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。 qb>ULP0
插入排序: M2Q,&>M
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package org.rut.util.algorithm.support; ;aQ``B
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import org.rut.util.algorithm.SortUtil; omE- c
/** KC;cu%H
* @author treeroot I&-r^6Yx
* @since 2006-2-2 dq93P%X24
* @version 1.0 3^8Cc(bk
*/ 4]o+)d.`(
public class InsertSort implements SortUtil.Sort{ Y'U1=w~E
W!{RJWe
/* (non-Javadoc) D<WnPLA$g
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :[0 R F^2}
*/ l5 9a3=q
public void sort(int[] data) { F0$w9p
int temp; M(X
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); wQ33Gc
} )qy?x7
} bP18w0>,
} ,`geOJn'
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} U,g8:M
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冒泡排序: 1 Pk+zBJ$
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package org.rut.util.algorithm.support; BH:A]#_{
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import org.rut.util.algorithm.SortUtil; u/=hueR<^
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/** $DHE%IN`
* @author treeroot 9c@M(U@Yh
* @since 2006-2-2 w;'XqpP$*|
* @version 1.0 ~?\U];l
*/ q?!HzZ
public class BubbleSort implements SortUtil.Sort{ $nt&'Xnv
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/* (non-Javadoc) h>pu^ `hk
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :-?ZU4)
*/ Tg{5%~L]
public void sort(int[] data) { Q yqOtRk
int temp; Kd:l8%+
for(int i=0;i for(int j=data.length-1;j>i;j--){ En\@d@j<u
if(data[j] SortUtil.swap(data,j,j-1); r=Xo; d*TE
} ;,77|]<XE
} Oiib2Ov
}
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} ~1O|4mssS
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} =u2 z3$
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选择排序: orjtwF>^
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package org.rut.util.algorithm.support; sxT&T=7
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import org.rut.util.algorithm.SortUtil; cL9gaD$;)
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/** 5*44QV
* @author treeroot MG?,,8s O
* @since 2006-2-2 m)A:w.o
* @version 1.0 ;@Zuet
*/ <$s6?6P
public class SelectionSort implements SortUtil.Sort { 5]&sXs
}O\IF}X
/* i:s=
* (non-Javadoc) _r:Fmn_%-
* ZID- ~
6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 48:xvTE?N
*/ )U~|QdZ
public void sort(int[] data) { %9cT#9!7
int temp; cKTjQJ#
for (int i = 0; i < data.length; i++) { Ta\F~$M
int lowIndex = i; u8c@q'_
for (int j = data.length - 1; j > i; j--) { }ny7LQ
if (data[j] < data[lowIndex]) { #B\s'j[A"
lowIndex = j; 2"D4q (@
} k
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} toGiG|L
SortUtil.swap(data,i,lowIndex); w[X-Q+7p(t
} }u;K<<h:
} x,C8):\t`B
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} %`i*SF(gV
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Shell排序: [H*JFKpx
Y%;J/4dd
package org.rut.util.algorithm.support; .Y6v#VI
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import org.rut.util.algorithm.SortUtil; e]VW\6J&
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/** Bz/ba *
* @author treeroot 7(}'jZ
* @since 2006-2-2 Y"lEMY
* @version 1.0 PhyIea
*/ 35l%iaj]G5
public class ShellSort implements SortUtil.Sort{ /ZyMD(_J
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/* (non-Javadoc) DQGrXMpV0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sJL Oz>
*/ u\ _yjv#
public void sort(int[] data) { e|oMbTZ5m
for(int i=data.length/2;i>2;i/=2){ {D[6=\F
for(int j=0;j insertSort(data,j,i); k9%o{Uzy
} t`B@01;8A
} T +vo)9w
insertSort(data,0,1); x'g4DYl
} -J3~j kf
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/** %*Ex2we&
* @param data f-18nF7{
* @param j H=@KlSC^
* @param i 3YMqp~4
*/ sT;wHtU
private void insertSort(int[] data, int start, int inc) { Y\9}LgIvr
int temp; pVc+}Wzh
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Qs\a&Q=0H
} q=pRe-{
} e*Wk;D&
} x*H#?.E
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} =!t;e~^8]
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快速排序: 5,
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package org.rut.util.algorithm.support; %tP*_d:
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import org.rut.util.algorithm.SortUtil; Ry>y
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/** yx Om=V
* @author treeroot 8xENzTR
* @since 2006-2-2 ^2-
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* @version 1.0 WO.u{vW]'
*/ l7g'z'G
public class QuickSort implements SortUtil.Sort{ ~vA{I%z5~
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/* (non-Javadoc) \2kLj2!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &%rM|
*/ l Xa/5QKC
public void sort(int[] data) { wF`Y
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quickSort(data,0,data.length-1); *b>RUESF
} t.8r~2(?
