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。 )_nc;&%w
插入排序: QviH+9
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package org.rut.util.algorithm.support; sC Fqz[I
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import org.rut.util.algorithm.SortUtil; \P_1@sH=
/** F? kW{,*
* @author treeroot KS/1ux4x
* @since 2006-2-2 ^MesP:[2
* @version 1.0 {Ah\-{]
*/ S/|'ggC
public class InsertSort implements SortUtil.Sort{ dM(}1%2
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/* (non-Javadoc) gNO<`9q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \*s'S*~
*/ k4+F
public void sort(int[] data) { yD+)!q"
int temp; 2c.~cNx`q[
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Y
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} )IGE2k|
} mB.kV Ve0
} +1H.5|
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} fo$iV;x`
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冒泡排序: h*f=
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package org.rut.util.algorithm.support; vIrLG1EK
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import org.rut.util.algorithm.SortUtil; /I3#WUc;![
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/** '!64_OMj'
* @author treeroot =j 6amk-
* @since 2006-2-2 mfO:#]K
* @version 1.0 l|`%FB^ k
*/ xNTO59Y-s
public class BubbleSort implements SortUtil.Sort{ ysfR@ sH7
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/* (non-Javadoc) @4m_\]Wy
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MPMJkL$F^
*/ inavi5.
public void sort(int[] data) { KE+y'j#C3
int temp; L=Q-r[
for(int i=0;i for(int j=data.length-1;j>i;j--){ qx<`Kc4
if(data[j] SortUtil.swap(data,j,j-1); _cx}e!BK#
} _JA.~edqM
} \Nu(+G?e
} gM20n^
} 2 As 4}
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} qtTys gv
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选择排序: .
zvF!!z
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package org.rut.util.algorithm.support; =*qu:f\y
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import org.rut.util.algorithm.SortUtil; YMwMaU)K,
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/** b&A+`d
* @author treeroot Xvm.Un<N
* @since 2006-2-2 1`2n<qo
* @version 1.0 S5E mLgnRs
*/ i)P.Omr
public class SelectionSort implements SortUtil.Sort { )+Wx!c,mb
A?q[C4-BO,
/* A0yRA+
* (non-Javadoc) }%[TJ@R;
* B5u06O
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =M)>w4-
*/ l/`<iG%
public void sort(int[] data) { h{S';/=8
int temp; `f}c 1
for (int i = 0; i < data.length; i++) { |cJyP9}n
int lowIndex = i; %up]"L&i
for (int j = data.length - 1; j > i; j--) { 1agyT
if (data[j] < data[lowIndex]) { r80w{[S$
lowIndex = j; <O&L2E @~f
} 9]BpP0f\
} ZebXcT ,41
SortUtil.swap(data,i,lowIndex);
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} 4QdY"s(n
} iCao;Zb
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} 49~5U+x;
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Shell排序: e//28=OH
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package org.rut.util.algorithm.support; _(3VzI'G
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import org.rut.util.algorithm.SortUtil; 'O8"M
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/** RS#)uC5/%
* @author treeroot C
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* @since 2006-2-2 b4!(~"b.
* @version 1.0 ?C//UN;
*/ ||cG/I&,
public class ShellSort implements SortUtil.Sort{ x:O?Fj
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/* (non-Javadoc) bgqN&J)Jr)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QS,IM>Nr
*/ \CM(
public void sort(int[] data) { 7qV_QZ!.
for(int i=data.length/2;i>2;i/=2){ bqN({p&
for(int j=0;j insertSort(data,j,i); y'xB? >|
} 7 w_`<b6
} Z_D8}$!
insertSort(data,0,1); +,9I3Dq
} xvQJTRk
c~b[_J)
/** !v<r=u
* @param data ,(}7 ST
* @param j abuHu'73
* @param i bKYLBu:
*/ [Oe$E5qv)]
private void insertSort(int[] data, int start, int inc) { FEw51a+V
int temp; 5Jd&3pO
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc);
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} !]&a/$U
} aJ8 8U69
} 69ia #
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} m.EI("n"J
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快速排序: s\1h=V)!H
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package org.rut.util.algorithm.support; WmP"u7I4
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import org.rut.util.algorithm.SortUtil; 2)h
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/** *L%HH@] %_
* @author treeroot F(^vD_G
* @since 2006-2-2 oqB(l[%z2
* @version 1.0 o"R[#E&Yx
*/ $`.7XD}
public class QuickSort implements SortUtil.Sort{ DbP!wU lqR
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/* (non-Javadoc) ~t n*y4uK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f}0(qN/G
*/ d3_aFsQ
public void sort(int[] data) { v#@"Evh7
quickSort(data,0,data.length-1); T|Sz~nO}f
} {*ATY+
private void quickSort(int[] data,int i,int j){ wAkpk&R
int pivotIndex=(i+j)/2; g+t-<D"L5
file://swap e3"GC_*#
SortUtil.swap(data,pivotIndex,j); Yw"o_
%RG kXOgp
int k=partition(data,i-1,j,data[j]); cjHo?m'
SortUtil.swap(data,k,j); LoSblV
if((k-i)>1) quickSort(data,i,k-1); zJ93EtlF
if((j-k)>1) quickSort(data,k+1,j); d5fnJ*a>l
E#v}//
} z4b2t}
/** TDs=VTd@Z
* @param data B/:q
* @param i _(5SiK R
* @param j oS0l Tf\
* @return Ii%^z?'
