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。 .'Q*_};W
插入排序: WTM
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package org.rut.util.algorithm.support; ,4`Vl<6
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import org.rut.util.algorithm.SortUtil; 6 C
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/** Q4L=]qc T
* @author treeroot B$YoglEW:
* @since 2006-2-2 U<Qi`uoj!
* @version 1.0 <|.]$QSi
*/ EJMd[hMhe
public class InsertSort implements SortUtil.Sort{ u\=
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/* (non-Javadoc) n4M
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3e47UquZ
*/ at{p4Sl
public void sort(int[] data) { {.p;V
int temp; ?U[6X|1
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); %&VI-7+K
}
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} Y\WVkd(+G
} _-TW-{7bh
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} YVvE>1z
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冒泡排序: uDkX{<_Xe
r&B0-7r
package org.rut.util.algorithm.support; 6}Tftw$0z
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import org.rut.util.algorithm.SortUtil; _&U#*g
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/** d$x vEm
* @author treeroot (V&d:tW
* @since 2006-2-2 9}a$0H
h
* @version 1.0 ]\A=[T^
*/ zVf79UrK
public class BubbleSort implements SortUtil.Sort{ S]|sKY
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/* (non-Javadoc) d4ld-y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 64mD%URT
*/ G4P*U3&p
public void sort(int[] data) { \'[tfSB
int temp; VF";p^
for(int i=0;i for(int j=data.length-1;j>i;j--){ +Ek1~i.
if(data[j] SortUtil.swap(data,j,j-1); oF]]Pl{W
} I=
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} koS?UYF`
} QdcuV\B}
} &4} =@'G@
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} 42tZBz&
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选择排序: ILl~f\xG)
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package org.rut.util.algorithm.support; .{ljhE:
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import org.rut.util.algorithm.SortUtil; 2gkN\w6zQ
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/** \,X)!%6kZ
* @author treeroot !9YCuHj!p
* @since 2006-2-2 ma@V>*u
* @version 1.0 #qF1z}L(
*/ =Hn--DEMg
public class SelectionSort implements SortUtil.Sort { r)Lm| S
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/* 5p}j{f
* (non-Javadoc) _>;MQ)Km~
* $oM>?h_=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1L'Q;?&2H,
*/ 3RGmmX"?G
public void sort(int[] data) { @R%qP>_
int temp; IQtQf_"e1
for (int i = 0; i < data.length; i++) { kh=<M{-t
int lowIndex = i; p4k}B. f
for (int j = data.length - 1; j > i; j--) { X=abaKl
if (data[j] < data[lowIndex]) { ^,^MW
lowIndex = j; uM_ww6
} uKXD(lzX
} 4@Db $PHs
SortUtil.swap(data,i,lowIndex); U*\K<fw
} l4r>#n\yj
} s$fX
;
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} na~ FT[3C
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Shell排序: y9R%%i
.N.RpRz{f
package org.rut.util.algorithm.support; #-f9>S9_
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import org.rut.util.algorithm.SortUtil; |94o P>d
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/** D84&=EpVZ
* @author treeroot Q4LPi;{\
* @since 2006-2-2 ;zo|. YD
* @version 1.0 Sa9VwVUE
*/ MI(#~\Y~P
public class ShellSort implements SortUtil.Sort{ 0x5Ax=ut
j\bp#+
/* (non-Javadoc) 46e?%0(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G,$nq4
*/ : -#w
public void sort(int[] data) { uF}dEDB|;
for(int i=data.length/2;i>2;i/=2){ n&P~<2^M#
for(int j=0;j insertSort(data,j,i); %~M* <pN
} ;ZAwf0~
} Il*!iX|23<
insertSort(data,0,1); *U$]U0M
} <dD!_S6@,
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/** hbvcIGaT
