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。 tMl y*E
插入排序: x9l7|G/$
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package org.rut.util.algorithm.support; !^arWH[od
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import org.rut.util.algorithm.SortUtil; a#p+.)Wm
/** -`L`kL<
* @author treeroot 't<iB&wgF
* @since 2006-2-2 qTuR[(
* @version 1.0 <pX?x3-'
*/ qk& F>6<9*
public class InsertSort implements SortUtil.Sort{ -E7mt`:d
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/* (non-Javadoc) (5$Ge$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A?YYR%o%'
*/ B}"R@;N
public void sort(int[] data) { T<]{:\*n
int temp; %1#\LRA(
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); YmljHQP
} Gk:fw#R
} ";/]rwHa)
} MdBmq/[O
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} 0,hs%x>v
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冒泡排序: ;.h /D4
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package org.rut.util.algorithm.support; C%4ed#
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import org.rut.util.algorithm.SortUtil; Cd'D
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/** 7C|AiSH
* @author treeroot Y}[<KK}_
* @since 2006-2-2 h8V*$
* @version 1.0 2Bt/co-~4
*/ u7e$Mq
public class BubbleSort implements SortUtil.Sort{ 9B~&d(Bm
#Y= A#Yz,{
/* (non-Javadoc) ;f%@s1u
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &N.pW=%,N
*/ ~~yng-3)1
public void sort(int[] data) { QFnuu-82"
int temp; #IH9S5B [
for(int i=0;i for(int j=data.length-1;j>i;j--){ x(c+~4:_M
if(data[j] SortUtil.swap(data,j,j-1); JpXv+V
} WB:0}b0Gu
} ?;tPqOs&
} rQv5uoD
} hk
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Mmz;
uy_
} %Z6Q/+#fn
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选择排序: !w7/G
7 2$S'O%,0
package org.rut.util.algorithm.support; 8cO?VH,nk
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import org.rut.util.algorithm.SortUtil; -#I]/7^
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/** ue8 @=}
* @author treeroot -O &>HA
* @since 2006-2-2 +kWWx#L#
* @version 1.0 /J^dzvH
*/ xR-;,=J
public class SelectionSort implements SortUtil.Sort { +~=a$xA[C
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/* )i /w:g>
* (non-Javadoc) Sk
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* pwMA,X/{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (pH)QG
*/ DWtITO>
public void sort(int[] data) { Ep-bx&w+
int temp; <IWg]AJT:
for (int i = 0; i < data.length; i++) { qBF|' .$^
int lowIndex = i; QE/kR!r
for (int j = data.length - 1; j > i; j--) { IS"[<
if (data[j] < data[lowIndex]) { >4@w|7lS
lowIndex = j; a)lCp
} #i~P])%gNP
} hXFT(J=
SortUtil.swap(data,i,lowIndex); V|A)f@ Fs
} Gt{%O>P8t
} ~5Fx[q
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} PM!JjMeQh
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Shell排序: V9/2y9u
ku/vV+&O
package org.rut.util.algorithm.support; 0]f/5jvLj
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import org.rut.util.algorithm.SortUtil; w3i74C&0
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/** Wlg 1t~1=
* @author treeroot E4=D$hfq`
* @since 2006-2-2 4-HBXG9#/
* @version 1.0 ){mqo%{SO
*/ "%Ief4
public class ShellSort implements SortUtil.Sort{ 'uzHI@i
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/* (non-Javadoc) KtJc9dnX
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6W:]'L4!
*/ R`o
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public void sort(int[] data) { +P+h$gQ
for(int i=data.length/2;i>2;i/=2){ ^7Z?}tgU
for(int j=0;j insertSort(data,j,i); >;"%Db
} f/z]kfgw
} daCkjDGl\
insertSort(data,0,1); 'I}wN5`
} uzb|yV'B
]N\D^`iQ
/** A.yIl`'UP#
* @param data 1fV)tvU$
* @param j uMm`j?Y23q
* @param i :3s^, g
*/ }s"].Xm^2
private void insertSort(int[] data, int start, int inc) { yzl}!& E
int temp; j"Ew)6j
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); FQ0 ;%Z
} InRRcn(
} *T}c{/
} g/FT6+&T.
} gwfe
H
} zgGJ<=G.
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快速排序: 4Wvefq"
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package org.rut.util.algorithm.support; f`rI]v|@
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import org.rut.util.algorithm.SortUtil; `H9+]TWj<
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/** _V8;dv8
* @author treeroot #RyTa
/L
* @since 2006-2-2 ang~_Ec.
