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。 +!F+mV9
插入排序: ~w,c6Z
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package org.rut.util.algorithm.support; )zK6>-KWA
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import org.rut.util.algorithm.SortUtil; A7c*qBt
/** CwL8-z0 Jn
* @author treeroot ulAOQGZ
* @since 2006-2-2 6 *GR_sMm
* @version 1.0 Ks>l=5~v|
*/ S5(VdMd"^
public class InsertSort implements SortUtil.Sort{ iKVJ
c=C
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/* (non-Javadoc) n]Z() "D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |vUjoa'.7E
*/ v&]k8Hc-
public void sort(int[] data) { ~5@bWJ
int temp; O`rKxP
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _Xe"+
} mFa%d8Y
} !C3ozZ<
} W-8U~*/
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冒泡排序: )a=58r07
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package org.rut.util.algorithm.support; tSf$`4
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import org.rut.util.algorithm.SortUtil; TaqqEL
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/** _t7}ny[
* @author treeroot [~v1
* @since 2006-2-2 9:v0gE+.
* @version 1.0 Q8GI;`Rb
*/ N7l`-y
public class BubbleSort implements SortUtil.Sort{ <uKd)l
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/* (non-Javadoc) W3E7y?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h|Ah\P?o
*/ D9
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public void sort(int[] data) { \\d!z-NOk?
int temp; 5z=.Z\M`8
for(int i=0;i for(int j=data.length-1;j>i;j--){ :+?w>
if(data[j] SortUtil.swap(data,j,j-1); NQu.%=
} (aUdPo8H^
} d [f,Nu'
} aJ3.D
} }c?W|#y`.o
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} C>=[fAr mO
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选择排序: E},^,65
h( V:-D
package org.rut.util.algorithm.support; 3I.0jA#T&/
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import org.rut.util.algorithm.SortUtil; 'L5ih|$>
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/** BTAt9Z8qK
* @author treeroot 3vC"Q!J&
* @since 2006-2-2 4 >`2vb
* @version 1.0 /73ANQ"
*/ C
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public class SelectionSort implements SortUtil.Sort { 7)zF8V
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/* x;@wtd*QB
* (non-Javadoc) Ej#pM.
* |?\J,h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'i;/?'!W6
*/ De^Uc
public void sort(int[] data) { #O,;3S
int temp; 4m"6$
for (int i = 0; i < data.length; i++) { 'wT !X[jF
int lowIndex = i; KSgYf;
for (int j = data.length - 1; j > i; j--) { (`)ZR%i
if (data[j] < data[lowIndex]) { S-2@:E
lowIndex = j; vhE^jS<Tg
} r-8fvBZ5
} )[np{eF.k
SortUtil.swap(data,i,lowIndex); {7Qj+e^
} =~P)7D6
} rInZd`\
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5@~
} Hpj7EaMZ_
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Shell排序: w^Atd|~gi
ESyb34T`
package org.rut.util.algorithm.support; bB+ 4
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import org.rut.util.algorithm.SortUtil; qx f8f
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/** r>_40+|&
* @author treeroot ZGsI\3S
* @since 2006-2-2 y"T(Unvc
* @version 1.0 &\m=|S
*/ ,p)Qu%'
public class ShellSort implements SortUtil.Sort{ 12o6KVV^x
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/* (non-Javadoc) 4d63+iM+}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]9lR:V
sw
*/ oXFo
public void sort(int[] data) { e pGC
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for(int i=data.length/2;i>2;i/=2){ IcJQC
for(int j=0;j insertSort(data,j,i); PdqyNn=
} ZE:!>VXa87
} QruclNW{Bv
insertSort(data,0,1); /I48jO^2
} {JlSfJw!
_@@.VmZL
/** sIzy/W0iV
* @param data M{4U%lk
* @param j {v,NNKQ4x
* @param i 3Q!)bMv \
*/ 3XSfXS{lwP
private void insertSort(int[] data, int start, int inc) { oYAHyCkVq
int temp; %Xe 74C"
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); `
#; "
} &j?+%Y1n@
} S~hoAl"xb/
} l}_6_g>6
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} bc]SY =
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快速排序: C+%6N@
PrhGp
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package org.rut.util.algorithm.support; _^@ >I8ix
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import org.rut.util.algorithm.SortUtil; LhCwZ1
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/** CLgfNrW~
* @author treeroot ~v6]6+
* @since 2006-2-2 @iBaJ"*,
* @version 1.0 x(7Q5Uk\
*/ 821;; ]H
public class QuickSort implements SortUtil.Sort{ !,9;AMO
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/* (non-Javadoc) ST1c`0e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 61Wh %8-
*/ N
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public void sort(int[] data) { 1O2jvt7M
quickSort(data,0,data.length-1); !g4u<7
} ymb{rKkN3
private void quickSort(int[] data,int i,int j){ m[qW)N:w
int pivotIndex=(i+j)/2; x5R|,bY
file://swap _sK{qQxvM=
SortUtil.swap(data,pivotIndex,j); $1Qcz,4B|
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int k=partition(data,i-1,j,data[j]); zuS4N?t`p
SortUtil.swap(data,k,j); uc
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if((k-i)>1) quickSort(data,i,k-1); B &e'n<
if((j-k)>1) quickSort(data,k+1,j); *~kHH
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} O,Ej m<nt
/** s"~3.J
* @param data |3G;Rh9w,
* @param i vg8Yc
* @param j }"M5"?
