How to sort golang Maps by value and key
This article shows how to sort golang map with the key and value
A map is an unordered list of key value pairs. Each key in a map is associated with a value. The value can be removed, modified or retrieved using its key.
In Go a map type is expressed as map[keyType]valueType
The Golang make function can be used to create maps as i
Population: = make(map[string]int) //Key type is a string while the value type is int
To add values to the population map
population:= make(map[string]int)
population[“brazil”] = 620
population[“france”] = 300
Alternately you can use the literal type
population:= map[string]int{
“brazil” :620
“france” :300
}
Let explore a larger map as in
Sorting Maps by Key
To sort my key is relatively easy, create a collection of keys and sort using the golang sort package.
Sorting Maps by value
Sorting by value is a little more complicated. The best approach is to create a struct of key and value properties.
The created struct should implement the golang sort interface making it each to sort
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