Create 696. Count Binary Substrings

Author: khushi3004

696. Count Binary Substrings

@@ -0,0 +1,19 @@
+class Solution {
+    public int countBinarySubstrings(String s) {
+        int count = 0, i = 1, prev = 0, curr = 1;
+        while(i < s.length()) {
+            //11000110
+            if(s.charAt(i-1) != s.charAt(i)) {
+                count+=Math.min(prev, curr);
+                prev = curr;
+                curr = 1;
+            }
+            else {
+                curr++;
+            }
+            i++;
+        }
+        
+        return count+=Math.min(prev, curr);
+    }
+}