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class Solution {
    public int maxBalancedSubarray(int[] nums) {
        int xor[]=new int[nums.length], ps[]=new int[nums.length];
        HashMap<String,Integer> map=new HashMap<>();
        map.put("0#0",-1);
        int sum=0, cnt=0, mlen=0;
        for(int i=0;i<nums.length;i++){
            sum^=nums[i];
            xor[i]=sum;
            if(nums[i]%2==0){
                cnt+=1;
            }else{
                cnt-=1;
            }
            int bit=0;
            String k=cnt+"#"+sum;
            if(map.containsKey(k)){
                int j=map.get(k);
                mlen=Math.max(mlen,i-j);
            }else{
                map.put(k,i);
            }
            ps[i]=cnt;
        }
        return mlen;
    }
}

Main.java:4: error: cannot find symbol
        HashMap<String,Integer> map=new HashMap<>();
        ^
  symbol:   class HashMap
  location: class Solution
Main.java:4: error: cannot find symbol
        HashMap<String,Integer> map=new HashMap<>();
                                        ^
  symbol:   class HashMap
  location: class Solution
2 errors

Standard output is empty