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median.go
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median.go
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/*
*
* Copyright 2021 The Vitess Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* /
*/
package math
import "sort"
// MedianInt computes the median of the given int array.
func MedianInt(values []int) float64 {
if len(values) == 0 {
return 0
}
sort.Ints(values)
middle := len(values) / 2
if len(values)%2 == 1 {
return float64(values[middle])
}
return float64(values[middle-1] + values[middle]) / 2
}
// MedianFloat computes the median of the given float64 array.
func MedianFloat(values []float64) float64 {
if len(values) == 0 {
return 0
}
sort.Float64s(values)
middle := len(values) / 2
if len(values)%2 == 1 {
return values[middle]
}
return (values[middle-1] + values[middle]) / 2
}