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。 \0f{S40
插入排序: gjAIEI
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package org.rut.util.algorithm.support; )}?#
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import org.rut.util.algorithm.SortUtil; &mtJRfnu
/** HI11Jl}{
* @author treeroot WV_.Tiy<
* @since 2006-2-2 qCnZhJ
* @version 1.0 wGP;Vbk
*/ 6Z%U`,S
public class InsertSort implements SortUtil.Sort{ p ObX42
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/* (non-Javadoc) EG=Sl~~o
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H,u<|UMM_
*/ eF3,2DDC
public void sort(int[] data) { nPy$D-L,
int temp; _<OSqE
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); vG"=h%
} uD@#
} DS[#|
} n@,G8=J?
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}
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冒泡排序: EpX&R,Rxk
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package org.rut.util.algorithm.support; Y*vW!yu
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import org.rut.util.algorithm.SortUtil; %s(k_|G+4
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/** b7p@Dn?E
* @author treeroot
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* @since 2006-2-2 xe`
</
* @version 1.0 l.NEkAYPmH
*/ xM&Wgei]10
public class BubbleSort implements SortUtil.Sort{ 8Hn|cf0
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/* (non-Javadoc) @dPTk"P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K8UP,f2
*/ %*0^0wz
public void sort(int[] data) { U5.LDv;
int temp; /q`xCS
for(int i=0;i for(int j=data.length-1;j>i;j--){ V13N}]
if(data[j] SortUtil.swap(data,j,j-1); 70Wgg ty
} 5MtLT#C3r
} 5jgR4a*_v
} #nPQ!NB/
} &b%zQ4%d-`
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} /*X2c6<d
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选择排序: =aBctd:eX`
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package org.rut.util.algorithm.support; t~#zMUfac
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import org.rut.util.algorithm.SortUtil; sWc*5Rt
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/** "Pu!dJ5[]
* @author treeroot f>UXD
* @since 2006-2-2 Xy$3VU*
* @version 1.0 +>{Y.`a;Jo
*/ m0;CH/D0
public class SelectionSort implements SortUtil.Sort { P;ci9vk
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/*
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* (non-Javadoc) \Ani}qQ%|
* <4g{ fT0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ ~5CBEIF(NS
public void sort(int[] data) { uYs5f.! `
int temp; 65#'\+
for (int i = 0; i < data.length; i++) { 1]@}|
int lowIndex = i; C,ARXW1
for (int j = data.length - 1; j > i; j--) { \1fN0e
if (data[j] < data[lowIndex]) { \b?" b
lowIndex = j; vnM@QfN
} P;qN(2L/=<
} q#,f 4P
SortUtil.swap(data,i,lowIndex); /7|V+6jV
} ;
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} 6sx'S?Qa*
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} $JMXV
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Shell排序: S/e2P|}
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package org.rut.util.algorithm.support; %}Ss,XJ
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import org.rut.util.algorithm.SortUtil; ?&63#B,iZ
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/** CzRc%%BA
* @author treeroot XF;ES3 d
* @since 2006-2-2 Of[XKFn_
* @version 1.0 d9;g]uj`
*/ oPXkYW
public class ShellSort implements SortUtil.Sort{ o:3dfO%nuM
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/* (non-Javadoc) }dWq=)*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LE9(fe) fe
*/ ToXki,
public void sort(int[] data) { 1p/3!1
for(int i=data.length/2;i>2;i/=2){ V@cM |(
for(int j=0;j insertSort(data,j,i); 7b;I+q
} $m].8?
