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。 VKu|=m2vB
插入排序: e?<$H\
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package org.rut.util.algorithm.support; * & : J
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import org.rut.util.algorithm.SortUtil; J :l%
/** IYe ,VL
* @author treeroot scyv]5Hm!
* @since 2006-2-2 !_?#f|
* @version 1.0 6t'vzcQs
*/ R]NCD*~
public class InsertSort implements SortUtil.Sort{ KP CZiu7
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/* (non-Javadoc) Fr hI[D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 86W.z6
*/ A>rN.XW
public void sort(int[] data) { 3-_`x9u*
int temp; ,@aF#
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ad`7[fI
}
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} ?zK\!r{
} }VqCyJu&{
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} ?S'Wd=
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冒泡排序: ?-=<7
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package org.rut.util.algorithm.support; >(Fy6m
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import org.rut.util.algorithm.SortUtil; Mc6v
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/** ye`-U?7.
* @author treeroot 4#ZZwa]y
* @since 2006-2-2 {
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* @version 1.0 8:k-]+#o
*/ V BjA$.
public class BubbleSort implements SortUtil.Sort{ 4B@Ir)^(*
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/* (non-Javadoc) 4)d"}j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +krDmU9(
*/ [ N0"mE<
public void sort(int[] data) { (4IH%Ez){
int temp; A5,(P$@k
for(int i=0;i for(int j=data.length-1;j>i;j--){ s[}cj+0
if(data[j] SortUtil.swap(data,j,j-1); afye$$X
} (
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} B dxV [SF
} DS=Dg@y
} BoofJm
gNSsT])
} R
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yAu.=Eo7
选择排序: +z+u=)I
F<(?N!C?@
package org.rut.util.algorithm.support; 34t[]v|LD
h 2C9p2.
import org.rut.util.algorithm.SortUtil; >Slu?{l'
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/** O[R
* @author treeroot Z>hGqFZ0{
* @since 2006-2-2 kI,O9z7A7
* @version 1.0 Te H_DVxj
*/ z*`nfTw l
public class SelectionSort implements SortUtil.Sort { %]!xr6d
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/* Go PK. E$
* (non-Javadoc) 2 5Ia
* G,XUMZ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %[fZ@!B
*/ ?A~a}bFZ
public void sort(int[] data) { gk4DoO j#P
int temp; .}3K9.hkr
for (int i = 0; i < data.length; i++) { z/|tsVK
int lowIndex = i; OyVP_Yx,V
for (int j = data.length - 1; j > i; j--) { {%G9iOV.
if (data[j] < data[lowIndex]) { i7-~"g
lowIndex = j; tRJ5IX ##L
} 6vsA8u(|V#
} eZAMV/]jH
SortUtil.swap(data,i,lowIndex); :>{!%-1Z
} H^*AaA9-
} A6]X
aF
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} (g@\QdH`|
mdEJ'];AH
Shell排序: 0|FxSc
'Og@<~/Xy
package org.rut.util.algorithm.support; qsp.`9!
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import org.rut.util.algorithm.SortUtil; x)Bbo9J
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/** p"p~Bx
* @author treeroot HvG %##
* @since 2006-2-2 u_$4xNmQ
* @version 1.0 dEtjcId
*/ 2$5">%?
public class ShellSort implements SortUtil.Sort{ +FqD.= 8
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/* (non-Javadoc) 4T(d9y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Cjr]l!
*/ RbTGAA
public void sort(int[] data) { KhfADqji|
for(int i=data.length/2;i>2;i/=2){ JE-*o"&
for(int j=0;j insertSort(data,j,i); Bk~C$'x4
} bh1$
A
} W+#Q>^ Q>
insertSort(data,0,1); cb /Q<i
} |T""v_q
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/** *^|\#UIk
* @param data ?d-w#<AiV
* @param j BA:x*(%~
* @param i 'c7nh{F
*/ x^[,0?y2
private void insertSort(int[] data, int start, int inc) { 6]b"n'G
int temp; aNEah
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); sh_;98^
} iibG$?(
} cDY)QUmi
} H9(?yI@Zr#
EcB
!bf
} >;I8w(
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快速排序: t|>zke!'
s;9Du|0f^
package org.rut.util.algorithm.support; ad: qOm
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import org.rut.util.algorithm.SortUtil; X>[i<ei
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/** *yRsFC{,
* @author treeroot Dm)B? H"
* @since 2006-2-2 pz
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* @version 1.0 7?=^0?a
*/ XG.[C>
public class QuickSort implements SortUtil.Sort{ V+"%BrM
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/* (non-Javadoc) pr#%VM[':R
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WT ;2aS:
*/ SUUNC06V
public void sort(int[] data) { o4kLgY !Q
quickSort(data,0,data.length-1); &" t~d}Rg
} w.k9{f
private void quickSort(int[] data,int i,int j){ =tP9n ;D
int pivotIndex=(i+j)/2; nv:Qd\UM
file://swap v]V N'Hs?
