Exercises

Write a function in Java that implements the following logic: Given a string, return a string made of its first 2 chars. If the string...

Write a function in Java that implements the following logic: Given a string, return a string of length 1 from its front, unless front is...

Write a function in Java called factorial() that will take a positive integer as input and returns its factorial as output.

Write a function in Java that implements the following logic: Given a string and an int n, return a string made of n repetitions of the...

Write a function in Java that implements the following logic: Given a string str and a non-empty word, return a version of the original...

Write a function in Java that implements the following logic: Given two strings, a and b, create a bigger string made of the first...

Given a string str, find all places where a three-letter combination starting with "z" and ending with "p" occurs. Return a string where...

Write a function in Java that implements the following logic: Given a string str and a non-empty word, return a string made of each...

Write a function in Java that counts the number of times the string "code" appears anywhere in the given string str, except that we'll...

Given two strings, return true if either of the strings appears at the very end of the other string, ignoring upper/lower case...

Write a function in Java that returns true if the given string str contains an occurrence of the substring "xyz" where "xyz" is not...

We'll say that a string is xy-balanced if for all the 'x' characterss in the string, there exists a 'y' character somewhere later in the...

A sandwich is two pieces of bread with something in between. Write a Java method that takes in a string str and returns the string that...

Given an array containing three ints, return the sum of all the elements. It is safe to assume that the array always has at least 3...

Given two int arrays a and b, each with two elements, return a new array with four elements containing all the elements of a followed by...

Given an int array of any length, return a new array of its first 2 elements. If the array is smaller than length 2, use whatever...

Write a function in Java that takes an int array as its parameter and returns the number of even ints it contains. Note: the % "mod"...

Given an int array, return the sum of the numbers in the array, except ignore sections of numbers starting with a 6 and extending to the...

We'll say that a value is "everywhere" in an array if for every pair of adjacent elements in the array, at least one of the pair is that...

Given an int[] array, write a function that returns an array where all the 10's have been removed. The remaining elements should shift...

Write a function in Java that takes an array and returns the sum of the numbers in the array, or 0 if the array is empty. Except the...

Given an array of int values, return true if the array contains either 3 even or 3 odd values all next to each other.

For each multiple of 10 in the given array, change all the values following it to be that multiple of 10, until encountering another...

Given an integer array length of 1 or more, return the difference between the largest and smallest values in the array. Note that the...

Return the centered average of an array of ints, which we'll say is the mean average of the values, except ignoring the largest and...