用Java语言实现的各种排序,包括插入排序、冒泡排序、选择排序、Shell排序、快速排序、归并排序、堆排序、SortUtil等。 C(}^fJ6r
插入排序: E!uJ6\
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package org.rut.util.algorithm.support; V- /YNRV
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import org.rut.util.algorithm.SortUtil; }4Zkf<#7$
/** f`,-b
* @author treeroot 5lGQ#r
* @since 2006-2-2 7"#f!.E
* @version 1.0 d)\2U{
*/ |88CBiu}
public class InsertSort implements SortUtil.Sort{ uj)yk*
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/* (non-Javadoc) Oc#>QZ3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^}hJL7O'
*/ z4bN)W )p
public void sort(int[] data) { ![
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int temp; dIvy!d2l
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); wE?CvL
} 7N|
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冒泡排序: 5\xr?`VZ
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package org.rut.util.algorithm.support; C!5I?z&
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import org.rut.util.algorithm.SortUtil; i *'Z3Z)
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/** 07FT)QTE
* @author treeroot fCg@FHS&^
* @since 2006-2-2 ';Nu&D#Ph
* @version 1.0 St+ "ih%
*/ :G#KB'
public class BubbleSort implements SortUtil.Sort{ ?,>5[Ha^?
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/* (non-Javadoc) oPsK:GC`U
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NCn`}QP
*/ "H$@b`)
public void sort(int[] data) { \ADLMj`F|
int temp; <<sE`>)
for(int i=0;i for(int j=data.length-1;j>i;j--){ #jm@N7OZ
if(data[j] SortUtil.swap(data,j,j-1); =DC3a3&%
} ~;8I5Sge
} x}|+sS,g
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选择排序: ?2ItTrlB
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package org.rut.util.algorithm.support; Gc'M[9Mh
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import org.rut.util.algorithm.SortUtil; Y&5.9 s@'
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/** Fm5Q&'`l
* @author treeroot ?!y"OrHg
* @since 2006-2-2 j`9Qzi1
* @version 1.0 U<rI!!#9
*/ Pj&A=
public class SelectionSort implements SortUtil.Sort { r**f,PDZ
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/* {[P!$
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* (non-Javadoc) M*(H)i;s:w
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1O0X-C,wo$
*/ 8#l+{`$z
public void sort(int[] data) { /?P!.!W&
int temp; 03_pwB)^
for (int i = 0; i < data.length; i++) { +`Pmq}ey
int lowIndex = i; 0 sh~I
for (int j = data.length - 1; j > i; j--) { )NIv "Q
if (data[j] < data[lowIndex]) { iD714+N(
lowIndex = j; ]-bQNYKX
} (;ADW+.`J
} |vz9Hs$@l
SortUtil.swap(data,i,lowIndex); 96}eR,
} 1qZG`Vz
} >pdnCv_c
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Shell排序: RX>2~^
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package org.rut.util.algorithm.support; ?Oc
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import org.rut.util.algorithm.SortUtil; CmHyAw(
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/** RG}}Oh="v
* @author treeroot ,H{={aln
* @since 2006-2-2 4.w"(v9 V
* @version 1.0 MUwxgAG`G
*/ J|5Ay1eF-
public class ShellSort implements SortUtil.Sort{ dB7ZT0L\
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/* (non-Javadoc) I_>`hTiR
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v2>Z^
*/ #&BS
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public void sort(int[] data) { niz 'b]] +
for(int i=data.length/2;i>2;i/=2){ wE6A
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for(int j=0;j insertSort(data,j,i); 328L)BmW
} V|: qow:F
} Z&Pu8zG
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insertSort(data,0,1); lDN?|YG
} q3+8]-9|5
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/** %*K;np-q{
* @param data 1tGgDbJU
* @param j MI*Sq\-i
* @param i !y[3]8Xxv
*/ u"Y]P*[k
private void insertSort(int[] data, int start, int inc) { 0OWL
int temp; [K:29N9~4
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); =:~(m
} N|Habua<Xw
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} !_x*m@/
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} Nog(VN4I&
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快速排序: mb{q(WEPP
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package org.rut.util.algorithm.support; ~ffwLgu!
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import org.rut.util.algorithm.SortUtil; JA6";fl;
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/** IU9,
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* @author treeroot "+h/-2rA
* @since 2006-2-2 E9$H nj+m
* @version 1.0 B*79qq
*/ #PFO]j!_b
public class QuickSort implements SortUtil.Sort{ D^?_"wjW
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/* (non-Javadoc) u)~s4tP4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ab4LTF|
*/ !y*oF{RZ
public void sort(int[] data) { [W;[v<E;
quickSort(data,0,data.length-1); ^yVl"/
} uJ8{HB
private void quickSort(int[] data,int i,int j){ -J?~U2
int pivotIndex=(i+j)/2; D=&K&6rr
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SortUtil.swap(data,pivotIndex,j); 9@y3IiZ"}
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int k=partition(data,i-1,j,data[j]); (h,Ws-O
SortUtil.swap(data,k,j); <L&eh&4c
if((k-i)>1) quickSort(data,i,k-1); F,pCR7o>
if((j-k)>1) quickSort(data,k+1,j); ;k}H(QI
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} f#OQ (WTJE
/** ZqK]jT6V/X
* @param data %rcFT_
* @param i jBRPR
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* @param j 1X&B:_
* @return vGN3 YcH
*/ ;J=:IEk
private int partition(int[] data, int l, int r,int pivot) { R|Y~u* D
do{ U
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); \ja `c)x
SortUtil.swap(data,l,r); GYoseqZM
} .'lN4x
while(l SortUtil.swap(data,l,r); &HL{LnLP@/
return l; oD0EOT/E
} H[nz]s
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} &yLc1#H
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改进后的快速排序: TSQhX~RN
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package org.rut.util.algorithm.support; r0btC@Hxy
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import org.rut.util.algorithm.SortUtil; :Tb7r6
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/** bU+9Gi@v
* @author treeroot tIGs>, a=
* @since 2006-2-2 M&[b.t*
* @version 1.0 F$yeF^\g
*/ [Vp\$;\nT
public class ImprovedQuickSort implements SortUtil.Sort { Le&;g4%
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private static int MAX_STACK_SIZE=4096; ML=z<u+
private static int THRESHOLD=10; ^:z7E1~
/* (non-Javadoc) f3&/r
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |!Ists
*/ A.U'Q|
public void sort(int[] data) { fU
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int[] stack=new int[MAX_STACK_SIZE]; IG|\:Xz
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int top=-1; v{koKQ'Y()
int pivot; CZ tiWZ
int pivotIndex,l,r; M/B/b<['
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stack[++top]=0; w-FHhf
stack[++top]=data.length-1; ]^'ZiyJX
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while(top>0){ kzi|$Gs<