I need help with writing up the Java Code.

Java homework help (fairly simple method)?

• Here are the specifications for completing the StringArray class: a) In the class StringArray write method numInArray,using the method signature below. numInArray should return the number of times the string s occurs in array A. For example, assume that array a is as shown below. [0] [1] [2] [3] [4] [5] [6] “java” “is” “nice” “so” “nice” “it” “is” Here are some examples of calls to method numInArray. Method call Returned value numInArray(a, “java”) 1 numInArray(a, “is”) 2 numInArray(a, “nice”) 2 numInArray(a, “ja”) 0 Complete method numInArray below. // postcondition: returns the number of times s occurs in a public static int numInArray(String[] a, String s) { < your code goes here > } Here is what I think the code should be: int count = 0; for(int i = 0; i<A.length(); i++) { if (s.equals(a[i])) { count++; } } return count; PART B (the one i need help with) says: Write method printAllNums, as started below. For every string s in array A, printAllNums should write (using System.out.println) the string s, followed by a colon and a space, then followed by the number of times that string occurs in array B. For example, assume that arrays A and B are as shown below. A: [0] [1] [2] [3] "ice" "cream" "is" "nice" B. [0] [1] [2] [3] [4] [5] [6] "java" "is" "nice" "so" "nice" "it" "is" The call printAllNums(A, B) should produce the following output: ice: 0 cream: 2 is: 2 nice: 2 In writing printAllNums, you may include calls to method numInArray. Assume that numInArray works as specified. Complete method printAllNums below. //postcondition: for all k such that 0<=k <A.length, prints the string A[k] followed by a colon and a //colon and a space and the number of times that a string occurs in B public static void printAllNums (String[] A, String[] B) { <code here> } thanks in advance!

• Answer:

  Nice to see that you are using the String.equals() method. Surprising a lot of people miss that issue as newer developers. Your "PART A" looks good except for the typo with the "A.length()" that should be "a.length()". You'll also want to use better descriptive names in the future since "a" could mean anything and as programs get larger or more complex, the context of "a" is lost or potentially confusing. Something like "inpArr" might work better, but that's only a personal preference on the name. For "PART B", you'll actually end up using your method from "PART A" to get some of the information. (As the other response indicated, the "cream: 2" is hopefully a typo on your part) public static void printAllNums(String[] array1, String[] array2) { for (String currStr : array1) { // this will give you the current String from "a", a colon, a space, then the number of occurrences. // Note that it uses your first method (which is probably why your teacher gave you that part first) System.out.println(currStr + ": " + numInArray(array2, currStr); } }