New... Java Help Java Example Solution Code Java String Introduction (video) Java Substring v2 (video) Java String Equals and Loops Java String indexOf and Parsing Java If and Boolean …

Java Python Warmup-1 chance Simple warmup problems to get started (solutions available). New videos: String Introduction, String Substring, If Boolean Logic 1, If Boolean Logic 2

Java Python Logic-1 chance Basic boolean logic puzzles -- if else && || !. New videos: If Boolean Logic 1, If Boolean Logic 2

Java Python Recursion-1 chance Basic recursion problems. Recursion strategy: first test for one or two base cases that are so simple, the answer can be returned immediately. Otherwise, …

Java Python Array-1 chance Basic array problems -- no loops.. Use a [0], a [1], ... to access elements in an array, a.length is the length (note that s.length () is for Strings). Allocate a new …

Java Python String-1 chance Basic string problems -- no loops. Use + to combine Strings, str.length () is the number of chars in a String, str.substring (i, j) extracts the substring starting …

The "char" type in Java represents a single character and is written in single quotes like this: 'e'. Here's a version of the twoE () method which uses str.charAt (i) to access each char of a string.

Java Python AP-1 chance AP CS medium problems. These problems are based on free response questions from old AP CS-A exams, 2004 and later. Some are from the exams and some were …

CodingBat Python offers free live coding problems to practice and enhance Python programming skills with problem descriptions and sample outputs.

Java Help Java Example Solution Code Java String Introduction (video) Java Substring v2 (video) Java String Equals and Loops Java String indexOf and Parsing Java If and Boolean Logic If …