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19. What values are stored in the array referred to by the variable x after the following code executes? boolean[] x = (true, false, false, false); for (int i = 1; i < x.length; i++) { x[i] = ! (x[i - 1] || x[i]);

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20 Nov 2018
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16. The following method takes two integer arrays and a target integer as input. It is supposed to return true if there is an element from the first array and an element from the second array whose sum is the target integer. For instance, given arrays a=[1,4,3] and b=[2,6,3] and target 7, the method should return true because a[1]+b[2] = 4+3 = 7. However, if the target is 8, it should return false, as no element in array a, added with an element of array b results in 8. What should be the body of this method? public static boolean foo (int[] a, int[] b, int target) // What should go here? (A) for (int i = 0; i < a.length + b.length; i++) if(a[i] + b[i] == target) return true; else return false; (B) for (int i = 0; i

18. What is the value of the String referred to by the variable s after the following code executes? String fun = "bcd"; String a = ""; for (int i = 0; i < fun.length(); i++) { a = a + (char) (fun.charAt(i) + 3); String s = ""; for (int i = 0; i < a.length(); i++) { S = S + (char) (a.charAt(i) + 'A' -'a');

20. What are the elements referred to by the variable a after the following code executes? public static void main(String[] args) { int[] a = {1,2,3,4,5,6); mystery (a); public static void mystery (int[] a) { for (int i=0; i

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