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。 N%&D(_
插入排序: Z'sO9Sg8>
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package org.rut.util.algorithm.support; 5Pl~du
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import org.rut.util.algorithm.SortUtil; nob^
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/** F
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* @author treeroot c;e2=
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* @since 2006-2-2 .8%mi'0ud
* @version 1.0 Q35/Sp[;x
*/ (e;9,~u)
public class InsertSort implements SortUtil.Sort{ P>t[35/1
U)N_/
/* (non-Javadoc) Tse
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Wd_cNR\
*/ #D{//P|;
public void sort(int[] data) { t7p`A8&
int temp; _}B:SM
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); R?Or=W)i
} |O]oX[~
} K9y!ZoB
} nC5
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} 8HLcDS#
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冒泡排序: b]h]h1~hHH
_8'F I_E3
package org.rut.util.algorithm.support; P2Ja*!K]
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import org.rut.util.algorithm.SortUtil; oGLSk(T&I
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/** )ccdfSe
* @author treeroot 4%I(Z'*Cx
* @since 2006-2-2 FT*
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* @version 1.0 jbqhNsTNK
*/ :oH"
public class BubbleSort implements SortUtil.Sort{ GBZx@B[TY
=R^V[zTn_
/* (non-Javadoc) $bU|'}QR
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t'EH_U
*/ &:` 7
public void sort(int[] data) { [lC*|4t&
int temp; "=W7=V8w
for(int i=0;i for(int j=data.length-1;j>i;j--){ f#p.=F$
if(data[j] SortUtil.swap(data,j,j-1); >, &6zj
} M#qZ0JT4
} *S.2p*Vd
} ^J>jU`)CJ
} 6#k
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} swVq%]')"
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选择排序: Dc[Qu?]LM
4>gMe3]0
package org.rut.util.algorithm.support; e.0vh?{\
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import org.rut.util.algorithm.SortUtil; wo[W1?|s
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/** q*ZjOqj
* @author treeroot {A(=phN
* @since 2006-2-2 By@<N [I@
* @version 1.0 +mP3y~|-j
*/ BcT|TX+ct
public class SelectionSort implements SortUtil.Sort { 1Ly?XNS
T!hU37g h?
/* 2f]9I1{
* (non-Javadoc) 2I'\o7Y
* O329Bkg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @Ey(0BxNu
*/ MWCP/~>a2
public void sort(int[] data) { >:s.`jV<
int temp; 'lv\I9"S)
for (int i = 0; i < data.length; i++) {
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int lowIndex = i; h.QKbbDj
for (int j = data.length - 1; j > i; j--) { zk4yh%Cd_
if (data[j] < data[lowIndex]) { HFx8v!^5N
lowIndex = j; '8>#`Yba
} UG+wRX :dA
} mV;Egm{A\
SortUtil.swap(data,i,lowIndex); d
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} Lvc*L6
} .J~iRhVOF
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} cJm!3X
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Shell排序: 8*)zoT*A
$Tq-<FbM)
package org.rut.util.algorithm.support; 2&]UFg:8Q
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import org.rut.util.algorithm.SortUtil; Gr#p QE2;
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/** ^G#=>&,
* @author treeroot A{;b^IK
* @since 2006-2-2 3u7E?*{sH
* @version 1.0 r}QW!^F
*/ ;=6++Oq
public class ShellSort implements SortUtil.Sort{ 8@/]ki`>
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/* (non-Javadoc) }qW%=;!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `2NL'O:
*/ 9\Mesf1$o
public void sort(int[] data) { ^<<( }3
for(int i=data.length/2;i>2;i/=2){ [(`T*c.#.X
for(int j=0;j insertSort(data,j,i); d?&?$qf[
} L"tj DAV
} ^?toTU
insertSort(data,0,1); _q=$L
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} c?eV8h1G
f b_tda",}
/** eF}Q8]da
* @param data .$4DK*
* @param j 5<a)SP 0
* @param i mw`%xID*
*/ !?ayZ5G([
private void insertSort(int[] data, int start, int inc) { #joU}Rj|
int temp; u3 ?+Hu|*T
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); OV>T}Fq
} VPn#O
} K~@-*8%
} ,vW.vq<{q3
*D,+v!wG9
} ; ZL<7tLDb
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快速排序: QKZm<lUL
X\
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package org.rut.util.algorithm.support; N(}7M~m>
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import org.rut.util.algorithm.SortUtil; ~?-U