* @return k]rc -c-
*/ [Om,Q<
private int partition(int[] data, int l, int r,int pivot) { a5?Yh<cJ
do{ a=
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); \Vx_$E
SortUtil.swap(data,l,r); 1ZY~qP+n+
}
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while(l SortUtil.swap(data,l,r); ?N=`}}Ky-
return l; ;r}yeISf
} sBa&]9>m
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} .l$U:d
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改进后的快速排序: sAS[wcOQ
o>HU4O}
package org.rut.util.algorithm.support; \V
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import org.rut.util.algorithm.SortUtil; L&0aS:
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/** S]Ye`
* @author treeroot 6&o?#l;|
* @since 2006-2-2 uyvjo)T
* @version 1.0 D2I|Z
*/ 0UhJ
I
public class ImprovedQuickSort implements SortUtil.Sort { 9V|)3GF
U(2=fKK;
private static int MAX_STACK_SIZE=4096; o ~M=o:^nH
private static int THRESHOLD=10; sh*/wM
/* (non-Javadoc) kS4YxtvB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 40G'3HOp
*/ x/ix%!8J
public void sort(int[] data) { .Nk5W%7]=
int[] stack=new int[MAX_STACK_SIZE]; 1Gy
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int top=-1; /[A#iTe
int pivot; K[S)e!\.
int pivotIndex,l,r; 9.B gsV .
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stack[++top]=0; kK:U+`+
stack[++top]=data.length-1; e~geBlLar
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while(top>0){ 5?m4B:W
int j=stack[top--]; EHK+qrym
int i=stack[top--]; :LCyxLI
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pivotIndex=(i+j)/2; $HCgawQ
pivot=data[pivotIndex]; *U-:2uf
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SortUtil.swap(data,pivotIndex,j); \h?6/@3ob
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file://partition 0\V)DV.i
l=i-1; e,MgR \F}
r=j; _9'hmej
do{ qWJHb Dd
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); V''fmWo7
SortUtil.swap(data,l,r); / ;+Mz*
} U4qk<!
while(l SortUtil.swap(data,l,r); Oh%p1$H
SortUtil.swap(data,l,j); b!r%4Ah
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if((l-i)>THRESHOLD){ [Sj"gLj
stack[++top]=i; A4(k<<xjE
stack[++top]=l-1; Eihy|p
} }<zbx*!
if((j-l)>THRESHOLD){ F\^\,hy
stack[++top]=l+1; +ViL"
stack[++top]=j; Eu<f
} - ,?LS w
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} Cbpz Yv32
file://new InsertSort().sort(data); Qq'e#nI@
insertSort(data); GWLdz0`2_
} =~5N/!
/** 5H1N]v+
* @param data jib pZ)
*/ &xZSM,
private void insertSort(int[] data) { )+ 'r-AF*
int temp; 5~ZzQG
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); u%lUi2P2E
} 5A<}*T
} 5nTcd@lX
} CM%;/[WBxy
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} =iH9=}aBFC
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归并排序: Gpi_p
R+_!FnOJ
package org.rut.util.algorithm.support; }Q@~_3,UJ
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import org.rut.util.algorithm.SortUtil; 'oH3|
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/** Bl^BtE?-b
* @author treeroot >; tE.CJH
* @since 2006-2-2 yPY{ZADkQ
* @version 1.0 HA7%8R*.2i
*/ O /:FY1
public class MergeSort implements SortUtil.Sort{ \w"~DuA
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/* (non-Javadoc) 6kMkFZ}+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wX_~H*m?
