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。 QpZCU]
插入排序: >q7/zl
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package org.rut.util.algorithm.support; FLzC kzJ:6
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import org.rut.util.algorithm.SortUtil; kMP3PS
/** K~ob]I<GiB
* @author treeroot $"[5]{'J
* @since 2006-2-2 _^ny(zy(
* @version 1.0 $zUHka
*/ Yg kd 1uI.
public class InsertSort implements SortUtil.Sort{ $]t3pAI[H0
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/* (non-Javadoc) +zf[Im%E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7U,[Ruu
*/ \]=''C=J
public void sort(int[] data) { M\rZr3
int temp; kt;uB
X3
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ]5Mq^@mD'
} F2:nL`]b[
} Zt LZW/`
} K*[`s'Ip-
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} f\U(7)2
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冒泡排序: &kp`1kv":
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package org.rut.util.algorithm.support; _(%;O:i
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import org.rut.util.algorithm.SortUtil; <tx`#,
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/** r(6$.zx
* @author treeroot h1AZ+9
* @since 2006-2-2 /c:78@
* @version 1.0 EYXHxo
*/ Yw_^]:~
public class BubbleSort implements SortUtil.Sort{ ^Ez`WP
!/RL.`!>
/* (non-Javadoc) QopA'm
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aF]cEe
*/ k(23Zt]
public void sort(int[] data) { UOYhz.
int temp; Rw!wfh_+
for(int i=0;i for(int j=data.length-1;j>i;j--){ I92orr1
if(data[j] SortUtil.swap(data,j,j-1); &cHA xker
} UsQh+W"?
} UrJrvx
} dp DPSI
} /k O
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} =Hf`yH\#
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选择排序: 15\k/[3
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package org.rut.util.algorithm.support; 5|_El/G
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import org.rut.util.algorithm.SortUtil; 3EO:Uk5<
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/** 'S#D+oF(1~
* @author treeroot w6&p4Jw/H?
* @since 2006-2-2 cl1>S 3
* @version 1.0 Or<OmxJg
*/ oj%(@6L
public class SelectionSort implements SortUtil.Sort { GX0S9s
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/* :xy4JRcF
* (non-Javadoc) `*-rz<G
* mGP&NOR0^y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %D6HY^]ayw
*/ Bh
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public void sort(int[] data) { wGhy"1g#
int temp; EaN1xb(DYa
for (int i = 0; i < data.length; i++) { @tzL4hy%^j
int lowIndex = i; h}&1
7M
for (int j = data.length - 1; j > i; j--) { bSgdVP-
if (data[j] < data[lowIndex]) { #Pr
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lowIndex = j; )y"8Bx=x4
} Gk-49|qIV
} VbfTdRD-
SortUtil.swap(data,i,lowIndex); hA:RVeS{
} O0RV>Ml'&
} 2qpUUo f
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} 2`P=ekF]
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Shell排序: Q nmv?YXS
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package org.rut.util.algorithm.support; ESi'3mbeC
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import org.rut.util.algorithm.SortUtil; #fT<]j(
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/** w
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* @author treeroot /v8yE9N_
* @since 2006-2-2 oxZXY]$y
* @version 1.0 kG>m(n
*/ s~>0<3{5
public class ShellSort implements SortUtil.Sort{ W'" p:Uhq
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/* (non-Javadoc) |* v w(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @ebSM#F?
*/ k@}g?X`8
public void sort(int[] data) { L =9^Y/8Q
for(int i=data.length/2;i>2;i/=2){ 2}0S%R(
for(int j=0;j insertSort(data,j,i); /vNHb_-
} '
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} hOj(*7__
insertSort(data,0,1); O/Mx$Q3re
} t
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R
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/** ,-`A6ehg
* @param data y134m
* @param j yt[*4gF4
* @param i [
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*/ jUGk=/*]e
private void insertSort(int[] data, int start, int inc) { =O??W8u
int temp; X|4_}b> x
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); vM?jm!nd
} "1z#6vw5a
} [ XBVES8
} Lhmb=
@
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} GZzBATx
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快速排序: 7p_B?r
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package org.rut.util.algorithm.support; RN"Ur'+
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import org.rut.util.algorithm.SortUtil; d^qTY?k.
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/** Uu0
* @author treeroot t{Wu5<F:
* @since 2006-2-2 )NmYgd~%
* @version 1.0 `h='FJ/!
