mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-11-27 20:59:42 +08:00
40 lines
854 B
Go
40 lines
854 B
Go
package storage
|
|
|
|
import "testing"
|
|
|
|
func TestBinarySearch(t *testing.T) {
|
|
var testInput []int
|
|
testInput = []int{-1, 0, 3, 5, 9, 12}
|
|
|
|
if 3 != binarySearchForLargerThanTarget(testInput, 4) {
|
|
t.Errorf("failed to find target %d", 4)
|
|
}
|
|
if 3 != binarySearchForLargerThanTarget(testInput, 3) {
|
|
t.Errorf("failed to find target %d", 3)
|
|
}
|
|
if 6 != binarySearchForLargerThanTarget(testInput, 12) {
|
|
t.Errorf("failed to find target %d", 12)
|
|
}
|
|
if 1 != binarySearchForLargerThanTarget(testInput, -1) {
|
|
t.Errorf("failed to find target %d", -1)
|
|
}
|
|
if 0 != binarySearchForLargerThanTarget(testInput, -2) {
|
|
t.Errorf("failed to find target %d", -2)
|
|
}
|
|
|
|
}
|
|
|
|
func binarySearchForLargerThanTarget(nums []int, target int) int {
|
|
l := 0
|
|
h := len(nums)
|
|
for l < h {
|
|
m := (l + h) / 2
|
|
if nums[m] <= target {
|
|
l = m + 1
|
|
} else {
|
|
h = m
|
|
}
|
|
}
|
|
return l
|
|
}
|