private void quickSort(int[] data,int i,int j){ V22z-$cb
int pivotIndex=(i+j)/2; sQ`G'<!
file://swap 6C
VH)=%
SortUtil.swap(data,pivotIndex,j); dGp7EB`
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int k=partition(data,i-1,j,data[j]); "r46Rfa
SortUtil.swap(data,k,j); @ZU$W9g
if((k-i)>1) quickSort(data,i,k-1); 42]7N3:'
if((j-k)>1) quickSort(data,k+1,j); #_.JkY
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} E[t0b5h
/** 2
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* @param data cCZp6^/<x
* @param i y7hDMQ c'
* @param j >$'z4TC\T
* @return d%|l)JF*5
*/ v82wnP-~7
private int partition(int[] data, int l, int r,int pivot) { =sk[I0W
do{ ~1+6gG
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); U5kKT.M
SortUtil.swap(data,l,r); ['o ueOg
} 94-BcN
while(l SortUtil.swap(data,l,r); vu0Ue
return l; :e7\z
} <-k!
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} dCi:@+z8
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改进后的快速排序: o=R(DK# U
R`<^/h
package org.rut.util.algorithm.support; b;b,t0wS
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import org.rut.util.algorithm.SortUtil; 5;}W=x^$a
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/** 0S4BV%7F
* @author treeroot R1H^CJ=v0
* @since 2006-2-2 *#YZm>h
* @version 1.0 U1r]e%df)
*/ d 5yEgc;z
public class ImprovedQuickSort implements SortUtil.Sort { mxqD'^n#
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private static int MAX_STACK_SIZE=4096; @#4-4.6I<x
private static int THRESHOLD=10; 2yK">xYY@
/* (non-Javadoc) ]^C 8Oh<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1_TuA(
*/ i3,.E]/wX@
public void sort(int[] data) { KZjh<sjX|
int[] stack=new int[MAX_STACK_SIZE]; ~bZ=]i
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int top=-1; gQr+~O
int pivot; g$s;;V/8e
int pivotIndex,l,r; -~{Z*1`,
O#U maNj/
stack[++top]=0; ."+lij=56
stack[++top]=data.length-1; 8)0]cX
0:v!'
while(top>0){ n.+'9Fj
int j=stack[top--]; wS}c\!@<,
int i=stack[top--]; LH4A!a]
:$"{-n
pivotIndex=(i+j)/2; Y_CVDKdcY
pivot=data[pivotIndex]; ~Y x_ 3
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SortUtil.swap(data,pivotIndex,j); mU-2s%X<.^
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file://partition tkctwjD
l=i-1; T2Yf7Szp
r=j; 4Et(3[P71
do{ [1vm~w'
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); g.&B8e
SortUtil.swap(data,l,r); Q!P%duO
} ZK]qQrIwy
while(l SortUtil.swap(data,l,r); {J==y;dK
SortUtil.swap(data,l,j); Bg]VaTm[=
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if((l-i)>THRESHOLD){ ^^V3nT2rR3
stack[++top]=i; vb=]00c
stack[++top]=l-1; R@K\
} D<J'\mo
if((j-l)>THRESHOLD){ 8lV:-"+5
stack[++top]=l+1; |E >h*Y
stack[++top]=j; K+`GVmD
} WhW}ZS'r
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} aLh(8 ;$
file://new InsertSort().sort(data); iI<c
insertSort(data); .u)KP*_
} Gk~aTO
/** r)|~Rs!y,
* @param data LWM<[8wJ4
*/ T!H(Y4A
private void insertSort(int[] data) { } [#8>T
int temp; NIQ}A-b
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Z^V;B _
} DKS1Sm6d0
} 3 ZOD2:(
} H=BI%Z
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} IMWt!#vuY
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归并排序: Ixn|BCi60A
ytY\&m
package org.rut.util.algorithm.support; ZhY{,sy?QO
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import org.rut.util.algorithm.SortUtil; 5}G_2<G
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/** MZ"V\6T]
* @author treeroot 6>)fNCe`
* @since 2006-2-2 h A ){>B<;
* @version 1.0 E.*hY+kGZ
*/ SPV+ O{
public class MergeSort implements SortUtil.Sort{ '^)'q\v'k
k)3N0]q6
/* (non-Javadoc) :\~>7VFg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Doc zQc-U+
*/ }K) AjZ
public void sort(int[] data) { %$ya>0?mq
int[] temp=new int[data.length]; 1e[?}q]*
mergeSort(data,temp,0,data.length-1); 8~(,qU8- N
} \r
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private void mergeSort(int[] data,int[] temp,int l,int r){ ,&,%B|gT]
