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A Tour of Go Exercises
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| package main | |
| import ( | |
| "golang.org/x/tour/wc" | |
| "strings" | |
| ) | |
| func WordCount(s string) map[string]int { | |
| wordsMap := make(map[string]int) | |
| words := strings.Fields(s) | |
| for _, v := range words { | |
| wordsMap[v] ++ | |
| } | |
| return wordsMap | |
| } | |
| func main() { | |
| wc.Test(WordCount)package main | |
| import ( | |
| "golang.org/x/tour/wc" | |
| "strings" | |
| ) | |
| func WordCount(s string) map[string]int { | |
| wordsMap := make(map[string]int) | |
| words := strings.Fields(s) | |
| for _, v := range words { | |
| wordsMap[v]++ | |
| } | |
| return wordsMap | |
| } | |
| func main() { | |
| wc.Test(WordCount) | |
| } | |
| } |
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| package main | |
| import ( | |
| "fmt" | |
| "math" | |
| ) | |
| func Sqrt(x float64) (z float64) { | |
| const DELTA = 4e-16 | |
| const INITIAL_Z = 1.0 | |
| z = INITIAL_Z | |
| step := func() float64 { | |
| return z - (z*z-x)/(2*z) | |
| } | |
| for zz := step(); math.Abs(zz-z) > DELTA; { | |
| z = zz | |
| zz = step() | |
| } | |
| return | |
| } | |
| func main() { | |
| fmt.Println(Sqrt(100)) | |
| fmt.Println(math.Sqrt(100)) | |
| fmt.Println(DELTA) | |
| } |
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| package main | |
| import "golang.org/x/tour/pic" | |
| func Pic(dx, dy int) [][]uint8 { | |
| table := make([][]uint8, dy) | |
| for y := 0; y < dy; y++ { | |
| row := make([]uint8, dx) | |
| for x := 0; x < dx; x++ { | |
| row[x] = uint8(x^y) | |
| } | |
| table[y] = row | |
| } | |
| return table | |
| } | |
| func main() { | |
| pic.Show(Pic) | |
| } |
// Just for comparison - fibonacci in javascript
fib = function(numMax){
for(var fibArray = [0,1], k=0; k<numMax; k++ ){
x=fibArray[k] + fibArray[k+1]
fibArray.push(x);
}
console.log(fibArray);
}
fib(10)
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newt_sqrt from https://gist.github.com/abesto/3476594