*/ _d76jmujJ
private int partition(int[] data, int l, int r,int pivot) { 6!bVPIyYO
do{ Q4Zuz)r*
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); @AaM]?=P{
SortUtil.swap(data,l,r); t*m04* }
} P {i\x#
while(l SortUtil.swap(data,l,r); Hgu$)yhlj
return l; D)U
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} g&!UaJ[#9
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} Z,)4(#b =
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改进后的快速排序: ^=.R#zrc
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package org.rut.util.algorithm.support; F{0Z
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import org.rut.util.algorithm.SortUtil; x^Q:U1
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/** 8om6wALXB
* @author treeroot /W1!mih
* @since 2006-2-2 t6m3lq{
* @version 1.0 ?1*Ka
*/ 0_q8t!<xJw
public class ImprovedQuickSort implements SortUtil.Sort { .T
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private static int MAX_STACK_SIZE=4096; h:-ZXIv?
private static int THRESHOLD=10; QMLz
/* (non-Javadoc) 1"YN{Ut;G
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n/6#rj^$
*/ NY
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public void sort(int[] data) { Y<-h#_
int[] stack=new int[MAX_STACK_SIZE]; Ok2KTsVl
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int top=-1; x? tC2L
int pivot; ^ gMoW
int pivotIndex,l,r; #%O|P&rA
h/ 5|3
stack[++top]=0; Z<L}ur
stack[++top]=data.length-1; ^\
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while(top>0){ r+n0M';0
int j=stack[top--]; <*EMcZ
int i=stack[top--]; ?!^ow5"8
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pivotIndex=(i+j)/2; u^|c_5J(
pivot=data[pivotIndex]; ,%"!8T
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SortUtil.swap(data,pivotIndex,j); JJ_b{ao<
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file://partition *o.f<OwOz
l=i-1; w\,N}'G
r=j; ]<L(r,@,
do{ k#F |
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); s|F}Abx,^
SortUtil.swap(data,l,r); /Cy4]1dw
} <|Srbs+
while(l SortUtil.swap(data,l,r); 7]W6\Z
SortUtil.swap(data,l,j); "@^Pb$BLY
%]7'2
if((l-i)>THRESHOLD){ )Tjh
stack[++top]=i; @W}cM
stack[++top]=l-1; b.I_
} Z,zkm{9*
if((j-l)>THRESHOLD){ EP,j+^RVf
stack[++top]=l+1; X3e&c
stack[++top]=j; EyR~VKbJ'
} W[c[ulY&
c?5?TJpm
} %O6r
file://new InsertSort().sort(data); ! yqez
insertSort(data); ]QKo>7%[
} p3r("\Za,
/** )U12Rshl
* @param data >[}lC7 z,
*/ $mxm?7ZVR
private void insertSort(int[] data) { GWFF.Mo^
int temp; }`KK
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); )X
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} F<.oTP-B
} /2^"c+/'p
} ]%M&pc3U
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} YP
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归并排序: .3
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package org.rut.util.algorithm.support; a+'k#m
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import org.rut.util.algorithm.SortUtil; "I)/|x\G*
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/** +YZ*>ki
* @author treeroot F m?j-'
* @since 2006-2-2 b@ QCdi,u
* @version 1.0 <fHJ9(5$V
*/ U!d|5W.{Q
public class MergeSort implements SortUtil.Sort{ n%|og^\0
PRJ
/* (non-Javadoc) 8[b_E5!V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nuKcq!L
*/ "@z X{^:
public void sort(int[] data) { ^H"o=K8=
int[] temp=new int[data.length]; &F-
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mergeSort(data,temp,0,data.length-1); QPX&P{!g
} y1{TVpN
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private void mergeSort(int[] data,int[] temp,int l,int r){ )ifjK6*
int mid=(l+r)/2; RW{y.WhB
if(l==r) return ; U$yy7}g
mergeSort(data,temp,l,mid); E1r-$gf_
mergeSort(data,temp,mid+1,r); }7non
for(int i=l;i<=r;i++){ b5Q|$E
temp=data; M"Dv-#f
} L4DT*(;!E
int i1=l; M*!WXQlud
int i2=mid+1; xXf,j#`"
for(int cur=l;cur<=r;cur++){ .n n&K}h
if(i1==mid+1) Ff{,zfN+3
data[cur]=temp[i2++]; BLN|QaZ
else if(i2>r) dGyrzuPJ
data[cur]=temp[i1++]; D@2L<!\
else if(temp[i1] data[cur]=temp[i1++]; arIEd VfNa
else Gv[s86AP,
data[cur]=temp[i2++]; 1=Z!ZY}}e
} 7s0\`eXo/
} y'aK92pF:
cX!C/`ew>
} q9:g
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改进后的归并排序: rD+mI/_J`
VV;%q3}:
package org.rut.util.algorithm.support; Rk,'ujc
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import org.rut.util.algorithm.SortUtil; =t^jlb
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/** rFUR9O.{E
* @author treeroot }*
\*<d
3
* @since 2006-2-2 ,ZghV1z
* @version 1.0 MaPOmS8?
