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。 ?)(-_N&T
插入排序: )feZ&G]
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package org.rut.util.algorithm.support; rPqM&&+
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import org.rut.util.algorithm.SortUtil; +%u3% }
/**
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* @author treeroot het<#3Bo
* @since 2006-2-2 sf# px|~9
* @version 1.0 `Pc<0*`a
*/ @qj]`}Gx'
public class InsertSort implements SortUtil.Sort{ BMu Efa^
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/* (non-Javadoc) HEIg_6sb
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cC+2%q B
*/ _L$a[zH
public void sort(int[] data) { ={V@Y-5T
int temp; 5b*knN>
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); SY%y *6[6
} 85;bJfY
} ( }Bb=~
} 0K26\1
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} &
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冒泡排序: L/`1K_\l
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package org.rut.util.algorithm.support; |%mZ|,[
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import org.rut.util.algorithm.SortUtil; s&-MJ05y
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/** |iUC\F=-
* @author treeroot *X2PT(e[
* @since 2006-2-2 x3+{Y
* @version 1.0 c@3 5\!9
*/ $D#h, `
public class BubbleSort implements SortUtil.Sort{ nReld
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/* (non-Javadoc) dIlpo0; F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !]82$
*/ dnU-v7k,{
public void sort(int[] data) { Z?!AJY
int temp; ,_Bn{T=U
for(int i=0;i for(int j=data.length-1;j>i;j--){ FpA t
if(data[j] SortUtil.swap(data,j,j-1); s(3HZ>qx;
} 10*Tk 8
} #X?[")R
} %HoD)OJe
} xd^Pkf
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} 9n{Y6I
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选择排序: )Ak#1w&q
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package org.rut.util.algorithm.support; ^Z?m)qxvB
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import org.rut.util.algorithm.SortUtil; e8^/S^ =&d
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/** &l1t5 !
* @author treeroot "5~?`5Ff
* @since 2006-2-2 f(D'qV T{
* @version 1.0 @ztT1?!e
*/
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public class SelectionSort implements SortUtil.Sort { `v``}8tm
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/* |xFA}
* (non-Javadoc) #xGP|:m
* 1LRP
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RdWn =;
*/ if|5v^/
public void sort(int[] data) { )__sw
int temp; -@"3`uv"
for (int i = 0; i < data.length; i++) { jc9C|r
int lowIndex = i; E4892B:`
for (int j = data.length - 1; j > i; j--) { jsE8=zZs
if (data[j] < data[lowIndex]) { `mz}D76~#
lowIndex = j; ]A%3\)r
} 8$_{R!x
} 1n^N`lD8]6
SortUtil.swap(data,i,lowIndex); *eIX"&ba
} XKky-LeJ
} z:f&k}(
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} 6LCtWX
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Shell排序: )Y)_T&O
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package org.rut.util.algorithm.support; it\$Pih]
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import org.rut.util.algorithm.SortUtil; yO%^[c?
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/** {. 9BG&
* @author treeroot >2{Y5__+e
* @since 2006-2-2 @iuX~QA[9
* @version 1.0 6I"KomJ9
*/ TF:'6#p
public class ShellSort implements SortUtil.Sort{ D=z~]a31!
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/* (non-Javadoc) :VlA2Ih&q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8)9-*Bzj
*/ jSE)&K4nI
public void sort(int[] data) { v3Vve:}+
for(int i=data.length/2;i>2;i/=2){ tJ;qZyy(
for(int j=0;j insertSort(data,j,i); MQwxQ{
} ZMgsuzg
} M@{?#MkS%
insertSort(data,0,1); N~$>| gn
} #9|&;C5',!
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/** zJw5+
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* @param data <WIIurp
* @param j #E!^oZm<Z
* @param i xS1n,gTA
*/ bfz7t!A)A
private void insertSort(int[] data, int start, int inc) { B=d<L^
int temp; SDC|>e9i
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); {OPEW`F
} _ZhQY,
} 9{;L7`<
} bp9RF
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} o664b$5nsI
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快速排序: jXA/G%:[
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package org.rut.util.algorithm.support; 0R)x"4Ww
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import org.rut.util.algorithm.SortUtil; $t%IJT
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/** phu,&DS!
