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해당 글 6건

<5 kyu> Gap in Primes

Gap in Primes The prime numbers are not regularly spaced. For example from 2 to 3 the gap is 1. From 3 to 5 the gap is 2. From 7 to 11 it is 4. Between 2 and 50 we have the following pairs of 2-gaps primes: 3-5, 5-7, 11-13, 17-19, 29-31, 41-43 A prime gap of length n is a run of n-1 consecutive composite numbers between two successive primes (see: http://mathworld.wolfram.com/PrimeGaps.html). We..

1/Algorithm 2017. 12. 3. 02:00

<5 kyu> Directions Reduction

Directions Reduction Once upon a time, on a way through the old wild west, a man was given directions to go from one point to another. The directions were "NORTH", "SOUTH", "WEST", "EAST". Clearly "NORTH" and "SOUTH" are opposite, "WEST" and "EAST" too. Going to one direction and coming back the opposite direction is a needless effort. Since this is the wild west, with dreadfull weather and not ..

1/Algorithm 2017. 12. 3. 01:23

<6 kyu> Stop gninnipS My sdroW!

Stop gninnipS My sdroW! Write a function that takes in a string of one or more words, and returns the same string, but with all five or more letter words reversed (Just like the name of this Kata). Strings passed in will consist of only letters and spaces. Spaces will be included only when more than one word is present. Examples: spinWords( "Hey fellow warriors" ) => returns "Hey wollef sroirraw..

1/Algorithm 2017. 12. 3. 01:06

<6 kyu> Checking Groups

Checking Groups In English and programming, groups can be made using symbols such as () and {} that change meaning. However, these groups must be closed in the correct order to maintain correct syntax. Your job in this kata will be to make a program that checks a string for correct grouping. For instance, the following groups are done correctly: ({}) [[]()] [{()}] The next are done incorrectly: ..

1/Algorithm 2017. 12. 3. 00:51

<6 kyu> Decode the Morse code

Decode the Morse code In this kata you have to write a simple Morse code decoder. While the Morse code is now mostly superceded by voice and digital data communication channels, it still has its use in some applications around the world. The Morse code encodes every character as a sequence of "dots" and "dashes". For example, the letter A is coded as ·−, letter Q is coded as −−·−, and digit 1 is..

1/Algorithm 2017. 12. 3. 00:24

<5 kyu> Weight for weight

Weight for weight My friend John and I are members of the "Fat to Fit Club (FFC)". John is worried because each month a list with the weights of members is published and each month he is the last on the list which means he is the heaviest. I am the one who establishes the list so I told him: "Don't worry any more, I will modify the order of the list". It was decided to attribute a "weight" to nu..

1/Algorithm 2017. 12. 3. 00:04