henriquerocha / zanagram Goto Github PK
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License: MIT License
Searching speed could be improved the array is sorted and a binary search is used.
Time to load: 865276
Time to size: 4
Number of words: 370104
It takes 14min to load the words. This is too slow. Is this due to a recursive implementation?
Using a binary search tree would probably speed up execution.
Using a Binary Search Tree crashes the app with a StackOverflowError with the original dictionary file
words_alpha.txt
.
An AVL tree keeps the tree balanced so the tree height is always small even for a large amount of almost sorted words like in the original words_alpha.txt
file.
App should list all anagrams of a given word.
Searching for anagrams of "listen" takes 3386 milliseconds (around 3 seconds).
We need a solution to load a English dictionary into memory.
In order to find all the anagrams of a given word we need to first be able to generate a list of all the permutations.
fun <T : Comparable<T>> DynamicArray<out T>.bubbleSort() {
val size = size()
var swapped: Boolean
do {
swapped = false
for (i in 0 until size - 1) {
if (this[i] > this[i + 1]) {
swap(this, i, i + 1)
swapped = true
}
}
} while (swapped)
}
Using this algorithm is taking 2.8 hours to sort the array.
Exception in thread "main" java.lang.StackOverflowError
at zanagram.AppKt.add(App.kt:9)
at zanagram.AppKt.add(App.kt:9)
at zanagram.AppKt.add(App.kt:9)
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