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。 |VmQ
插入排序: M4K>/-9X+V
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package org.rut.util.algorithm.support; M9/J!s
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import org.rut.util.algorithm.SortUtil; ]Ab$IKY
/** &NK6U
* @author treeroot j,v2(e5:
* @since 2006-2-2 m-R`(
* @version 1.0 yD(v_J*
*/ c{!XDiT]P
public class InsertSort implements SortUtil.Sort{ vf?m-wh
XT\Q"=FD
/* (non-Javadoc) ICUI0/J
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;w^{PZBg
*/ H#B97IGT
public void sort(int[] data) { P|;=dX#-
int temp; (z^987G
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !N\i9w}
} ^\FOMGai
} B^BbA-I
} &u0on)E
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} g/OL^A
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冒泡排序: 89[OaT_hs
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package org.rut.util.algorithm.support; =QW:},sp
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import org.rut.util.algorithm.SortUtil; Pql;5
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/** U&L?IT=x
* @author treeroot @mu=7_$U
* @since 2006-2-2 D]hwG0Chd
* @version 1.0 ItwJL`
*/ )k&!&
public class BubbleSort implements SortUtil.Sort{ dPyZzMes=
G$CI~0Se:
/* (non-Javadoc) C%;J9(r
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6" |+\
*/ Fes/8*-
public void sort(int[] data) {
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int temp; fC!+"g55
for(int i=0;i for(int j=data.length-1;j>i;j--){ (zhi/>suG
if(data[j] SortUtil.swap(data,j,j-1); -+&sPrQ
} Xv?'*2J
} YE1X*'4
} [+>cW0a
} <jtu/U]78|
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} Ui05o7xg~p
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选择排序: .{66q#.
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package org.rut.util.algorithm.support; Lb%:u5X\D@
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import org.rut.util.algorithm.SortUtil; /PgcW
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/** [h~#5x
* @author treeroot T|ZJ$E0
* @since 2006-2-2 .?;"iv+
* @version 1.0 U$AV"F&!&}
*/ Oh/2$72
public class SelectionSort implements SortUtil.Sort { '{:lP"\,L
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/* p$zj2W+sN
* (non-Javadoc) S '%!KGVe
* R^tDL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hT[w" &3
*/ TW~9<c
public void sort(int[] data) { 'A#F< x
int temp; /|aD,JVN"
for (int i = 0; i < data.length; i++) { %$}*y
int lowIndex = i; ljw>[wNv
for (int j = data.length - 1; j > i; j--) { KPB^>,T2{
if (data[j] < data[lowIndex]) { k)B]|,g7G0
lowIndex = j; 7Un5Y[FZo
} _J-3{a
} SZm&2~|J
SortUtil.swap(data,i,lowIndex); |(O _K(
} ul[+vpH9
} +oR wXO3W
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} SKrkB~%z
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Shell排序: 7~7_T#dTh
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package org.rut.util.algorithm.support; Mh*^@_h?
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import org.rut.util.algorithm.SortUtil; o%$'-N
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/** LSW1,}/B
* @author treeroot ?s5hckhh
* @since 2006-2-2 _!?iiO
* @version 1.0 ucgp=bye
*/ j3)fmlA
public class ShellSort implements SortUtil.Sort{ UsBtk
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/* (non-Javadoc) gDBdaxR<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ Qlgii_?#@
public void sort(int[] data) { =RH7 j
for(int i=data.length/2;i>2;i/=2){ 3( `NHS~h
for(int j=0;j insertSort(data,j,i); O'~;|-Z<
} ;&MI
M`&$
} WwYy[3U
insertSort(data,0,1); ~x 0x.-^A
} x,>r}I>^Q
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/** P*zOt]T
* @param data X!ad~bt
* @param j 92)e/t iP
* @param i kqyPb$Wy
*/ tv8}O([
private void insertSort(int[] data, int start, int inc) { mu#
a
int temp; (_$'e%G0
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 2/ v9
} mq*Efb)!