} 7Z\--=;|[:
insertSort(data,0,1); -- %N8L;e
} 7BK0}sxO
jY%na
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/** s/q7.y7n{
* @param data p~BRh
* @param j R3;Tk^5A
* @param i CohDO
*/ Rv$[)`&T
private void insertSort(int[] data, int start, int inc) { &U5{Hm9Ynr
int temp; _m
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for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); %.^_Ps0
} T_@K&<
} zMm#Rhn
} d%RC
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} rvbLyv;~
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快速排序: vY${;#~|
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package org.rut.util.algorithm.support; Nn~~!q
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import org.rut.util.algorithm.SortUtil; QS` PpyBkd
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/** E_])E`BJ
* @author treeroot 4E]l{"k<
* @since 2006-2-2 aWWU4xe
* @version 1.0 mKL<<L[
*/ Li/O
public class QuickSort implements SortUtil.Sort{ rV R1wsaL
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/* (non-Javadoc) 5Iy;oZ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K]s[5
*/ C":32_q
public void sort(int[] data) { JEahGzO
quickSort(data,0,data.length-1); F+,~v-
} }z _
private void quickSort(int[] data,int i,int j){ PE}:ybsX
int pivotIndex=(i+j)/2; l_P-j96WD
file://swap {*0<T|<n
SortUtil.swap(data,pivotIndex,j); ![YX]+jqNp
Xm%D><CC8"
int k=partition(data,i-1,j,data[j]); C&*oI =6
SortUtil.swap(data,k,j); VY;{/.Sa
if((k-i)>1) quickSort(data,i,k-1); pQ=>.JU
if((j-k)>1) quickSort(data,k+1,j); Y;@>b{s
1zm ulj%&
} Pe3@d|-,MU
/** XC0bI,Fu,
* @param data 4e~A1-
* @param i #A1Z'y0
* @param j ko.(pb@+
* @return R?~Yp?B^
*/ )0"wB
private int partition(int[] data, int l, int r,int pivot) { -Zf@VW,NI
do{ ;aI[=?<x
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 6*B1 9+-
SortUtil.swap(data,l,r); ?s\:hNNY
} 2N~Fg^xB
while(l SortUtil.swap(data,l,r); z3&]%Q&
return l; ewa wL"
} -(bXSBs#
=(NB%}
} -+ SF
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改进后的快速排序: QDs^Ije
Z:,U]Z(
package org.rut.util.algorithm.support; F(k.,0Nc
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import org.rut.util.algorithm.SortUtil; hAYTj0GZ
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/** v,
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* @author treeroot /<@SFF.
* @since 2006-2-2 *c~T@m~DR
* @version 1.0 !46RGU:I
*/ { /K.3
public class ImprovedQuickSort implements SortUtil.Sort { WN{ 9
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private static int MAX_STACK_SIZE=4096; Pz>s6 [ob
private static int THRESHOLD=10; R:e<W/P"
/* (non-Javadoc) hd>aZ"nm1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _/uFsYC
*/ PD&\LbuG
public void sort(int[] data) { u<3HQ.:;
int[] stack=new int[MAX_STACK_SIZE]; OMWbZ>jB
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int top=-1; rai3<_W<
int pivot; ROg(U8
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int pivotIndex,l,r; {["\.ZS|
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stack[++top]=0; pP*zq"o
stack[++top]=data.length-1; dx;Ysn0-
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while(top>0){ A?CcHw
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int j=stack[top--]; f!oT65Vmi
int i=stack[top--]; %+8F'&X
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pivotIndex=(i+j)/2; ,TXTS*V?
pivot=data[pivotIndex]; W3IpHV
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SortUtil.swap(data,pivotIndex,j); T*#/^%HSG
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file://partition ,4zmb`dP<
l=i-1; c_-drS
r=j; WFO4gB*
do{ }4Tc
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); AvxfI"sp
SortUtil.swap(data,l,r); 3HLNCt09
} (g[h
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c
while(l SortUtil.swap(data,l,r); : >6F+XZ
SortUtil.swap(data,l,j); MHh~vy'HB5
&y3OR1_Sm*
if((l-i)>THRESHOLD){ 0~ZFv Wv
stack[++top]=i; _d"b;4l
stack[++top]=l-1; eoai(&o0$
} (eCJ;%%k
if((j-l)>THRESHOLD){ }`W){]{kO
stack[++top]=l+1; J6U$qi
stack[++top]=j; *+j*{>E
} @x"0_Qw
LV\DBDM
} G B>QK
file://new InsertSort().sort(data); giZP.C"0
insertSort(data); +Vm}E0Ov
} 2q3+0Et8
/** r G4';V^q
* @param data MS\>DW
*/ K8>zF/# +
private void insertSort(int[] data) { BybW)+~
int temp; 85n1eE
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); D}dn.$
}
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} |?qquD 4=
} 62 O.?Ij
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} k"NVV$;
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归并排序: 3gv|9T
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package org.rut.util.algorithm.support; 99:C"`E{
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import org.rut.util.algorithm.SortUtil; oASY7k_3
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/** (iL|Sq&}b
* @author treeroot f!s=(H;
* @since 2006-2-2 1+9W+$=h2
* @version 1.0 |&FkksNAl\
*/ wQe_vY
public class MergeSort implements SortUtil.Sort{ JsDpy{q
W#KpPDgZE
/* (non-Javadoc) &?q/1vLa
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JBJhG<J
*/ W_kHj}dj,p
public void sort(int[] data) { =bHD#o|R
int[] temp=new int[data.length]; `glBV`?^
mergeSort(data,temp,0,data.length-1); a4XU?-sUh
} ^:#D0[
h{ AII
private void mergeSort(int[] data,int[] temp,int l,int r){ >sK!F$
int mid=(l+r)/2; ;?8_G%va
if(l==r) return ; tS|(K=$
mergeSort(data,temp,l,mid); xYmxc9)2
mergeSort(data,temp,mid+1,r); Wn(6,MDUN
for(int i=l;i<=r;i++){ kO|L bQ@=q
temp=data; bsB*533
} :/Q
int i1=l; ,wIONDnLZ
int i2=mid+1; )xbHCoU,
for(int cur=l;cur<=r;cur++){ MrDc$p W G
if(i1==mid+1) AQ_|:
data[cur]=temp[i2++]; 73xAG1D$r
else if(i2>r) +tVaBhd!
