java - 如何仅使用数组和循环(没有其他方法)来删除 null？

Question

我这里有这段代码，输出带有null。我怎样才能删除它？

输入是:

hello hello i i am norman

      for (int i=0; i<words.length; i++){
        boolean isUnique = true;
        int freq = 0;
        for (int j=0; j<words.length; j++){
            if (i==j){
                freq++;
                 continue;
            }
            if (words[j].equals(words[i])){
                 isUnique = false;
                freq++;
            }
        }

        if (isUnique){

            uniquewords[i] = words[i];}

        frequency[i] = freq;

       }

    }

输出:

null null null null am norman

Answer 1

if (uniquewords[i] != null){
   System.out.println(uniquewords[i]);
}

打印时添加此检查