Given an array of integers, return the sum of every other value in the array, starting with the first element. For example, if the array...
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Individual Exercises
Given an array of integers, return the average of all values in the array as a double
. For example, if an array containing the values...
Given two integers size
and num
, return an array that can hold size
integers and is filled with multiples of num
, starting with num
. For...
Given an array of String
s, return a single String
that is made up of all strings in the array concatenated together in order. For...
Given an array of String
s, return a single String
that is made up of all strings in the array concatenated together in reverse order. For...
Given an array of integers and an integer target
, return a count of the number of times the target
value occurs in the array.
Given an array of integers, return the largest value that occurs in the array. You may want to use the constant Integer.MIN_VALUE
, which...
Given an array of integers, return the smallest value that occurs in the array. You may want to use the constant Integer.MAX_VALUE
, which...
Given an array of double
values that contains the prices of merchandise, return the range of the prices (the difference between the...
Given an array of integers, swap each pair of adjacent elements starting with the first two. For example, if the array contains the...
Given a String
, return an array of char
values that contains the characters of the string in reverse order. For example, if the string is...
Given two strings of equal length, return an array of char
values that contains the characters of the strings in alternating order. For...
In the following code, which line will produce an error?
public class Answer { int[] nums = new int[5]; // Line 1 nums[0] = 1000000; //...
What is the complexity of searching an ArrayList?
Which of the following is a correct instantiation of an array list collection?
What interface does the Array list implement?
Do array lists automatically enlarge (or shrink) based on the size of the collection?
What is most important to know when attempting to retrieve an element from an array list?
When the index is known, what is the time complexity for accessing an element in an array list?
What is the average time complexity for inserting an element into a binary search tree?
What would be the Big O Complexity for a Bubble Sort method?
The circuit()
method is intended to take the distance a person has moved on a circuit (a track) and translate it into the position they...
Iterate through the given array and return the number of fours.
What would be the Big O Complexity for the following method?
public boolean crossRoad(boolean isSafe, int height, int length) { if...
When a method is directly recursive, what does it call?