data[cur]=temp[i1++]; MFb9H{LA
else if(temp[i1] data[cur]=temp[i1++]; ;~"FLQg@
else Wzw7tLY._
data[cur]=temp[i2++]; rd9e \%A
} =K6($|'=
} MhR:c7,
ig/%zA*Bo
} .Yf:[`Q6g
Z/t+8;TMR,
改进后的归并排序: (>r[-Bft
Cq%IE^g<
package org.rut.util.algorithm.support; pov)Z):}G<
gLy&esJl1
import org.rut.util.algorithm.SortUtil; #wV8X`g
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/** NdzSz]q}
* @author treeroot ;`^WGS(3.%
* @since 2006-2-2 kP-3"ACG
* @version 1.0 7PtN?;rP
*/ ;\=M;Zt
public class ImprovedMergeSort implements SortUtil.Sort { zxC#0@qX07
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private static final int THRESHOLD = 10; LN@F+CyDc
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/* 1`a5C.v
* (non-Javadoc) C!fMW+C@
* \3pc"^W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H[S%J3JI
*/ qYlhlHD
public void sort(int[] data) { paKSr|O
int[] temp=new int[data.length]; fpFhn
mergeSort(data,temp,0,data.length-1); cNM3I,o7
} Y?(r3E^x
pKit~A,Q
private void mergeSort(int[] data, int[] temp, int l, int r) { S/4^ d &Gr
int i, j, k; 0cJWJOj&
int mid = (l + r) / 2; yuat" Pg
if (l == r) @te!Jgu{
return; .=X}cJ]`[
if ((mid - l) >= THRESHOLD) uf&myV7
mergeSort(data, temp, l, mid); [%77bv85.G
else x
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insertSort(data, l, mid - l + 1); ,u`B<heoLU
if ((r - mid) > THRESHOLD) "4uS3h2r
mergeSort(data, temp, mid + 1, r); $`)/0{qY-
else ug+io mZ
insertSort(data, mid + 1, r - mid); MLRK74D
xwJH(_-
for (i = l; i <= mid; i++) { :}@g6
temp = data; E0MGRI"me
} _nbBIaHN{
for (j = 1; j <= r - mid; j++) { `C$:Yf]%nG
temp[r - j + 1] = data[j + mid]; f;1K5Y
}
@I_8T$N=
int a = temp[l]; =8; {\
int b = temp[r]; aC%m- m
for (i = l, j = r, k = l; k <= r; k++) { uF1~FKB
if (a < b) { D"ND+*Q[X
data[k] = temp[i++]; b\-&sM(W"
a = temp; f]JM /
} else { K }Vv4x1U
data[k] = temp[j--]; rL+!tH
b = temp[j]; ]3KhgK%c8
} CS==A57I
} li0i"
} ]>~)<
M;p
em<
/** @8;W \L$~1
* @param data /J:bWr
* @param l BV>\ McI+
* @param i .pN`;*7`
*/ PDrZY.-
private void insertSort(int[] data, int start, int len) { =gJb^
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for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ,'p2v)p^4
} \H=&`?