SortUtil.swap(data,pivotIndex,j); k\ #;
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int k=partition(data,i-1,j,data[j]); w1)TnGT
SortUtil.swap(data,k,j); 2L](4Q[M
if((k-i)>1) quickSort(data,i,k-1); GM%OO)dO}
if((j-k)>1) quickSort(data,k+1,j); y8~OkdlN#
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} G*9>TavE
/** }#ZRi}f2VJ
* @param data ]#]Z]9w
* @param i &|k=mxox\
* @param j .kBkYK8*t
* @return LIcc0w3
*/ _&/`-"3y
private int partition(int[] data, int l, int r,int pivot) { /^.S
nqk
do{ A7X
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); $yASWz
SortUtil.swap(data,l,r); f=l/Fp}4UH
} +^Xf:r`
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while(l SortUtil.swap(data,l,r); bZYayjxZ5i
return l; ZW [&7[4
} &THtQ1D
.#QE*<T)]
} @A1f#Ed<
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改进后的快速排序: 7~XC_Yc1
s6|'s<x"j
package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; fY00
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/** d{7ZO#E
* @author treeroot "] V\ Y!
* @since 2006-2-2 A2 +%
* @version 1.0 M~2Us{ `
*/ kg^0 %-F
public class ImprovedQuickSort implements SortUtil.Sort { h vYRAQR:
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private static int MAX_STACK_SIZE=4096; a yoC]rE
private static int THRESHOLD=10; R2Tt6
/* (non-Javadoc) ^!\1q<@n
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #"UO`2~`l
*/ wG,"X'1
public void sort(int[] data) { MR1I"gqE}I
int[] stack=new int[MAX_STACK_SIZE]; |E1U$,s~u
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int top=-1; QOXo(S
int pivot; 3lp'U&3`5
int pivotIndex,l,r; jB?SX
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stack[++top]=0; +|LM"
stack[++top]=data.length-1; H4y9\
-
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while(top>0){ r ]7: ?ir
int j=stack[top--]; wo0j/4o
int i=stack[top--]; O^MI073Q>t
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pivotIndex=(i+j)/2; ,JZ>)(@)
pivot=data[pivotIndex]; 7% D 4
r E m/Q!
SortUtil.swap(data,pivotIndex,j); oy8jc];SO
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file://partition Q7aPW\-
l=i-1; Jo {:]:
r=j; \|0z:R;X
do{ ?/o 8f7Z
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); w,p'$WC*
SortUtil.swap(data,l,r); T aS1%(
} KkCGL*]K
while(l SortUtil.swap(data,l,r); |cU75
S 1
SortUtil.swap(data,l,j); C<D$Y,[w
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if((l-i)>THRESHOLD){ @}4aF|
stack[++top]=i; P2'N4?2
stack[++top]=l-1; (mIjG)4t
} p]mN)
if((j-l)>THRESHOLD){ fxd+0R;f
stack[++top]=l+1; tB4mhX|\
stack[++top]=j; }b\hRy~=r
} }nlS&gew^
^m#tWb)f
} T[SK>z
file://new InsertSort().sort(data); )$!b`u
insertSort(data);
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} $Lp [i
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/** WutPy_L<
* @param data 6nL^"3@S!
*/ 9rMO=
private void insertSort(int[] data) { ^VXhv9\>B
int temp; MDlH[PJ@i
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); M.Yp'Av
} C7C4
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} ooVs8T2
} 9ngxkOGx
yJI~{VmU7
} 3=d%WPgQ
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归并排序: /
dJz?0
hVF^"$
package org.rut.util.algorithm.support; Z<;W*6J
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import org.rut.util.algorithm.SortUtil; PuJ3#H
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/** EnWv9I<
* @author treeroot )95k3xo
* @since 2006-2-2 q\@Zf}
* @version 1.0 yUnV%@.
*/ 7W)W9=&BT
public class MergeSort implements SortUtil.Sort{ MKfK9>a
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/* (non-Javadoc) 3Q$4`p;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;5ki$)v"
*/ =Ydrct
public void sort(int[] data) {
JQQ[jl;
int[] temp=new int[data.length]; ,'0#q
mergeSort(data,temp,0,data.length-1); v%:deaF
} E<jajYj
8m{e,o2.
private void mergeSort(int[] data,int[] temp,int l,int r){ ;}E}N:A
int mid=(l+r)/2; NF&Sv
if(l==r) return ; 8JY0]G6
mergeSort(data,temp,l,mid); )NZH{G
mergeSort(data,temp,mid+1,r); v Z9OJrF
for(int i=l;i<=r;i++){ WK6,K92
temp=data; -zFJ)!/?
