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。 8yJk81
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插入排序: JsAb q
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; qZyt>SAx
/** t&p:vXF2
* @author treeroot U3VsMV*Y
* @since 2006-2-2 ;1(qGy4
* @version 1.0 NZi'eZ{^`
*/ `gA5P %
public class InsertSort implements SortUtil.Sort{ Ri%Of:zZ
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/* (non-Javadoc) \sXmMc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,rvZW}=
*/ $7k04e@]
public void sort(int[] data) { ,M9hb<:m
int temp;
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 16d{IGMz
} 'DB({s
} %Tm'aY"
} ~jrU#<'G9
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} *^&iw$Qx3
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冒泡排序: EzY
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E rRMiT
package org.rut.util.algorithm.support; RAXJsF^5o
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import org.rut.util.algorithm.SortUtil; 5E!|on
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/** LnACce
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* @author treeroot O'?lW~CD.>
* @since 2006-2-2 @rDv
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* @version 1.0 epm8N /
*/ 3ks|
public class BubbleSort implements SortUtil.Sort{ ,\">o vV33
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/* (non-Javadoc) HoQ(1e$G-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lVKF^-i
*/ TTjjyZ@
public void sort(int[] data) { B\~3p4S
int temp; m:o$|7r
for(int i=0;i for(int j=data.length-1;j>i;j--){ ieK'<%dxF
if(data[j] SortUtil.swap(data,j,j-1); [+5SEr}
} _a02#
} ;Q%19f3,6
} <GU(/S!}
} 1</t #r
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} vmQ
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选择排序: Y K 62#;
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package org.rut.util.algorithm.support; W!Os ci
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import org.rut.util.algorithm.SortUtil; 5L'@WB|{4u
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/** &rE l
* @author treeroot OTbjZ(
* @since 2006-2-2 j-\^
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* @version 1.0 Pn){xfqDl
*/ 2tTV5,(1
public class SelectionSort implements SortUtil.Sort { TEy.zzt
*v-xC5L1\
/* K0bmU(Xxp
* (non-Javadoc) "VhrsVT
* j;c^pLUP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #SOj4W
*/ xH.q
public void sort(int[] data) { 0hr)tYW,G
int temp; <i@jD
for (int i = 0; i < data.length; i++) { E.*OA y
int lowIndex = i; [UrS%]OSR
for (int j = data.length - 1; j > i; j--) { s%re>)=|
if (data[j] < data[lowIndex]) { |0Ug~jKU
lowIndex = j; z+`)|c4-
} I>\?t4t
} WUQh[A41
SortUtil.swap(data,i,lowIndex); 246!\zf
} J;9QDrl`
} B$eF@v"
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} o*S $j Cf?
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Shell排序: Tm,L?Jh
L PgI"6cP
package org.rut.util.algorithm.support; W-B[_
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import org.rut.util.algorithm.SortUtil; ^d=@RTyo/
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/** ooxzM `
* @author treeroot eNskuG|1
* @since 2006-2-2 {;~iq
* @version 1.0 pIjVJ9+j
*/ \d`Sz
*
public class ShellSort implements SortUtil.Sort{ ?Gu>!7
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/* (non-Javadoc) r\D8_S_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T`G"2|ISS
*/ S}I=i>QB
public void sort(int[] data) { JQ4>S<ttJ
for(int i=data.length/2;i>2;i/=2){ Z*B(L@H
for(int j=0;j insertSort(data,j,i); vG} oo
} kV<)>Gs
} %P6!vx:&^b
insertSort(data,0,1); |}Lgo"cTC
} ':dHYvP/UX
^!tI+F{n{
/** S?tLIi/
* @param data !d)i6W?
* @param j ^%^0x'"
* @param i ZJm^znpw6
*/ xb;mm9H
private void insertSort(int[] data, int start, int inc) { e@By@r&nql
int temp; I-hhHm<@
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ^a5>`W
} xUoY|$fI
} Puh&F< B
} #{1fb%L{i
_
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} /ep~/#Ia
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快速排序: ,oil}N(
/L^dHI]Q
package org.rut.util.algorithm.support; }5Uf`pM8
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import org.rut.util.algorithm.SortUtil; s9>!^MzBK
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/** }lVUa{ubf
* @author treeroot jyr#e
* @since 2006-2-2 vS#]RW&j
* @version 1.0 yL-L2
*/ t"fD"Xpj
public class QuickSort implements SortUtil.Sort{ ],|B4\b ;
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/* (non-Javadoc) \9^@,kfP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N%+M+zEJ
*/ r MlNp?{_
public void sort(int[] data) { wxxC&!
quickSort(data,0,data.length-1); 6npwu5!
