703. Kth Largest Element in a Stream

class KthLargest {

    private final int[] minArray;
    private int size;
    private final int k;

    public KthLargest(int k, int[] nums) {
        this.k = k;
        this.minArray = new int[k];
        this.size = 0;

        for (int num : nums) {
            add(num);
        }
    }

    public int add(int val) {
        if (size < k) {
            minArray[size++] = val;
            Arrays.sort(minArray, 0, size); 
        } else if (val > minArray[0]) {
            minArray[0] = val;
            Arrays.sort(minArray); 
        }
        return minArray[0];
    }
}

/**
 * Your KthLargest object will be instantiated and called as such:
 * KthLargest obj = new KthLargest(k, nums);
 * int param_1 = obj.add(val);
 */