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  1. import java.util.LinkedList
  2. import java.util.StringTokenizer
  3.  
  4. fun main() {
  5.     val br = System.`in`.bufferedReader()
  6.     val queue = LinkedList<Char>()
  7.     val str = br.readLine()
  8.     for (c in str) {
  9.     	queue.add(c)
  10.     }
  11.     val m = br.readLine().toInt()
  12.  
  13.     var index = queue.size
  14.     repeat(m) {
  15.         val token = StringTokenizer(br.readLine())
  16.         when (token.nextToken().first()) {
  17.             'L' -> { if (index > 0) index-- }
  18.             'D' -> { if (index < queue.size) index++ }
  19.             'B' -> {
  20.                 if (index > 0) {
  21.                     index--
  22.                     queue.removeAt(index)
  23.                 }
  24.             }
  25.             'P' -> {
  26.                 queue.add(index, token.nextToken().first()) 
  27.                 index++
  28.             }
  29.         }
  30.         println(queue)
  31.     }
  32.  
  33.     val sb = StringBuilder()
  34.     for (c in queue) {
  35.         sb.append(c)
  36.     }
  37.     println(sb)
  38. }
Success #stdin #stdout 0.08s 40948KB
comments (?)
stdin
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abc
9
L
L
L
L
L
P x
L
B
P y
stdout
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[a, b, c]
[a, b, c]
[a, b, c]
[a, b, c]
[a, b, c]
[x, a, b, c]
[x, a, b, c]
[x, a, b, c]
[y, x, a, b, c]
yxabc
https://ideone.com/n8ZsG3
language:
Kotlin (kotlin 1.3.21)
created:
4 days ago
visibility:
public

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