Create Binary Watch.java

varunu28 · web-flow · commit a0f7fcda4654 · 2021-10-16T07:55:01.000-05:00
diff --git a/Easy/Binary Watch.java b/Easy/Binary Watch.java
@@ -0,0 +1,13 @@
+class Solution {
+  public List<String> readBinaryWatch(int turnedOn) {
+    return IntStream.range(0, 12)
+        .boxed()
+        .flatMap(
+            h -> IntStream.range(0, 60)
+                .boxed()
+                .filter(s -> Integer.bitCount(h) + Integer.bitCount(s) == turnedOn)
+                .map(m -> String.format("%d:%02d", h, m))
+        )
+        .collect(Collectors.toList());
+  }
+}
