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。 mNKcaM?h
插入排序: 6f)7*j~
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package org.rut.util.algorithm.support; wQ?Z y;/S
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import org.rut.util.algorithm.SortUtil; IAMtMO^L
/** H^<?h6T
* @author treeroot
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* @since 2006-2-2 dpcU`$kt
* @version 1.0 \d-9Ndp
nf
*/ *Rgl(Ba
public class InsertSort implements SortUtil.Sort{ /Nns3oE
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/* (non-Javadoc) &(h@]F!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L~*nI d
*/ T@mYHKu
public void sort(int[] data) { Mo]aB:a
int temp; >%A~ :
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); y(X^wC
} S^{tRPF%d
} c3(0BSv
} s:ojlmPb
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} ';LsEI[
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冒泡排序: <SiJA`(7
Lw`}o` D
package org.rut.util.algorithm.support; uTvf[%EHW
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import org.rut.util.algorithm.SortUtil; SK5__Ix
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/** }ISR +./+
* @author treeroot qRXHaQi@9
* @since 2006-2-2 \m(>Q
* @version 1.0 MbeK{8~E%l
*/ 6kO+E5;X
public class BubbleSort implements SortUtil.Sort{ !'Ww%ZL\
jvhD_L/
/* (non-Javadoc) Tsocc5gWZ*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y4N)yMSl"
*/ ekd;sEO
public void sort(int[] data) { #M<u^$Jz
int temp; !}q@O-}j
for(int i=0;i for(int j=data.length-1;j>i;j--){ AmK g;9LS
if(data[j] SortUtil.swap(data,j,j-1); 7-mo\jw<
} {BZ0x2
} rBZ00}
} |WSmpuf
} c
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} S+l>@wa)|
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选择排序: x$KQ*P~q
L#fS P
package org.rut.util.algorithm.support; J]|S0JC`
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import org.rut.util.algorithm.SortUtil; S*%:ID|/C2
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/** S"/gZfxer
* @author treeroot `+(4t4@ew
* @since 2006-2-2 EUS^Gtc
* @version 1.0 1-Q>[Uz,
*/ G{0f*
cH)
public class SelectionSort implements SortUtil.Sort { Ryn@">sVI
u?KG%
/* M1I4Ot
* (non-Javadoc) tDtqTB}
* aZ}z/.b]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (, $Lp0mB7
*/ 5;A=8bryU
public void sort(int[] data) { ^9XAWj"
int temp; 2ZKy7p0/
for (int i = 0; i < data.length; i++) { :-~x~ah-
int lowIndex = i; 4Y d$RP
for (int j = data.length - 1; j > i; j--) { |UN#utw{^Y
if (data[j] < data[lowIndex]) { (qDJgf4fgn
lowIndex = j; CFeAKjG
} N|w;wF!3
} Rk}=SB-
SortUtil.swap(data,i,lowIndex); wD SSgk
} i~tps
} xI8v'[3
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} F8B:P7I
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Shell排序: uKo4nXVtp
mWuhXY^Q
package org.rut.util.algorithm.support; ;(IAhWE?7
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import org.rut.util.algorithm.SortUtil; A&_v:z4y/
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/** 9 'IDbe{
* @author treeroot ^@]yiED{g
* @since 2006-2-2 aq8mD^j -&
* @version 1.0 cd$,,
*/ +Q!Kj7EU/
public class ShellSort implements SortUtil.Sort{ (ewcj\l4*
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/* (non-Javadoc) /_r{7Gq.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >k(AQW5?
*/ y|YhDO
public void sort(int[] data) { 3Ael
for(int i=data.length/2;i>2;i/=2){ %j ?7O00@
for(int j=0;j insertSort(data,j,i); hYh~[Kr^@^
} 6H:EBj54?
} >Yfo $S_
insertSort(data,0,1); YrTjHIn~w
} b<KKF '
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/** A{Q~@1
* @param data #b{;)C fL
* @param j CxVrnb[`q
* @param i q,(hs]\@
*/ E5$uvxCI
private void insertSort(int[] data, int start, int inc) { ;MjOs&1f0K
int temp; <@=w4\5j9
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); x2+M0 }g
} _2WIi/6K
} M:w]g` LKl
} kYkck]|
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} [?#-JIZ3T
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快速排序: *JVJKqed
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package org.rut.util.algorithm.support; }fz;La:b
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import org.rut.util.algorithm.SortUtil; *.
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/** ]yA_N>k2K
* @author treeroot ^Xslj
* @since 2006-2-2 !_h<w ?)
