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algorithm:radix_sort [2016/06/07 14:02] – 만듦 ledyxalgorithm:radix_sort [2021/02/07 03:15] (current) – external edit 127.0.0.1
Line 41: Line 41:
  
 = 문자열 = = 문자열 =
 +
 +== 전체 문자열 ==
 <sxh java> <sxh java>
  public static String[] radixSort(String[] arr, int maxLen) {  public static String[] radixSort(String[] arr, int maxLen) {
- int bucketNum = 'z' - 'a' + 1; //문자열 비교+ int bucketNum = Character.MAX_VALUE; 
 +  
 + int charIndex = maxLen - 1; //최대길이 5이면 index 4부터 접근. 
 +  
 + Queue<String>[] buckets = new LinkedList[bucketNum]; 
 + for (int j = 0; j < buckets.length; j++) 
 + buckets[j] = new LinkedList(); // Queue 생성 
 + 
 + for (int i = 0; i < maxLen; i++) { 
 + 
 + for (int digitIndex = 0; digitIndex < arr.length; digitIndex++) { 
 +  
 + try { 
 + String str = arr[digitIndex]; 
 + 
 + if(str.length() != maxLen) { 
 + throw new Exception("[" + digitIndex + "] 문자열 길이가 최대길이와 일치하지 않습니다."); 
 + } 
 +  
 + int radix = str.charAt(charIndex); 
 +  
 +  
 + buckets[radix].offer(arr[digitIndex]); 
 + } catch (Exception e) { 
 + System.err.println(e.getMessage()); 
 + return null; 
 + } 
 +  
 + } 
 + 
 + int pos = 0; 
 + for (int bucketIndex = 0; bucketIndex < bucketNum; bucketIndex++) { 
 + while (!buckets[bucketIndex].isEmpty()) { 
 + arr[pos] = buckets[bucketIndex].poll(); 
 + pos++; 
 + } 
 + } 
 + 
 + charIndex--; 
 + } 
 +  
 + return arr; 
 + } 
 +</sxh> 
 + 
 +== 알파벳 == 
 +<sxh java> 
 + public static String[] radixSort(String[] arr, int maxLen) { 
 + int bucketNum = 'z' - 'a' + 1;
   
  int charIndex = maxLen - 1; //최대길이 5이면 index 4부터 접근.  int charIndex = maxLen - 1; //최대길이 5이면 index 4부터 접근.
algorithm/radix_sort.1465304573.txt.gz · Last modified: 2021/02/07 03:15 (external edit)