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csHjavaA-2019

about this document

revision

Explore

traverse and process

adding some processing to the traverse of an array

pre-standard algorithm

omit need for updating variable for result

nested IF within loop

pre-search: display matched items

use comparators to identify large, small values

use updating variable with n5: running total

Data lists

Text

names

produce initials, initial + surname, surname first, full name, username, email address

Phone numbers

convert format: international, remove -, use ()

post codes

extract outer code and inner code, use length

NATO alphabet

display character and word

convert car reg plate to NATO alphabet

convert letters to characters, casting

elements - single letter names

display symbol and element name

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Integer

Primes (<100)

2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97

choose a prime at random

costs

(pence, convert to £ and pence using modulo)

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triathlon

calculate total seconds, display as hours, minutes, seconds

swim (seconds)

bike (seconds)

run (seconds)

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Real values

Note frequencies (Hz)

for a given note, its frequency is half that of the note 1 octave higher

square roots (0-39)

exploring rounding, int and double type, casting

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Boolean

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Character

' ', '!', '"', '#', '$', '%', '&', ''', '(', ')', '*', '+', ',', '-', '.', '/', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', ':', ';', '<', '=', '>', '?', '@'

'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'

'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z'

casting, int, char and String

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