* @version 1.0 ~PAI0+*"q
*/ )p#L "r^)
public class QuickSort implements SortUtil.Sort{ {wk#n.c
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/* (non-Javadoc) 9D,!]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r}(m jC"o
*/ xh#pw2v7V
public void sort(int[] data) {
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quickSort(data,0,data.length-1); l+wfP76w
} {,(iL8,^
private void quickSort(int[] data,int i,int j){ Yi[MoYe/K
int pivotIndex=(i+j)/2; TI2K_'
file://swap k}qCkm27
SortUtil.swap(data,pivotIndex,j); =HV${+K=~
fo~*Bp()-E
int k=partition(data,i-1,j,data[j]); 'R-g:X\{
SortUtil.swap(data,k,j); c/j+aj0.v
if((k-i)>1) quickSort(data,i,k-1); Nq6;
z)$
if((j-k)>1) quickSort(data,k+1,j); K W
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} W|E %
/** O'@[f{
* @param data [}l 90 lP
* @param i H4T~Kv
* @param j n0EW
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* @return (c"!&&S^ =
*/ x&+&)d
private int partition(int[] data, int l, int r,int pivot) { ]O~$|Wk
do{ oIj-Y`92!
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); xpu2RE
SortUtil.swap(data,l,r); <Ter\o5%
} '{.8tT?tJ
while(l SortUtil.swap(data,l,r); je 3Qq1
return l; > sQ&5-i
} -II03 S1
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} ,Jn` qvmi
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改进后的快速排序: ZSD7%gE<D
0jPUDkH*
package org.rut.util.algorithm.support; -okq=9
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import org.rut.util.algorithm.SortUtil; %""h:1/S
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/** iE_[]Vgc
* @author treeroot ;KEie@Ry
* @since 2006-2-2 ]ZW-`U MO
* @version 1.0 &"27U
*/ p&)d]oV>
public class ImprovedQuickSort implements SortUtil.Sort { T{-gbo`Yji
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private static int MAX_STACK_SIZE=4096; \IudS{
.?;
private static int THRESHOLD=10; qHo Hh
/* (non-Javadoc) Q00v(6V46
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &@BAVc z
*/ 02NVdpo[wU
public void sort(int[] data) { 2m*/$GZ
int[] stack=new int[MAX_STACK_SIZE]; x'OP0],#
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int top=-1; 0M&~;`W}
int pivot; #T{)y
int pivotIndex,l,r; /(u? k%Q
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stack[++top]=0; ~F-lO1
stack[++top]=data.length-1; 6X?:mn'%QF
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while(top>0){ `_i|\}tl
int j=stack[top--]; ct
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int i=stack[top--]; SyT{k\[
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pivotIndex=(i+j)/2; .}Ys+d1b9c
pivot=data[pivotIndex]; \7#w@3*
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SortUtil.swap(data,pivotIndex,j); qbCU&G|)
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file://partition cR,'aX
l=i-1; j8PeO&n>
r=j; +{m+aHk
do{ u2`j\
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while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); k'PvQl"I
SortUtil.swap(data,l,r); UIg?3J}R
} a\oz-`ESa
while(l SortUtil.swap(data,l,r); R#8cOmZ
SortUtil.swap(data,l,j); #3{}(T7
*tk=D sRW
if((l-i)>THRESHOLD){ \.p;
4V&
stack[++top]=i; .3V L
stack[++top]=l-1; gyV`]uqG
} &5bIM>)v
if((j-l)>THRESHOLD){ !<VP[%2L~
stack[++top]=l+1; `kv7Rr}Q
stack[++top]=j; GO@<?>K
} v&7<f$5
i+< v7?:`#
} n9k
file://new InsertSort().sort(data); ,O:p`"3`0=
insertSort(data); =h
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} WS(m#WFQr
/** v.vkQQ0[9
* @param data I>vU;xV\m
*/ ?m7i7Dz
private void insertSort(int[] data) { Z(tO]tQE
int temp; r&+C%
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ,{msJyacmR
} ?"<m {,yQI
} z8%qCq
} 9 BU#THDm
jq8TfJ|
} S?a4IK
9=/4}!.