} !+L/Khw/C
} iy 14mh\ ~
} ?i06f,-
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堆排序: rmE" rf
@>E2?CV
package org.rut.util.algorithm.support; 11<KpxKpk
Bh=u|8yxc
import org.rut.util.algorithm.SortUtil; }T%}wdj
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/** ~ ; -! n;
* @author treeroot B:!W$<
* @since 2006-2-2 Z(Bp 0a
* @version 1.0 ~[\_N\rm
*/ jC7&s$>Q"g
public class HeapSort implements SortUtil.Sort{ IFDZfx
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ZA
/* (non-Javadoc) BI $
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m3mp/g.>
*/ !!`!|w
public void sort(int[] data) { :j]vf8ec
MaxHeap h=new MaxHeap(); l&?}hq^'Dn
h.init(data); [$ejp>'Ud
for(int i=0;i h.remove(); |b|&XB_<]Z
System.arraycopy(h.queue,1,data,0,data.length); )*,5"CO
} k[HAkB \{
tb$LriN
private static class MaxHeap{ brdmz}
0 0M@
void init(int[] data){ `.x
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this.queue=new int[data.length+1]; A@sZ14+f
for(int i=0;i queue[++size]=data; |m80]@>
fixUp(size); R
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} ,B0_MDA +
} ^Nmg07_R
A` AaTP
private int size=0; Dg}
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D,g1<:<
private int[] queue; nSkPM5\TI
jSwf*u
public int get() { o]p|-<I Q
return queue[1]; |Tm!VFd
} pGK;1gVj
DBCK2PlJ
public void remove() { Sp^9&^
SortUtil.swap(queue,1,size--); "V$Bnz\n
fixDown(1); `g6h9GC6
} uvV;Mlo]
file://fixdown v0YG,)_
private void fixDown(int k) { R8T]2?Q1
int j; '*k'i;2/1
while ((j = k << 1) <= size) { !X<~-G2)l
if (j < size %26amp;%26amp; queue[j] j++; mGGsB5#w>
if (queue[k]>queue[j]) file://不用交换 T9u <p=p
break; QNxl/y\l0
SortUtil.swap(queue,j,k); $.GOZqMs
k = j; <]b7ZF]
} a)#1{JaoY
} FDv+*sZ
private void fixUp(int k) { ijdXU8
while (k > 1) { <F.Tx$s
int j = k >> 1; JGH60|
if (queue[j]>queue[k]) DNj"SF(J
break; WN_pd%m
SortUtil.swap(queue,j,k); Hx\H $Y
k = j; h<SQL97N
} Ko/ I#)
} ]sGHG^I6
K%X^n>O7C
} D*YM[sN`
aN $}?
} h?FmBK'BAd
L[20m(6?
SortUtil: qq1 - DG
mBG=jI "xh
package org.rut.util.algorithm; BYo/57&:
nYa*b=[.
import org.rut.util.algorithm.support.BubbleSort; -atGlu2
import org.rut.util.algorithm.support.HeapSort; _Jt 2YZdA
import org.rut.util.algorithm.support.ImprovedMergeSort; hwIMn33
import org.rut.util.algorithm.support.ImprovedQuickSort; j~e;DO
import org.rut.util.algorithm.support.InsertSort; OKvPL=~
import org.rut.util.algorithm.support.MergeSort; S:x?6IDPC^
import org.rut.util.algorithm.support.QuickSort; f}@jFhr'<
import org.rut.util.algorithm.support.SelectionSort; (<Th=Fns?
import org.rut.util.algorithm.support.ShellSort; =pk)3<GwF
<@Fy5k-%.
/** N]<!j$pOz
* @author treeroot L
* @since 2006-2-2 ~2zMkVH
* @version 1.0 0sh/|`\
*/ wu4NLgkE
public class SortUtil { NSFs\a@1
public final static int INSERT = 1; ~~6^Sh60g
public final static int BUBBLE = 2; yGsz2T;w
public final static int SELECTION = 3; B-T/V-c7
public final static int SHELL = 4; _"#!e{N|
public final static int QUICK = 5; V2<?ol
public final static int IMPROVED_QUICK = 6; \#>T~.Y7K
public final static int MERGE = 7; /g$G_}
public final static int IMPROVED_MERGE = 8; -#Z
bR
public final static int HEAP = 9; `St.+6^J
fS"Hr 0
public static void sort(int[] data) { W5' 3$,X9
sort(data, IMPROVED_QUICK); .]9c /
} T1r3=Y4
private static String[] name={ jh.@-
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" kee|42E
}; f7 'q-
D Kw*~0
private static Sort[] impl=new Sort[]{ j$7Xs"
new InsertSort(), F|HJH"2*&q
new BubbleSort(), 6O22P?v
new SelectionSort(), \J6hI\/4^
new ShellSort(), |/|
new QuickSort(), `WOYoec
new ImprovedQuickSort(), yj$TPe_BW
new MergeSort(), ,.o<no
new ImprovedMergeSort(), brZ sAQ+k
new HeapSort() S#-tOjU*
}; F5 ]C{
Z-B%'/.
public static String toString(int algorithm){ v*qQ? S
return name[algorithm-1]; u^j {U}
} MCP "GZK6W
`W-&0|%Ta
public static void sort(int[] data, int algorithm) { [*Z`Kc
impl[algorithm-1].sort(data); ,=
&B28Qe)
} n
8pt\i0
_6Eu2|vM&
public static interface Sort { 7'-j%!#w
public void sort(int[] data); !gmH$1w
} kGUJ9Du
fof2
xcH!
public static void swap(int[] data, int i, int j) { Ol')7d&
int temp = data; C P3<1~
data = data[j]; uyF|O/FC
data[j] = temp; \)48904^
} 0liR
} x#N-&baS