*/ B?yjU[/R
public void sort(int[] data) { zG8g}FrzG;
int[] temp=new int[data.length]; NqGSoOjIO2
mergeSort(data,temp,0,data.length-1); O&&_)
} ~<~
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private void mergeSort(int[] data,int[] temp,int l,int r){ z&Aya*0v`
int mid=(l+r)/2; TI\xCIH
if(l==r) return ; n>7aZ1Qa
mergeSort(data,temp,l,mid); /h{Rf,H
mergeSort(data,temp,mid+1,r); wOCAGEg
for(int i=l;i<=r;i++){ @rAV;D%
temp=data; Yi)s=Q :
} ||.Hv[
]V*
int i1=l; Iqn
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int i2=mid+1; 7!h>
< sx
for(int cur=l;cur<=r;cur++){ TIt\
if(i1==mid+1) HTz`$9
data[cur]=temp[i2++]; ,,+4d :8$
else if(i2>r) (CgvI*O
data[cur]=temp[i1++]; RgW#z-PZF
else if(temp[i1] data[cur]=temp[i1++]; 8ZqLGa]
else 3Zl:rYD?
data[cur]=temp[i2++]; I8`$a
} n\V7^N
} /nu z_y\J
,hT.Ok={36
} k`A39ln7wu
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改进后的归并排序: f8aY6o"i
f$n5$hJlQ
package org.rut.util.algorithm.support; Pqw<nyC.
^6R(K'E}
import org.rut.util.algorithm.SortUtil; Ir5|H|b<
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/** awvP;F?q|
* @author treeroot @6UZC-M0
* @since 2006-2-2 \v5;t9uBZ
* @version 1.0 c#"t.j<E}
*/ ^]'_Qbi]}
public class ImprovedMergeSort implements SortUtil.Sort { NdSuOkwwt
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private static final int THRESHOLD = 10; XZM@Rys
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/* y1T(R#
* (non-Javadoc) 5ya^k{`+ZO
* vp.?$(L^@/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a h_>:x
*/ 5%e+@X;j
public void sort(int[] data) { -W<1BJE
int[] temp=new int[data.length]; Gyy4zK
mergeSort(data,temp,0,data.length-1); EwU)(UK
} g}W|q"l?i
j7Ts&;`[*
private void mergeSort(int[] data, int[] temp, int l, int r) { rUmP_
int i, j, k; FMI1[|:;
int mid = (l + r) / 2; \!BVf@>p%
if (l == r) ..+#~3es#y
return; Rz|@BxB>n
if ((mid - l) >= THRESHOLD) gGUKB2)
mergeSort(data, temp, l, mid); u:2Ll[ eo
else ~6@`;s`[Y
insertSort(data, l, mid - l + 1); |*UB/8C^/!
if ((r - mid) > THRESHOLD) u4w!SD
mergeSort(data, temp, mid + 1, r); z\A
),;
else mfaU_Vo&
insertSort(data, mid + 1, r - mid); uf9&o#
QDV+(
for (i = l; i <= mid; i++) { {?IbbT
temp = data; F.5fasdX'
} h]k$K
for (j = 1; j <= r - mid; j++) { h_S>Q
temp[r - j + 1] = data[j + mid]; L YF|
} P/|1,Sk
int a = temp[l]; c$71~|-[
int b = temp[r]; K)~a H
for (i = l, j = r, k = l; k <= r; k++) { 5TB6QLPEwY
if (a < b) { 0kOwA%m
data[k] = temp[i++]; ow{. iv\,u
a = temp; -X~|jF
} else { u;-fG9xs
data[k] = temp[j--]; xlu4
b = temp[j]; n+hL/aQ+
} \|HNFx T`
} .6azUD4
} <?5|(Q"@:
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/** SeDk/}/~e
* @param data ;%^=V#
* @param l ->{-yh]jv
* @param i O.ce= E
*/ vQK/xg
private void insertSort(int[] data, int start, int len) { bIyg7X)/
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); \rzMgR$/rj
} uHSnZ"#
} qx[c0X!
} 6X%g-aTs
} =(D"(OsQ/
h )5S4)
堆排序: @;P ;iI
YnU)f@b#
package org.rut.util.algorithm.support; T!KwRxJ23
HdI)Z<Krp
import org.rut.util.algorithm.SortUtil; 9%iQ~
N\ !
/** /}m*|cG/
* @author treeroot _7<{+Zzm
* @since 2006-2-2 jxkjPf?