int mid=(l+r)/2; ) 'xyK
if(l==r) return ; *R+M#l9D`
mergeSort(data,temp,l,mid); 1<vJuF^
mergeSort(data,temp,mid+1,r); W%+02_/)
for(int i=l;i<=r;i++){ -dovk?'Gj
temp=data; DPf].i#
} cI[i v
int i1=l; .h
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int i2=mid+1; fcdXj_u
for(int cur=l;cur<=r;cur++){ G
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if(i1==mid+1) &n| <NF
data[cur]=temp[i2++]; |y7TYjg6
else if(i2>r) ,C6(
data[cur]=temp[i1++]; N[Xm5J
else if(temp[i1] data[cur]=temp[i1++]; +}m`$B}mJ
else l0G{{R0Y
data[cur]=temp[i2++]; qK$O /g,
} P.>fkO1\
} DTC
IVLV
YQD`4ND
} X}'rPz\Lu
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改进后的归并排序: _kBmKE
n}Z%-w$K#
package org.rut.util.algorithm.support; P\dfxR;8%
BW;@Gq@N
import org.rut.util.algorithm.SortUtil; #!_4ZX
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,
/** ,$!fyi[;C
* @author treeroot =A5i84y.2u
* @since 2006-2-2 gA=Pz[i)p
* @version 1.0 $zOV*O2
*/ N=u(
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public class ImprovedMergeSort implements SortUtil.Sort { qf K
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private static final int THRESHOLD = 10; kmBA
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/* 8o:h/F
* (non-Javadoc) (;g/wb:
* |m\7/&@<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w)<.v+u.Y
*/ ,sj(g/hg
public void sort(int[] data) { c
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int[] temp=new int[data.length]; )PR`irw
mergeSort(data,temp,0,data.length-1); }{:Jj/d
p
} ~Q"qz<WO
.&5 3sJ0{
private void mergeSort(int[] data, int[] temp, int l, int r) { Y|mtQE?c
int i, j, k; 0;a1 0b
int mid = (l + r) / 2; kK6t|Yn&
if (l == r) e lM<S3
return; UHV"<9tk
if ((mid - l) >= THRESHOLD) \gT({XU?
mergeSort(data, temp, l, mid); @RB^m(> 5
else !gyW15z'
insertSort(data, l, mid - l + 1); '~yxu$aK
if ((r - mid) > THRESHOLD) O\q6T7bfRW
mergeSort(data, temp, mid + 1, r); !*DYdqQ/
else M.SF}U
insertSort(data, mid + 1, r - mid); 0XljFQ
.`KzA]
for (i = l; i <= mid; i++) { \|vo@E
temp = data; p}~Sgi
} ymrnu-p o
for (j = 1; j <= r - mid; j++) { ,4,Bc<
temp[r - j + 1] = data[j + mid]; F'wG%
} 9[~.{{Y
int a = temp[l]; PQi(Oc
int b = temp[r]; l^tRy_T:-
for (i = l, j = r, k = l; k <= r; k++) { Z[!kEW
if (a < b) { `E;xI v|
data[k] = temp[i++]; uYO$gRem
a = temp; I<W<;A
} else { k N* I_#
data[k] = temp[j--]; ?w'03lr%
b = temp[j]; P7X3>5<;q
} g9Dynm5
} BC#`S&R
} Ta3* G
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/** o=![+g
* @param data #3>jgluM'
* @param l
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* @param i Kl ?C[
*/ WOgkv(5KN
private void insertSort(int[] data, int start, int len) { Nj?Q{ztS
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Ei2M~/
} #$ka.Pj
} sWTa;Qi
} VeEa17g&
} ,<7HLV
\ %xku:
堆排序: `p)U6J
25 U+L
package org.rut.util.algorithm.support; =^zGn+@z
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import org.rut.util.algorithm.SortUtil; b5~p:f-&4B
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/** CZ^
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* @author treeroot ]"O*&
* @since 2006-2-2 ~md06"AYJ
* @version 1.0 h8k\~/iJ
*/ h0x'QiCc
public class HeapSort implements SortUtil.Sort{ Jz0AYiCq
_/ 5
/* (non-Javadoc) vEE\{1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vv`94aQTD
*/ %"#ydOy
public void sort(int[] data) { {a2Gb
MaxHeap h=new MaxHeap(); 3*?W2;Zw$
h.init(data); ES(qu]CjI
for(int i=0;i h.remove(); pL*aU=FjQ
System.arraycopy(h.queue,1,data,0,data.length); Wj)v,v2&
} RP 6<#tq,
>`yRL[c;
private static class MaxHeap{ [k%u$
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void init(int[] data){ C%%gCPI^y
this.queue=new int[data.length+1]; 2/F8kVx{
for(int i=0;i queue[++size]=data; '"hSX=
fixUp(size); ;i [;%
} oFzmH!&ED
} Fo0s<YlS-
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private int size=0; vXM{)
39pA:3iTd
private int[] queue; Q7zpu/5?