*/ ;.{J>Q/U,
public class QuickSort implements SortUtil.Sort{ xz3|m
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/* (non-Javadoc) iyTKy+3A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'cPE7uNT
*/ !EOYqD
public void sort(int[] data) { @&f~#Xe
quickSort(data,0,data.length-1); E-v^eMWX
} Jxsch\
private void quickSort(int[] data,int i,int j){ |Ng}ZLBM
int pivotIndex=(i+j)/2; 89P'WFOFK
file://swap kzmw1*J
SortUtil.swap(data,pivotIndex,j); ,b9!\OWDF
J0FJ@@
int k=partition(data,i-1,j,data[j]); L XHDX
SortUtil.swap(data,k,j); h@jk3J9^
if((k-i)>1) quickSort(data,i,k-1); 7bY N
if((j-k)>1) quickSort(data,k+1,j); l?O%yf`s
)7 M
} q{uv?{I
/**
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* @param data 9w.ZXd
* @param i /|p6NK;8L
* @param j tqXCj}mR
* @return >~*}9y0$
*/ |-`-zo4z
private int partition(int[] data, int l, int r,int pivot) { E_-g<Cw
do{ z<OfSS_]R
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); irF+(&q]jh
SortUtil.swap(data,l,r); FZ5
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} Jvr`9<`
while(l SortUtil.swap(data,l,r); En{<
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return l; 5
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} ImsyyeY]
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} wxE'h~+
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改进后的快速排序: _18Aek
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package org.rut.util.algorithm.support; {sF;R.P&r
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import org.rut.util.algorithm.SortUtil; p9[gG\
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/** Q.g44>
* @author treeroot *T2kxN,Ik
* @since 2006-2-2 7Cx-yv
* @version 1.0 t/J|<Ooj?
*/ r#NR3_@9
public class ImprovedQuickSort implements SortUtil.Sort { sI`oz|$
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private static int MAX_STACK_SIZE=4096; l*b0uF
private static int THRESHOLD=10; @me ( pnD
/* (non-Javadoc) q0KGI/5s4+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bKQ_{cR
*/ F7\nG}#s
public void sort(int[] data) { 7_`_iymR
int[] stack=new int[MAX_STACK_SIZE]; C4K"eX,K
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int top=-1; "0m\y+%8
int pivot; $GQ{Ai:VwF
int pivotIndex,l,r; #:8V<rc^
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stack[++top]=0; FL[w\&fp
stack[++top]=data.length-1; Zb:S
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while(top>0){ glZjo
int j=stack[top--]; ld7B{ ?]
int i=stack[top--]; Nt~G
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pivotIndex=(i+j)/2; ;R7+6
pivot=data[pivotIndex]; UcWf
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SortUtil.swap(data,pivotIndex,j); +,UuJ6[n
/ !aVv
file://partition j`QXl
l=i-1; Sr+ &
r=j; \RmU6(;IQ
do{ &W%fsy<
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Id{Ix(O
SortUtil.swap(data,l,r); ~;@\9oPpz%
} rTzXRMv@o
while(l SortUtil.swap(data,l,r); QeQxz1
SortUtil.swap(data,l,j); T1c&3
B~`:?f9ny5
if((l-i)>THRESHOLD){ -#
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stack[++top]=i; ~vKDB$2
stack[++top]=l-1; /;WFRp.
} ;-VXp80J
if((j-l)>THRESHOLD){ H(DI /"N
stack[++top]=l+1; gH/(4h
stack[++top]=j; OySn[4`(i
} e?<$H\
&XB1=b5
} OQ+kOE&
file://new InsertSort().sort(data); lh-zE5;
insertSort(data); s:JQV
} G& @_,y|
/** R:U!HE8j
* @param data R]N"P:wf@
*/ Lv@'v4.({
private void insertSort(int[] data) { {;3a^K
int temp; 4YA1~7R
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !-tVt
D
} K}QZdN']
} @gi / 1 cq
} sPRs;to-
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} |z`AIScT
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归并排序: t]+h.
vlPViHF.
package org.rut.util.algorithm.support; 'h>CgR^NM1
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import org.rut.util.algorithm.SortUtil; }VqCyJu&{
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/** wj\kx\+
* @author treeroot \;0UP+
* @since 2006-2-2 }T"&4Rvs2R
* @version 1.0 2[1lwV
*/ 35Fs/Gf-n
public class MergeSort implements SortUtil.Sort{ 89ab?H}/
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/* (non-Javadoc) D YTC2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <1E5[9
q
*/ Z8o8>C\d9/
public void sort(int[] data) { 8i^d*:R
int[] temp=new int[data.length]; @UW*o&pGqL
mergeSort(data,temp,0,data.length-1); (#rhD}
} U?j[
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private void mergeSort(int[] data,int[] temp,int l,int r){ ]f*.C9Y
int mid=(l+r)/2; q}hHoSG]=
if(l==r) return ; JxlZ,FF$@
mergeSort(data,temp,l,mid); lz(}N7SLa
mergeSort(data,temp,mid+1,r); QoS]QY'bZ
for(int i=l;i<=r;i++){ zRgl`zREr
temp=data; N2&h yM
} K5 Z'kkOk
int i1=l; oEsqLh9a|
int i2=mid+1; M8|kmF\B
for(int cur=l;cur<=r;cur++){ 6o~CX
if(i1==mid+1) '19kP.
