What is Fencepost algorithm? Use it to write a method called countLengths that takes in a String array of 7 elements as parameter& prints the number of characters in each string separated by ",".

Question

Explain "Fencepost algorithm" Use this technique to write a method called countLengths that takes in a String array of 7 elements as parameter& prints the number of

characters in each string separated by ",". For example, if the input to the method is the array 

["The", 'earth", "is", "an'", "inhabited", "endangered", "planet"],

Then it prints the following

3,5,2,2,9,10,6

You do not need to write the entire program, just the method.

Answer 1

How do you know the method works unless you write the main to call it?

class Fencepost

{

public int[] countLengths(String Astrs[])

{

int N = Astrs.length;

String outbuff = " ";

int intArrayReturn[] = new int[N];

//first fencepost

int curLength = intArrayReturn[0] = Astrs[0].length();

outbuff = outbuff + curLength;

for (int iLoop=1; iLoop<N; iLoop++)

{

//link chain

outbuff = outbuff + ",";

//next fencepost

curLength = intArrayReturn[iLoop] = Astrs[iLoop].length();

outbuff = outbuff + curLength;

}

System.out.println(outbuff);

return(intArrayReturn);

}

public void Go()

{

String aStrs[]={"The","quick","brown","fox","jumped","over","the","lazy","dogs"};

int lengths[] = countLengths(aStrs);

for (int iLoop=0; iLoop<lengths.length; iLoop++) { System.out.println(lengths[iLoop]); }

System.out.println("---------------------------------");

String Astrs[] = {"The","earth","is","an","inhabited","endangered","planet"};

lengths= countLengths(Astrs);

for (int iLoop=0; iLoop<lengths.length; iLoop++) { System.out.println(lengths[iLoop]); }

}

public static void main(String args[])

{

Fencepost x = new Fencepost();

x.Go();

}

}