} <5%We(3
private void quickSort(int[] data,int i,int j){ (WvA9s{/
int pivotIndex=(i+j)/2; #4>F%_
file://swap Ok!{2$P8U9
SortUtil.swap(data,pivotIndex,j); w0iEx1i
75f.^4/%
int k=partition(data,i-1,j,data[j]); =B1!em|
SortUtil.swap(data,k,j); 4y]*"(sQ;
if((k-i)>1) quickSort(data,i,k-1); M;R>]wP"V
if((j-k)>1) quickSort(data,k+1,j); HFOp4
l<+k[@Vox
} ~4 ab\hq
/** LJD"N#c
* @param data g=Lt2UIJ
* @param i b%(0AL
* @param j al/~
* @return :nI.Qa'"H
*/ \=)h6AG
private int partition(int[] data, int l, int r,int pivot) { S%2qB;uw
do{ mwxJ#
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); =RA6 p
SortUtil.swap(data,l,r); 5>
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} .kVga+la?
while(l SortUtil.swap(data,l,r); aO1cd_d6x_
return l; F+GQ l
} rk|6!kry
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} !wgj$5Rw.
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改进后的快速排序: j^gF~Wz^
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package org.rut.util.algorithm.support; 0:*$i(2
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import org.rut.util.algorithm.SortUtil; 'py
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/** kHO\#fF<
* @author treeroot =GF+hM/~
* @since 2006-2-2 f]Vz !hM~
* @version 1.0 J [1GP_
*/ bWqGypq4
public class ImprovedQuickSort implements SortUtil.Sort { *;Vq0a!
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private static int MAX_STACK_SIZE=4096; $jHL8r\e7
private static int THRESHOLD=10; *jYwcW"R{z
/* (non-Javadoc) f*Kipgp
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (/%}a`2#o
*/ , Le_PJY)
public void sort(int[] data) { YXvKDw'95
int[] stack=new int[MAX_STACK_SIZE]; /<mc~S7
"-a>Uj")%
int top=-1; L2 I/h`n"
int pivot; A#T;Gi
int pivotIndex,l,r; 6c2fqAF>i
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stack[++top]=0; p'H5yg3h
stack[++top]=data.length-1; j1BYSfX'
U}UIbJD*=
while(top>0){ ,yB-jk?
int j=stack[top--]; eN/Jb;W
int i=stack[top--]; hJ|z8Sy@1
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pivotIndex=(i+j)/2; wtZe\h
pivot=data[pivotIndex]; (vQShe\
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SortUtil.swap(data,pivotIndex,j); b&LhydaJ
1Ao"DxZHy7
file://partition f`?|A
l=i-1; * 6uiOtH
r=j; giI9-C
do{ L|c01
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ;N)qNiJY
SortUtil.swap(data,l,r); ;$W|FpR2
} [ P
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while(l SortUtil.swap(data,l,r); a+]@$8+
SortUtil.swap(data,l,j); hRME;/r]X
}@x0@sI9
if((l-i)>THRESHOLD){ o<x2,uT
stack[++top]=i; p}C3<[Nk
stack[++top]=l-1; RlpW)\{j?
} `/0FXb
8h
if((j-l)>THRESHOLD){ -1fT2e
stack[++top]=l+1; aa$+(
stack[++top]=j; HbCM{A9
} kg_TXB
Z{%h6""
} |`,%%p|T%
file://new InsertSort().sort(data); Zu5`-[mw
insertSort(data); Lw3Z^G
} 3uN;*f
/** T;I a;<mfE
* @param data CnJO]0Op3
*/ q'PA2a:
private void insertSort(int[] data) { w@hm>6j
int temp; La9dFe-uu{
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); H=B8'N
} X.g1
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} 0'a.Ypf
} {AJspLcG
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} si)920?E&
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归并排序: =T9QmEBm
$LKniK
package org.rut.util.algorithm.support; mhh8<BI
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import org.rut.util.algorithm.SortUtil; uQrD}%GI
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/** vX&Nh"0H&
* @author treeroot EFV'hMjS)
* @since 2006-2-2 ?FD^S~bz-
* @version 1.0 {]`O $S
*/ K
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public class MergeSort implements SortUtil.Sort{ NCBS=L:
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/* (non-Javadoc) *V5R[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TN(1oJ:
*/ W,}C*8{+
public void sort(int[] data) { EZao\,t
int[] temp=new int[data.length]; (J5E]NV
mergeSort(data,temp,0,data.length-1); *uNa(yd
} S$ dFz
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#O
private void mergeSort(int[] data,int[] temp,int l,int r){ YS%HZFY, "
int mid=(l+r)/2; _r&`[@m
if(l==r) return ; v 6Tz7
mergeSort(data,temp,l,mid); !\2Xr{f
mergeSort(data,temp,mid+1,r); tyNT1F{
for(int i=l;i<=r;i++){ 7@5}WNr
temp=data; 9tWu>keu
} iq=<LOx
int i1=l; L3,p8-d9Z
int i2=mid+1; Beqzw0
for(int cur=l;cur<=r;cur++){ Z_Hc":4i
if(i1==mid+1) YrFB~z.V
data[cur]=temp[i2++]; F:1w%#6av
else if(i2>r) Js ~_8
data[cur]=temp[i1++]; qf7lQovK
else if(temp[i1] data[cur]=temp[i1++]; wm!Y5
else BH0].-)[y!