} 8NfXYR#
int i1=l; ?z.?(xZ 6
int i2=mid+1; f]i"tqoI
for(int cur=l;cur<=r;cur++){ |#_p0yPy
if(i1==mid+1) w x]?D%l
data[cur]=temp[i2++]; Onq^|r's&
else if(i2>r) gkd4)\9
data[cur]=temp[i1++]; gk|>E[.
else if(temp[i1] data[cur]=temp[i1++]; oJ4HvrUO
else tY;<S}[@7w
data[cur]=temp[i2++]; 0I.KHIBk
} a]r+np]vTy
} t)&U'^
3Z";a
} ?+Gt?-! 5q
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改进后的归并排序: !MKecRG_
)J[m>tyY5
package org.rut.util.algorithm.support; Z9DfwWI2nu
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import org.rut.util.algorithm.SortUtil; _|u}^MLO
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/** v/ N[)<
* @author treeroot 44u)F@)
* @since 2006-2-2 Yk|6?e{+)
* @version 1.0 +g
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*/ !CU-5bpu
public class ImprovedMergeSort implements SortUtil.Sort { %4Lo Em=U
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private static final int THRESHOLD = 10; K[icVT2v~
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/* )Dz]Pv]H'
* (non-Javadoc) ym|7i9
* L?/AKg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S=,czs3N
*/ CK[8y&
public void sort(int[] data) { P4#i]7%
int[] temp=new int[data.length]; 3Rb#!tx9
mergeSort(data,temp,0,data.length-1); 4MPy}yT*
} ^y@
W\
@/^<9
private void mergeSort(int[] data, int[] temp, int l, int r) { C$[iduS
int i, j, k; $0 .6No_|
int mid = (l + r) / 2; W^8
if (l == r) d` ttWWPw
return; h,$CJdDY]
if ((mid - l) >= THRESHOLD) %e]G]B%
mergeSort(data, temp, l, mid); 7dY_b
else 6B8!}6Ojc
insertSort(data, l, mid - l + 1); .T3N"}7[
if ((r - mid) > THRESHOLD) j;`pAN('
mergeSort(data, temp, mid + 1, r); rci,&>L"
else av!;k2"
insertSort(data, mid + 1, r - mid); 1Rd|P<y
-rU_bnm
for (i = l; i <= mid; i++) { HX2u{2$
temp = data; UPPDs "
} 0%+T U4Xx
for (j = 1; j <= r - mid; j++) { H.Z:at5n
temp[r - j + 1] = data[j + mid]; 56AaviE C
} ]RQQg,|D
int a = temp[l]; }yU,_:
int b = temp[r]; /"Om-DK%
for (i = l, j = r, k = l; k <= r; k++) { h8O[xca/~
if (a < b) { @B~/0
9
data[k] = temp[i++]; 9QI\[lT&
a = temp; ?jBna
~
} else {
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data[k] = temp[j--]; q'M-a tE.
b = temp[j]; oHbEHS61
} 'd1E~A
} 8sg8gBt
} .dV o[m;
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/** X1i6CEa<
* @param data |jaUVE_2[
* @param l &|26x
>
* @param i U\
y?P:yy
*/ Om{[ <tL
private void insertSort(int[] data, int start, int len) { !/['wv@
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); W<B8P S$
} =[?2'riI
} 'e\m6~u\hm
} ^`\c;!)F<
} IX^k<Jqr
z(3mhMJY
堆排序: yGH'|`
ZqkP# ]+Y'
package org.rut.util.algorithm.support; JQE^ bcr
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import org.rut.util.algorithm.SortUtil; @=b0>^\m
Hv<%_t_/
/** l8%x(N4
* @author treeroot M{:gc7%
* @since 2006-2-2 ,ibI@8;#~'
* @version 1.0 dt)
BMF8
*/ -(qoz8H5
public class HeapSort implements SortUtil.Sort{ b2H!{a"
)"jG)c^1*
/* (non-Javadoc) }vxb, [#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hX 9.%-@sR
*/ 0: h;ots'
public void sort(int[] data) { @C7S^|eo
MaxHeap h=new MaxHeap(); m^O:k"+ !