归并排序: 2J$vX(
V?)V2>]
package org.rut.util.algorithm.support; :[f[-F
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import org.rut.util.algorithm.SortUtil; ips)-1
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/** B B'qbX3xK
* @author treeroot 5 $$Cav
* @since 2006-2-2 fkX86
* @version 1.0 ht>/7.p]
*/ n_ ?+QF
public class MergeSort implements SortUtil.Sort{ ?MmQ'1N
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/* (non-Javadoc) M.Tp)ig\#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k{b|w')
*/ *<SXzJ(
public void sort(int[] data) { !TY0;is
int[] temp=new int[data.length]; :"Tkl$@,
mergeSort(data,temp,0,data.length-1); 1|ddG010
} f?GoBh<
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private void mergeSort(int[] data,int[] temp,int l,int r){ _LfbEv<,T
int mid=(l+r)/2; On!+7is'
if(l==r) return ; qxHn+O!h
mergeSort(data,temp,l,mid); ][V`ym-e
mergeSort(data,temp,mid+1,r); @icw:68
for(int i=l;i<=r;i++){ )1@%!fr
temp=data; BI*0JKQu
} ^J^FGo|M
int i1=l; ;~[}B v
int i2=mid+1; Pec Zuv
for(int cur=l;cur<=r;cur++){ @]}/vsI m
if(i1==mid+1) /0|1xHs
data[cur]=temp[i2++]; sMUpkU-
else if(i2>r) K]M@t=
data[cur]=temp[i1++]; AS~!YR
else if(temp[i1] data[cur]=temp[i1++]; _nxu8g]
else xt"-Jmox
data[cur]=temp[i2++]; i1KjQ1\a +
} ggM~Chr
} w,R6:*p5
!T
,=kh
} ,C0y3pL
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改进后的归并排序: Xc"
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`r3 klL,W'
package org.rut.util.algorithm.support; R~[~(`/S
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import org.rut.util.algorithm.SortUtil; ?P>4H0@I+
d^!3&y&
/** ru`U/6n
* @author treeroot 83'+q((<
* @since 2006-2-2 ?YV#
K
* @version 1.0 YPY,gR
*/ 7w8UnPuM
public class ImprovedMergeSort implements SortUtil.Sort { n$7*L9)(C
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private static final int THRESHOLD = 10; jA^Dk$
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/* Gx}`_[-
* (non-Javadoc) xWK/uE (
* 9Hb|$/FD
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @)[8m8paV
*/ S+wT}_BQ
public void sort(int[] data) { 2*#i/SE_
int[] temp=new int[data.length]; c$BH`" <*
mergeSort(data,temp,0,data.length-1); 1=,2i)
} Jmg9|g!f
2 @T~VRy
private void mergeSort(int[] data, int[] temp, int l, int r) { )8 aHj4x
int i, j, k; c|aX4 =Z
int mid = (l + r) / 2; $o\z4_I
if (l == r) birc&<
return; P?n4B \!
if ((mid - l) >= THRESHOLD) J=: \b
mergeSort(data, temp, l, mid); :g|NE\z`)/
else `#8k Jt
insertSort(data, l, mid - l + 1); :&'jh/vRN
if ((r - mid) > THRESHOLD) 3T,[
mergeSort(data, temp, mid + 1, r); dPf7o
else &nI>`Q'
insertSort(data, mid + 1, r - mid); ^?sP[;8S!
+r;t]
for (i = l; i <= mid; i++) { rKFnivGT
temp = data; g)TZ/,NQ{
} [{GN#W|AGP
for (j = 1; j <= r - mid; j++) { pnz: <V"Y(
temp[r - j + 1] = data[j + mid]; i4h`jFS
} #>,E"-]f
int a = temp[l]; 5~jz| T}s
int b = temp[r]; \)o.Y
zAo@
for (i = l, j = r, k = l; k <= r; k++) { IpSWg
if (a < b) { $0 vT_
data[k] = temp[i++]; @n.n[zb\|
a = temp; {I$iD
} else { i$6rnS&C
data[k] = temp[j--]; X;UEq]kcmn
b = temp[j]; +lVA$]d
} _Y]Oloo('
} _kMHF
} W SxoGly
%*npLDi
/** ITqAy1m@C
* @param data dhnX\/
* @param l tD}-&"REP
* @param i E0fMFG^P
*/ w{xa@Q]t-
private void insertSort(int[] data, int start, int len) { Xa#.GrH6
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 'Q :%s
} JA9NTu(
} ^0}wmxDq
} @{_X@Wv4iV
} \#) YS
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堆排序: N wNxO
_a& Z$2O
package org.rut.util.algorithm.support; _D?/$D7u#%
pL;e(lM
import org.rut.util.algorithm.SortUtil; r2'K'?T3
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/** HK<S|6B7V
* @author treeroot ^AJ
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* @since 2006-2-2 /j$pV
* @version 1.0 =>3,]hnep
*/ KA{QGaZ/
public class HeapSort implements SortUtil.Sort{ wXqwb|2