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/** \p@,+ -gX
* @author treeroot ahS*YeS7
* @since 2006-2-2 L|6c lGp
* @version 1.0 JeUFCWm
*/ [4Glt>Nj>
public class QuickSort implements SortUtil.Sort{ F^T7u?^)
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/* (non-Javadoc) G+b $WQn2t
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @'R4zJ&+S
*/ u;&`_=p
public void sort(int[] data) {
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quickSort(data,0,data.length-1); <5[wP)K@
} \D, 0
private void quickSort(int[] data,int i,int j){ ,`/!0Wmt
int pivotIndex=(i+j)/2; ui G7
file://swap G~a/g6M4
SortUtil.swap(data,pivotIndex,j); yKOf]m>#
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int k=partition(data,i-1,j,data[j]); ?8! 4!P%n
SortUtil.swap(data,k,j); '/;#{("
if((k-i)>1) quickSort(data,i,k-1); z=>]E1'RL
if((j-k)>1) quickSort(data,k+1,j); A~nq4@uj
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} qg:1
/** cKF02?)TX
* @param data lUCdnp;w'
* @param i %~^R Iwm
* @param j 9eGM6qW\_
* @return SY <!-g<1F
*/ }
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private int partition(int[] data, int l, int r,int pivot) { A[ /0on5r
do{ '4dnC2a]
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 5
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SortUtil.swap(data,l,r); gA2\c5F<
} XV %L6x
while(l SortUtil.swap(data,l,r); [:g6gAuh,
return l; bMkn(_H)\
} +*)B;)P
)V)4N[?GC
} Q`AJR$L
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改进后的快速排序: A_Sl#e
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package org.rut.util.algorithm.support; }#EiL
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import org.rut.util.algorithm.SortUtil; RS<c&{?
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/** ./5|i*ow
* @author treeroot a2Q9tt>Q
* @since 2006-2-2 :7:Nx`D8
* @version 1.0 Ez<J+#)t
*/ ^"6xE nA]
public class ImprovedQuickSort implements SortUtil.Sort { tPC8/ntP8
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private static int MAX_STACK_SIZE=4096; c0!bn b
private static int THRESHOLD=10; :$/lGIz
/* (non-Javadoc) ;13lu1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (.%:Q0i1
*/ 7ou2SL}k
public void sort(int[] data) { |`qur5h`
int[] stack=new int[MAX_STACK_SIZE]; ?PyI#G
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m
int top=-1; [^ 7^&/0
int pivot; <&l3bL
int pivotIndex,l,r; A8c'CMEm
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stack[++top]=0; <po(7XB
stack[++top]=data.length-1; )]>=Uo
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~
while(top>0){ s'~_pP
int j=stack[top--]; qh F/iUE
int i=stack[top--]; Om>6<3n
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pivotIndex=(i+j)/2; kwGj7'
pivot=data[pivotIndex]; y<)Lr}gP
! ~&X1,l1*
SortUtil.swap(data,pivotIndex,j); gA~Ih
quGb;)3
file://partition bhe|q`1,E
l=i-1; 0Lc X7gU>
r=j; nV:.-JR
do{ v`y{l>r,
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); l4;/[Q>Z
SortUtil.swap(data,l,r); sHQe0"Eo
} {hg,F?p
'
while(l SortUtil.swap(data,l,r); CmJ*oXyi
SortUtil.swap(data,l,j); hs<7(+a
PcUi+[s;x
if((l-i)>THRESHOLD){ Fo?2nQ<
stack[++top]=i; [uAfE3
stack[++top]=l-1; /:yKa=$
} =\:YNP/
if((j-l)>THRESHOLD){ <ezvz..g
stack[++top]=l+1; 2!]':(8mR
stack[++top]=j; !WVF{L,/I
} ut-UTW
gyI5;il~
} =x/]2+
s
file://new InsertSort().sort(data); [2)Y0; ["
insertSort(data); a&XURyp
} !i)?j@D
/** %0:
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* @param data NwT3e&u%|
*/ dVO|q9 /
private void insertSort(int[] data) { @zd)]O]xH?
int temp; *e_ /D$SC
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <]CO}r
} O;qS3
} H1hj` '\"<
} ym(r;mj!
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} uo 7AU3\
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归并排序: T!v%NZj3
Bsz kQ>#6
package org.rut.util.algorithm.support; 3TtnLay.k
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import org.rut.util.algorithm.SortUtil; *]x]U >EF
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/** $qIMYX
* @author treeroot gtCd#t'(V
* @since 2006-2-2 i/)Uj-*G)
* @version 1.0 /7P4[~vw
*/ eW7;yH
public class MergeSort implements SortUtil.Sort{ D_@r_^}
q'K=Ly+
/* (non-Javadoc) x8zUGvtQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ f>p;Jh{2fn
public void sort(int[] data) { q ,}W.