* @version 1.0 s{yw1:
*/ o5?Y
public class HeapSort implements SortUtil.Sort{ [%N?D#;
&tAYF_}
/* (non-Javadoc) -R:_o1"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cS9jGD92
*/ ;ISnI
public void sort(int[] data) { T TN!$?G3
MaxHeap h=new MaxHeap(); 9"]#.A^Q*
h.init(data); ucx02^uA
for(int i=0;i h.remove(); }}QR'
System.arraycopy(h.queue,1,data,0,data.length); 3>@VPMi
} l9&k!kF`
*??lwvJp
private static class MaxHeap{ * /n8T]s
([dd)QU
void init(int[] data){ V)>?[
this.queue=new int[data.length+1]; X&?s:A
for(int i=0;i queue[++size]=data; n%7?G=_kj
fixUp(size); lnyfAq}w
} Y-a
} LsuOmB| ^
(jDz[b#OPz
private int size=0; }r5yAE
MkPQ@so
private int[] queue; KddCR&
PVBz~rG
public int get() { ~E7IU<B
return queue[1]; =,#--1R7g
} d/&>
`[i
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public void remove() { \}?X5X>
SortUtil.swap(queue,1,size--); $0E+8xE
fixDown(1); }Pg}"fb^
} m"iA#3l*=
file://fixdown :]@c%~~!&
private void fixDown(int k) { F^NK"<tW
int j; <]M.K3>
while ((j = k << 1) <= size) { Wjw,LwB
if (j < size %26amp;%26amp; queue[j] j++; aIV
/ c
if (queue[k]>queue[j]) file://不用交换 - |g"q|
break; '%QCNO/
SortUtil.swap(queue,j,k); vyIH<@@p7
k = j; E>|X'I?r^
} *(F`NJ 3
} WYUDD_m
private void fixUp(int k) { mOsp~|d
while (k > 1) { =Nxkr0])!
int j = k >> 1; WQ.0} n}d
if (queue[j]>queue[k]) 1*TbgxS~W
break; WK>|IgK
SortUtil.swap(queue,j,k); ^Fco'nlM
k = j; 0- )K_JV
} Gs,:$Im
} -V|"T+U
%'=*utOxy
} zXn-E
o3 fc -
} "s(~k
:pqUUZ6x&
SortUtil: ,KW
Q
6
9qB0F_xl
package org.rut.util.algorithm; q*l4h u%3
S%i^`_=Q
import org.rut.util.algorithm.support.BubbleSort; ZNX38<3h
import org.rut.util.algorithm.support.HeapSort; l4oyF|oJTH
import org.rut.util.algorithm.support.ImprovedMergeSort; Icnhet4
import org.rut.util.algorithm.support.ImprovedQuickSort; l}))vf=i
import org.rut.util.algorithm.support.InsertSort; 27e!KG[&
import org.rut.util.algorithm.support.MergeSort; YB5"i9T2
import org.rut.util.algorithm.support.QuickSort; g"evnp
import org.rut.util.algorithm.support.SelectionSort; -)`_w^Ox
import org.rut.util.algorithm.support.ShellSort; 5QMra5N k
%L+q:naZe
/** L=4+rshl!_
* @author treeroot !mmMAsd,
* @since 2006-2-2 }'$PYAf6
* @version 1.0 KhHFJo[8sf
*/ $')C&
public class SortUtil { y2G Us&09
public final static int INSERT = 1; vjuFVJwL
public final static int BUBBLE = 2; 50^ux:Uv+N
public final static int SELECTION = 3; |`5IP8Z
public final static int SHELL = 4; ]dpL
PR
public final static int QUICK = 5; ;Y?MbD
public final static int IMPROVED_QUICK = 6; hJ@vlMW
public final static int MERGE = 7; a[-!X7,IU
public final static int IMPROVED_MERGE = 8; 69g{oo
public final static int HEAP = 9; `t~jHe4!Y
2s\ClT
public static void sort(int[] data) { f2i:I1 p("
sort(data, IMPROVED_QUICK); 08`|C)Z!
} #Vq9 =Q2
private static String[] name={ BNu >/zGpB
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" E#B-JLMGl
}; ?l0eU@rwQ
E7:xPNU
private static Sort[] impl=new Sort[]{ =:-fK-d
new InsertSort(),
)(G9[DG
new BubbleSort(), K3yQ0k
|
new SelectionSort(), !GqFX+!Ju
new ShellSort(), ,@`?I6nKy
new QuickSort(), g'(bk@<BP
new ImprovedQuickSort(), .-KI,IU
new MergeSort(), P!eo#b^S
new ImprovedMergeSort(),
54+(o6E<
new HeapSort() *GT=U(d
}; 8h=t%zMSb
f!9i6
public static String toString(int algorithm){ 4<y
return name[algorithm-1]; 8QrpNSj4
} j[G`p^ul
}aZuCe_
public static void sort(int[] data, int algorithm) { >HP
`B2Q
H
impl[algorithm-1].sort(data); %71i&T F
} \i%'M%
N~v6K}`}
public static interface Sort { wVBKVb9N
public void sort(int[] data); i(}PrA
} pHV^Kv#
r;#"j%z
public static void swap(int[] data, int i, int j) { !6!)H8rX
int temp = data; 6Y9N=\`
data = data[j]; Kxr@!m"
data[j] = temp; x'GB#svi
} !+GYu;_
} T8XrmR&?PX