* @param data '1b)(IW
* @param j R_+:nCB@,
* @param i ;UpJ_y)n8\
*/ GwP!:p|
private void insertSort(int[] data, int start, int inc) { WrDFbcH
int temp;
%!nN<%
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); d|Wqx7t]P
} ]*mUc`
} p o)lN[v
} ElB[k<
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} T"za|Fo
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快速排序: V-go?b`
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package org.rut.util.algorithm.support; |X A0F\
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import org.rut.util.algorithm.SortUtil; %(khE-SW
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/** m{RXt
* @author treeroot nM.g8d K
* @since 2006-2-2 [Z:P{yr
* @version 1.0 inO;Uwlv
*/ vw3[(_MV3_
public class QuickSort implements SortUtil.Sort{ ?G',Qtz<K
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/* (non-Javadoc) PcT]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `f&::>5tD
*/ a*X{hU9P
public void sort(int[] data) { =0EKrG
quickSort(data,0,data.length-1); O9By5j 4
} VPT?z
private void quickSort(int[] data,int i,int j){ SZr c-f_
int pivotIndex=(i+j)/2; [s]$&
file://swap ><"|>(y
SortUtil.swap(data,pivotIndex,j); ]k]bLyz\J
3>L5TYa
int k=partition(data,i-1,j,data[j]); }MMKOr(
SortUtil.swap(data,k,j); \ Xh
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if((k-i)>1) quickSort(data,i,k-1); )6p6<y
if((j-k)>1) quickSort(data,k+1,j); Nb ~J'"
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} zT&"rcT">
/** #>:S&R?2t
* @param data :nb|WgEc
* @param i EFVZAY"+!;
* @param j Et}%)M
* @return K{DmMi];I
*/ !=,zy
private int partition(int[] data, int l, int r,int pivot) { ] WYub1
do{ ?K2EK'-q
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); t~K[`=G\ex
SortUtil.swap(data,l,r); 5ta;C G
} 'do2n/
while(l SortUtil.swap(data,l,r); Uq'W<.v5
return l; S{e3aqT#N
} 3zKeN:w
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} iZnLgkk@
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改进后的快速排序: Gchs$^1`t
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package org.rut.util.algorithm.support; &W<9#RPK'
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import org.rut.util.algorithm.SortUtil; Lks+FW
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/** %2I>-0]B
* @author treeroot af@a /
* @since 2006-2-2 %Ul,9qG+
* @version 1.0 JK!`uG+v
*/ ~ PyS;L}
public class ImprovedQuickSort implements SortUtil.Sort { <aaT,J8%[
9fbbJ"I+
private static int MAX_STACK_SIZE=4096; ALF21e*n
private static int THRESHOLD=10; '#=n>
/* (non-Javadoc) EMr|#}]#s
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S`
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*/ <Bn0wr8)\
public void sort(int[] data) { /t]1_
int[] stack=new int[MAX_STACK_SIZE]; n>eDN\5
Y{dX[^[
int top=-1; 7n84`|=
int pivot; I`IW^eZM
int pivotIndex,l,r; {S9gOg
9=]HOUn
stack[++top]=0; [qRww]g;P|
stack[++top]=data.length-1; H7&y79mB
.*njgAq7
while(top>0){ \-6y#R-B
int j=stack[top--]; !h7:rv/
int i=stack[top--]; mIYKzu_k=
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pivotIndex=(i+j)/2; m)pHCS
pivot=data[pivotIndex]; [|eIax xR,
1
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SortUtil.swap(data,pivotIndex,j); >h#juO"
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file://partition lV^:2I/
l=i-1; :6t73\O
r=j; h;+O96V4.
do{ >TCit1yD
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); dO1m
SortUtil.swap(data,l,r); PDA9.b<q0
} E.NfVeq
while(l SortUtil.swap(data,l,r); RxJbQs$Ph
SortUtil.swap(data,l,j); [9Rh" H;h
UMd.=HC L
if((l-i)>THRESHOLD){ hN=kU9@knC
stack[++top]=i; C za}cF
stack[++top]=l-1; k`N*_/(|n
} ">1wPq&
if((j-l)>THRESHOLD){ M*3G
stack[++top]=l+1; 8Y RT0/V
stack[++top]=j; WR#h~N
9c
} zzI,iEG
9M9Fif.