* @version 1.0 }Yp]A
*/ HO;,Ya^l
public class QuickSort implements SortUtil.Sort{ }pv<<7}|
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/* (non-Javadoc) 5VW*h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cin3)lm
*/ CB?,[#r5f
public void sort(int[] data) { Q |^c5
quickSort(data,0,data.length-1); b=Y3O
} l
#
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private void quickSort(int[] data,int i,int j){ GK:pt8=
int pivotIndex=(i+j)/2; [T#9#3
file://swap NGb\e5?
SortUtil.swap(data,pivotIndex,j); L@6T~
_1P8rc"Dx
int k=partition(data,i-1,j,data[j]); :@+@vM;gh
SortUtil.swap(data,k,j); 7(KVA1P66
if((k-i)>1) quickSort(data,i,k-1); +4k7ti1Qb
if((j-k)>1) quickSort(data,k+1,j);
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} y&+Sp/6BYA
/** k'+Mc%pg4E
* @param data ]}dAm S/
* @param i !:Clzlg
* @param j Q
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* @return 8BwJWxBQ
*/ \+sP<'~M
private int partition(int[] data, int l, int r,int pivot) { :KJZo,\
do{ N^K@$bs4^
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); G7H'OB
&
SortUtil.swap(data,l,r); rfxLCiV
} Hf$LWPL)lM
while(l SortUtil.swap(data,l,r); KmRxbf
return l; STgYXA(
} d!]_n|B@9
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} Y/<
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改进后的快速排序: Fs)m;C
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package org.rut.util.algorithm.support; a,*~wmg
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import org.rut.util.algorithm.SortUtil; `1"Xj ^
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/** ?BnjtefIe
* @author treeroot pwO
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* @since 2006-2-2 j#E&u*IR
* @version 1.0 |\
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*/ %1VfTr5
public class ImprovedQuickSort implements SortUtil.Sort { W02swhS
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private static int MAX_STACK_SIZE=4096; | WMq&-$D
private static int THRESHOLD=10; 0^rDf
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/* (non-Javadoc) QAh6!<.;@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t.WWahNyY
*/ w"K;e (S
public void sort(int[] data) { 6H}8^'/u
int[] stack=new int[MAX_STACK_SIZE]; :0RfA%
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int top=-1; 96
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int pivot; q%A.)1<'_
int pivotIndex,l,r; lGtTZcg
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stack[++top]=0; Vtr5<:eEx
stack[++top]=data.length-1; j-j,0!T~b
)YP9
while(top>0){ Yn }Ivg
int j=stack[top--]; 'VTLp.~G~
int i=stack[top--]; rfS kQT
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pivotIndex=(i+j)/2; (Cjw^P|Y@
pivot=data[pivotIndex]; uKocEWB=/F
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SortUtil.swap(data,pivotIndex,j); ;nB.f.e`
/DBldL7yi
file://partition $q~:%pQv
l=i-1;
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r=j; 1ti4 ZM
do{ OwM.N+z#T
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); *
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SortUtil.swap(data,l,r); oaJnLd90W
} .IJgkP)!]
while(l SortUtil.swap(data,l,r); ESAFsJ$r;
SortUtil.swap(data,l,j); [Vaw$c-+[y
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if((l-i)>THRESHOLD){ q!P{a^Fnc
stack[++top]=i; Ki:.^
stack[++top]=l-1; Lk~aMbw#
} }\Mmp+<
if((j-l)>THRESHOLD){ >'X[*:Cx
stack[++top]=l+1; 60 z =bd]
stack[++top]=j; o|BEY3|
} To"J>:l
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} 7D%}(pX
file://new InsertSort().sort(data); A(Ss:7({
insertSort(data); _7LZ\V+MLW
} !DUC#)F
/** Hs~u&c
* @param data z;VabOr^
*/ >C|i^4ppI
private void insertSort(int[] data) { P@z,[,sy"$
int temp; W;Ei>~E
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); c _v;"Q Z
} q|+`ihut
} T[YGQT|B
} B:Xmc,|,
7#BUd/
} M'4$z^@Z
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归并排序: 9cm9;
D8''q%
package org.rut.util.algorithm.support; C`0;
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import org.rut.util.algorithm.SortUtil; ^
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/** ]wQ#8}zO
* @author treeroot aA-gl9
* @since 2006-2-2 Uj[E_4h
* @version 1.0
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*/ igD,|YSK`z
public class MergeSort implements SortUtil.Sort{ Y@Zv52,
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/* (non-Javadoc) 8T#tB,<fFW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \%FEQa0u
*/ )Q%hd |R
public void sort(int[] data) { -}Iw!p#O3
int[] temp=new int[data.length]; ![,W?