} +-+%6O<C
} =&xNdc
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} KG8Km
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快速排序: P<{N)H 2r
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package org.rut.util.algorithm.support; BA t0YE`-,
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import org.rut.util.algorithm.SortUtil; m C&*K
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/** w5tcO%+k1
* @author treeroot vS_Ji<W~E
* @since 2006-2-2 v"N%w1`.e
* @version 1.0 qL?`l;+
*/ \OX;ZVb?5
public class QuickSort implements SortUtil.Sort{ fNTe_akp
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/* (non-Javadoc) TDo!yQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7U_OUUg
*/ `X ;2lgL
public void sort(int[] data) { 9et%Hn.K'
quickSort(data,0,data.length-1); N5\]VCX
} @XRN#_{
private void quickSort(int[] data,int i,int j){ 7C"&f *lEi
int pivotIndex=(i+j)/2; J52- qR/
file://swap `$N()P
SortUtil.swap(data,pivotIndex,j); &q0s8'qA
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int k=partition(data,i-1,j,data[j]); >p;cbp[ht
SortUtil.swap(data,k,j); #)hJ.0~3
if((k-i)>1) quickSort(data,i,k-1); dZ"w2ho
if((j-k)>1) quickSort(data,k+1,j);
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} MmPLJ
/** (^4V]N&
* @param data heN?lmC
* @param i u eD_<KjE=
* @param j :kz"Wya.
* @return Q"2J2211
*/ :$J4T;/{
private int partition(int[] data, int l, int r,int pivot) { _bm8m4Lk
do{ Oj~4uT&"
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); MhXJ /bup
SortUtil.swap(data,l,r); +#a_Y
} \Q m1+tg
while(l SortUtil.swap(data,l,r); c^ifHCt|
return l; 9yt)9f
} RC>79e/u<
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} -SGoE=
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改进后的快速排序: 1FfSqd
:497]c3#5C
package org.rut.util.algorithm.support; (_aM26s
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import org.rut.util.algorithm.SortUtil; *t3uj
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/** WMw^zq?hd@
* @author treeroot mv;;0xH
* @since 2006-2-2 -{ M(1vV(=
* @version 1.0 Hk8pKpn3
*/ `C +>PCO
public class ImprovedQuickSort implements SortUtil.Sort { 1U(P0$C
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private static int MAX_STACK_SIZE=4096; ]
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private static int THRESHOLD=10; Dq:>]4%
/* (non-Javadoc) +i0j3.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;VI/iwg
*/ mufJ@Y S#
public void sort(int[] data) { 7j22KQ|EX^
int[] stack=new int[MAX_STACK_SIZE]; |k ]{WCD]
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int top=-1;
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int pivot; PZjK6]N\
int pivotIndex,l,r; `1fNB1c
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stack[++top]=0; td"D&1eQ@
stack[++top]=data.length-1; EO:
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while(top>0){ e[
9
int j=stack[top--]; c> }fy
int i=stack[top--]; (0W)Jd[
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pivotIndex=(i+j)/2; e"@Ag:r@a
pivot=data[pivotIndex]; Un.u{$po
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SortUtil.swap(data,pivotIndex,j); V9dJNt'Ui
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file://partition V9%!B3Sb
l=i-1; jMV9r-{*+
r=j; -Y=o
do{ |_GESpoHH
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); b\9MM
SortUtil.swap(data,l,r); XJI
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} ]XS[\qo
while(l SortUtil.swap(data,l,r); ]aN]H a
SortUtil.swap(data,l,j); WnkI i,<
\]y /EOT
if((l-i)>THRESHOLD){ KW 78J~u+
stack[++top]=i; $[1J[eY*
stack[++top]=l-1; s-"oT=
} |q+dTy_n
if((j-l)>THRESHOLD){ |[B JZ
stack[++top]=l+1; 8uD%
stack[++top]=j; f(Uo?_as
} ];63QJU
RAUD8Z
} ~M?^T$5
file://new InsertSort().sort(data); QGoBugU
insertSort(data); .2v)x
} VTIRkC
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/** GJo`9
* @param data :% m56
*/ *< ?~
private void insertSort(int[] data) { y|Vwy4tK9
int temp; (BG
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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); >= VCKN2'j
} nSR<( -j!
} 1 LUvs~Qu
} *ud/'HR8]
! a!^'2
} 3:ELYn
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归并排序: *\"+/
,JONc9
package org.rut.util.algorithm.support; ;cD&qheDV
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import org.rut.util.algorithm.SortUtil; U3OXO1
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/** l1uv]t <
* @author treeroot $_orxu0W
* @since 2006-2-2 OZn40"`
* @version 1.0 G'c6%;0)
*/ <<~swN
public class MergeSort implements SortUtil.Sort{ >'g>CD!
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/* (non-Javadoc) 'eDV-cB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %RD%AliO}K
*/ t1rAS.z&
public void sort(int[] data) { +
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int[] temp=new int[data.length]; -hpC8YS
mergeSort(data,temp,0,data.length-1); )gPkL
r
} ^6i,PRScS
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private void mergeSort(int[] data,int[] temp,int l,int r){ d*tn&d~k,
int mid=(l+r)/2; .\}nDT
if(l==r) return ; W~Ae&gcn#
mergeSort(data,temp,l,mid); v FWg0 $,
mergeSort(data,temp,mid+1,r); ]!'9Y}9a
for(int i=l;i<=r;i++){ dO!5` ]
temp=data; S<Od`I
} (>M?
