Test015_A.java

public class Test015_A{
    
    public void pack(byte[] s, int[] d){
	for(int i = 0; i < d.length; i++){
	    int ptr = i << 2;
	    d[i] = 0;
	    d[i] += (s[ptr + 0] << 24);
	    d[i] += (s[ptr + 1] << 16);
	    d[i] += (s[ptr + 2] <<  8);
	    d[i] += (s[ptr + 3] <<  0);
	}
    }

    public void pack4(byte[] s, int[] d, int i){
	int ptr = i << 2;
	d[i] = 0;
	d[i] += (s[ptr + 0] << 24);
	d[i] += (s[ptr + 1] << 16);
	d[i] += (s[ptr + 2] <<  8);
	d[i] += (s[ptr + 3] <<  0);
    }

}