Initial data commit

Task/Balanced-brackets/Swift/balanced-brackets-1.swift

@@ -0,0 +1,9 @@
+import Foundation
+
+func isBal(str: String) -> Bool {
+
+  var count = 0
+
+  return !str.characters.contains { ($0 == "["  ? ++count : --count) < 0 } && count == 0
+
+}

Task/Balanced-brackets/Swift/balanced-brackets-2.swift

@@ -0,0 +1,3 @@
+isBal("[[[]]]") // true
+
+isBal("[]][[]") // false

Task/Balanced-brackets/Swift/balanced-brackets-3.swift

@@ -0,0 +1,13 @@
+func randBrack(n: Int) -> String {
+
+  var bracks: [Character] = Array(Repeat(count: n, repeatedValue: "["))
+
+  for i in UInt32(n+1)...UInt32(n + n) {
+
+    bracks.insert("]", atIndex: Int(arc4random_uniform(i)))
+
+  }
+
+  return String(bracks)
+
+}

Task/Balanced-brackets/Swift/balanced-brackets-4.swift

@@ -0,0 +1 @@
+randBrack(2) // "]][["

Task/Balanced-brackets/Swift/balanced-brackets-5.swift

@@ -0,0 +1,12 @@
+func randIsBal(n: Int) {
+
+  let (bal, un) = ("", "un")
+
+  for str in (1...n).map(randBrack) {
+
+    print("\(str) is \(isBal(str) ? bal : un)balanced\n")
+
+  }
+}
+
+randIsBal(4)

Task/Balanced-brackets/Swift/balanced-brackets-6.swift

@@ -0,0 +1,7 @@
+//    ][ is unbalanced
+//
+//    ]][[ is unbalanced
+//
+//    []][[] is unbalanced
+//
+//    [][][[]] is balanced