mergeSort(data,temp,0,data.length-1); n(MVm-H
} /.u0rxoRP}
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private void mergeSort(int[] data,int[] temp,int l,int r){ =#"ZO
int mid=(l+r)/2; pGO)9?j_N
if(l==r) return ; Dr!g$,9
mergeSort(data,temp,l,mid); LT3ViCZ-n
mergeSort(data,temp,mid+1,r); dlx"L%
for(int i=l;i<=r;i++){ [*k25N
temp=data; Iw<:
k
} u`]J]gE
int i1=l; 7O,y%NWaK
int i2=mid+1; 2/c^3[ccR
for(int cur=l;cur<=r;cur++){ oe8sixZ[
if(i1==mid+1) 2yyJ19Iul
data[cur]=temp[i2++]; ^U`Bj*"2
else if(i2>r) VHlN;6Qlff
data[cur]=temp[i1++]; -W:te7
else if(temp[i1] data[cur]=temp[i1++]; ,L"1Ah
else h!L/ZeRaV
data[cur]=temp[i2++]; w<ol$2&B
} / ao|v
} 2V1|b`b#4
BSGC.>$s
} wewYlm5@
VNmQ'EuV}2
改进后的归并排序: gJ8+HV
fgW>U*.ar
package org.rut.util.algorithm.support; vThK@P!s
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import org.rut.util.algorithm.SortUtil; o"Dk`L2
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/** 4[ 7)$
* @author treeroot :|\{mo1NB
* @since 2006-2-2 <=D\Ckmb
* @version 1.0 I+?9}t
*/ #xMl<
public class ImprovedMergeSort implements SortUtil.Sort { />Z`?
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private static final int THRESHOLD = 10; BP6|^Q
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/* 1FCHqqZ=
* (non-Javadoc) :q.g#:1s
* l1&NU'WW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;w/|5 ;{A;
*/ NT^m.o~4
public void sort(int[] data) { LB1AjNJ
int[] temp=new int[data.length]; YQ&Ww|xe
mergeSort(data,temp,0,data.length-1); ^11y8[[
} 6i6m*=h
%q~YJ*\
private void mergeSort(int[] data, int[] temp, int l, int r) { c /G4@D>
int i, j, k; 7Z#r9Vr
int mid = (l + r) / 2; 3q!hY
if (l == r) xIN&>D'|N
return; vnNX)$f
if ((mid - l) >= THRESHOLD) P9Yw\
mergeSort(data, temp, l, mid); 0~(K@U>#
else /YP,Wfd%
insertSort(data, l, mid - l + 1); BP& T|s
if ((r - mid) > THRESHOLD) ]5V=kNui
mergeSort(data, temp, mid + 1, r); dOm@cs
else o1m+4.-
insertSort(data, mid + 1, r - mid); 5cv&`h8uo_
6%hr]>L
for (i = l; i <= mid; i++) { 7wivu*0
temp = data; "G^Z>Z-`
} E^)>9f7
for (j = 1; j <= r - mid; j++) { JH4hy9i
temp[r - j + 1] = data[j + mid]; m~[4eH,
} i;u#<y{E
int a = temp[l]; *Vbf;=Mb
int b = temp[r]; VO (KQx
for (i = l, j = r, k = l; k <= r; k++) { }=dUASL
if (a < b) { &%@b;)]J
data[k] = temp[i++]; B# >7;xy>
a = temp; 0^H"eQO
} else { =N62 ){{
data[k] = temp[j--]; r~K5jL%z9
b = temp[j]; ZU=omRh5
} xppl6v(
} BwLggo
} i#&iT P`
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/** I`$"6 Xy
* @param data ma +iIt;
* @param l 1BA/$8G
* @param i Ihd{@6m
*/ 8=GgTpO5
private void insertSort(int[] data, int start, int len) { JE a~avyJ
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); tJ"8"T#6Vr
} 6aw1
} zS9HR1
} `b11,lg
} !mjrI "_
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堆排序: B<p-qPR K
b"DV8fdX
package org.rut.util.algorithm.support; 6T?$m7c
.T2P%Jn.
import org.rut.util.algorithm.SortUtil; pR3@loFQ`o
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/** m-<"`:+
* @author treeroot 'n>v}__&|
* @since 2006-2-2 sjZ@}Vk3b
* @version 1.0 gB3Tz(!
*/ 4Y2!q$}I+
public class HeapSort implements SortUtil.Sort{ 8|z@"b l)
lU`}
/* (non-Javadoc) H% peE9>$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !Ojf9 6is
*/ (bX77 Xr
public void sort(int[] data) { ]O^C'GzZ
MaxHeap h=new MaxHeap(); L[D<e?j
h.init(data); wWI1%#__|o
for(int i=0;i h.remove(); kH.W17D~
System.arraycopy(h.queue,1,data,0,data.length); Vr<eU>W
} U.$7=Zl8t
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private static class MaxHeap{ 0qCx.<"p8#
[P3].#"]M=
void init(int[] data){ 69/br @j%`
this.queue=new int[data.length+1]; z0jF.ub
for(int i=0;i queue[++size]=data; ;(F_2&he
fixUp(size); nlq"OzcH04
} Izapx\GK9
} Rv/=bY
$:RP tG
private int size=0; u ?
