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。 o>$|SU!a
插入排序: ~\-r
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package org.rut.util.algorithm.support; )j(fWshP
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import org.rut.util.algorithm.SortUtil; "h`54}0
/** 2Z-,c;21
* @author treeroot p( HyRCH
* @since 2006-2-2 7rJ9
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* @version 1.0 [ArO$X3\
*/ (,d/JnP
public class InsertSort implements SortUtil.Sort{ JgxA^>|9;
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/* (non-Javadoc) j&
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d{iL?>'?^
*/ a5>)?m
public void sort(int[] data) {
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int temp; Qlf
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); g8rp|MOH
} Kyyih|{
} 6S2r
} lJ("6aT?
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} c-ttds
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冒泡排序: CF,8f$:2
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package org.rut.util.algorithm.support; )Xq@v']%~9
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import org.rut.util.algorithm.SortUtil; K:Mujx:
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/** /kAwe *)
* @author treeroot BQ5_s,VM
* @since 2006-2-2 [U%.Gi
* @version 1.0 ef^Cc)S-Q
*/ <8g *O2
public class BubbleSort implements SortUtil.Sort{ 0I(uddG3
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/* (non-Javadoc) ;`;G/1]#9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z={D0`
*/ mL8A2>Gig
public void sort(int[] data) { >~.Zr3P6kC
int temp; ,*q#qW!!
for(int i=0;i for(int j=data.length-1;j>i;j--){ :,urb*
if(data[j] SortUtil.swap(data,j,j-1); g&|4
} 0>I]=M]@
} 9*7Hoi4Ji
} [0d-CEp[
} JTSq{NN
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} RI#lI~&)
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选择排序: _ .-o%6
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package org.rut.util.algorithm.support; )[e%wPu4e
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import org.rut.util.algorithm.SortUtil; y21)~
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/** ?"5~Wwp.T
* @author treeroot 8=lHUn9l
* @since 2006-2-2 \.K\YAM<
* @version 1.0 eL]{#WL
*/ BUcaj.S
public class SelectionSort implements SortUtil.Sort { h9tB''ePE
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/* Gr`MGQ,
* (non-Javadoc) fF8a 1XV
* iSSc5ek4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e{^:/WcYB
*/ %s~NQ;Y
public void sort(int[] data) { N1D6D$s 0
int temp; ORV}j,Ym
for (int i = 0; i < data.length; i++) { V%X:1 8j
int lowIndex = i; x`};{oz;
for (int j = data.length - 1; j > i; j--) { 'd|Q4RE+W
if (data[j] < data[lowIndex]) { fcgDU *A%
lowIndex = j; @Fm{6^
} NqQM!B]
} ^8o_Iz)r,
SortUtil.swap(data,i,lowIndex); B2ek&<I7N
} :t2 9`x
} I$3"|7[n
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} zbF:R[)
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Shell排序: $|`t9-EA/
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package org.rut.util.algorithm.support; [dSDg2]
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import org.rut.util.algorithm.SortUtil; 7yq7a[Ra
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/** w^:V."}-$
* @author treeroot oTplxF1
* @since 2006-2-2 3s+<
* @version 1.0 C8bGae(
*/ .IW_DM-
public class ShellSort implements SortUtil.Sort{ Wx']tFn"
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/* (non-Javadoc) mkj;PYa
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )vEHLp.
*/ a>&;K@
public void sort(int[] data) { |Ak =-.
for(int i=data.length/2;i>2;i/=2){ 4~m.#6MT
for(int j=0;j insertSort(data,j,i); /pAm8vK
} J1gEjd
} AHp830\
insertSort(data,0,1); :{TmR3.
} lRa
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/** hJC
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* @param data Ef,7zKG
* @param j q 2_N90u
* @param i uFm(R/V
*/ QoT3;<r}
private void insertSort(int[] data, int start, int inc) { ~RZJ/%6F
int temp; .pB8=_e:
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Tdk2436=
} 0gwm gc/#
} ?d>P+).