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int i1=l; P`TJqJiY~
int i2=mid+1; CEl9/"0s6
for(int cur=l;cur<=r;cur++){ _4-UM2o;
if(i1==mid+1) 0*F<tg,+]
data[cur]=temp[i2++]; 6H'W]T&
else if(i2>r) .F^372hH3
data[cur]=temp[i1++]; JGG (mrvR
else if(temp[i1] data[cur]=temp[i1++]; 7L !$hk
else !v68`l15
data[cur]=temp[i2++]; 6#upBF:
} _]6n]koD,
} AoFxh o
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} ukwO%JAr
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改进后的归并排序: w7`09oJm
WNcJ710k27
package org.rut.util.algorithm.support; %Gc)$z/Wd
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import org.rut.util.algorithm.SortUtil; \?~cJMN
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/** AEE&{_[S
* @author treeroot `FHKQS5
* @since 2006-2-2 ?my2dd,|
* @version 1.0 aM!%EaT
*/ )m<CmYr2
public class ImprovedMergeSort implements SortUtil.Sort { =)IV^6~b
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private static final int THRESHOLD = 10; HMl
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/* Cd'`rs}3
* (non-Javadoc) E:ti]$$
* Ck>{7Gw
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |?<^4U8
*/ L.Tu7+M4
public void sort(int[] data) { c$b~?Mx
int[] temp=new int[data.length]; {N'<_%cu
mergeSort(data,temp,0,data.length-1); ~fY\;
} SI9PgC
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private void mergeSort(int[] data, int[] temp, int l, int r) { {vox
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int i, j, k; O%*:fd,o-
int mid = (l + r) / 2; Vl`!6.F3
if (l == r) \kEC|O)8
return; a_U[!`/w
if ((mid - l) >= THRESHOLD) q:<vl^<j
mergeSort(data, temp, l, mid); ~=k?ea/>
else @@"abhT
insertSort(data, l, mid - l + 1); J L!:`#\
if ((r - mid) > THRESHOLD) (g3@3.Kk)
mergeSort(data, temp, mid + 1, r); `L7Cf&W\l8
else
/33m6+
insertSort(data, mid + 1, r - mid); 9?zi
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for (i = l; i <= mid; i++) { gtRVXgI
temp = data; sM6o(=>
} ,u^%[ejH
for (j = 1; j <= r - mid; j++) { @r3,|tkrz
temp[r - j + 1] = data[j + mid]; y7U?nP ')+
} g[ O6WZ!F_
int a = temp[l]; <m0m8p"G
int b = temp[r]; $8WeWmY
for (i = l, j = r, k = l; k <= r; k++) { Rg%Xy`gS
if (a < b) { 3S{3AmKj?
data[k] = temp[i++]; ^Fg!.X_
a = temp; \W+Hzf]
W#
} else { :@#6]W
data[k] = temp[j--]; OCv,EZ
b = temp[j]; /amWf^z
} V#TNv0&0
} -muP.h/
} I/)*pzt8
N?><%fra
/** ~'VVCtA
* @param data nUScDb2|
* @param l 7Y6b<:4j
* @param i 8 c5=Px2\
*/ J!d=aGY0-
private void insertSort(int[] data, int start, int len) { )*nZ6Cg'
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Z=9gok\
} r;@"s g
} FE3uNfQs|
} EpB3s{B"
} DA^!aJ6iF
:Ny^-4-N
堆排序: (CrP6]=
BY>]6SrP
package org.rut.util.algorithm.support; hUe\sv!x?