int[] temp=new int[data.length]; Nv #vfh9}P
mergeSort(data,temp,0,data.length-1); (hd2&mSy
} 7z F29gC
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private void mergeSort(int[] data,int[] temp,int l,int r){ bS*
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int mid=(l+r)/2; K[T?--H
if(l==r) return ; zbi[r
mergeSort(data,temp,l,mid); Du[$6
mergeSort(data,temp,mid+1,r); j>?c]h{-
for(int i=l;i<=r;i++){ 4V<s"
temp=data; `+]4C+w
} BhdJ/C^
int i1=l; FeSe^ ^dW
int i2=mid+1; a8Ci 7<V
for(int cur=l;cur<=r;cur++){ oqUtW3y
if(i1==mid+1) g<}K^)x
data[cur]=temp[i2++]; [gH
vI
else if(i2>r) =<a`G3SY!
data[cur]=temp[i1++]; FS1<f:
else if(temp[i1] data[cur]=temp[i1++]; \7gLk:
else 9Z
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data[cur]=temp[i2++]; ;t"#7\
} bnUd !/;
} =3/||b4c
j<wg>O:s%r
} ` [@
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改进后的归并排序: QXgh[9wG
!:rQ@PSy9
package org.rut.util.algorithm.support; h7I_{v8
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import org.rut.util.algorithm.SortUtil; *>S\i7RET
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/** }2V|B4
* @author treeroot 3x'BMAA+
* @since 2006-2-2 *Swb40L^
* @version 1.0 b/5;377_
*/ rJ9a@n,
public class ImprovedMergeSort implements SortUtil.Sort { GaM#a[p
k gWF@"_
private static final int THRESHOLD = 10; rDUNA@r
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/* >8>`-
* (non-Javadoc) Qmzj1e$6x
* >!`T=(u!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e)7[weGN
*/ ,C(")?4aJ
public void sort(int[] data) { &``;1/J*W
int[] temp=new int[data.length]; _YO`x
mergeSort(data,temp,0,data.length-1); @ZD1HA,h"
} *vUKh^="
tY%c-m
private void mergeSort(int[] data, int[] temp, int l, int r) { zOWbdd_zl
int i, j, k; f:Ju20D
int mid = (l + r) / 2; @x"vGYKd
if (l == r) [S-NGip
return; rv:,Os_
if ((mid - l) >= THRESHOLD) $&k zix
mergeSort(data, temp, l, mid); vL\wA_z"<H
else XSn^$$S
insertSort(data, l, mid - l + 1); GfL}f9
if ((r - mid) > THRESHOLD) r$R(4q:
mergeSort(data, temp, mid + 1, r); (Dq3e9fX
else L;E9"7Jo
insertSort(data, mid + 1, r - mid); [
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for (i = l; i <= mid; i++) { 6-QTqb?U;N
temp = data; 1th|n
} >Y)jt*vQ
for (j = 1; j <= r - mid; j++) { FU5vo
temp[r - j + 1] = data[j + mid]; |UBR8
} !-LPFy>
int a = temp[l]; ]%ikr&78u
int b = temp[r]; 4+' yJ9~,B
for (i = l, j = r, k = l; k <= r; k++) { {u3^#kF
if (a < b) { :}e*3={4
data[k] = temp[i++]; )5Gzk&|
a = temp; 6_`x^[r
} else { GT<Y]Dk
data[k] = temp[j--]; H@,jNIh~h
b = temp[j]; Gvl-q1PVC
} X2q$i
} @M:j~
} {$oZR"MP
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/** V5qvH"^
* @param data &6r".\;^
* @param l Qh%7RGh_
* @param i ?f CLiK
*/ l J;wl|9
private void insertSort(int[] data, int start, int len) { L7%Dc2{^(
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); I zM =?,`
} 1LT)%_d@
} tiI>iP`!