*/ fat;5XL@
public class ImprovedMergeSort implements SortUtil.Sort { @ ]40xKF
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private static final int THRESHOLD = 10; E!'6vDVC:
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/* Ur]/kij
* (non-Javadoc) 6P3h955c
* ~-<MoCm!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2X<%BFsE
*/ %x.du9
public void sort(int[] data) { ]1FLG*sB
int[] temp=new int[data.length]; 0 N"N$f
mergeSort(data,temp,0,data.length-1); 'W,*mfB
} j7U&a}(
PB
*v45
private void mergeSort(int[] data, int[] temp, int l, int r) { []v$QR&u#v
int i, j, k; 2eHVl.C5
int mid = (l + r) / 2; qu1+.z=|
if (l == r) V@g v
return; nK32or3
if ((mid - l) >= THRESHOLD) /ej[oR
mergeSort(data, temp, l, mid); NVghkd
else CY*o"@-o5)
insertSort(data, l, mid - l + 1); -)Bvx>8fq-
if ((r - mid) > THRESHOLD) MVnN0K4
mergeSort(data, temp, mid + 1, r); >23$_'2
else Nc&J%a
insertSort(data, mid + 1, r - mid); #}Yrxf
-#v1/L/=
for (i = l; i <= mid; i++) { x3g4 r_
temp = data; J/fnSy
} @I}VD\pF
for (j = 1; j <= r - mid; j++) { GGnlkp& E
temp[r - j + 1] = data[j + mid]; /o%VjP"<
} obE8iG@H
int a = temp[l]; }zks@7kf
int b = temp[r]; Unv'm5/L
for (i = l, j = r, k = l; k <= r; k++) { L2+cVR
if (a < b) { y>.t[*zT
data[k] = temp[i++]; ;DSH$'1i
a = temp; y=c={Qz@vn
} else {
gyMHC{l/B
data[k] = temp[j--]; ]=VRct
"
b = temp[j]; Gbjh|j=
} :_y!p
} N2k<W?wQ
} .dMdb7
V*ao@;sD
/** 76"4Q!
