message: Update contiguous-array.cpp
diff: @@ -6,13 +6,13 @@ public:
  int findMaxLength(vector<int>& nums) {
  int result = 0, count = 0;
  unordered_map<int, int> lookup;
  - lookup[0] = 0;
  + lookup[0] = -1;
  for (int i = 0; i < nums.size(); ++i) {
  count += nums[i] == 1 ? 1 : -1;
  if (lookup.count(count)) {
  - result = max(result, i + 1 - lookup[count]);
  + result = max(result, i - lookup[count]);
  } else {
  - lookup[count] = i + 1;
  + lookup[count] = i;
  }
  }
  return result;
  