data[cur]=temp[i2++]; c> ":g~w
else if(i2>r) R
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data[cur]=temp[i1++]; yAu.=Eo7
else if(temp[i1] data[cur]=temp[i1++]; `A$zLqz)Vm
else `}#n#C)
data[cur]=temp[i2++]; P.kf|,8L
} b\C1qM4
} 4GexYDk'#
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} _s+_M+@et
cfL:#IM
改进后的归并排序: 3 H`ES_JL
.|GnTC q
package org.rut.util.algorithm.support; uk)D2.eS,
h`:B8+k
import org.rut.util.algorithm.SortUtil; 0f"la=6
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/** <'vtnz
* @author treeroot W=2#Q2)
* @since 2006-2-2 <4%PT2R
* @version 1.0 goc"+K
*/ Q`BB@E
public class ImprovedMergeSort implements SortUtil.Sort { cL:hjr"
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private static final int THRESHOLD = 10; -{Fy@$!
#z9@x}p5g
/* yOyuMZo6
* (non-Javadoc) Y|aaZ|+
* |],ocAN{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H~?p,h
*/ eI+p
public void sort(int[] data) { zJG=9C?
int[] temp=new int[data.length]; 5>&C.+A 9
mergeSort(data,temp,0,data.length-1); }c'T]h\S
} zX&wfE8T
XO}v8nWV
private void mergeSort(int[] data, int[] temp, int l, int r) { w s7LDY&(
int i, j, k; ~4M?[E&
int mid = (l + r) / 2; d*Kg_He-
if (l == r) _OJ19 Ry
return; TFtD>q X
if ((mid - l) >= THRESHOLD) R^Y_i
mergeSort(data, temp, l, mid); |4F'Zu}g>
else )0{ZZ-beG
insertSort(data, l, mid - l + 1); y@\J7 h:
if ((r - mid) > THRESHOLD) 2UEjn>2
mergeSort(data, temp, mid + 1, r); VP:9&?>G
else [\.@,Y0j
insertSort(data, mid + 1, r - mid); 7z3YzQ=Kg
(BY5omlh
for (i = l; i <= mid; i++) { pt~b=+bBm
temp = data; -{eI6#z|\A
} lNB<_SO
for (j = 1; j <= r - mid; j++) { .<.#g+
temp[r - j + 1] = data[j + mid]; 7DIFJJE'
} Mgg m~|9)
int a = temp[l]; )OV2CP
int b = temp[r]; AP(%m';
for (i = l, j = r, k = l; k <= r; k++) { I=&Kn@^
if (a < b) { 9l}G{u9a
data[k] = temp[i++]; nrCr9#
a = temp; 2w>yW]
} else { F^X:5g~K
data[k] = temp[j--]; &U
yQ<O>
b = temp[j]; ?V4bz2#!1O
} R<e ~Cb-
} pSS8 %r%S'
} "M=1Eb$6=
n<Z1i)
/** {'[S.r`
* @param data fk(h*L|sI
* @param l
@+!u{
* @param i w7yz4_:x^
*/ %#@5(_'
private void insertSort(int[] data, int start, int len) { h3P ^W(=&
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); $WG<
} :PQvt/-'(D
} zl!Y(o!@
} AR7]~+X
} *hkNJ
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堆排序: Wh1'?#
iKEHwm
package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; "j?\Ze*
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/** JI|MR#_u
* @author treeroot td(4Fw||1y
* @since 2006-2-2 RV_+-m{]
* @version 1.0 i"
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*/ j~k+d$a
public class HeapSort implements SortUtil.Sort{ v42Z&PO
L'<.#(|
/* (non-Javadoc) d`4F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U t.#h="
*/ 9M1 UkS$`@
public void sort(int[] data) { zAO|{m<A2
MaxHeap h=new MaxHeap(); hbE~.[Y2r
h.init(data); 3V@!}@y,F6
for(int i=0;i h.remove(); w*B4>FYg
System.arraycopy(h.queue,1,data,0,data.length); utBKl'`
} aui3Mq#f
(zIIC"~5
private static class MaxHeap{ f"0?_cG{%
OQh4MN#$
void init(int[] data){ XJZS}Z7h
this.queue=new int[data.length+1]; z9HUI5ns
for(int i=0;i queue[++size]=data; v?`DP
fixUp(size); kr>F=|R]
} TV*@h2C"i
} E{}Vi>@V?