I ZLCwaW
/* (non-Javadoc) tKLeq(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |;)_-=L0P
*/ X o9vE3
public void sort(int[] data) { uE (5q!/
MaxHeap h=new MaxHeap(); 5WRqeSGh
h.init(data); C6a-
for(int i=0;i h.remove(); ',WJ'g
System.arraycopy(h.queue,1,data,0,data.length); .B2e$`s$
} {fl[BX]kZ
1D8S}=5&
private static class MaxHeap{ G9QvIXRi
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void init(int[] data){ ps,Kj3^T<
this.queue=new int[data.length+1]; L&:A59)1k
for(int i=0;i queue[++size]=data; <b_K*]Z
fixUp(size); 7]5~ml3:
} K3tW Y
4-
} # .(f7~
Rc4=zimr+
private int size=0; C\BKdx5;
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private int[] queue; mSu$1m8
I/A%3i=H
public int get() { <_eEpG}9
return queue[1];
ip{b*@K
} ebCS4&c
"oZ_1qi<
public void remove() { o(l%k},a
SortUtil.swap(queue,1,size--); []
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+
fixDown(1);
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} }u0&> k|y
file://fixdown ~.U\Y
private void fixDown(int k) { G^K;+& T
int j; P2s\f;Dwr
while ((j = k << 1) <= size) { &K[~Ab_
if (j < size %26amp;%26amp; queue[j] j++; iRG6Cw2
if (queue[k]>queue[j]) file://不用交换 AOcUr)
break; 5-({z%:P
SortUtil.swap(queue,j,k); '3Fb[md54
k = j; ..'"kX:5
} 3&M0@/
} #FRm<9/j
private void fixUp(int k) { KY%qzq,n
while (k > 1) { 0Db=/sJ>
int j = k >> 1; gPd,
if (queue[j]>queue[k]) E1Q#@*rX>
break; Y@MxKK uj
SortUtil.swap(queue,j,k); UEYJd&n0CB
k = j; })(robBkA
} p*@t$0i
} k_?OEkgUh
yn(bW\
} 7u:kR;wk
*u,&?fCl
} M80O;0N%A
PX/^*
SortUtil: y[S9b(:+
~Ij/vyB_
package org.rut.util.algorithm; ]EDCs?,
b~YIaD[Z
import org.rut.util.algorithm.support.BubbleSort; u%"5<ll
import org.rut.util.algorithm.support.HeapSort; u:l<NWF^
import org.rut.util.algorithm.support.ImprovedMergeSort; ^x^(Rk}|
import org.rut.util.algorithm.support.ImprovedQuickSort; 4,Uqcw?!F'
import org.rut.util.algorithm.support.InsertSort; #RSUChe7w
import org.rut.util.algorithm.support.MergeSort; Vl<7>
import org.rut.util.algorithm.support.QuickSort; o:4#AkS
import org.rut.util.algorithm.support.SelectionSort; 8.IenU9
import org.rut.util.algorithm.support.ShellSort; q3K}2g
>$r o\/
/** 2!b##`UjA7
* @author treeroot oY; C[X
* @since 2006-2-2 m$pRA0s2`
* @version 1.0 QJjk#*?,|
*/ g\IwV+iDf
public class SortUtil { f3>DmH#
public final static int INSERT = 1; -m
;n}ECg
public final static int BUBBLE = 2; a=9QwEZ
public final static int SELECTION = 3; vO/ 3bu}
public final static int SHELL = 4; V 7ZGT
public final static int QUICK = 5; ?FR-aXx
public final static int IMPROVED_QUICK = 6; D$NpyF.87
public final static int MERGE = 7; 9 v8^uPA
public final static int IMPROVED_MERGE = 8; YGc:84S
public final static int HEAP = 9; HGd.meQ
uq54+zC
public static void sort(int[] data) { ;mwnAO
sort(data, IMPROVED_QUICK); |pq9i)e&
}
fWi/mK3c
private static String[] name={ +#< Z/
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" @A*>lUo
}; cKoW5e|u
|z:4T%ES
private static Sort[] impl=new Sort[]{ %so{'rQl
new InsertSort(), ]T2Nr[vu
new BubbleSort(), 6Q_A-X3hk
new SelectionSort(), B_b5&M@
new ShellSort(), _)~VKA]""
new QuickSort(), fz2}M:u
new ImprovedQuickSort(), jcBZ#|B7;
new MergeSort(), R-1MD
new ImprovedMergeSort(), 8~TKiR5
new HeapSort() V@O)7ND
}; 8VO];+N
6CW5ay_,
public static String toString(int algorithm){ 'U0W
return name[algorithm-1]; X|ZAC!J5>
} zEukEA^9`
LNHi}P~
public static void sort(int[] data, int algorithm) { wEJzLFCn
impl[algorithm-1].sort(data); G'(rjH>q
} BHZhdm@),
[+xsX*+
public static interface Sort { \4C[<Gbx$(
public void sort(int[] data); g%!U7CM6h
} 10OkrNQ
n9`]}bnX
public static void swap(int[] data, int i, int j) { aJA( UN45
int temp = data; !@N?0@$/
data = data[j]; oM
Z94,3
data[j] = temp; b(Tvc
} Y#~A":A
} /@\R