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hhM?I$t:
private int[] queue; /c&;WlE/n
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public int get() { Ft[)m#Dj`
return queue[1]; l0v]+>1i:
} Ag82tDL[u
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public void remove() { f4[Bj{F
SortUtil.swap(queue,1,size--); 4Odf6v,*@
fixDown(1); 6^+T_{gl
} ,ix> e
file://fixdown M>yt\qbkA
private void fixDown(int k) { Qy!;RaA3T
int j; Ih;I&D+e;
while ((j = k << 1) <= size) { z m&?G
if (j < size %26amp;%26amp; queue[j] j++; ] 'B4O1
if (queue[k]>queue[j]) file://不用交换 8HaBil
break; K:JM*4W
SortUtil.swap(queue,j,k); s?,\aSsU@
k = j; -s!cZ3
} }#Q?\
} 6p}dl>T_y
private void fixUp(int k) { 8rNRQOXOa
while (k > 1) { 2," (
int j = k >> 1; p%]ZG,
if (queue[j]>queue[k]) Jg2*$gL;_
break; n a3st*3V_
SortUtil.swap(queue,j,k); Cu`uP[# ch
k = j; (nUSgZz5
} kWKAtv5@w
} K]Rb~+a<
rQ:+LVfXjA
} u]uUm1Er
|/M^q{h&7s
} A4mnm6Tf
}Y=X{3+~.
SortUtil: F5(D A
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package org.rut.util.algorithm; H7}@56
6$y$ VeW
import org.rut.util.algorithm.support.BubbleSort; .*,W%r?1n6
import org.rut.util.algorithm.support.HeapSort; )bkJ['9
import org.rut.util.algorithm.support.ImprovedMergeSort; *$Tz g!/
import org.rut.util.algorithm.support.ImprovedQuickSort; .271at#-
import org.rut.util.algorithm.support.InsertSort; p4sU:
import org.rut.util.algorithm.support.MergeSort; ;&~9k?v7L
import org.rut.util.algorithm.support.QuickSort; ,mY3oyu
import org.rut.util.algorithm.support.SelectionSort; rF:l+I]
import org.rut.util.algorithm.support.ShellSort; <AN=@`+
Lt?k$U{qe)
/** $psPNJG
* @author treeroot [a2Q ^ab
* @since 2006-2-2 =kiDW6
JJU
* @version 1.0 7FYq6wi
*/ vkK8D#K
public class SortUtil { c)q'" r
public final static int INSERT = 1; '#ow9w+^
public final static int BUBBLE = 2; -n#fj;.2_
public final static int SELECTION = 3; P6~&,a
public final static int SHELL = 4; 5W4Tp% Lda
public final static int QUICK = 5; }n;.E&<[
public final static int IMPROVED_QUICK = 6; Pg%k>~i
public final static int MERGE = 7; 6jpfo'uB$
public final static int IMPROVED_MERGE = 8; +j!$88%Z{
public final static int HEAP = 9; $Ao
iH{f
yM`QVO!;
public static void sort(int[] data) { e'MLLC[
sort(data, IMPROVED_QUICK); OY'6 ~w9
} 37U$9]
private static String[] name={ Y3M"a8 e'
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 8v12<ktR`
}; $?M$^ -(e
*3s,~<''%
private static Sort[] impl=new Sort[]{ #P/}'rdt
new InsertSort(), Cz)/Bq
new BubbleSort(), SYaL@54
new SelectionSort(), Nxr %xTD
new ShellSort(), [qHtN.
new QuickSort(), NB)$l2<d
new ImprovedQuickSort(), {K ,-fbE
new MergeSort(), ;]I~AGH:
new ImprovedMergeSort(), *m.4)2u=
new HeapSort() =t!$72g\
}; ZD`p$:pT
RuBL_Vi
public static String toString(int algorithm){ 7Pp~)Kq=
return name[algorithm-1]; JXKo zy41
} me`|i-
%}ASll0uq
public static void sort(int[] data, int algorithm) { "IMq +
impl[algorithm-1].sort(data); $QC^hC
} /vrjg)fer
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public static interface Sort { }:9UI
public void sort(int[] data); yT pvKCC
} <52)
M?G4k]
public static void swap(int[] data, int i, int j) { -xMM}r
y
int temp = data; cjyb:gAO
data = data[j]; A>Y!d9]ti
data[j] = temp; 0?/vcsO
} dePI&z:
} 6 ,j&u7