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private int size=0; v_NL2eQ~
#lO~n.+P
private int[] queue; z;6,,
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public int get() { 0M|Jvw'n|
return queue[1]; Qs;MEt 1
} D4\
*
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public void remove() { yf2$HF
SortUtil.swap(queue,1,size--);
A!^gF~ 5
fixDown(1); y\c-I!6>26
} *e
*V%w~75
file://fixdown H:.l:PJ
private void fixDown(int k) { *#Hw6N0#
int j; \#q|.d$u
while ((j = k << 1) <= size) { U$^ $7g 3
if (j < size %26amp;%26amp; queue[j] j++; ;'4HR+E"
if (queue[k]>queue[j]) file://不用交换 ]j57Gk%z
break; w}r~Wk^dLI
SortUtil.swap(queue,j,k); B),Z*lpC
k = j; {x<yDDIv_
} 0:qR,NW^#
} xoyH5ZK@
private void fixUp(int k) { *{s
3.=P.
while (k > 1) { *1CZRfWI
int j = k >> 1; q1vsvL9Q
if (queue[j]>queue[k]) >!%F$$
break; 2~RG\JWTA
SortUtil.swap(queue,j,k); .Fm@OQr
k = j; #Hi$squJ
} Bf{c4YiF
} |}naI_Qudv
jRNDi_u?Wb
} )jHH-=JM
eD?f|bif
} &AhkP=Yw
zHk7!|%Y
SortUtil: TI}Y U
q@Oe}
package org.rut.util.algorithm; B):hm
{`=k$1
import org.rut.util.algorithm.support.BubbleSort; D);w)`
import org.rut.util.algorithm.support.HeapSort; J3,m{%EtNM
import org.rut.util.algorithm.support.ImprovedMergeSort; &~sirxR p
import org.rut.util.algorithm.support.ImprovedQuickSort; Pj{Y
import org.rut.util.algorithm.support.InsertSort; 22FHD4
import org.rut.util.algorithm.support.MergeSort; /L*JHNu"_
import org.rut.util.algorithm.support.QuickSort; .l +yK-BZ
import org.rut.util.algorithm.support.SelectionSort; >
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import org.rut.util.algorithm.support.ShellSort; ^~K[ bFbW
vnD `+y
/** sG8G}f
* @author treeroot pT'jX^BU
* @since 2006-2-2 OO*2>Qy~z
* @version 1.0 $#/f+kble
*/ ^s_7-p])(
public class SortUtil { `$i/f(t6`
public final static int INSERT = 1; ']DUCu
public final static int BUBBLE = 2; yNOoAnGT W
public final static int SELECTION = 3; +S
],){
public final static int SHELL = 4; >m#bj^F\
public final static int QUICK = 5; 9#b/D&pX5
public final static int IMPROVED_QUICK = 6; 55Ag<\7
public final static int MERGE = 7; ]1&}L^a
public final static int IMPROVED_MERGE = 8; _q=ua;I&
public final static int HEAP = 9; p}K.-S`MQ
%hCd*[Z}j
public static void sort(int[] data) { $c }-/U 8
sort(data, IMPROVED_QUICK); #8@o%%Fd
} .T\_4C
private static String[] name={ @23~)uiZa
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" R/Z
zmb{
}; d34BJ<
8ib%CYR
private static Sort[] impl=new Sort[]{ MkX=34oc^
new InsertSort(), }0~X)Vgm(
new BubbleSort(), 2VaKt4+`
new SelectionSort(), qA5 Ug
new ShellSort(), 3H,?ZFFGz
new QuickSort(), Ri;_
8v[H|
new ImprovedQuickSort(), Aqo90(jffx
new MergeSort(), r>cN,C
new ImprovedMergeSort(), &l?AC%a5
new HeapSort() 6o<(,\ad[
}; |(3"_
z#^;'nnw
public static String toString(int algorithm){ :s>x~t8g#n
return name[algorithm-1]; <d~si^*\ch
} ?tx."MZ
j9~lf
public static void sort(int[] data, int algorithm) { t[o_!fmxZ
impl[algorithm-1].sort(data); a6!|#rt
} t4Pi <m:7
D`3`5.b
public static interface Sort { FA!!S`{\
public void sort(int[] data); P(cy@P,D
} )W*A[c
2
#Fz/}lO
public static void swap(int[] data, int i, int j) { M.\V/OX
int temp = data; 4/AE;yX
data = data[j]; OxqkpK&
data[j] = temp; SVBo0wvz-
} UX%J?;g
} 45;ey }8