Data commit

Task/Balanced-brackets/Nim/balanced-brackets.nim

@@ -0,0 +1,24 @@
+from random import random, randomize, shuffle
+from strutils import repeat
+
+randomize()
+
+proc gen(n: int): string =
+  result = "[]".repeat(n)
+  shuffle(result)
+
+proc balanced(txt: string): bool =
+  var b = 0
+  for c in txt:
+    case c
+    of '[':
+      inc(b)
+    of ']':
+      dec(b)
+      if b < 0: return false
+    else: discard
+  b == 0
+
+for n in 0..9:
+  let s = gen(n)
+  echo "'", s, "' is ", (if balanced(s): "balanced" else: "not balanced")