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。 +w/Ax[K
插入排序: ]lF'o&v]
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package org.rut.util.algorithm.support; :^SpKe(7
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import org.rut.util.algorithm.SortUtil; DYH-5yX7
/** Z*kGWL
* @author treeroot i:WHql"Kw_
* @since 2006-2-2 v@k62@;
* @version 1.0 ~?vm97l
*/ :~^ec|tp
public class InsertSort implements SortUtil.Sort{ )2oWoZvi9
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/* (non-Javadoc) DR9M8E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M[_~7~4
*/ xIF
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public void sort(int[] data) { zQ
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int temp; GI$t8{M
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); @+} Q<
} ) BTJs)E
} ]}9y>+>
} $B4}('&4FQ
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} N_L&!%s
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冒泡排序: wCBL1[~C
ja~b5Tf9
package org.rut.util.algorithm.support; @( 9#\%=
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import org.rut.util.algorithm.SortUtil; Wuosr3P
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/** 2 <&-
* @author treeroot MPO!qSS]
* @since 2006-2-2 VzpPopD,QW
* @version 1.0 V#!ypX]AB[
*/ Ii*v(`2b
public class BubbleSort implements SortUtil.Sort{ )?pin|_x
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/* (non-Javadoc) X3]E8)645N
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ok'0Byo
*/ )1j~(C)E8
public void sort(int[] data) { }QncTw0
int temp; 5"y
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for(int i=0;i for(int j=data.length-1;j>i;j--){ S#+G?I3w
if(data[j] SortUtil.swap(data,j,j-1); K4n1#]8i
} &tD`~
} ;k7` `
} ]Vl5v5_
} xbo-~{
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} Ph]e\
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选择排序: $EviGZFAaR
; Z61|@Y
package org.rut.util.algorithm.support; ]-%ZN+
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import org.rut.util.algorithm.SortUtil; vG\]xM'u
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/** 30>TxL=&
* @author treeroot Eg-b5Z);
* @since 2006-2-2 #Opfc8pm'
* @version 1.0 '[Oi_gE.
*/ AXPUJ?V
public class SelectionSort implements SortUtil.Sort { u{H,i(mx?
7L;yN..0
/* e^&YQl
* (non-Javadoc) um#;S;
* (fh:q2E#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ B[4y(Im
public void sort(int[] data) { 2y_rsu\
int temp; J-?\,N1R7
for (int i = 0; i < data.length; i++) { 1V+1i)+
int lowIndex = i; s^V8FH
for (int j = data.length - 1; j > i; j--) { }~QB2&3
if (data[j] < data[lowIndex]) { m1F<L
lowIndex = j; 5Tu#o()
} l`I]eTo)^
} .[2MPjg
SortUtil.swap(data,i,lowIndex); f[.hN
} -&,NM
} x0lX6
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} i'e^[oZ
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Shell排序: Z(as@gjH
c_ygwO3.Q
package org.rut.util.algorithm.support; }lpcbm
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import org.rut.util.algorithm.SortUtil; kOdS^-
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/** i6`8yw
* @author treeroot \|62E):i1
* @since 2006-2-2 87<y_P@{
* @version 1.0 mnmwO(.
*/ 1v2wP2]|;
public class ShellSort implements SortUtil.Sort{ sgX}`JH?z
<*(~x esPS
/* (non-Javadoc) p+8]H
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7vj[ AOq3l
*/ f6|3|
+
public void sort(int[] data) { &g& &-=7)
for(int i=data.length/2;i>2;i/=2){ =l7LEkR
for(int j=0;j insertSort(data,j,i); sM5 w~R>Y
} TdQ^^{SRp
} r]HLO'<]
insertSort(data,0,1); !%s7I^f*
} Z:/S@ry
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/** W^=89I4]
* @param data $\^]MxI
* @param j V'mpl
* @param i r`B+ KQ4
*/ e#nTp b
private void insertSort(int[] data, int start, int inc) { f2yv7t
T
int temp; =]zPUzr,|
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); --^D)n
} b%PVF&C9W
} }?fa+FQGp
} ~36c0 =
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} wj'iU&aca
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快速排序: ycE<7W
@nT8[v
package org.rut.util.algorithm.support; so8-e
