Create: 1189-maximum-number-of-balloons.cs

Author: alexprudhomme

Diff for: csharp/1189-maximum-number-of-balloons.cs

@@ -0,0 +1,19 @@
+public class Solution {
+    public int MaxNumberOfBalloons(string text) {
+        var charCounts = text.GroupBy(c => c)
+                        .ToDictionary(g => g.Key, g => g.Count());
+        var balloonCounts = "balloon".GroupBy(c => c)
+                        .ToDictionary(g => g.Key, g => g.Count());
+        
+        int result = text.Length;
+        foreach (var balloonCount in balloonCounts) {
+            if (charCounts.ContainsKey(balloonCount.Key)) {
+                result = Math.Min(result, charCounts[balloonCount.Key] / balloonCount.Value);
+            } else {
+                result = 0;
+                break;
+            }
+        }
+        return result;
+    }
+}