Brother Lian Blockchain training share go language simple sort

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The go language is optimized for programming multi-processor system applications, with go-compiled programs that are comparable to C or C + + code, and are more secure and support parallel processes.

Write code to find the need to sort Map[int64]int64, Golang in the sort package to solve the problem, the following is from the Internet to find 2 examples, Memo.

Example one:

Package Main

Import (

"FMT"

"Sort"

)

Func Main ()

M: = map[string]string{"B": "All", "Z": "123123", "X": "SDF", "a": "12"}

mk: = make ([]string, Len (m))

I: = 0

For k, _: = Range m {

Mk[i] = k

i++

}

Sort. Sortstrings (MK)

Fmt. Println (MK)

}

Example two:

A data structure to hold a key/value pair.

Type Pair struct {

Key string

Value int

}

A Slice of Pairs that implements sort. Interface to sort by Value.

Type Pairlist []pair

Func (P pairlist) Swap (i, J int) {P[i], p[j] = P[j], P[i]}

Func (P pairlist) len () int {return Len (p)}

Func (P pairlist) Less (i, J int) bool {return p[i]. Value < P[j]. Value}

A function to turn a maps into a pairlist, then sort and return it.

Func Sortmapbyvalue (M map[string]int) pairlist {

P: = Make (Pairlist, Len (m))

I: = 0

For k, V: = range m {

P[i] = pair{k, v}

}

Sort. Sort (P)

Return P

}