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import org.rut.util.algorithm.SortUtil; aSF&^/j
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/** XdS<51 C
* @author treeroot $ 1dI
* @since 2006-2-2 |Q I3H]T7
* @version 1.0 X4k/7EA
*/ F_r eBPx
public class QuickSort implements SortUtil.Sort{ i@I %$!cB
ix#
/* (non-Javadoc) ,3n}*"K
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ffB]4
*/ xK
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public void sort(int[] data) { }jk^M|Z"Oz
quickSort(data,0,data.length-1); >{??/fBd-
} {(q Un
private void quickSort(int[] data,int i,int j){ Bhs`Y/Ls-
int pivotIndex=(i+j)/2; Wey\GQ`"8
file://swap 'PYl%2
SortUtil.swap(data,pivotIndex,j); 3)-#yOr
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int k=partition(data,i-1,j,data[j]); d:wAI|
SortUtil.swap(data,k,j); 5Y&@
:Y
if((k-i)>1) quickSort(data,i,k-1); (qG$u&
if((j-k)>1) quickSort(data,k+1,j); 4[-9$
r
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} =|#-Rm^YB
/** <n:?WP~U
* @param data }GC{~
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* @param i aLq;a
* @param j \bsm#vY,
* @return ibAA:I,d
*/ gU%GM
private int partition(int[] data, int l, int r,int pivot) { LtU+w*Gj
do{ :_H88/?RR
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); <'B^z0I,
SortUtil.swap(data,l,r); jCl[!L5/1
} TSk6Q'L\v
while(l SortUtil.swap(data,l,r); i:$g1
return l; .)GVb<w
} >mV""?r]
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} Cn<kl^!Q-
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改进后的快速排序: l^"G \ZVI
tp]|/cx4
package org.rut.util.algorithm.support; =@z"k'Vl`
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import org.rut.util.algorithm.SortUtil; a&[n Vu+
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/** onlyvH4
* @author treeroot /PCQv_Y&,/
* @since 2006-2-2 =e+go
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* @version 1.0 BdKwWgi+a
*/ `Q hh{
public class ImprovedQuickSort implements SortUtil.Sort { k$2Y)
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private static int MAX_STACK_SIZE=4096; xle29:?l
private static int THRESHOLD=10; ] QEw\4M?=
/* (non-Javadoc) F)IP~BE-k
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =3:ltI.'*I
*/ A^7!+1*K+
public void sort(int[] data) { 6{~I7!m"
int[] stack=new int[MAX_STACK_SIZE]; d]^i1
DI RCP=5
int top=-1; <f6Oj`{f4
int pivot; EGt)tI&
int pivotIndex,l,r; )?WoLEjq
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stack[++top]=0; WDZi
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stack[++top]=data.length-1; ]5\vYk
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while(top>0){ 'yNp J'
int j=stack[top--]; P:vy
int i=stack[top--]; O+N-x8W{
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pivotIndex=(i+j)/2; !jbjrzv9
pivot=data[pivotIndex]; T,fz/5w
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SortUtil.swap(data,pivotIndex,j); ]3C8
*8p</Q
file://partition GM/1ufZH
l=i-1; bsm,lx]bH^
r=j; qrkT7f
do{ [ n2udV
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); uz#9w\="
SortUtil.swap(data,l,r); cPbz7
} 5ZVTI,4K
while(l SortUtil.swap(data,l,r); k.ZfjX"
SortUtil.swap(data,l,j); -{h[W bf
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2+
if((l-i)>THRESHOLD){ ?2TH("hV$
stack[++top]=i; Z7^}G=*
stack[++top]=l-1; p"@|2a
} X`b5h}c
if((j-l)>THRESHOLD){ t/Fe"T[,V
stack[++top]=l+1; UU;:x"4
stack[++top]=j; z#4g,)ZX
} E'G>'cW;x
=-qsz^^a-
} /HRaX!|E#
file://new InsertSort().sort(data); x_K%
insertSort(data); ~ #CCRUhM
} )YFs
/** 1%,Z&@^j
* @param data =+p+_}C
*/ y6/X!+3+
private void insertSort(int[] data) { CkU=0mcY
int temp; q~n2VU4L*
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); g&>Hy!v,
} F?=u:
} <B`V
} 4lA+V,#
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} lI 1lP 1
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归并排序: zTLn*?
Sg-xm+iSDt
package org.rut.util.algorithm.support; |BW,pT
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import org.rut.util.algorithm.SortUtil; 3p4?-Dd|_$
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/** &}O!l'
* @author treeroot jvQ"cs$.
