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All LessonsFree Lessons (7)

About the Course

Problem Solving with Simple Programs

Problem Solving: The Bottle Filling Example Simple Program and Execution Sheet Practice Simple Programs Quiz on Problem Solving with Simple Programs

Decisions and Branching

Flowcharts and Conditional Expressions Converting Flowcharts into Execution Sheets Quiz on Decisions and Branching

Java Basics

First Java Program Fundamentals of Java Conditional Statement Categories of Errors Quiz on Java Basics Challenge: Formula Converter

Repetition with Loops

Introduction to Loops Sentinel Loops Nested Loops Quiz on Repetition with Loops Challenge: The Nearest Power of 2

Strings and Arrays

Inside the String

Array of Values

Arrays with Loops

Multi-dimensional Arrays

Quiz on Strings and Arrays

Challenge: Arithmetic Sequence

Methods

Simple User-defined Methods Method Parameters and Return Values Built-in String and Array Methods Quiz on Methods Challenge: Anagram Problem

Appendix - Complex Programs

Introduction to Complex Programs Programs of Loops Programs of String Operations Programs of Array Operations

Wrap Up

Learn to Code: Java for Absolute Beginners/

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Challenge: Arithmetic Sequence

Challenge: Arithmetic Sequence

Find the index of an outlier in an arithmetic sequence.

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Task

Task

This task requires you to find the index of the first outlier in a given array. All numbers in an array are in an arithmetic sequence, except one number.

Write a program that uses an array and finds the index of the first outlier and stores it to the variable idx. The array is guaranteed to have at least $5$ elements and the first two elements will be in the required arithmetic sequence. The value of the idx should be $- 1$ ...