I have two arrays:
String[] ArrayA = {"9","1","4","2","3"};
String[] ArrayB = {"9","2","8"};
How do I get a new array like the following
String[] ArrayC = {"9","2","8","A","A"};
The logic is to create a new ArrayC of length equal to ArrayA and backfill the remaining array elements (ArrayA length minus ArrayB length = 2) difference with "A".
Read the javadoc of Arrays.
arrayC = Arrays.copyOf(arrayB, arrayA.length);
Arrays.fill(arrayC, arrayB.length, arrayA.length, "A");
You could just iterate over arrayB and copy it:
String[] arrayA = {"9","1","4","2","3"};
String[] arrayB = {"9","2","8"};
String[] arrayC = new String[arrayA.length];
// copy arrayB:
for (int i = 0; i < arrayB.length; ++i) {
arrayC[i] = arrayB[i];
}
// fill in the remainder:
for (int i = arrayB.length; i < arrayA.length; ++i) {
arrayC[i] = "A";
}
Based on the previous posted code,this is a generic method which satisfy your need, it takes 3 params , two arrays and the word to be used to be used in replacing empty elements
public static String [] fill(String [] arrayA, String[] arrayB ,String word) {
String[] toBeCopied = null ;
int size ;
if( arrayA.length > arrayB.length ) {
size = arrayA.length ;
toBeCopied = arrayB ;
} else {
size = arrayB.length ;
toBeCopied = arrayA ;
}
String[] arrayC = new String[size];
for (int i = 0; i < toBeCopied.length; ++i) {
arrayC[i] = toBeCopied[i];
}
for (int i=toBeCopied.length;i<arrayC.length ;i++ )
arrayC[i] = word;
return arrayC ;
}