} FzA_-d/_dg
} j#3}nJB%#i
^HX={(ddK
堆排序: >2vl & (
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package org.rut.util.algorithm.support; cC&R~h]|
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import org.rut.util.algorithm.SortUtil; kHm1aE<
dkLc"$(O
/** *N[.']#n
* @author treeroot O&E1(M|*>
* @since 2006-2-2 FFK79e/5
* @version 1.0 9k& lq$
*/ #O\4XZ,Lv
public class HeapSort implements SortUtil.Sort{ DIkD6n?V
:sk7`7v
/* (non-Javadoc) %:YON,1b=7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p_!Y:\a5
*/ \*v}IO>2})
public void sort(int[] data) { Ga+\b>C
MaxHeap h=new MaxHeap(); K>w}(td
h.init(data); +\\*Iy'xK
for(int i=0;i h.remove(); IP-CN
System.arraycopy(h.queue,1,data,0,data.length); ^qy$M>
} +2|X 7wA
)p(5$AR7
private static class MaxHeap{ \aU^c24>
K>,Kbs=D6
void init(int[] data){ Y%anR|
this.queue=new int[data.length+1]; zf5s\w.4
for(int i=0;i queue[++size]=data; !|}J{
fixUp(size); A5F< <
} 3@XCP-`
} 9kH~+
C>:F4"0
private int size=0; }8fxCW*|
ipw _AC~
private int[] queue; tA3]6SIK@
0$":W
public int get() { ](x4q
return queue[1]; G5kM0vs6L
} R^f~aLl
nwOr
public void remove() { |hiYV
SortUtil.swap(queue,1,size--); +}I[l,,xy
fixDown(1); 9K Ih}Q@P
} pvDr&n9
file://fixdown HJ !)D~M{
private void fixDown(int k) { zVGjXuNa
int j; 42Tjbten_u
while ((j = k << 1) <= size) { zi:GvTG
if (j < size %26amp;%26amp; queue[j] j++; \G#Qe*"'K
if (queue[k]>queue[j]) file://不用交换 r*0a43mC1
break; U@ALo
SortUtil.swap(queue,j,k); `(_cR@\
k = j; &:S_ewJK7
} N+"Y@X yg
} " 5synfO
private void fixUp(int k) { jE&kN$.7j
while (k > 1) { |Rhx&/
int j = k >> 1; .%U~ r2Y(
if (queue[j]>queue[k]) -EF(J
break; $io-<Z#Q
SortUtil.swap(queue,j,k); InH
R>,
k = j; cx_[Y
} =c(_$|0
} 4CW/
U#Wc!QN-t
} uQ vW@Tt
Gyjx:EM
} 5l=B,%s
pyT+ba#
SortUtil: Z,lUO.
":Kn@S'{(
package org.rut.util.algorithm; }2:bYpYQ
)gmDxD
^C
import org.rut.util.algorithm.support.BubbleSort; fB3O zff
import org.rut.util.algorithm.support.HeapSort; X']>b
import org.rut.util.algorithm.support.ImprovedMergeSort; _-o*3gmbQ
import org.rut.util.algorithm.support.ImprovedQuickSort;
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import org.rut.util.algorithm.support.InsertSort; +&4PGv53J
import org.rut.util.algorithm.support.MergeSort; E,c~.jYc
import org.rut.util.algorithm.support.QuickSort; f8#WT$Ewy
import org.rut.util.algorithm.support.SelectionSort; 6!n"E@Bwu
import org.rut.util.algorithm.support.ShellSort; L`R,4mI.W
CbQ@l@d]
/** bv\V>s
* @author treeroot xGk@BA=0<
* @since 2006-2-2 n{r+t=X
* @version 1.0 %,K |v
*/ V~Tjz%<
public class SortUtil { W ;P1T"*A
public final static int INSERT = 1; 'uo `-Y
public final static int BUBBLE = 2; u5H#(&Om
public final static int SELECTION = 3; } <2F]UuR
public final static int SHELL = 4; a_waLH/
public final static int QUICK = 5; }(ay(
public final static int IMPROVED_QUICK = 6; Te[[xhTyw
public final static int MERGE = 7; j /)cdP
public final static int IMPROVED_MERGE = 8; pEH[fA]
public final static int HEAP = 9; T5 5l-.>
)_GM&-
public static void sort(int[] data) { ]WWre},
sort(data, IMPROVED_QUICK); !Ya
+
} ~_8Ve\Y^ /
private static String[] name={ x3PeU_9
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Tb IM{X
}; ?9H7Twi+T
**_VNDK+
private static Sort[] impl=new Sort[]{ |GdA0y\v*}
new InsertSort(), +A~lPXAXW
new BubbleSort(), #xW%RF
new SelectionSort(), <j:3<''o
new ShellSort(), XhWMvme
new QuickSort(), l]sO[`X
new ImprovedQuickSort(), 4=o3ZRV
new MergeSort(),
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new ImprovedMergeSort(), {)4Vv`n
new HeapSort() F#X\}MvEU
}; ;f=:~go
.7ahz8v
public static String toString(int algorithm){ u+I-!3J87
return name[algorithm-1]; {@Diig
} )6bxP&k
sn5N9=\+T
public static void sort(int[] data, int algorithm) { Ct }"o
impl[algorithm-1].sort(data); hf:n!+,C
} &Eidc .
a(x[+ El
public static interface Sort { aCGPtA'
public void sort(int[] data); _9!Ru!u~
} k_P`t[YZV
M? [lpH3
public static void swap(int[] data, int i, int j) { JO :m:
M
int temp = data; 3C_g)5
_:
data = data[j]; )@R:$l86
data[j] = temp; }^`{YD
} Gk[P-%%b /
} .8b4