} ^\7 x5gO
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} ]2aYi9)
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快速排序: q{9X.-]}
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package org.rut.util.algorithm.support; Kc2OLz#
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import org.rut.util.algorithm.SortUtil; 6h0U
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/** ABq {<2iYN
* @author treeroot T/WmS?
* @since 2006-2-2 7 BnenHD
* @version 1.0 <y\
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*/ Y?&DEKFbD
public class QuickSort implements SortUtil.Sort{ +s/N@]5nW
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/* (non-Javadoc) qmue!Fv#g
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]@ Sc}
*/
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public void sort(int[] data) { xZ S\#{
quickSort(data,0,data.length-1); bCE7hutl
} M0Kh>u
private void quickSort(int[] data,int i,int j){ xtIehr0{$I
int pivotIndex=(i+j)/2; 8XH |T^5
file://swap 8f{}ce'E*
SortUtil.swap(data,pivotIndex,j); tz0Ttu=xH
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0
int k=partition(data,i-1,j,data[j]); aCYm$6LmA
SortUtil.swap(data,k,j); w
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if((k-i)>1) quickSort(data,i,k-1); JK:mQ_
if((j-k)>1) quickSort(data,k+1,j); >XXMIz:
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} Rvu3Qo+
/** ~J. Fl[
* @param data FVC2 XxP
* @param i <*r<+S
* @param j QNa}M{5>h
* @return IioE<wS)
*/ |W~V@n8"6
private int partition(int[] data, int l, int r,int pivot) { {!{7zM%u0C
do{ f,`}hFD
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); )- 6s7
SortUtil.swap(data,l,r); '4^V4i
} _;J9q}X
while(l SortUtil.swap(data,l,r); _r?;lnWx@
return l; ]\D6;E8P-~
} QS=$#Gp
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} rs 1*H
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改进后的快速排序: R26tQbwE
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package org.rut.util.algorithm.support; LD~uI
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import org.rut.util.algorithm.SortUtil; n6!Ihip$
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/** X!+Mgh6
* @author treeroot |B{$URu
* @since 2006-2-2 ,5A>:2 zs
* @version 1.0 P8,{k
*/ 6JFDRsX>)?
public class ImprovedQuickSort implements SortUtil.Sort { N>}K+M>
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private static int MAX_STACK_SIZE=4096; (15Yw9Mv
private static int THRESHOLD=10; J6["j
/* (non-Javadoc) jC Kt;lj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CN$A-sjZ
*/ M9 2~iM
public void sort(int[] data) { J!
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int[] stack=new int[MAX_STACK_SIZE]; Q@ ) rw0$
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int top=-1; )[M<72
int pivot; R&=GB\`:a
int pivotIndex,l,r; mZ5K hPvf8
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stack[++top]=0; @6!y(e8"J]
stack[++top]=data.length-1; Y"/UYxCm|&
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while(top>0){ BWi 7v
int j=stack[top--]; u<y\iZ[
int i=stack[top--]; b%!`fn-;
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pivotIndex=(i+j)/2; ~oW8GQ
pivot=data[pivotIndex]; WGG)
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SortUtil.swap(data,pivotIndex,j); iUG/
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file://partition i{FC1tVeL_
l=i-1; + $a:X
r=j; Obc3^pV&
do{ Ae_ E;[mj
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 2-E71-J
SortUtil.swap(data,l,r); {O&liU4
} LjQ1ar\
while(l SortUtil.swap(data,l,r); hL{B9?
SortUtil.swap(data,l,j); vK.4JOlRF
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if((l-i)>THRESHOLD){ -L 'K
stack[++top]=i; ~Yz/t
stack[++top]=l-1; "0 PN
} np\Q&
if((j-l)>THRESHOLD){ 7}1Kafs
stack[++top]=l+1; +heS\I_Mp
stack[++top]=j; ])wMUJWg2
} '
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} &N7:k+E
file://new InsertSort().sort(data); 3F'dT[;
insertSort(data); ?a0}^:6
} +e]b,9.sR
/** 8}#Lo9:,d
* @param data ylxfh(
*/ '=b&)HbeK
private void insertSort(int[] data) { -0r"#48(%
int temp; x5 ~E'~_
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); vlN. OQ
} P[P72WR
} rU^ghF
} cf!k
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} Sd{"A0[A|
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归并排序: K<w5[E9V.