* @since 2006-2-2 dK: "
* @version 1.0 e`r;`a&
*/ s/M~RB!w
public class MergeSort implements SortUtil.Sort{ O 0#Jl8
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/* (non-Javadoc) __j8jEV
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UD{/L"GG
*/ 3;NRW+
public void sort(int[] data) { jhv1 D'>6
int[] temp=new int[data.length]; 1!3kAcBP
mergeSort(data,temp,0,data.length-1); U[l%oLra
} !\1 W*6U8;
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private void mergeSort(int[] data,int[] temp,int l,int r){ NrcCUZ .:N
int mid=(l+r)/2; LltguNM$
if(l==r) return ; pm\X*t}L
mergeSort(data,temp,l,mid); \BXVWE|
mergeSort(data,temp,mid+1,r); or}*tSKX
for(int i=l;i<=r;i++){ V%lGJ]ZEa
temp=data; :N*T2mP
} =joXP$n^
int i1=l; e6lOmgHn5
int i2=mid+1; K"7;Y#1g
for(int cur=l;cur<=r;cur++){ K/`RZ!
if(i1==mid+1) z :v, Vu
data[cur]=temp[i2++]; RFY!o<
else if(i2>r) -G#k/Rz6
data[cur]=temp[i1++]; sG2 3[t8
else if(temp[i1] data[cur]=temp[i1++]; 5Q` n6 x|
else (JW?azU
data[cur]=temp[i2++]; -P>=WZu
} :-La
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} 4rG 7\
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} *]R0z|MW
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改进后的归并排序: mndl~/
l-}5@D[
package org.rut.util.algorithm.support; RJwIN,&1.
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import org.rut.util.algorithm.SortUtil; "H<#91^|
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/** Z&jb,eh2
* @author treeroot '-33iG
* @since 2006-2-2 /;6@M=6u
* @version 1.0 0WE1}.J<
*/ ?7)(qnbe"
public class ImprovedMergeSort implements SortUtil.Sort { R2THL
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private static final int THRESHOLD = 10; {@__%=`CCS
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/* Lo5@zNt%W
* (non-Javadoc)
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*
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @B[Cc`IN"
*/ l/zC##1+.
public void sort(int[] data) { ) Zo_6%
int[] temp=new int[data.length]; 9,f<Nb(\
mergeSort(data,temp,0,data.length-1); 7G(f1Y
} V}fKV6 v9
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private void mergeSort(int[] data, int[] temp, int l, int r) { <3=qLm
int i, j, k; NLZZMr
int mid = (l + r) / 2; DnsP7k.8T
if (l == r) YQV?S
return; W^.-C
if ((mid - l) >= THRESHOLD) s%[GQQ-N
mergeSort(data, temp, l, mid); UXPegK!
else Wk#h,p3
insertSort(data, l, mid - l + 1); E8_Le
if ((r - mid) > THRESHOLD) R{uJczu
mergeSort(data, temp, mid + 1, r); s^YTI\L
\
else q%k(M[
insertSort(data, mid + 1, r - mid); a`b zFu{
RE
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for (i = l; i <= mid; i++) { |W*@}D
temp = data; %=9yzIjbAt
} uO@3vY',n
for (j = 1; j <= r - mid; j++) { D&l,SD
temp[r - j + 1] = data[j + mid]; UlNfI}#X
}
1Dya?}3
int a = temp[l]; B$TChc3B
int b = temp[r]; @ Rx6 >52>
for (i = l, j = r, k = l; k <= r; k++) { |4S?>e
if (a < b) { !Nl.Vb
data[k] = temp[i++];
'nWs0iH.
a = temp; 9/1+BQ
} else { p^igscPF6
data[k] = temp[j--]; \!JS7!+
b = temp[j]; .^~l_LkA
} 0vuKGjK
} r}0C8(oq
} AR~$MCR]"k
=v4r M0m,
/** >$naTSJq
* @param data 7ec0Xh1
* @param l p/k<wCm6
* @param i poQdI?ed,
*/ F|?+>c1}
private void insertSort(int[] data, int start, int len) { 9#&W!f*qO|
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); l^ 0_>R
} hzQ+9-qA
} q)V1{B@
} %U5P}
} xshArJ&A
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堆排序: Y62u%':X
Yn4)Zhkk
package org.rut.util.algorithm.support; ,<$YVXe/
#PslrA.
E
import org.rut.util.algorithm.SortUtil; ]A]Ft!`6z
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/** slge+xq\J
* @author treeroot %l:|2s:
* @since 2006-2-2 d]CviQUq
* @version 1.0 97Zk
P=Cq
*/ p:JRQT"A
public class HeapSort implements SortUtil.Sort{ hD6JW-
R+{^@M&
/* (non-Javadoc) Y@]);MyL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HkdN=q
*/ #7] o6
public void sort(int[] data) { -VWCD,c
MaxHeap h=new MaxHeap(); =_8
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h.init(data); @A2/@]H Bm
for(int i=0;i h.remove(); )WVItqQKV
System.arraycopy(h.queue,1,data,0,data.length); eu}Fd@GO
} B;GxfYj
T9z4W]T
private static class MaxHeap{ fW.GNX8
NtY*sUKRD
void init(int[] data){ \D,M2vC~G
this.queue=new int[data.length+1]; QB/7/PW{H\
for(int i=0;i queue[++size]=data; =a)iVXSB]
fixUp(size); I z}2
^
} [,<\RviI
} (Ffb&GL
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private int size=0; .-SF$U_P*a
5S%C~iB
private int[] queue; vuR5}/Ev
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public int get() { ~$4]HDg
return queue[1]; -`!_h[
} b JfD\
#
0GGc.