} F#<:ZByjJ@
file://new InsertSort().sort(data); 2D"my]FnF
insertSort(data); qtZzJ>Y
} M$ieM[_T
/** *'aJO}$
* @param data ~b)X:ku
*/ >m1b/J3#
private void insertSort(int[] data) { "A~dt5GJ
int temp; &ot^+uVH
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); z5iCQ4C<
} lN5PKsGl
} leNX5 sX
} sB*dv06b0
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} F3!@|/<w
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归并排序: +<xQF
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package org.rut.util.algorithm.support; !=.y[Db=
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import org.rut.util.algorithm.SortUtil; YzZj=]\`b
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/** CckfoJ 9
* @author treeroot Sft
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* @since 2006-2-2 |-\anby<
* @version 1.0 DPW^OgL;
*/ L9Zz-Dr s
public class MergeSort implements SortUtil.Sort{ =GP L>a&
k CGb~+
/* (non-Javadoc) ATc!c +
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uQ[,^Ee&/
*/ 420K6[
public void sort(int[] data) { vD9.X}l]
int[] temp=new int[data.length]; 'J&R=MD
mergeSort(data,temp,0,data.length-1); jA:'P~`Hj
} P(8Yz W
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private void mergeSort(int[] data,int[] temp,int l,int r){ }E(w@&
int mid=(l+r)/2; (_}q>3
if(l==r) return ; B:v_5e\f@
mergeSort(data,temp,l,mid); !F}GSDDV*
mergeSort(data,temp,mid+1,r); ?F[_5ls|]
for(int i=l;i<=r;i++){ JLWm9c+UTG
temp=data; zJ8T.+qJ
} dT 7fyn
int i1=l; Wkk(6gS,
int i2=mid+1; 3)=ix. wW
for(int cur=l;cur<=r;cur++){ |-/@3gPO
if(i1==mid+1) L6nsVL&
data[cur]=temp[i2++]; F^Jz
else if(i2>r) k^K76m B
data[cur]=temp[i1++]; {*hFG:u
else if(temp[i1] data[cur]=temp[i1++]; 7)#JrpTj%
else #| gh
data[cur]=temp[i2++]; _8 K|2$X
} }eZ\~2
} Jg'#IM
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} 9$X" D
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改进后的归并排序: Sb2_&5
,Q Ge=Exn
package org.rut.util.algorithm.support; /[>_Ry,
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import org.rut.util.algorithm.SortUtil; &I'J4gk[
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/** { GCp5
* @author treeroot hTv*4J&@|
* @since 2006-2-2 ;DZj.|Sj+
* @version 1.0 rf+}J_
*/ S\I+UeFkf
public class ImprovedMergeSort implements SortUtil.Sort { 4PS|
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private static final int THRESHOLD = 10; 8kU(>' ^_:
l>
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/* i}>EGmv m
* (non-Javadoc) NqKeQezX
* 8|i<4>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y~^R^J
*/ $;ny`^8
public void sort(int[] data) { |p*cI @
int[] temp=new int[data.length];
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mergeSort(data,temp,0,data.length-1); d<OdQvW.
} qu$FpOJ
zD8$DG8
private void mergeSort(int[] data, int[] temp, int l, int r) { o\it]B
int i, j, k; #H Jlm1d
int mid = (l + r) / 2; Z&H_+u3j
if (l == r)
}8"i~>>a
return; 17l?li
if ((mid - l) >= THRESHOLD) pg,JYn
mergeSort(data, temp, l, mid); .sj/Lw}
else 3''Kg<k,I
insertSort(data, l, mid - l + 1); d?YSVmG
if ((r - mid) > THRESHOLD) sLTQm*jL
mergeSort(data, temp, mid + 1, r); qycf;Kl:6
else HXdo:#xEO
insertSort(data, mid + 1, r - mid); /u]#dX5
=$^}"}$
for (i = l; i <= mid; i++) {
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temp = data; ZK2&l8
} HtE^7i*_
for (j = 1; j <= r - mid; j++) { 438r]f?0|{
temp[r - j + 1] = data[j + mid]; DrBkR`a?
} jc>B^mqx
int a = temp[l]; Jk|DWZ
int b = temp[r]; o(v7&m;
for (i = l, j = r, k = l; k <= r; k++) { dKDCJt]t
if (a < b) { W>{&"
5
data[k] = temp[i++]; >N`,
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a = temp; 0%\fm W j
} else { }4c$_
data[k] = temp[j--]; 0?I
b = temp[j]; cyjgi /Z
} i[.7 8K-s
} 1v3
} EXW?)_pg
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/** Z!'kN\z
* @param data g?j^d:
* @param l "<&o;x<
* @param i #sv}%oV,F
*/ ib]<;t
private void insertSort(int[] data, int start, int len) { rfgsas{F
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); i6;rh-M?.
} /K+;HAUTn
} XCn;<$3w
} 7:$dl#
} 4RQ38%> >j
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堆排序: B<@a&QBTg
MScUrW!TA
package org.rut.util.algorithm.support; v33[Rk'
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import org.rut.util.algorithm.SortUtil; _ qQ
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/**
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* @author treeroot Qd?S~3XT
* @since 2006-2-2 fR2,NKM@
* @version 1.0 oc-o>H
*/ j~;y~Cx?