data[cur]=temp[i2++]; YR^J7b\
} ma,H<0R
} ;5?$q
hxGZ}zq*S
} 6j+_)7.V
.9PPWY;H
改进后的归并排序: V`m'r+ Y
iO~3rWQ
package org.rut.util.algorithm.support; cE$7CSR
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import org.rut.util.algorithm.SortUtil; QGs\af
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/** 1!~=8FTv
* @author treeroot @))PpE`co8
* @since 2006-2-2 qlNK }
* @version 1.0 \x5b=~/
*/ B;@7
public class ImprovedMergeSort implements SortUtil.Sort { fczId"
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private static final int THRESHOLD = 10; IZoS2^:yw
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/* q ^Un,h64t
* (non-Javadoc) #41~`vq3
* 8XIG<Nc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &Rdg07e;>
*/ HN]roSt~
public void sort(int[] data) { Y92wL}
int[] temp=new int[data.length]; 4"U/T1&
mergeSort(data,temp,0,data.length-1); O4dJ> O
} =W$
f+
;shhgz$
private void mergeSort(int[] data, int[] temp, int l, int r) { UJ* D
int i, j, k; qwM71B!r
int mid = (l + r) / 2; 4}E|CD/pZ
if (l == r) 2+m%f"
return; B>hf|.GI
if ((mid - l) >= THRESHOLD) 50q(8F-N
mergeSort(data, temp, l, mid); Zn0e#n
else F !g>fIg
insertSort(data, l, mid - l + 1); o'O;69D]tX
if ((r - mid) > THRESHOLD) 7&;M"?m&
mergeSort(data, temp, mid + 1, r); Wa7-N4
else DybuLB$f
insertSort(data, mid + 1, r - mid); +}[M&D
~-ZquJ-
for (i = l; i <= mid; i++) { ?Dm={S6
temp = data; z3x/Y/X$S
} !tJQ75Hwv
for (j = 1; j <= r - mid; j++) { 7uQiP&v
temp[r - j + 1] = data[j + mid]; N@6+DHt
} 4c^WQ>[
int a = temp[l]; @)k/t>r(
int b = temp[r]; |mvY=t
%
for (i = l, j = r, k = l; k <= r; k++) { KcKdhqdN-
if (a < b) { W<|
M0S{
data[k] = temp[i++];
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a = temp; e!k1GTH^
} else { Uq/FH@E=
data[k] = temp[j--]; AtU%S9
b = temp[j]; :+#$=4
} q(xr5iuP_
} AUjZYp
} a4aM.o
Wg{ 9X#|
/** ]t0]fb[J
* @param data o?5m^S14[1
* @param l W'lejOiw
* @param i |z1er"zR)
*/ 89n\$7Ff9
private void insertSort(int[] data, int start, int len) { &Z'3n9zl
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ETZE.a
} ISa}Km>Q
} =`<9N%
} BPO)<bx_
} O?,Grn%'.
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堆排序: 4Ys\<\~d
CZZwBt$P
package org.rut.util.algorithm.support; wH]5VltUT1
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import org.rut.util.algorithm.SortUtil; R`
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N$ oQK(
/**
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* @author treeroot 0nr 5(4h
* @since 2006-2-2 JsP<etX
* @version 1.0 kB[l6`
*/ *RYok{w
public class HeapSort implements SortUtil.Sort{ /aV;EkyO,
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/* (non-Javadoc) 4yK{(!&i+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {<cL@W
*/ E4N/or
public void sort(int[] data) { <>v=jH|L
MaxHeap h=new MaxHeap(); q!;u4J
h.init(data); ~n=oPm$pR
for(int i=0;i h.remove(); 1S+lHG92I
System.arraycopy(h.queue,1,data,0,data.length); >\?RYy,s$
} P+L#p(K
J5!-<oJ/
private static class MaxHeap{ &M>o
-bd'sv
void init(int[] data){ EvYe1Y-
this.queue=new int[data.length+1]; p!o-+@ava
for(int i=0;i queue[++size]=data; \/s0p
fixUp(size); ZS<`.L6B3
} i&TWIl8
} =28ZSo^
H-,p.$3}
private int size=0; 5pU/X.lc
6bDizS}
private int[] queue; Hp>_:2O8s
"c.@4#/_
public int get() { h_HPmh5
return queue[1]; }
fa
} Q7#t#XM
!^'6&NR#K
public void remove() { R=2"5Hy=
SortUtil.swap(queue,1,size--); mclV"?
