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Commita33b5ff

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committed
add 136 solution
1 parentab3bad6 commita33b5ff

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2 files changed

+91
-8
lines changed

2 files changed

+91
-8
lines changed

‎src/0136.Single-Number/Solution.go

Lines changed: 40 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -1,5 +1,43 @@
11
package Solution
22

3-
funcSolution(xbool)bool {
4-
returnx
3+
funcsingleNumber(nums []int)int {
4+
m:=make(map[int]int,len(nums))
5+
for_,v:=rangenums {
6+
m[v]++
7+
}
8+
forv:=rangem {
9+
ifm[v]==1 {
10+
returnv
11+
}
12+
}
13+
return0
14+
}
15+
16+
//只循环一次
17+
// 2∗(a+b+c)−(a+a+b+b+c) = c
18+
funcsingleNumber2(nums []int)int {
19+
m:=make(map[int]int,len(nums))
20+
sum1,sum2:=0,0
21+
for_,v:=rangenums {
22+
if_,ok:=m[v];!ok {
23+
m[v]++
24+
sum1+=v
25+
}
26+
sum2+=v
27+
}
28+
return2*sum1-sum2
29+
}
30+
31+
//用异或
32+
//　0^0 = 0，
33+
//　1^0 = 1，
34+
//　0^1 = 1，
35+
//　1^1 = 0
36+
37+
funcsingleNumber3(nums []int)int {
38+
ans:=0
39+
for_,v:=rangenums {
40+
ans^=v
41+
}
42+
returnans
543
}

‎src/0136.Single-Number/Solution_test.go

Lines changed: 51 additions & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -10,18 +10,63 @@ func TestSolution(t *testing.T) {
1010
//测试用例
1111
cases:= []struct {
1212
namestring
13-
inputsbool
14-
expectbool
13+
inputs[]int
14+
expectint
1515
}{
16-
{"TestCase",true,true},
17-
{"TestCase",true,true},
18-
{"TestCase",false,false},
16+
{"TestCase", []int{2,2,1},1},
17+
{"TestCase", []int{4,1,2,1,2},4},
1918
}
2019

2120
//开始测试
2221
fori,c:=rangecases {
2322
t.Run(c.name+" "+strconv.Itoa(i),func(t*testing.T) {
24-
got:=Solution(c.inputs)
23+
got:=singleNumber(c.inputs)
24+
if!reflect.DeepEqual(got,c.expect) {
25+
t.Fatalf("expected: %v, but got: %v, with inputs: %v",
26+
c.expect,got,c.inputs)
27+
}
28+
})
29+
}
30+
}
31+
32+
funcTestSolution2(t*testing.T) {
33+
//测试用例
34+
cases:= []struct {
35+
namestring
36+
inputs []int
37+
expectint
38+
}{
39+
{"TestCase", []int{2,2,1},1},
40+
{"TestCase", []int{4,1,2,1,2},4},
41+
}
42+
43+
//开始测试
44+
fori,c:=rangecases {
45+
t.Run(c.name+" "+strconv.Itoa(i),func(t*testing.T) {
46+
got:=singleNumber2(c.inputs)
47+
if!reflect.DeepEqual(got,c.expect) {
48+
t.Fatalf("expected: %v, but got: %v, with inputs: %v",
49+
c.expect,got,c.inputs)
50+
}
51+
})
52+
}
53+
}
54+
55+
funcTestSolution3(t*testing.T) {
56+
//测试用例
57+
cases:= []struct {
58+
namestring
59+
inputs []int
60+
expectint
61+
}{
62+
{"TestCase", []int{2,2,1},1},
63+
{"TestCase", []int{4,1,2,1,2},4},
64+
}
65+
66+
//开始测试
67+
fori,c:=rangecases {
68+
t.Run(c.name+" "+strconv.Itoa(i),func(t*testing.T) {
69+
got:=singleNumber3(c.inputs)
2570
if!reflect.DeepEqual(got,c.expect) {
2671
t.Fatalf("expected: %v, but got: %v, with inputs: %v",
2772
c.expect,got,c.inputs)

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