From d7ed4d9aeb89f83a889fbbda908f9c95a3b821aa Mon Sep 17 00:00:00 2001
From: Matej Focko <me@mfocko.xyz>
Date: Tue, 15 Oct 2024 21:49:19 +0200
Subject: [PATCH] =?UTF-8?q?java:=20add=20=C2=AB2938.=20Separate=20Black=20?=
 =?UTF-8?q?and=20White=20Balls=C2=BB?=
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URL:	https://leetcode.com/problems/separate-black-and-white-balls/
Signed-off-by: Matej Focko <me@mfocko.xyz>
---
 java/separate-black-and-white-balls.java | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 java/separate-black-and-white-balls.java

diff --git a/java/separate-black-and-white-balls.java b/java/separate-black-and-white-balls.java
new file mode 100644
index 0000000..1e2bcbc
--- /dev/null
+++ b/java/separate-black-and-white-balls.java
@@ -0,0 +1,19 @@
+class Solution {
+  public long minimumSteps(String s) {
+    long swaps = 0;
+
+    int blackBalls = 0;
+    for (int i = 0; i < s.length(); ++i) {
+      switch (s.charAt(i)) {
+        case '0':
+          swaps += blackBalls;
+          break;
+        case '1':
+          ++blackBalls;
+          break;
+      }
+    }
+
+    return swaps;
+  }
+}