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CREATE OR REPLACE PACKAGE PG_MERGESORT IS
  -- Author  : wealth_khb@126.com
  -- Created : 2009-10-20 10:09:16
  -- Purpose :
  TYPE EMP_SSN_ARRAY IS TABLE OF NUMBER INDEX BY BINARY_INTEGER; ---ÉùÃ÷Êý×éÀàÐÍ
  BEST_EMPLOYEES EMP_SSN_ARRAY; ----Êý×é
  BIG_UPPER    INTEGER;
  MIDDLE_VALUE NUMBER; ---------×î´ó
  -- Public function and procedure declarations
  ------³õʼ»¯¹ý³Ì
  PROCEDURE PRO_MERGESORT(UPPER_N IN NUMBER);
  FUNCTION FUN_MERGESORT(UPPER_ARRAY IN EMP_SSN_ARRAY) RETURN EMP_SSN_ARRAY;
  FUNCTION FUN_MERGE(LEFT_ARRAY  IN EMP_SSN_ARRAY,
                     RIGHT_ARRAY IN EMP_SSN_ARRAY) RETURN EMP_SSN_ARRAY;
END PG_MERGESORT;
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CREATE OR REPLACE PACKAGE BODY PG_MERGESORT IS
  PROCEDURE PRO_MERGESORT(UPPER_N IN NUMBER) IS
    V_EMP_SSN_ARRAY EMP_SSN_ARRAY;
    V_L             INTEGER;
  BEGIN
    V_L       := 1;
    BIG_UPPER := UPPER_N; ---×î´ó³¤¶È
    ------¶ÔÊý×鸳ֵ
    FOR X IN 1 .. BIG_UPPER LOOP
      BEST_EMPLOYEES(X) := X * (DBMS_RANDOM.VALUE(X, 1));
    END LOOP;
    ---·µ»Ø 
     DBMS_OUTPUT.PUT_LINE('ÅÅÐòǰ'||V_EMP_SSN_ARRAY.COUNT||'¸ö');
    FOR P IN BEST_EMPLOYEES.FIRST .. BEST_EMPLOYEES.LAST LOOP
      DBMS_OUTPUT.PUT_LINE(BEST_EMPLOYEES(P));
    END LOOP;
    V_EMP_SSN_ARRAY := FUN_MERGESORT(BEST_EMPLOYEE


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