Q|<?$.FN"8
package org.rut.util.algorithm.support; VaIP
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import org.rut.util.algorithm.SortUtil; S2
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/** -Us% g
* @author treeroot U?^|>cMr
* @since 2006-2-2 P_g0G#`4
* @version 1.0 T\s#-f[x
*/ fG$.DvJuK
public class MergeSort implements SortUtil.Sort{ RHAr[$
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/* (non-Javadoc) :=7 '1H
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pbvEIa-Y4
*/ 5)v^
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public void sort(int[] data) { e&4wwP"`<
int[] temp=new int[data.length]; Qn3+bF4
mergeSort(data,temp,0,data.length-1); ;,})VoC\!
} r~2@#gTbl
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private void mergeSort(int[] data,int[] temp,int l,int r){ kZ[yv
int mid=(l+r)/2; Ng39D#_)
if(l==r) return ; f EiEfu
mergeSort(data,temp,l,mid); 0S7Isk2W
mergeSort(data,temp,mid+1,r); +,^M{^%
for(int i=l;i<=r;i++){ #Ii.tTk
temp=data; \q1%d.\X
} zPkPC}f(O
int i1=l; vhEs +j
int i2=mid+1; }R5&[hxh4t
for(int cur=l;cur<=r;cur++){ Odtck9L
if(i1==mid+1) `6sQlCOnF
data[cur]=temp[i2++]; RTY4%6]O
else if(i2>r) 7%!KAtc
data[cur]=temp[i1++]; hPpXB:(-0
else if(temp[i1] data[cur]=temp[i1++]; ;k%sKVP
else ZWW8Hr
data[cur]=temp[i2++]; $K5s)!
} 3M*[a~
} cH-Zj
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} ?N*@o.
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改进后的归并排序: 0a%ui2k
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package org.rut.util.algorithm.support; |M>k &p,B-
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import org.rut.util.algorithm.SortUtil; CPeK0(7Zh
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/** _rJSkZO
* @author treeroot Z_~DTO2Qg
* @since 2006-2-2 FEmlC,%
* @version 1.0 gj;G:;1m
*/ uWj-tzu
public class ImprovedMergeSort implements SortUtil.Sort { 76r
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private static final int THRESHOLD = 10; _-\{kJ
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/* T2; 9
* (non-Javadoc) q.F1Jj
* B"zg85
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3 v$4LY
*/ #}yFHM?i
public void sort(int[] data) { J5IJy3d
int[] temp=new int[data.length]; u.Yb#?
mergeSort(data,temp,0,data.length-1); X*"O'XCA
} bd*(]S9d
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private void mergeSort(int[] data, int[] temp, int l, int r) { '="){
int i, j, k; @}!$NI8
int mid = (l + r) / 2; kDa#yN\
if (l == r) +r P<m
return; :8wF0n-'
if ((mid - l) >= THRESHOLD) !`=?<Fl
mergeSort(data, temp, l, mid); 6e|5qKr
else $*-L8An?
insertSort(data, l, mid - l + 1); Cjk AQ(9
if ((r - mid) > THRESHOLD) ;<<IXXKU
mergeSort(data, temp, mid + 1, r); S$On$]~\"
else 2`m _"y
insertSort(data, mid + 1, r - mid); @il}0
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for (i = l; i <= mid; i++) { bLF0MVLM
temp = data; v[3sg2.
} d`7] reh
for (j = 1; j <= r - mid; j++) { hzo,.hS's
temp[r - j + 1] = data[j + mid]; qW >J-,61/
} #[yl;1)
int a = temp[l]; &>fd:16
int b = temp[r]; e"/X*xA
for (i = l, j = r, k = l; k <= r; k++) { AR3=G>hO,
if (a < b) { L"/ato
data[k] = temp[i++]; ^D[;JV
a = temp; k>hZ
} else { k8V0-.UL}
data[k] = temp[j--]; Wh_c<E}&
b = temp[j]; CI'5JOqP
} E/;YhFb[
} \c}r6xOr
} >C3 9`1
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/** .utL/1Ej
* @param data 9E?>B3t^
* @param l \ y",Qq?