public void remove() { I9}+(6
SortUtil.swap(queue,1,size--); :tMre^oP
fixDown(1); R}DX(T,K
} x.b; +p}=
file://fixdown 'e.q
7Jpd
private void fixDown(int k) { w"cM<Ewu
int j; g7xbyBo7
while ((j = k << 1) <= size) { 8 7RHA $?
if (j < size %26amp;%26amp; queue[j] j++; 7qP4B9S
if (queue[k]>queue[j]) file://不用交换 oGm1d{_-O
break; 7E$eN8H
SortUtil.swap(queue,j,k); 3sZ,|,ueD
k = j; uAu( +zV2
} $gVLk.
} %z*29iKlI
private void fixUp(int k) { <ROpuY\!l
while (k > 1) { hZAG (Z
int j = k >> 1; f49"pTw7
if (queue[j]>queue[k]) <S]KaDu^
break; umQi
SortUtil.swap(queue,j,k); ?}vzLgp
k = j; -a
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} w`L~#yu
} yp=|7
pC*BA<?Rg
} ^ED"rMI
dh&W;zs
} 2m_'z
1"}B]5!
SortUtil: 8+"10q-
*(k%MTG
package org.rut.util.algorithm; i"L}!5
QU:EY'2
import org.rut.util.algorithm.support.BubbleSort; pT4qPta,2
import org.rut.util.algorithm.support.HeapSort; NEA_Plt
import org.rut.util.algorithm.support.ImprovedMergeSort; 79D=d'eA
import org.rut.util.algorithm.support.ImprovedQuickSort; E{uf\Fc
import org.rut.util.algorithm.support.InsertSort; !w q4EV
import org.rut.util.algorithm.support.MergeSort; 42fprt
import org.rut.util.algorithm.support.QuickSort; Q[M (Wqg
import org.rut.util.algorithm.support.SelectionSort; (lb6]MtTHY
import org.rut.util.algorithm.support.ShellSort; R6`*4zS
Sv7 i! j
/** Mx8Gu^FW.d
* @author treeroot On=u#DxQ
* @since 2006-2-2 DU;[btK>
* @version 1.0 I*Vt,JYx
*/ |/VL35b
public class SortUtil { Uz 0W <u3v
public final static int INSERT = 1; tpXa*6
public final static int BUBBLE = 2; SD?BM-&~
public final static int SELECTION = 3; BI};"y
public final static int SHELL = 4; `dDa}b
public final static int QUICK = 5; 2\VAmPG.Zs
public final static int IMPROVED_QUICK = 6; Yx5J$!Ld
public final static int MERGE = 7; !"Qb}g
public final static int IMPROVED_MERGE = 8; 7Rnm%8?T
public final static int HEAP = 9; F\5X7ditD
WSQ[.C
public static void sort(int[] data) { {O)YwT$`
sort(data, IMPROVED_QUICK); ]}kI)34/
} \yNQQ$B
private static String[] name={ lW
p~t
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" EY kj@
.,
}; wf?u(3/%
.(|+oHg<
private static Sort[] impl=new Sort[]{ BDy5J2<<7l
new InsertSort(), tQrS3Hz'nA
new BubbleSort(), .`,F
new SelectionSort(), Uo2+:p
new ShellSort(), Vvyj
new QuickSort(), MM#i t=u
new ImprovedQuickSort(), mzGjRl=O
new MergeSort(), 1?(cmXj
new ImprovedMergeSort(), *(G&B\
new HeapSort() ahA{B1M)n
}; -0$:|p?@^
7rcA[)<'
public static String toString(int algorithm){ ;K_}A4K
return name[algorithm-1]; eIg+PuQD]
} f])M04<
NPm;
public static void sort(int[] data, int algorithm) { 9JPEj-3`g
impl[algorithm-1].sort(data); ocF>LR%P
} jv =EheD
!EOQhh
public static interface Sort { mQ}Gh_'ps
public void sort(int[] data); kn}zgSO
} o@9+mM"B)
w?*z^y@
public static void swap(int[] data, int i, int j) { w$j{Hp6m
int temp = data; DzC Df@TB"
data = data[j]; 6\4Z\82
data[j] = temp; ~.Cv
DJy
} @RGDhwS47
} CbOCk:,g5