* @param data r<vy6
* @param l 3<Zp+rD
* @param i xu_,0ZT]{
*/ 'B{FRK
private void insertSort(int[] data, int start, int len) { 3:MJKS02OD
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 5VP0Xa ~
} ;}iB9 Tl
} ff5 gE'
} z~X/.>
} ymyzbE
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堆排序: O>pv/Ns
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package org.rut.util.algorithm.support; Nf^<pT[*
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import org.rut.util.algorithm.SortUtil; C+uW]]~I)
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/** $:%E<j4Dn
* @author treeroot }04mJY[
* @since 2006-2-2 JLnv O
* @version 1.0 w8>h6x"
*/ OtoM
public class HeapSort implements SortUtil.Sort{ );':aXj
DrKB;6
/* (non-Javadoc) uf90
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iX6>u4~(
*/ Vn4wk>b}$2
public void sort(int[] data) { :u./"[G
MaxHeap h=new MaxHeap(); GE(~d '
h.init(data); 3PGAUQR#"q
for(int i=0;i h.remove(); _<LL@IX
System.arraycopy(h.queue,1,data,0,data.length); @U18Dj[
} A
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8'zZVX D<
private static class MaxHeap{ y7M{L8{0
z,4mg6gt
void init(int[] data){ '{UKO7
this.queue=new int[data.length+1]; ] re=8s6
for(int i=0;i queue[++size]=data; E#!!tH`lgg
fixUp(size); _ Lb"yug
} gr*CN<
} ;5bd<N
v8*)^-Fx
private int size=0; i-Rn,}v
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private int[] queue; ^APtV6g
xy[#LX)RW
public int get() { 29,ET}~
return queue[1]; IGcq*mR=
} <-!1`@l>
/O}<e TR
public void remove() { s{Y4wvQyB
SortUtil.swap(queue,1,size--); '1:) q
fixDown(1); WN+i 3hC
} !Fp %2gt|
file://fixdown d(o=)!p
private void fixDown(int k) { A}SGw.3
int j; 0o=HOCL\
while ((j = k << 1) <= size) { ^"X.aksA
if (j < size %26amp;%26amp; queue[j] j++; U_(>eVi7F
if (queue[k]>queue[j]) file://不用交换 qU7_%Z
break; iCF},W+
SortUtil.swap(queue,j,k); Y@0'0
k = j; SOhM6/ID2/
} ^
*"f C
} ^iMr't\b
private void fixUp(int k) { WHY/x /$
while (k > 1) { B={_}f
int j = k >> 1; Q2VF+g,
if (queue[j]>queue[k]) o=3hWbe
break; b$7]cE
SortUtil.swap(queue,j,k); 3$nK
k = j; ^obuMQ;
} 9p qsr~
} Bi:lC5d5?
din,yHu~
} ?b,>+v-w::
&2y4k"B&)
} ::oFL#+
Kd`(^
SortUtil: e~SK*vR%]
fz=?QEG
package org.rut.util.algorithm; {siOa%;*
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import org.rut.util.algorithm.support.BubbleSort; 172 G
import org.rut.util.algorithm.support.HeapSort; 8|i'~BFHs
import org.rut.util.algorithm.support.ImprovedMergeSort; 4w^o !
import org.rut.util.algorithm.support.ImprovedQuickSort; yV!4Im.>
import org.rut.util.algorithm.support.InsertSort; Cy]=Y
import org.rut.util.algorithm.support.MergeSort; IC0L&;En
import org.rut.util.algorithm.support.QuickSort; dT|f<E/P
import org.rut.util.algorithm.support.SelectionSort; CaJ-oy8
import org.rut.util.algorithm.support.ShellSort; P35DVK S
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/** tk%f_"}
* @author treeroot `FMo;,j
* @since 2006-2-2 'w+]kt-
* @version 1.0 'dwT&v]@
*/ -I|xW
public class SortUtil { 0N,<v7PX
public final static int INSERT = 1; [Cl0Kw.LD
public final static int BUBBLE = 2; JpC'(N
public final static int SELECTION = 3; 7y'":1
public final static int SHELL = 4; R&Y_
public final static int QUICK = 5; <
'5~p$
public final static int IMPROVED_QUICK = 6; HY)xT$/J
public final static int MERGE = 7; <:v+<)K
public final static int IMPROVED_MERGE = 8; ! I@w3`
public final static int HEAP = 9; KS$t
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public static void sort(int[] data) { K3?5bT_{
sort(data, IMPROVED_QUICK); Y<xqws
} S/'0czDMW
private static String[] name={ a;HAuy`M x
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" E5&Z={
}; :(n<c
I}4
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private static Sort[] impl=new Sort[]{ =Z^5'h~
new InsertSort(), Y@+Rb
new BubbleSort(), ;5 j|B|v
new SelectionSort(), %":3xj'EEI
new ShellSort(), IL].!9
new QuickSort(), o&?c,FwN
new ImprovedQuickSort(), <b:%o^
new MergeSort(), Hb=#`
new ImprovedMergeSort(), jSY[Y:6md
new HeapSort() 1>J.kQR^
}; ~rb0G*R>
P8d
public static String toString(int algorithm){ +~^S'6yB
return name[algorithm-1]; n[3z_QI
} Qg*\aa94
0\dmp'j]
public static void sort(int[] data, int algorithm) { .EKlw##
impl[algorithm-1].sort(data); m-AF&( ;K
} 2LwJ%!
]@&X*~c^Z
public static interface Sort { DK IH{:L7
public void sort(int[] data); F0:]@0>r
} aA`eKy) \
J2=4%#R!
public static void swap(int[] data, int i, int j) { l 00i2w
int temp = data; b#6S8C+@
data = data[j]; *G58t`]r
data[j] = temp; 4D?h}U /
} g3tE.!a5-
} w]wZJ/U`