* @param i oP
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*/ h--bN*}H2
private void insertSort(int[] data, int start, int len) { HI 61rXNF
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 7HFO-r118
} 0eP~F2<bC
} ev
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} B ;$8<
} 0u\@-np
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堆排序: /[5up
^umAfk5r?H
package org.rut.util.algorithm.support; rnE'gH(V'
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import org.rut.util.algorithm.SortUtil; +-d>Sl (
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/** ^yTN(\9
* @author treeroot U$bM:d
* @since 2006-2-2 4*X$Jle|
* @version 1.0 V485Yn!$(
*/ MsQS{ok+
public class HeapSort implements SortUtil.Sort{ +Ti@M1A&
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/* (non-Javadoc) DlI|~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +Wc[$,vk
*/ 9k&$bC+Q
public void sort(int[] data) { do7{
MaxHeap h=new MaxHeap(); K?
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h.init(data); FG\?_G
for(int i=0;i h.remove(); %xz02$k
System.arraycopy(h.queue,1,data,0,data.length); sNVD"M,
} S(l^TF
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private static class MaxHeap{ !
+ 7ve[z
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void init(int[] data){ "RA$Twhj
this.queue=new int[data.length+1]; O~VUViS6$
for(int i=0;i queue[++size]=data; n0q(EQy1U
fixUp(size); >w2u
} -bF+uCfba
} *
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+
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private int size=0; ppjrm
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private int[] queue; [bXZPIz;j
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public int get() { Fu$sfq
return queue[1]; 'P#I<?vB
} 9nE%r\H
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public void remove() { Q23y.^W%c
SortUtil.swap(queue,1,size--); .O^|MhBJu
fixDown(1); 0
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} {5h_$a!TaU
file://fixdown NYeg,{q
private void fixDown(int k) { ,<7f5qg"'
int j; 3Y8
V?* 1|
while ((j = k << 1) <= size) { Z#04 ]
if (j < size %26amp;%26amp; queue[j] j++; Tw5BvB1
if (queue[k]>queue[j]) file://不用交换 4r*6fJ*bJ
break; cS"6%:hQ
SortUtil.swap(queue,j,k); ZHJzh\?
k = j; aXagiz\;
} Wwz{98,K
} (x@"Dp=MZW
private void fixUp(int k) { =[&Jxy>Y
while (k > 1) { I_rVeMw=
int j = k >> 1; Fz% n!d
if (queue[j]>queue[k]) XEI]T~
break; (
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SortUtil.swap(queue,j,k); Lsdu:+-
k = j; j>iM(8`t1
} T5h[{J^
} =Sq7U^(>
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} `UR.Rn/x
cg5DyQ(
} `g~-5Z~J
5{> cfN\q
SortUtil: m[f\I^\%8
%y q}4[S+o
package org.rut.util.algorithm; I
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import org.rut.util.algorithm.support.BubbleSort; a4yU[KK
import org.rut.util.algorithm.support.HeapSort; NO1PGen
import org.rut.util.algorithm.support.ImprovedMergeSort; s5HbuyR^
import org.rut.util.algorithm.support.ImprovedQuickSort; T"jl;,gr]J
import org.rut.util.algorithm.support.InsertSort; LFC k6 R
import org.rut.util.algorithm.support.MergeSort; >+r2I%
import org.rut.util.algorithm.support.QuickSort; vhC"f*
import org.rut.util.algorithm.support.SelectionSort; ?m6E@.{
import org.rut.util.algorithm.support.ShellSort; VbjFQ@[l!
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/** Z6p>R;9n
* @author treeroot I(.XK ucU
* @since 2006-2-2 w#XJ!f6*_9
* @version 1.0 XV&