h.init(data); $ZXy&?4
for(int i=0;i h.remove(); r['T.yo
System.arraycopy(h.queue,1,data,0,data.length); 0d:t$2~C
} DhY9)>4M
iX.=8~3
private static class MaxHeap{ Rmn| "ZK
'9*wr*
void init(int[] data){ W2yNEiH
this.queue=new int[data.length+1]; %7O`]ik:
for(int i=0;i queue[++size]=data; g 6>RyjN
fixUp(size); }`IN5NdYp
} c$?qN&X_K
} 8b(UqyV
;MCv
private int size=0; dj?.Hc7od
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;|
private int[] queue; A86#7
8:L%-
public int get() { NV*aHci
return queue[1]; @*q\$Eg}2
} ?Hf^&yo
8S@ ~^D
public void remove() { @+Berb
SortUtil.swap(queue,1,size--); Otn,(j;u
fixDown(1); k^]+I%?Q
} _"a(vfl#
file://fixdown {+z+6i
private void fixDown(int k) { 8:$kFy\A'
int j; Q2^}NQO=
while ((j = k << 1) <= size) { M$%aX,nk'
if (j < size %26amp;%26amp; queue[j] j++; sryujb.,
if (queue[k]>queue[j]) file://不用交换 0UWLs_k:
break; W}WGg|ug
SortUtil.swap(queue,j,k); )+oDa{dZ
k = j; 88pz<$
} /Rx%}~x/m
} t{!}^{
"5
private void fixUp(int k) { emw3cQ
while (k > 1) { 8_Y{7;<ey
int j = k >> 1; 6O$OM
if (queue[j]>queue[k]) MrLDe{^C2
break;
=^q:h<
SortUtil.swap(queue,j,k); O<iE,PN)
k = j; *u
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} 6peO9]Zy
} #rzxFMA"
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} `8xe2=Ub
}/(fe`7:
} ?*4&Z.~J
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SortUtil: }3lM+]pf
;'}1
package org.rut.util.algorithm; 4rwfY<G
"]kaaF$U%
import org.rut.util.algorithm.support.BubbleSort; V`S6cmwdc\
import org.rut.util.algorithm.support.HeapSort; GZXUB0W\@)
import org.rut.util.algorithm.support.ImprovedMergeSort; bX|Z||img
import org.rut.util.algorithm.support.ImprovedQuickSort; ~e~4S~{
import org.rut.util.algorithm.support.InsertSort; D>?%p"e
import org.rut.util.algorithm.support.MergeSort; ]8d]nftY
import org.rut.util.algorithm.support.QuickSort; zJ3{!E}`v
import org.rut.util.algorithm.support.SelectionSort; &Zd{ElM
import org.rut.util.algorithm.support.ShellSort; f*1.Vg0`-
2ztP'
/** bzk@6jR1
* @author treeroot -g;iMqh#
* @since 2006-2-2 -7'>Rw
* @version 1.0 {{SQL)yJ
*/ G0CmY43
public class SortUtil { ]#j]yGV
public final static int INSERT = 1; Rw^4S@~T
public final static int BUBBLE = 2; '2uQ
public final static int SELECTION = 3; 6}n_r}kNR
public final static int SHELL = 4; Xy_+L_h^
public final static int QUICK = 5; Z7K;~*
public final static int IMPROVED_QUICK = 6; vs7Hg)F
public final static int MERGE = 7; ="d}:Jl
public final static int IMPROVED_MERGE = 8; )(PA:j
public final static int HEAP = 9; +7^%fX;3pW
=MB[v/M59w
public static void sort(int[] data) { mAk)9`f/
sort(data, IMPROVED_QUICK); >e=tem~/
} t$]lK6
private static String[] name={ |M)'@s:
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" BtVuI5*h
}; Rl.3p<sX
SEIGs_^'\
private static Sort[] impl=new Sort[]{ Q;)[~p
new InsertSort(), ,K+K`"Oy
new BubbleSort(), (/v(.t
new SelectionSort(), 9{'GrL
new ShellSort(), ^7Z)/c`"
new QuickSort(), jU@qQ@|
new ImprovedQuickSort(), $ze%!C
new MergeSort(), Zh{Pzyp
new ImprovedMergeSort(), yJppPIW^
new HeapSort() dE.R$SM
}; \P^WUWY
eqZ V/a
public static String toString(int algorithm){ c,!Ijn\;(
return name[algorithm-1]; )f*&}SV
} uPr@xff
;} Ty b
public static void sort(int[] data, int algorithm) { Z8z.Xn
impl[algorithm-1].sort(data); Wf-i)oc4I
} TlQ#0_as[
Xb?P'nD
public static interface Sort { ?`uY*+u
public void sort(int[] data); Eu l,1yR
} -3_-n*k!
)0j^Fq5[+
public static void swap(int[] data, int i, int j) { ">v76%>Z7
int temp = data; =v:vc~G6
data = data[j]; }NMA($@A
data[j] = temp; 5T:e4U&
} HIk5Q'e k
} _o'ii
VDuD