* @author treeroot &q<k0_5Q
* @since 2006-2-2 s*Qyd{"z
* @version 1.0 >}
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*/ ;VKWY
public class QuickSort implements SortUtil.Sort{ 6{.U7="
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/* (non-Javadoc) jaEe$2F2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /.e7#-+?
*/ &'fER-
public void sort(int[] data) { W_M#Gi/AL
quickSort(data,0,data.length-1); ExtC\(X;
} Z4/D38_
private void quickSort(int[] data,int i,int j){ e7GYz7
int pivotIndex=(i+j)/2; ;:bp?(
file://swap vgy.fP"@
SortUtil.swap(data,pivotIndex,j); Aeh#
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int k=partition(data,i-1,j,data[j]); 1@OpvO5
SortUtil.swap(data,k,j); q~9-A+n
if((k-i)>1) quickSort(data,i,k-1); kfnh1|D=aY
if((j-k)>1) quickSort(data,k+1,j); ;'{7wr|9
4\-11!'08
} Y!xPmL^]?
/** nRBS&&V
* @param data v)O0i2
* @param i :8@)W<>%
* @param j s\ C ,5
* @return v Z]j%c@
*/ B<EqzP*#
private int partition(int[] data, int l, int r,int pivot) { `D%i`"~Lf&
do{ 2*75*EQCH
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); crv#IC2
SortUtil.swap(data,l,r); nPvys~D
} gamB]FPZ
while(l SortUtil.swap(data,l,r); %/I:r7UR{
return l; V$hL\`e
} [j/|)cj
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} T9$~tv,5F
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改进后的快速排序: S~:uOm2t\
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package org.rut.util.algorithm.support; _<f%==
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import org.rut.util.algorithm.SortUtil; q`p0ul,n
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/** Fb1<Ic#
* @author treeroot }+m4(lpl
* @since 2006-2-2 H_f8/H
* @version 1.0 # l9VTzi
*/ By6O@ .\V
public class ImprovedQuickSort implements SortUtil.Sort { #+D][LH4
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private static int MAX_STACK_SIZE=4096; kHr-UJ!
private static int THRESHOLD=10; 3A^AEO
/* (non-Javadoc) ?<4pYEP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y2+f)Xp_.C
*/ ]a/dvj}
public void sort(int[] data) { =SmU;t>t/
int[] stack=new int[MAX_STACK_SIZE]; &Y1h=,KR9
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int top=-1; \LJ!X3TZ
int pivot; wowf1j-
int pivotIndex,l,r; qery|0W
cr -5t4<jK
stack[++top]=0; ^@/wXj:
stack[++top]=data.length-1; XE_Lz2H`
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while(top>0){ Xbmsq,*]
int j=stack[top--]; 3(K.:376
int i=stack[top--]; TI8\qIW
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pivotIndex=(i+j)/2; HgW!Q(*
pivot=data[pivotIndex]; O1jiD_Y!9
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SortUtil.swap(data,pivotIndex,j); K?,?.!ev
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file://partition nW]CA~
l=i-1; $hCS-9%&
r=j; V?yQm4
do{ aJv+BX_,
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); :j~4mb?$
SortUtil.swap(data,l,r); <v9IK$J
} {.oz^~zs]g
while(l SortUtil.swap(data,l,r); Z0H_l/g
SortUtil.swap(data,l,j);
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bn|HvLQ"1
if((l-i)>THRESHOLD){ 8fi'"
stack[++top]=i; ylos6]zS8
stack[++top]=l-1; *MfH\X379
} ;yqHt!N
if((j-l)>THRESHOLD){ n}Eu^^d
stack[++top]=l+1; .= ~2"P
stack[++top]=j; [bKc5qp
} %n6<6t`$
@Oz3A<M
} Iu0GOy*[
file://new InsertSort().sort(data); o1\N)%
insertSort(data); eQyc<
} +MHIZI
/** *GYLj[
* @param data d]K8*a%[-
*/ WF~x`w&\
private void insertSort(int[] data) { x(Uv>k~i}
int temp; xc-[gt6
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ?`Mk$Y%my
} 9G6ZKqum
} z@ZI$.w
} ze9n}oN
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} ODKh/u_
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归并排序: e]>=;Zn
T1RY1hb|g>
package org.rut.util.algorithm.support; F@ |(
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import org.rut.util.algorithm.SortUtil; Ivcy=W=Jk
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/** "+ {2!
