Re-namespacing everything and fixing imports to match

algs4/go/algs4-binarysearch/main.go

@@ -0,0 +1,48 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"sort"
+)
+
+import (
+	"github.com/meatballhat/box-o-sand/algs4/go/algs4"
+)
+
+const USAGE string = `Usage: algs4-binarysearch <whitelist-file>
+
+You must also provide input on stdin.`
+
+func main() {
+	if len(os.Args) < 2 {
+		fmt.Println(USAGE)
+		os.Exit(2)
+	}
+
+	whiteListFile, err := os.Open(string(os.Args[1]))
+	if err != nil {
+		fmt.Println("Failed to open whitelist file:", err)
+	}
+
+	whiteList, err := algs4.ReadInts(bufio.NewReader(whiteListFile))
+	if err != nil {
+		fmt.Println("UGH: ", err)
+		os.Exit(1)
+	}
+
+	sort.Ints(whiteList)
+
+	inputs, err := algs4.ReadInts(bufio.NewReader(os.Stdin))
+	if err != nil {
+		fmt.Println("Failed to read inputs:", err)
+		os.Exit(1)
+	}
+
+	for _, key := range inputs {
+		if algs4.BinarySearchRank(key, whiteList) == -1 {
+			fmt.Println(key)
+		}
+	}
+}