public static void SHIFT_DOWN(int[] Array, int iterator){
        int tmp, j, k=iterator;
        while(j<=k){
            j=k;
            if(((j<<1)<=Array.length) && (Array[j<<1]>Array[k])){
                k=(j<<1);
            }
            if(((j<<1)+1<=Array.length) && (Array[(j<<1)+1]>Array[k]) && (Array[(j<<1)+1]>Array[j<<1])){
                k=(j<<1)+1;
            }
            tmp=Array[j];
            Array[j]=Array[k];
            Array[k]=tmp;
        }
    }