How is the traversal sequence of elements in a Map data structure implemented?

In Go, the data structure map does not guarantee a specific order of element traversal. When iterating with a for range loop, the order will be random and may change with each program run.

Example of iterating over map elements:

m := map[string]int{"a": 1, "b": 2, "c": 3}
for key, value := range m {
    fmt.Println(key, value)
}

If a sorted traversal is needed, typically keys are extracted into a slice, sorted, and then iterated over in sorted order:

keys := make([]string, 0, len(m))
for k := range m {
    keys = append(keys, k)
}
sort.Strings(keys)
for _, k := range keys {
    fmt.Println(k, m[k])
}

Thus, the traversal order in a map by default is undefined and random.