Could anyone can writes these four classes java codes step by step? The following words are requirements

Thank you!!!!

/** * A collection of methods related to int[]. */ public class ArrayLab {

/** * Return whether k is in array[start..end]. * Precondition: the length of array is at least end+1 * @param array the array of int values. * @param start the index of the start of the range to be searched. * @param end the index of the end of the range to be searched. * @param k the number to search for. * @return true if k is in array[start..end] */ public static boolean contains(int[] array, int start, int end, int k) { return false; }

/** * Create a String that has the contents of list[0..n-1] on one line, * separated by spaces and surrounded by { and }. * @param list the sorted array. * @param n the number of items in list to put in the string. * @return the first n elements of the array, separated by spaces, and surrounded by { and }. */ public static String arrayToString(int[] list, int n) { return null; }

/** * Remove k from list[0..n-1]. * Precondition: list[0..n-1] is sorted, and k is an element of list[0..n-1]. * Postcondition: list[0..n-2] is sorted. * @param list the sorted array. * @param n the number of items in list. * @param k the number to remove from list. */ public static void remove(int[] list, int n, int k) { }

/** * Insert k into list where it belongs. * Precondition: list[0..n-1] is sorted, and list[n] is unused. * Postcondition: list[0..n] is sorted. * @param list the sorted array. * @param n the number of items in list. * @param k the number to add to list. */ public static void insert(int[] list, int n, int k) { } }