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Resources tagged with Algorithms similar to Up a Semitone?:

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Broad Topics > Decision Mathematics and Combinatorics > Algorithms

Up a Semitone?

Stage: 5 Challenge Level:

Fifth challenge cipher

Jluuis or Even Asutguus?

Stage: 5 Challenge Level:

Sixth challenge cipher

Vital?

Stage: 5 Challenge Level:

Third challenge cipher

A Fine Thing?

Stage: 5 Challenge Level:

Second challenge cipher

Semicircle

Stage: 5 Challenge Level:

Fourth challenge cipher

Stage 5 Cipher Challenge

Stage: 5 Challenge Level:

Can you crack these very difficult challenge ciphers? How might you systematise the cracking of unknown ciphers?

Ip?

Stage: 5 Challenge Level:

Seventh challenge cipher

Sorted

Stage: 5 Challenge Level:

How can you quickly sort a suit of cards in order from Ace to King?

Weekly Challenge 41: Happy Birthday

Stage: 5 Challenge Level:

A weekly challenge concerning the interpretation of an algorithm to determine the day on which you were born.

The Best Square

Stage: 4 and 5 Challenge Level:

How would you judge a competition to draw a freehand square?

An Introduction to Computer Programming and Mathematics

Stage: 5

This article explains the concepts involved in scientific mathematical computing. It will be very useful and interesting to anyone interested in computer programming or mathematics.

Geomlab

Stage: 3, 4 and 5 Challenge Level:

A geometry lab crafted in a functional programming language. Ported to Flash from the original java at web.comlab.ox.ac.uk/geomlab

Peaches in General

Stage: 4 Challenge Level:

It's like 'Peaches Today, Peaches Tomorrow' but interestingly generalized.

Divided Differences

Stage: 5

When in 1821 Charles Babbage invented the `Difference Engine' it was intended to take over the work of making mathematical tables by the techniques described in this article.

Stretching Fractions

Stage: 4 Challenge Level:

Imagine a strip with a mark somewhere along it. Fold it in the middle so that the bottom reaches back to the top. Stetch it out to match the original length. Now where's the mark?

Procedure Solver

Stage: 5 Challenge Level:

Can you think like a computer and work out what this flow diagram does?

Vedic Sutra - All from 9 and Last from 10

Stage: 4 Challenge Level:

Vedic Sutra is one of many ancient Indian sutras which involves a cross subtraction method. Can you give a good explanation of WHY it works?

Probably a Code?

Stage: 5 Challenge Level:

Is the regularity shown in this encoded message noise or structure?

Zeller's Birthday

Stage: 4 Challenge Level:

What day of the week were you born on? Do you know? Here's a way to find out.

Odd One Out

Stage: 5 Short Challenge Level:

In this short problem, can you deduce the likely location of the odd ones out in six sets of random numbers?

Unusual Long Division - Square Roots Before Calculators

Stage: 4 Challenge Level:

However did we manage before calculators? Is there an efficient way to do a square root if you have to do the work yourself?

Route to Root

Stage: 5 Challenge Level:

A sequence of numbers x1, x2, x3, ... starts with x1 = 2, and, if you know any term xn, you can find the next term xn+1 using the formula: xn+1 = (xn + 3/xn)/2 . Calculate the first six terms of this. . . .

Tournament Scheduling

Stage: 3, 4 and 5

Scheduling games is a little more challenging than one might desire. Here are some tournament formats that sport schedulers use.

Triangle Incircle Iteration

Stage: 4 Challenge Level:

Keep constructing triangles in the incircle of the previous triangle. What happens?