Topic 25 - more array algorithms

Slides:



Advertisements
Similar presentations
Overloading Having more than one method with the same name is known as overloading. Overloading is legal in Java as long as each version takes different.
Advertisements

CATHERINE AND ANNIE Python: Part 3. Intro to Loops Do you remember in Alice when you could use a loop to make a character perform an action multiple times?
Graohics CSC 171 FALL 2001 LECTURE 16. History: COBOL Conference on Data System Languages (CODASYL) - led by Joe Wegstein of NBS developed the.
Chapter 10 Introduction to Arrays
AP Computer Science.  Not necessary but good programming practice in Java  When you override a super class method notation.
Sanjay Goel, School of Business, University at Albany, SUNY 1 MSI 692: Special Topics in Information Technology Lecture 4: Strings & Arrays Sanjay Goel.
CS 106 Introduction to Computer Science I 03 / 17 / 2008 Instructor: Michael Eckmann.
1.7 Arrays academy.zariba.com 1. Lecture Content 1.Basic Operations with Arrays 2.Console Input & Output of Arrays 3.Iterating Over Arrays 4.List 5.Cloning.
Passing Other Objects Strings are called immutable which means that once a String object stores a value, it never changes –recall when we passed a message.
CompSci Today’s topics Java Review Just a bunch of headings meant to trigger questions A contraction of previous notes Upcoming Midterm Exam Reading.
5-Aug-2002cse Arrays © 2002 University of Washington1 Arrays CSE 142, Summer 2002 Computer Programming 1
Problem Solving using the Java Programming Language May 2010 Mok Heng Ngee Day 5: Arrays.
1 © 2002, Cisco Systems, Inc. All rights reserved. Arrays Chapter 7.
Topic 25 - more array algorithms 1 "To excel in Java, or any computer language, you want to build skill in both the "large" and "small". By "large" I mean.
Advanced Computer Science Lesson 4: Reviewing Loops and Arrays Reading User Input.
AP Computer Science edition Review 1 ArrayListsWhile loopsString MethodsMethodsErrors
ALGORITHMS.
2016 N5 Prelim Revision. HTML Absolute/Relative addressing in HTML.
Perl created in 1987 by Larry Wall. Perl is open source Probably best known as a CGIscripting language “Perl was designed to work more like a natural language.”
3.1 Objects. Data type. Set of values and operations on those values. Primitive/Built-In types. n Usually single values n Can build arrays but they can.
Java for Beginners University Greenwich Computing At School DASCO
Chapter 23 Sorting Jung Soo (Sue) Lim Cal State LA.
Sections 10.1 – 10.4 Introduction to Arrays
The need for Programming Languages
Chapter 6: Using Arrays.
Lecture 5 of Computer Science II
Chapter 15 Recursion.
IGCSE 4 Cambridge Data types and arrays Computer Science Section 2
Computer Science 4 Mr. Gerb
Chapter 5 Ordered List.
Chapter 15 Recursion.
Data Structures and Algorithms
Data Structures Recursion CIS265/506: Chapter 06 - Recursion.
Efficiency add remove find unsorted array O(1) O(n) sorted array
Cracking the Coding Interview
Applied Algorithms (Lecture 17) Recursion Fall-23
Building Java Programs
Java for Beginners University Greenwich Computing At School DASCO
Java for Beginners University Greenwich Computing At School DASCO
Review for Test1.
An Introduction to Java – Part I, language basics
Summary of what we learned so far
Topic 26 Two Dimensional Arrays
Arrays We often want to organize objects or primitive data in a way that makes them easy to access and change. An array is simple but powerful way to.
Iterator.
© A+ Computer Science - Arrays and Lists © A+ Computer Science -
AP Java Warm-up Boolean Array.
Announcements 3rd homework is due this week Wednesday (March 15)
Coding Concepts (Basics)
Arrays .
Coding Concepts (Data- Types)
Arrays ICS2O.
The PlayStation Example
Building Java Programs
Introduction to Data Structures
Analysis of Algorithms
Suggested self-checks: Section 7.11 #1-11
Fundaments of Game Design
Introduction to Computer Science
slides created by Marty Stepp
Common Array Algorithms
Analysis of Algorithms
Sum this up for me Let’s write a method to calculate the sum from 1 to some n public static int sum1(int n) { int sum = 0; for (int i = 1; i
Podcast Ch21f Title: HashSet Class
CS203 Lecture 15.
Announcements HW1 is due TODAY.
Introduction to java Part I By Shenglan Zhang.
Analysis of Algorithms
Introduction to Computer Science
Presentation transcript:

Topic 25 - more array algorithms "To excel in Java, or any computer language, you want to build skill in both the "large" and "small". By "large" I mean the sweeping, strategic issues of algorithms, data structures, ... what we think of basically as a degree in Computer Science. You also need skill in the "small" -- 10 or 20 line methods built of loops, logic, strings, lists etc. to solve each piece of the larger problem. Working with students in my office hours, I see what an advantage it is for students who are practiced and quick with their method code. Skill with the method code allows you to concentrate on the larger parts of the problem. Or put another other way, someone who struggles with the loops, logic, etc. does not have time for the larger issues." - Nick Parlante Stanford University, Google

More array problems write a method to change an array to a sub-array, similar to substring method "rotate" elements in an array a given amount determine how many elements in an array of Strings variables are set to null determine if the elements in an array of ints or doubles are in sorted ascending order Determine which character occurs most frequently in a file

More array problems shuffle an array determine the longest run length in an array of booleans (longest run of all booleans the same) ensure all elements in an array are within a given range given an array with ints 1 to N determine if there are any duplicates in the array

More array problems given an array, create and return an array the same as the original expect all duplicates are removed implement the sieve of Eratosthenes to find prime numbers We'll say that an element in an array is "alone" if there are values before and after it, and those values are different from it. Return a version of the given array where every instance of the given value which is alone is replaced by whichever value to its left or right is larger. (from coding bat)