public class HeapSort implements SortUtil.Sort{ [P)](8nR[
5*B'e{C
/* (non-Javadoc) ^ 6t"A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Cf<TDjU`|
*/ xw1,Wbu]
public void sort(int[] data) { EW)r/Av:,
MaxHeap h=new MaxHeap(); kAxJ#RG
h.init(data); OWYY2&.h
for(int i=0;i h.remove(); B(-F|q\
System.arraycopy(h.queue,1,data,0,data.length); ~g~`,:Qc
} 0r&FH$
q7rX4-G$
private static class MaxHeap{ -/7@ A
\IR$~
void init(int[] data){ fv>Jn`
this.queue=new int[data.length+1]; * _,yK-et
for(int i=0;i queue[++size]=data; $K|2k7
fixUp(size); A>:31C
} zFwO(
} eo"XHP7ja
')fIa2dO/
private int size=0; }4Gn$'e
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private int[] queue; ]HG>Og
^#7&R"
public int get() { ~~ty9;KYL
return queue[1]; ^M1O)
} T?-K}PUcQ
7tY~8gQel
public void remove() { fX&g. fH
SortUtil.swap(queue,1,size--); Hu!<GB~
fixDown(1); B=%YD"FAv
} N,cj[6;T%
file://fixdown n2(\pQKm
private void fixDown(int k) { =G rg
int j; h{E9rc1,
while ((j = k << 1) <= size) { lg jY\?
if (j < size %26amp;%26amp; queue[j] j++; Lg6>\Z4
if (queue[k]>queue[j]) file://不用交换 7H[.o~\
break; 6SSrkj }U
SortUtil.swap(queue,j,k); ?Y$3R"p@3`
k = j; 23zR0z (L
} -]Oi/i, {
} wS:`c
J
private void fixUp(int k) { F2=#\U$
while (k > 1) { QVN@B[9
int j = k >> 1; $)(Zt^
if (queue[j]>queue[k]) @Z~0!VY
break; Ti5"a<R4m6
SortUtil.swap(queue,j,k); YdAC<,e&A
k = j; ".fnx8v,
} C2
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} `[f IK,
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} 7q^a@5f BG
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} sQY0Xys<4
Bq\WG=Fd
SortUtil: /9C>{29x!
jATN):8W
package org.rut.util.algorithm; 4+0:(=>[%
tpKQ$)ed
import org.rut.util.algorithm.support.BubbleSort; \88IFE
import org.rut.util.algorithm.support.HeapSort; @,q<][q
import org.rut.util.algorithm.support.ImprovedMergeSort; T:udw
import org.rut.util.algorithm.support.ImprovedQuickSort; N8]d0
import org.rut.util.algorithm.support.InsertSort; k%cT 38V*
import org.rut.util.algorithm.support.MergeSort; FBI^}^#_
import org.rut.util.algorithm.support.QuickSort; a^9}ceu?
import org.rut.util.algorithm.support.SelectionSort; &R}2/Mt
import org.rut.util.algorithm.support.ShellSort; /vFdhh
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/** 4*+)D8
* @author treeroot T(eNK
c2
* @since 2006-2-2 }nNCgH
* @version 1.0 3ry0.
*/ [UaM}-eR
public class SortUtil { Pexg"328
public final static int INSERT = 1; )G9,5[
public final static int BUBBLE = 2; Ob7F39):N
public final static int SELECTION = 3; 7ZpU -':
public final static int SHELL = 4; *s"{JrG`O
public final static int QUICK = 5; "V7 &@3
public final static int IMPROVED_QUICK = 6; 0-A@X>6bs
public final static int MERGE = 7; ).> O6A4:C
public final static int IMPROVED_MERGE = 8; ,N5-(W
public final static int HEAP = 9; +t;j5\HS
?-PW$p
public static void sort(int[] data) { |Ns[{/
sort(data, IMPROVED_QUICK); >c8EgSZJ
} >1d`G%KfG
private static String[] name={ ,7|2K &C5
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" r;&rc:?A
}; ;(9q, )
kA<58,!
private static Sort[] impl=new Sort[]{ Y-c_ 2 )
new InsertSort(), C+c;UzbD
new BubbleSort(), t[ ^68]
new SelectionSort(), @{UtS2L
new ShellSort(), 9.$k^|~
new QuickSort(), XhJbBVS|
new ImprovedQuickSort(), /*{s1Zcb
new MergeSort(), |<1
new ImprovedMergeSort(),
WJ$!W
new HeapSort() ukRbSJ5a5
}; "EC,#$e%ev
rQPV@J]:
public static String toString(int algorithm){ L(eLxw e%
return name[algorithm-1]; 4o*wLCo7^
} !BW6l)=L
cYp]zn+6
public static void sort(int[] data, int algorithm) { '0>w_ge4
impl[algorithm-1].sort(data); 2q.J1:lW
} &8uq5uKg
*J] }bX
public static interface Sort { '\.fG\xD
public void sort(int[] data); c2<JS:!*
} D>Dch0{H,:
1-60gI1)
public static void swap(int[] data, int i, int j) { 8!{F6DG
int temp = data; $17utJ58
data = data[j]; MHkTN
data[j] = temp; Kr'5iFK7
} oefhJM!y
} jO#5ZhG