tasks a-s

Task/Remove-duplicate-elements/Go/remove-duplicate-elements-1.go

@@ -0,0 +1,20 @@
+package main
+import "fmt"
+
+func uniq(list []int) []int {
+  unique_set := make(map[int] bool, len(list))
+  for _, x := range list {
+    unique_set[x] = true
+  }
+  result := make([]int, len(unique_set))
+  i := 0
+  for x := range unique_set {
+    result[i] = x
+    i++
+  }
+  return result
+}
+
+func main() {
+  fmt.Println(uniq([]int {1,2,3,2,3,4})) // prints: [3 1 4 2]
+}

Task/Remove-duplicate-elements/Go/remove-duplicate-elements-2.go

@@ -0,0 +1,23 @@
+package main
+
+import "fmt"
+
+func uniq(list []int) []int {
+    unique_set := make(map[int]int, len(list))
+    i := 0
+    for _, x := range list {
+        if _, there := unique_set[x]; !there {
+            unique_set[x] = i
+            i++
+        }
+    }
+    result := make([]int, len(unique_set))
+    for x, i := range unique_set {
+        result[i] = x
+    }
+    return result
+}
+
+func main() {
+    fmt.Println(uniq([]int{1, 2, 3, 2, 3, 4})) // prints: [1 2 3 4]
+}

Task/Remove-duplicate-elements/Go/remove-duplicate-elements-3.go

@@ -0,0 +1,35 @@
+package main
+
+import (
+    "fmt"
+    "math"
+)
+
+func uniq(list []float64) []float64 {
+    unique_set := map[float64]int{}
+    i := 0
+    nan := false
+    for _, x := range list {
+        if _, exists := unique_set[x]; exists {
+            continue
+        }
+        if math.IsNaN(x) {
+            if nan {
+                continue
+            } else {
+                nan = true
+            }
+        }
+        unique_set[x] = i
+        i++
+    }
+    result := make([]float64, len(unique_set))
+    for x, i := range unique_set {
+        result[i] = x
+    }
+    return result
+}
+
+func main() {
+    fmt.Println(uniq([]float64{1, 2, math.NaN(), 2, math.NaN(), 4}))
+}