* @author treeroot 3rZPVR$))
* @since 2006-2-2 'S74Ys=-0
* @version 1.0 !"/"Mqs3$
*/ [giw(4m#y
public class MergeSort implements SortUtil.Sort{ FeZW S>N
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/* (non-Javadoc) (p'/a.bn
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UWqiA`,
*/ Fsq)co
public void sort(int[] data) { B
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int[] temp=new int[data.length]; WC_U'nTu4
mergeSort(data,temp,0,data.length-1); P!j*4t
} 3qu?qD
h)W#
private void mergeSort(int[] data,int[] temp,int l,int r){ l| \ -d
int mid=(l+r)/2; *j <#5=l
if(l==r) return ; =d~pr:.F
mergeSort(data,temp,l,mid); ;InMgo,
mergeSort(data,temp,mid+1,r); <WmjjD
for(int i=l;i<=r;i++){ ]RadwH"0!
temp=data; Zs0;92WL
} Kx[+$Qt
int i1=l; ~z41$~/
int i2=mid+1; .2rpQa/h
for(int cur=l;cur<=r;cur++){ Y>E` 7n
if(i1==mid+1) #jxPh!%9
data[cur]=temp[i2++]; .bV^u
else if(i2>r) *>EV4Hl
data[cur]=temp[i1++]; m4~~ q[t
else if(temp[i1] data[cur]=temp[i1++]; c":2<:D&
else e<A>??h^
data[cur]=temp[i2++]; E)p[^1WC
} (VC Jn<@@
}
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} )"tM[~e`
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改进后的归并排序: X
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package org.rut.util.algorithm.support; 6"[,
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import org.rut.util.algorithm.SortUtil; 6I_4{
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/** \SgBI/L^
* @author treeroot &(o&Y
* @since 2006-2-2 >G [:Q
s
* @version 1.0 h y\iot
*/ X*Q<REDB
public class ImprovedMergeSort implements SortUtil.Sort { 0E3;f;'X
*|6vCR
private static final int THRESHOLD = 10; ]_!NmB_3
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/* LH@Kn?R6
* (non-Javadoc) R$eEW"]
* )T
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r#}o
+3*
*/ >B$ IrM7J
public void sort(int[] data) { _3g!_
int[] temp=new int[data.length]; }-Nc}%5
mergeSort(data,temp,0,data.length-1); olHmRJ
} z 7cA5'c
NJ$Qm.S
private void mergeSort(int[] data, int[] temp, int l, int r) { egWfKL&iy
int i, j, k; Efpju(
int mid = (l + r) / 2; rNke&z:%X_
if (l == r) TOvsW<cM
return; $p}q,f.
if ((mid - l) >= THRESHOLD) urL@SeV+$
mergeSort(data, temp, l, mid); *u[@C
else s,|v,,<+
insertSort(data, l, mid - l + 1); T#H-GOY:
if ((r - mid) > THRESHOLD) /p}pdXS
mergeSort(data, temp, mid + 1, r); R_:lp\S&
else (@*%moo
insertSort(data, mid + 1, r - mid); [KW)z#`*
@RdNAP_6
for (i = l; i <= mid; i++) { 3@0!]z^W
temp = data; u0Z MrIJ
} Pvm pWa
for (j = 1; j <= r - mid; j++) { p~-)6)We?
temp[r - j + 1] = data[j + mid]; R3#| *)q
} 9`&sZ|"3
int a = temp[l]; |uM=pm;H
int b = temp[r]; <c,iu{:
for (i = l, j = r, k = l; k <= r; k++) { ?. L]QU
if (a < b) { W yP] ]I.
data[k] = temp[i++]; 4dI`
a = temp; +5:9?&lH
} else { 4~d:@Gmk&
data[k] = temp[j--]; #=F{G4d)!=
b = temp[j]; !|J2o8g
} \MAv's4b@
} 7G Jhc
} cNy*< Tv
@,]$FBT"5
/** [a#*%H{OC
* @param data M'NOM>8
* @param l Lr "V
* @param i j}G9+GX~,
*/ 5E${
private void insertSort(int[] data, int start, int len) { h~=~csya:
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ~KxK+6[ :
} HeHo?<>|d
}
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} r;"Qu
} (J
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堆排序: z;&J9r$`
rFW,x_*_vP
package org.rut.util.algorithm.support; l%
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import org.rut.util.algorithm.SortUtil; aL8Z|*
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/** ztC,[
* @author treeroot T>5N$i
* @since 2006-2-2 hz-^9U
* @version 1.0 pO N@
*/ PJ)d5D%T
public class HeapSort implements SortUtil.Sort{ w!Ii
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/* (non-Javadoc) jZ<f-Ff0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'pT8S
*/ K/!>[d
public void sort(int[] data) { L,sXJ23.
