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python/go/swift vs
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package main | |
import "fmt" | |
var sum = 0 | |
func main() { | |
for e := 0; e < 30; e++ { | |
sum = 0 | |
var x[]int | |
for i := 0; i < 1000000; i++ { | |
x = append(x, i) | |
} | |
var y[]int | |
for i := 0; i < 1000000-1; i++ { | |
y = append(y, x[i] + x[i+1]) | |
} | |
for i := 0; i < 1000000; i+=100 { | |
sum += y[i] | |
} | |
} | |
fmt.Println(sum) | |
} |
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#!/usr/bin python | |
sum = 0 | |
for e in xrange(30): | |
sum = 0 | |
x = [] | |
for i in xrange(1000000): | |
x.append(i) | |
y = [] | |
for i in xrange(1000000 - 1): | |
y.append(x[i] + x[i+1]) | |
i = 0 | |
for i in xrange(0, 1000000, 100): | |
sum += y[i] | |
print sum |
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#!/usr/bin/xcrun swift | |
var sum = 0 | |
for e in 0..<30 { | |
sum = 0 | |
var x: Array<Int> = [] | |
for (var i=0; i<1000_000; i++) { | |
x.append(i) | |
} | |
var y: Array<Int> = [] | |
for (var i=0; i<1000_000-1; i++) { | |
y.append(x[i] + x[i+1]) | |
} | |
for (var i=0; i<1000_000; i+=100){ | |
sum += y[i] | |
} | |
} | |
print(sum) |
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➜ 63c1c4743b11126b848c22b208767254 git:(master) time go run test_go.go
9999010000
go run test_go.go 0.88s user 0.09s system 91% cpu 1.068 total
➜ 63c1c4743b11126b848c22b208767254 git:(master) time ./test_swift.swift
9999010000
./test_swift.swift 1.85s user 0.59s system 97% cpu 2.508 total
➜ 63c1c4743b11126b848c22b208767254 git:(master) time python test_python.py
9999010000
python test_python.py 11.73s user 0.64s system 92% cpu 13.312 total