num/count.go at master · quant1x/num · 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
package num

import (
	"gitee.com/quant1x/num/x64"
)

// Count 统计
func Count[T Number | ~bool](x []T) int {
	switch vs := any(x).(type) {
	case []bool:
		return x64.Count(vs)
	case []int8:
		return __count_go(vs)
	case []uint8:
		return __count_go(vs)
	case []int16:
		return __count_go(vs)
	case []uint16:
		return __count_go(vs)
	case []int32:
		return __count_go(vs)
	case []uint32:
		return __count_go(vs)
	case []int64:
		return __count_go(vs)
	case []uint64:
		return __count_go(vs)
	case []int:
		return __count_go(vs)
	case []uint:
		return __count_go(vs)
	case []uintptr:
		return __count_go(vs)
	case []float32:
		return __count_go(vs)
	case []float64:
		return __count_go(vs)
	}
	return 0
}

func __count_go[T Number](x []T) int {
	cnt := 0
	for i := 0; i < len(x); i++ {
		if x[i] != 0 {
			cnt += 1
		}
	}
	return cnt
}