sw:a(o&$
public int get() { m.gv?
return queue[1]; ; Ob^@OM
} ]W`M
<hEI
8F$]@0v`%
public void remove() { >%N,F`^3
SortUtil.swap(queue,1,size--); J_<6;#
fixDown(1); X_3hh} =
} oZL# *Z(h
file://fixdown "ChJR[4@
private void fixDown(int k) { lQRtsmZ0
int j; w}97`.Kt!n
while ((j = k << 1) <= size) { Hkf]=kPy*
if (j < size %26amp;%26amp; queue[j] j++; zlkW-rRkR
if (queue[k]>queue[j]) file://不用交换 R%9,.g<
break;
w%oa={x
SortUtil.swap(queue,j,k); nb*`GE
k = j; U9\w)D|+eE
} ]Ee$ulJ02
} s I 0:<6W
private void fixUp(int k) { M`*
BS
while (k > 1) { z63y8
int j = k >> 1; o>]z~^c
if (queue[j]>queue[k]) xNRMI!yv
break; Z;;A#h'%e
SortUtil.swap(queue,j,k); Zx: h)I
k = j; * vqUOh
} u3Zu ~C
} 0q]0+o*%
sQ[N3
} 4l>d^L
X]W(
} 00r7trZW^
v@J[qpX
SortUtil: *.T?#H
[;~"ctf{
package org.rut.util.algorithm; >4+KEK
r{*BJi.b
import org.rut.util.algorithm.support.BubbleSort; -I;\9r+
import org.rut.util.algorithm.support.HeapSort; I;G(Wj
import org.rut.util.algorithm.support.ImprovedMergeSort; R.
vVl+
import org.rut.util.algorithm.support.ImprovedQuickSort; N9rAosO*
import org.rut.util.algorithm.support.InsertSort; `UqX`MFz
import org.rut.util.algorithm.support.MergeSort; ID{XZ
import org.rut.util.algorithm.support.QuickSort; a#9pN?~
import org.rut.util.algorithm.support.SelectionSort; h7o.RRhK
import org.rut.util.algorithm.support.ShellSort; OpK_?XG
nC!L<OMr
/** RU>qj
*e
* @author treeroot /f AAQ7
* @since 2006-2-2 jmP;(j.|
* @version 1.0 <jM
{ <8-
*/ MhB>bnWXR
public class SortUtil { jCIY(/
public final static int INSERT = 1; D`KaIqLz
public final static int BUBBLE = 2; =([4pG
public final static int SELECTION = 3; dt"&
public final static int SHELL = 4; 7lKatk+7K
public final static int QUICK = 5; 7QoMroR
public final static int IMPROVED_QUICK = 6; \F""G,AWq{
public final static int MERGE = 7; U;!J(Us
public final static int IMPROVED_MERGE = 8; R-wz+j#
public final static int HEAP = 9; !DF5NAE
'P[#.9E
public static void sort(int[] data) { j"VDqDDz
sort(data, IMPROVED_QUICK); "{Y6.)x
} e,W,NnCICj
private static String[] name={ "7jE&I
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 4GXS(
}; <z>oY2%
$q.}eb0
private static Sort[] impl=new Sort[]{ QBN\wL8g
new InsertSort(), v53|)]V
new BubbleSort(), ~03MH'
new SelectionSort(), F!*GrQms
new ShellSort(), ?zbW z=nq
new QuickSort(), eg1F[~YL/
new ImprovedQuickSort(), ,(f W0d#
new MergeSort(), -8<vW e
new ImprovedMergeSort(), 9QL%q;
#
new HeapSort() 8%xBSob{j
}; =);@<Jp
tCar:p4$
public static String toString(int algorithm){ vbZ!NO!H
return name[algorithm-1]; Xkg
} !ab ef.%:
m4Ue)
public static void sort(int[] data, int algorithm) { ;-;lM6zP
impl[algorithm-1].sort(data); mVh;=>8K
} $em'H,*b3
y\Utm$)j
public static interface Sort { 1xkrhqq
public void sort(int[] data); W8;!rFW
} Jyr
V2Tk^
%H2ios[UO
public static void swap(int[] data, int i, int j) { 3JkdP h
int temp = data; ;[(d=6{hc]
data = data[j]; bS954d/
data[j] = temp; vLyazVj..
} @qj]`}Gx'
} CyW|k
Dz