = 5;
intexpected = 2;
Assert.assertEquals(expected, BinarySearch.binarySearch(arr2, target2));
 }

@Test
publicvoidtestBinarySearchRecur() {
intnotFound = -1;
inttarget = 6;

// 测试数组为null
int[] arr = null;
Assert.assertEquals(notFound, BinarySearch.binarySearchRecur(arr, target));

// 测试数组为空
int[] arr1 = newint[0];
Assert.assertEquals(notFound, BinarySearch.binarySearchRecur(arr1, target));

// 功能测试
int[] arr2 = newint[] {3,4,5,6,8,9,12,20,25};

// 功能测试：not Found
inttarget1 = 30;
Assert.assertEquals(notFound, BinarySearch.binarySearchRecur(arr2, target1));

// 功能测试：Found
inttarget2 = 5;
intexpected = 2;
Assert.assertEquals(expected, BinarySearch.binarySearchRecur(arr2, target2));
 }

// 以下只进行功能测试
@Test
publicvoidtestBsFirst() {
int[] arr = newint[] {3,4,5,5,5,6,8,9,12,20,25};
inttarget = 5;
intexpected = 2;

Assert.assertEquals(expected, BinarySearch.bsFirst(arr, target));

inttarget1 = 6;
intexpected1 = 5;
Assert.assertEquals(expected1, BinarySearch.bsFirst(arr, target1));

inttarget2 = 30;
intexpected2 = -1;
Assert.assertEquals(expected2, BinarySearch.bsFirst(arr, target2));
 }

@Test
publicvoidtestBsLast() {
int[] arr = newint[] {3,4,5,5,5,6,8,9,12,20,25};
inttarget = 5;
intexpected = 4;

Assert.assertEquals(expected, BinarySearch.bsLast(arr, target));

inttarget1 = 6;
intexpected1 = 5;
Assert.assertEquals(expected1, BinarySearch.bsLast(arr, target1));

inttarget2 = 30;
intexpected2 = -1;
Assert.assertEquals(expected2, BinarySearch.bsLast(arr, target2));
 }

@Test
publicvoidtestBsFirstGE() {
int[] arr = newint[] {3,4,5,5,5,6,8,9,12,20,25};
inttarget = 5;
intexpected = 2;

Assert.assertEquals(expected, BinarySearch.bsFistGE(arr, target));

inttarget1 = 7;
intexpected1 = 6;
Assert.assertEquals(expected1, BinarySearch.bsFistGE(arr, target1));

inttarget2 = 30;
intexpected2 = -1;
Assert.assertEquals(expected2, BinarySearch.bsFistGE(arr, target2));
 }

@Test
publicvoidtestBsLastLE() {
int[] arr = newint[] {3,4,5,5,5,6,8,9,12,20,25};
inttarget = 5;
intexpected = 4;

Assert.assertEquals(expected, BinarySearch.bsLastLE(arr, target));

inttarget1 = 7;
intexpected1 = 5;
Assert.assertEquals(expected1, BinarySearch.bsLastLE(arr, target1));

inttarget2 = -2;
intexpected2 = -1;
Assert.assertEquals(expected2, BinarySearch.bsLastLE(arr, target2));
 }
}