Create ContiguousArray.java

Author: Foxeyyy

ContiguousArray.java

@@ -0,0 +1,22 @@
+class Solution {
+    public int findMaxLength(int[] nums) {
+        
+        Map<Integer, Integer> indexes = new HashMap<>();
+        indexes.put(0, -1);
+        
+        int maxlen = 0, count = 0;
+        
+        for (int i = 0; i < nums.length; i++) {
+            
+            count = count + (nums[i] == 1 ? 1 : -1);
+            
+            if (indexes.containsKey(count)) {
+                maxlen = Math.max(maxlen, i - indexes.get(count));
+            } else {
+                indexes.put(count, i);
+            }
+        }
+        
+        return maxlen;
+    }
+}