fixDown(1); 1'!D
} [sNvCE$\]
file://fixdown bkuJN%
private void fixDown(int k) { ;i?rd f
int j; R`J.vMT
while ((j = k << 1) <= size) { -^Qm_lN
if (j < size %26amp;%26amp; queue[j] j++; 8VtRRtl
if (queue[k]>queue[j]) file://不用交换 /|8rVYSs
break; Y P,>vzW
SortUtil.swap(queue,j,k); K$l@0r ~k
k = j; .}5qi;CA
} Gs\D`|3=
} (tyky&$!
private void fixUp(int k) { )5NWUuH 5
while (k > 1) { l"1*0jgBw
int j = k >> 1; g[*"LOw
if (queue[j]>queue[k]) lMl'+ yy
break; 8aJJ??o{
SortUtil.swap(queue,j,k); ^/VnRpU
k = j; 6L;]5)#
} _e/Bg~
} Xr:s-L
{V pk o
} mMvAA;
*\@RBJGF
} cF_`QRtO
NG`Y{QT6N
SortUtil: 9)8Cf%<(
sH>`eqY
package org.rut.util.algorithm; Qea"49R
dVk(R9 8
import org.rut.util.algorithm.support.BubbleSort; EDuH+/:n
import org.rut.util.algorithm.support.HeapSort; *VmX.
import org.rut.util.algorithm.support.ImprovedMergeSort; NMQG[py!f
import org.rut.util.algorithm.support.ImprovedQuickSort; VR .t
import org.rut.util.algorithm.support.InsertSort; 8rx|7
import org.rut.util.algorithm.support.MergeSort; 4l{$dtKbI
import org.rut.util.algorithm.support.QuickSort; R(*t1R\
import org.rut.util.algorithm.support.SelectionSort; 1Q!kk5jE
import org.rut.util.algorithm.support.ShellSort; rB{w4
,"KfZf;?
/** c1r+?q$f
* @author treeroot ~o/k?l
* @since 2006-2-2 SQhVdYU1'
* @version 1.0 7r50y>
*/ yj@k0TWT$
public class SortUtil { :<mJRsDf
public final static int INSERT = 1; F+GX{e7E\
public final static int BUBBLE = 2; /G|v.#2/g
public final static int SELECTION = 3; )[J@s=
public final static int SHELL = 4; )iM(
\=1ff
public final static int QUICK = 5; :p,|6~b$
public final static int IMPROVED_QUICK = 6; ya{`gjIlW
public final static int MERGE = 7; ] jY^*o[
public final static int IMPROVED_MERGE = 8; -8Hc M\b
public final static int HEAP = 9; z9g ++]rkJ
U[|5:qWs
public static void sort(int[] data) { [u$|/
sort(data, IMPROVED_QUICK); i39ZBs@
} <i4]qO(0u
private static String[] name={ /t<
&
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" IC5QH<.$C
}; x.Egl4b3
%)r:!R~R
private static Sort[] impl=new Sort[]{ J
<;xkT1x
new InsertSort(), iCA-X\E
new BubbleSort(), lVQE}gd%m
new SelectionSort(), (9oo8&GG
new ShellSort(), j7MUA#6$
new QuickSort(), !tt 8-Y)i
new ImprovedQuickSort(), Ws7fWK;
new MergeSort(), m [^)Q9o}
new ImprovedMergeSort(), .d}yQ#5z
new HeapSort() Ow*va\0
}; 5'eBeNxM
UWEegFq*
public static String toString(int algorithm){ U65l o[
return name[algorithm-1];
?ueL'4Mm
} sT"ICooc
TIZ2'q5wg
public static void sort(int[] data, int algorithm) { 4r`I)
impl[algorithm-1].sort(data); <8;~4"'a
} 38T]qz[Sn
l`N4P
public static interface Sort {
;}?ZH4.S
public void sort(int[] data); YPGzI]\
} B1J,4
yf0v,]v[
public static void swap(int[] data, int i, int j) { pi~5}bF!a
int temp = data; 05k'TqT{c
data = data[j]; }nX0h6+1
data[j] = temp; ;Z"MO@9:
} gm2|`^Xq$
} 7Y[ q)lv