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December 18, 2015 01:39
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Some exercises using io-lang
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// Fabonacci using recursion and non-recursion | |
fib := method(k, | |
first := 0 | |
sum := 1 | |
for(i, 1, k - 1, tmp := sum;sum := sum + first;first := tmp) | |
sum | |
) | |
for(i, 1, 10, fib(i) println) | |
"" println | |
fib2 := method(k, | |
if (k == 1 or k == 2, return 1) | |
fib2(k - 1) + fib2(k - 2) | |
) | |
for(i, 1, 10, fib2(i) println) | |
"" println | |
// Override the / so that return 0 when the denominator is 0 | |
originDiv := Number getSlot("/") | |
Number / := method(i, | |
if (i == 0, 0, self originDiv(i)) | |
) | |
10 / 0 println // => 0 | |
10 originDiv(0) println // => inf | |
"" println | |
Number / := Number originDiv(Number) | |
// Add all elements of the two dimentional array(list) | |
sumOfBiArr := method(l, | |
sum := 0 | |
l foreach(sub, | |
sub foreach(v, sum = sum + v) | |
) | |
sum | |
) | |
sumOfBiArr(list(list(1, 2, 3), list(4, 5, 6), list(7, 8))) println | |
// Average of list | |
List myAverage := method( | |
sum := 0 | |
self foreach(v, if(v type != "Number", Exception raise("#{v} is not a number" interpolate), sum = sum + v)) | |
sum / self size | |
) | |
list(1, 2, 3) myAverage println | |
// Add dim method to proto of list to alloc memory for it | |
MultiList := List clone | |
MultiList dim := method(x, y, | |
self setSize(y) | |
for(i, 0, self size - 1, self atPut(i, list() setSize(x))) | |
) | |
MultiList set := method(x, y, value, | |
self at(y) atPut(x, value) | |
) | |
MultiList get := method(x, y, | |
self at(y) at(x) | |
) | |
matrix := MultiList clone | |
matrix dim(3, 4) | |
matrix set(1, 2, 10) | |
matrix get(1, 2) println | |
matrix println | |
// Serialize matrix and deserialize it | |
File with("matrix.data") open write(matrix serialized) close | |
new_matrix := doString( | |
File with("matrix.data") open readLines join | |
) | |
new_matrix println | |
// Guess the random number | |
guess := method( | |
n := 10 | |
num := Random clone setSeed(1) value(1, 100) floor | |
stdIO := File standardInput | |
n repeat( | |
"Guess the number 1..100:" println | |
guess := stdIO readLine asNumber | |
if (guess > num, | |
"Bigger!" println, | |
if (guess < num, | |
"Smaller!" println, | |
"Bingo!" println;return | |
) | |
) | |
) | |
) | |
guess |
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