chapter1

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   /** Program 1.3 Finding the First Negative Integer in an Integer Array */

   | import java.applet.Applet;
    | import java.io.*;
    |
    | public class ProgramFormatExample extends Applet {
5 |
    |    public final static int ARRAY_SIZE = 100;
    |
    |
    |    int find(int[ ] A) {            // find operates on integer arrays, A
10 |
    |      int j;                 // j is an index variable used in the search
    |
    |      for ( j = 0; j < ARRAY_SIZE; j++ ) {      // search upward starting
    |                                                         // at position 0
15 |              if (A[j] < 0) {                      // if A[j] is negative
    |                      return j;       // return its index j as the result
    |              }
    |      }
    |
20 |      return -1;          // return -1 if no negative integers were found
    |    }
    |
    |    public void init( ) {
    |
25 |       int[] A = new int[ARRAY_SIZE]; // declare A to be an integer array
    |       int i;        // let i be an index variable used for intialization
    |
    |    // initialize array A to squares of integers. then make A[17] negative.
    |       for (i = 0; i < ARRAY_SIZE; i++) A[i] = i*i;
30 |       A[17] = -A[17];
    |
    |    // print test results
    |       System.out.println("First neg. integer in A is at index = " + find(A));
    |    }
35 |
    | }

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