-
Notifications
You must be signed in to change notification settings - Fork 0
/
Utils.kt
35 lines (31 loc) · 922 Bytes
/
Utils.kt
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
package sorts
import sorts.selectionsort.selectionSort
fun <T> MutableList<T>.swapAt(first: Int, second: Int) : Boolean {
val aux = this[first]
this[first] = this[second]
this[second] = aux
return true
}
infix fun<T : Comparable<T>> MutableList<T>.rightAlign(element: T) {
if (this.size < 2) return
var searchIndex = this.size - 2
while (searchIndex >= 0) {
if (this[searchIndex] == element) {
var moveIndex = searchIndex
while (moveIndex < this.size - 1 && this[moveIndex + 1] != element) {
swapAt(moveIndex, moveIndex + 1)
moveIndex++
}
}
searchIndex--
}
}
fun <T: Comparable<T>> MutableList<T>.biggestDuplicate() : T? {
this.selectionSort()
for (i in (1 until this.size).reversed()) {
if (this[i] == this[i - 1]) {
return this[i]
}
}
return null
}