Java question: Write a method printCombinationR(int[] array, int r) that generates and prints all possible combinations...

Java question: Write a method printCombinationR(int[] array, int r) that generates and prints all possible combinations of r elements in array of size n,. For example, if input array is {1, 2, 3, 4} and r is 2, then output should be {1, 2}, {1, 3}, {1, 4}, {2, 3}, {2, 4} and {3, 4}.

I kind of know how to write this with DFS with four or five formal parameters, however I don't know how to solve it after the formal parameters are restricted by only using (int[] array, int r).

Expert Solution

venereology answered 3 months ago

Write a java method that takes a string and returns an array of int that contains...

Write a java method that takes a string and returns an array of int that contains the corresponding alphabetic order of each letter in the received string: An illustration: the method takes: "Sara" the method returns: {4,1,3,2} another illustration: the method takes: "hey" the method returns: {2,1,3}

Write a program that generates and prints out in a neat format all possible truth tables...

Write a program that generates and prints out in a neat format all possible truth tables with three propositional variables p, q, and r. Your program should also number generated truth tables and output the numbers so it is clear how many total tables were generated. Your program output may look like the following (Note: only the beginning of the output is shown): Truth table 1: p q r proposition ----------------- F F F F F F T F F...

Write a method which is passed A[], which is an array of int, and an int...

Write a method which is passed A[], which is an array of int, and an int passingScore. The method returns the number of items in A[] which are greater than or equal to passingScore. Write a method which is passed an array of int A[]. The method returns true if A[] is the same backwards and forwards. Write a method same( ), which is passed two arrays of int. The method returns true if the two arrays contain exactly the...

how to write in java; Write a method int[] coPrime[int num, int[]numbers] { // instructions are...

how to write in java; Write a method int[] coPrime[int num, int[]numbers] { // instructions are that it returns an array of all the elements of the int[] array numbers which are coprime with x } Note that the array that is returned may be an empty array--you will have to count how many times gcf(x, numbers[i]) == 1. ASSUME numbers is not null and not empty.

Write a static method remove(int v, int[] in) that will return a new array of the...

Write a static method remove(int v, int[] in) that will return a new array of the integers in the given array, but with the value v removed. For example, if v is 3 and in contains 0, 1, 3, 2, 3, 0, 3, and 1, the method will return an array containing 0, 1, 2, 0, and 1. Hint: You can follow two steps to solve this problem: Create an array in the method, let say you called it result....

Write a method that displays every other element of an array. Write a program that generates...

Write a method that displays every other element of an array. Write a program that generates 100 random integers between 0 and 9 and displays the count for each number. (Hint: Use an array of ten integers, say counts, to store the counts for the number of 0s, 1s, . . . , 9s.) Write two overloaded methods that return the average of an array with the following headers: public static int average(int[] intArray) public static double average(double[] dArray) Also,...

In java write a method that will take an array and change it into a linkedlist...

In java write a method that will take an array and change it into a linkedlist and then display it in the main method

IN JAVA Write a program with a method that returns an array. The method should accept...

IN JAVA Write a program with a method that returns an array. The method should accept as input a comma-delimited string with three values from a user. The array should store each value in a different element. Use Try..Catch error handling and print any failure messages, or print success from within method if the execution is successful (see Chapter 13 in the text). Call the method from the main method of the program to demonstrate its functionality by looping through...

（java）Write a recursive method public static int sumForEachOther(Int n) that takes a positive Int as an...

（java）Write a recursive method public static int sumForEachOther(Int n) that takes a positive Int as an argument and returns the sum for every other Int from n down to 1. For example, sumForEachOther(8) should return 20, since 8+6+4+ 2=20.And the call sumForEachOther(9) should return 25 since 9+7+5 + 3+1-=25. Your method must use recursion.

Write a Java program with comments that randomly generates an array of 500,000 integers between 0...

Write a Java program with comments that randomly generates an array of 500,000 integers between 0 and 499,999, and then prompts the user for a search key value. Estimate the execution time of invoking the linearSearch method in Listing A below. Sort the array and estimate the execution time of invoking the binarySearch method in Listing B below. You can use the following code template to obtain the execution time: long startTime = System.currentTimeMillis(); perform the task; long endTime =...

Question