;! ,I1{`
import org.rut.util.algorithm.SortUtil; .Z(Q7j^
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/** u]sxX")
* @author treeroot c]A @'{7
* @since 2006-2-2 zvR;Tl6]
* @version 1.0 iiv`ji
*/ C@!bd+'
public class HeapSort implements SortUtil.Sort{ m*vz
=+w/t9I[
/* (non-Javadoc) &/8B(0<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JQ9+kZ
*/ .$a|&P=S
public void sort(int[] data) { w}0rDWuR[
MaxHeap h=new MaxHeap(); @YbZ"Jb
h.init(data); _V(FHjY
for(int i=0;i h.remove(); Xa_:B\ic
System.arraycopy(h.queue,1,data,0,data.length); bJ^Jmb
} lu;gmWz
*3rp
g
private static class MaxHeap{ N9 TM
;^cMP1SH
void init(int[] data){ )WsR
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this.queue=new int[data.length+1]; +2g}wH)l
for(int i=0;i queue[++size]=data; SXx4^X
fixUp(size); rm4t
} `.3{
} ;E0x#JUrw
:
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private int size=0; GjyTM
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private int[] queue; ^f9>tI{
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public int get() { #6mr'e1
return queue[1]; ce7$#
# f
} Q}|0
<jqL4!<
public void remove() { 11RqP:zg
SortUtil.swap(queue,1,size--); L'O=;C"f
fixDown(1); eN0lJ ~
} DaqlL
file://fixdown oF_
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private void fixDown(int k) { ;i!$rL
int j; Z_s]2y1
while ((j = k << 1) <= size) { F%$lcQ04%
if (j < size %26amp;%26amp; queue[j] j++; lcXo>
if (queue[k]>queue[j]) file://不用交换 `l
break; dQ
Lo,S8(
SortUtil.swap(queue,j,k); Kl]l[!c7$
k = j; \qJ cs'D
} # blh9.V&F
} pV*d"~T
private void fixUp(int k) { @ 1FWBH~
while (k > 1) { jQ['f\R
int j = k >> 1; [nLd> 2P
if (queue[j]>queue[k]) `KUL4) g~
break; x LGMN)@r
SortUtil.swap(queue,j,k); rges`&0
k = j; %'eaW
} /4$ c-k
} 1w#vy1m J
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} M$e$%kPShE
#M<u^$Jz
} !}q@O-}j
AmK g;9LS
SortUtil: 7-mo\jw<
{BZ0x2
package org.rut.util.algorithm; rBZ00}
vy5I#q(k
import org.rut.util.algorithm.support.BubbleSort; g{JH5IZ~
import org.rut.util.algorithm.support.HeapSort; l"%WXi"X
import org.rut.util.algorithm.support.ImprovedMergeSort; 99~ZZG
import org.rut.util.algorithm.support.ImprovedQuickSort; QB*n
[(?
import org.rut.util.algorithm.support.InsertSort; U["IXR#
import org.rut.util.algorithm.support.MergeSort; j.:f=`xf
import org.rut.util.algorithm.support.QuickSort; P_(<?0l
import org.rut.util.algorithm.support.SelectionSort; {6iHUK
import org.rut.util.algorithm.support.ShellSort; n1)]. `
0>:`|IGnT2
/** NN~PWy1opa
* @author treeroot jV' tcFr4
* @since 2006-2-2 caZEZk#r;
* @version 1.0 GK&R.R]
*/ RQ,X0pS
public class SortUtil { qWJap-hb
public final static int INSERT = 1; {'cdi`
public final static int BUBBLE = 2; %:y"o_X_
public final static int SELECTION = 3; j#${L6
public final static int SHELL = 4; &Qt1~#1
public final static int QUICK = 5; R^rA.7T
public final static int IMPROVED_QUICK = 6; ).jna`A,
public final static int MERGE = 7; qot{#tk
d
public final static int IMPROVED_MERGE = 8; w[J.?v&^
public final static int HEAP = 9; ?uXY 6J"
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public static void sort(int[] data) { :fQN_*B4@4
sort(data, IMPROVED_QUICK); (qDJgf4fgn
} CFeAKjG
private static String[] name={ *2Q x69`
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" *-gmWATC6
}; e r"gPW
d4o_/[
private static Sort[] impl=new Sort[]{ fa,;Sw
new InsertSort(), ~TjTd
new BubbleSort(), c}w[T
new SelectionSort(), [yVcH3GcjI
new ShellSort(), 'h 7n}
new QuickSort(), cyWDtq
new ImprovedQuickSort(), kS_37-;
new MergeSort(), 3Z74&a$
new ImprovedMergeSort(), X
iM{YZ`B
new HeapSort() ar@ysBy
}; M+lI,j+
#J%Fi).^)
public static String toString(int algorithm){ [Rzn>
return name[algorithm-1]; [}y"rs`!
} kLbo |p"cT
h|ja67VG
public static void sort(int[] data, int algorithm) { \?AA:U*
impl[algorithm-1].sort(data); kaV Ye)~
} HK<oNr.d52
hYh~[Kr^@^
public static interface Sort { 6H:EBj54?
public void sort(int[] data); {=_xze)
} YrTjHIn~w
2hTH
public static void swap(int[] data, int i, int j) { I#|ib
int temp = data; OgkbN`
data = data[j]; (Jk:Qz5
data[j] = temp; 2_){4+,fu
} 6/Z 8/PL
} 42 Sk`