public class Solution {
public void merge(int A[], int m, int B[], int n) {
if( m ==0 && n>0) {
for( int i=0;i<n;i++){
A[i] = B[i];
}
}else{
for( int i=0;i<n;i++){ //B
int j = 0;
while( j< m+i && B[i]>A[j]){
j++;
}
for(int k = m+i-1;k>=j; k--){
A[k+1] = A[k];
}
A[j] = B[i];
}
}
}
}