forked from code-clash/look-and-say
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42 lines
1.3 KiB
Java
42 lines
1.3 KiB
Java
import java.util.*;
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class Solution {
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public static void main(String[] args) {
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Scanner in = new Scanner(System.in);
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// read values with in.next...() methods
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int iterations = in.nextInt();
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// code your solution here
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String sequence = getSequence(iterations, new StringBuilder("1"));
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// Write result with System.out.println()
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System.out.println(sequence);
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}
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private static String getSequence(int input, StringBuilder previousSequence) {
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if (input == 0) {
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return previousSequence.toString();
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}
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int counter = 0;
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StringBuilder sequence = new StringBuilder();
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char currentCharacter = previousSequence.charAt(0);
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for (int i = 0; i < previousSequence.length(); i++) {
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char character = previousSequence.charAt(i);
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if (character != currentCharacter) {
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sequence.append(counter) ; //first add the count
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sequence.append(currentCharacter); //count follwed by the actual number
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counter = 0;
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currentCharacter = character;
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}
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counter++;
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}
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sequence.append(counter) ; //first add the count
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sequence.append(currentCharacter); //count follwed by the actual number
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return getSequence(input - 1, sequence);
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}
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}
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