MaxHeap h=new MaxHeap(); 8?hj}}H
h.init(data); K6nNrd}p:
for(int i=0;i h.remove(); M1K[6V!
System.arraycopy(h.queue,1,data,0,data.length); ii ^Nxnc=
} LiJ. /
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private static class MaxHeap{ f3mQd}<L
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void init(int[] data){ Aj"fkY|Q
this.queue=new int[data.length+1]; YcM0A~<
for(int i=0;i queue[++size]=data; oLt%i:, A
fixUp(size); + ;B K|([#
} ,d8*7my
} 2&2t8.<
w(q\75
private int size=0; i(S}gH4*o
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private int[] queue; N{K[sXCW
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public int get() { PC& (1kJ
return queue[1]; A3Vj3em
} (l)r.Vj
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public void remove() { >NtJ)N*
SortUtil.swap(queue,1,size--); 8q|T`ac+N
fixDown(1); W;.LN<bx
} e Y(JU5{
file://fixdown -K0!wrKC
private void fixDown(int k) { G@,XUP
int j; piAFxS<6
while ((j = k << 1) <= size) { dK7BjZTJo
if (j < size %26amp;%26amp; queue[j] j++; E7@m& R
if (queue[k]>queue[j]) file://不用交换 1*OZu.NdK
break; ;sY n=r
SortUtil.swap(queue,j,k); $6/CTQ
k = j; 9*? i89T
} |GP1[Q{
} D3C3_
@*
private void fixUp(int k) { g 4lk
while (k > 1) { \C"hL(4-
int j = k >> 1; A7zL\U4
if (queue[j]>queue[k]) EskD)Sl
break; mfr7w+DK
SortUtil.swap(queue,j,k); Z':w
X
k = j; `'b2 z=j
} = Tq\Ag:
} 1"RC!
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} 70N Lv
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} Mo[yRRS#
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SortUtil: mh,a}bX{
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package org.rut.util.algorithm; "_n})s
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import org.rut.util.algorithm.support.BubbleSort; \W"p<oo|H
import org.rut.util.algorithm.support.HeapSort; _''9-t;n,
import org.rut.util.algorithm.support.ImprovedMergeSort; >ui;B$=
import org.rut.util.algorithm.support.ImprovedQuickSort; v`r*Yok;`
import org.rut.util.algorithm.support.InsertSort; {z |+.D
import org.rut.util.algorithm.support.MergeSort; HD>UTX`&mc
import org.rut.util.algorithm.support.QuickSort; ,(z"s8N
import org.rut.util.algorithm.support.SelectionSort; X>U _v
import org.rut.util.algorithm.support.ShellSort; @$5=4HA
y`J8hawp
/** !PJp()
* @author treeroot 8T3Nz8Q7
* @since 2006-2-2 c2fw;)j&X
* @version 1.0 5GDg_9Bz
*/ aJ
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public class SortUtil { gm7 [m}
public final static int INSERT = 1; ? w@)3Z=u
public final static int BUBBLE = 2; fY!9i5@'
public final static int SELECTION = 3; E*d UJ.>
public final static int SHELL = 4; il$eO 7
public final static int QUICK = 5; u4DrZ-v
public final static int IMPROVED_QUICK = 6; UZJ#/x5F
public final static int MERGE = 7; H}gp`YW:4
public final static int IMPROVED_MERGE = 8; =!IoL7x
public final static int HEAP = 9; ,z`* 1b8
L`"V_
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public static void sort(int[] data) { zB'_YwW
sort(data, IMPROVED_QUICK); O[ F
} jt3=<&*Bm
private static String[] name={ gPIl:, d(
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" %#E$wz
}; W>&!~9H
q$'[&&