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。 {221@ zcCq
插入排序: I('l)^m%
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package org.rut.util.algorithm.support; LxbVRw
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import org.rut.util.algorithm.SortUtil; G} p~VLf
/** C/XOI>
* @author treeroot pT
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* @since 2006-2-2 <NUZPX29
* @version 1.0 cWi2Sls
*/ mEA w^
public class InsertSort implements SortUtil.Sort{ uQDu<@5^[
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/* (non-Javadoc) WJ%b9{<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R$\ieNb
*/ ^m~=<4eX
public void sort(int[] data) { C]k\GlhB
int temp; [4gv_g
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 8/=2N
} L.5GX 29
} c;WS !.
} w v1R
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} !j(R_wOq
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冒泡排序: 2iUF%>
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package org.rut.util.algorithm.support; !"wIb.j}0
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import org.rut.util.algorithm.SortUtil; Ruf*aF(
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/** yO !*pC
* @author treeroot h0GXN\xI
* @since 2006-2-2 hAY_dM
* @version 1.0 [=iq4F'7
*/ ow&R~_
public class BubbleSort implements SortUtil.Sort{ vt1!|2{
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/* (non-Javadoc) _|F h^hq
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3KqylC&.
*/ zpY8w#b
public void sort(int[] data) { g3y44GCV
int temp; KMZ% 1=a
for(int i=0;i for(int j=data.length-1;j>i;j--){ B%,0zb+-L
if(data[j] SortUtil.swap(data,j,j-1); Dd*C?6
} J9o]$.e
} //`X+[bMG
} 7 `|- K
} (LnKaf8
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} Wg#>2)>
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选择排序: B${Q Y)t
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package org.rut.util.algorithm.support; rTx]%{
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import org.rut.util.algorithm.SortUtil; /u?^s "C/
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/** /m%;wH|6%
* @author treeroot +Ix;~
* @since 2006-2-2
OH&&d=~
* @version 1.0 1vX97n<}
*/ YM5;mPR
public class SelectionSort implements SortUtil.Sort { um[.r,++
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/* d!>PqPo
* (non-Javadoc) lLnD%*03
* W &*0F~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZM\Z2L]n
*/ w'}b 8m(L
public void sort(int[] data) { fi1tF/`
int temp; $[H3O(B0*
for (int i = 0; i < data.length; i++) { 0;)4.*t
int lowIndex = i; |TkO'QN
for (int j = data.length - 1; j > i; j--) { sVGyHA
if (data[j] < data[lowIndex]) { d^w6_
lowIndex = j; Ug/b;( dJ'
} qg|SBQ?6
} 59GS:
SortUtil.swap(data,i,lowIndex); Z[ys>\_To
} :X+7}!Wlo
} &)1+WrU
mzDbw-#
} @<h@d_8^k
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Shell排序: tX)^$3A
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package org.rut.util.algorithm.support; c!b4Y4eJ
*M09Y'5]
import org.rut.util.algorithm.SortUtil; xM[m(m
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/** PyK)ks!6
* @author treeroot m$ "B=b2
* @since 2006-2-2 \:8
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* @version 1.0 m#ID%[hg$
*/ y%f'7YZ4
public class ShellSort implements SortUtil.Sort{ T$!.
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/* (non-Javadoc) 67^?v)|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N_wB
*/ ca5Ir<mL
public void sort(int[] data) { L2+~I<|>
for(int i=data.length/2;i>2;i/=2){ /alJN`g
for(int j=0;j insertSort(data,j,i); i,ga2{GnM
} ~~z}yCl
} `i;f
insertSort(data,0,1); "H#2
} 8do-z"-
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/** U8 '}(
* @param data TF2'-"2Y
* @param j (*F/^4p!$
* @param i ("?V|
*/ yHe%e1
private void insertSort(int[] data, int start, int inc) { HZKqGkE
int temp; :A"GOc,
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 4;=+qb
} 741Sd8
} *6<<6f`(
} ,Tjc\;~%
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} E&9BeU
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快速排序: HW"@~-\
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package org.rut.util.algorithm.support; "&W80,O3
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import org.rut.util.algorithm.SortUtil; kIrb;bZ+l
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/** h8'`g 0
* @author treeroot BS!VAHO"V
* @since 2006-2-2 \xR1|M
* @version 1.0 /6 QwV->
*/ *>
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public class QuickSort implements SortUtil.Sort{ l$
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/* (non-Javadoc) b@`h]]~:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Bq@_/*'*Y
*/ bi~1d"j
public void sort(int[] data) { gM>geWB<
quickSort(data,0,data.length-1); v[57LB
} [_PZdIN
private void quickSort(int[] data,int i,int j){ O%}?DiSl
int pivotIndex=(i+j)/2; LD/NMb
file://swap lub_2Cb|j
SortUtil.swap(data,pivotIndex,j); 4h~CDy%_
ip8%9fG\>
int k=partition(data,i-1,j,data[j]); fRh}n ^X
SortUtil.swap(data,k,j); ZD ~ra7
if((k-i)>1) quickSort(data,i,k-1); y rH@:D/
if((j-k)>1) quickSort(data,k+1,j); =Z}$X:
$
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} l$/.B=]
/** F#=M$j_
* @param data owQSy9Az
* @param i zo83>bt
* @param j 9lqH
* @return jzvrJ14
*/ <<w*_GM
private int partition(int[] data, int l, int r,int pivot) { }2%L
0
do{ As{ "B
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); QNWGUg4*&
SortUtil.swap(data,l,r); 5Q7Z$A1a
9
} h>k[
while(l SortUtil.swap(data,l,r); <
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return l; Cg_9V4h.C
} u'`eCrKT*
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} lV".-:u_
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改进后的快速排序: J~}sQ{ 0
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package org.rut.util.algorithm.support; '9u(9S
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import org.rut.util.algorithm.SortUtil; z_f^L %J0
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/** hU'h78bt(
* @author treeroot Xrl# DN
* @since 2006-2-2 uo9FLm
* @version 1.0
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*/ Q%r KKOX8
public class ImprovedQuickSort implements SortUtil.Sort { WYJH+"@%j
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private static int MAX_STACK_SIZE=4096; }i$ER,hXh
private static int THRESHOLD=10; QZ&
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/* (non-Javadoc) 9$f%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +R"Y~
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*/ L9{y1'')
public void sort(int[] data) { Y[!s:3\f
int[] stack=new int[MAX_STACK_SIZE]; fDjJdRS"
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int top=-1; swKqsN.
int pivot; 7?ICXhu9
int pivotIndex,l,r; r(j :C%?}C
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stack[++top]=0; +?)R}\\
stack[++top]=data.length-1; hh!4DHv
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while(top>0){ Z\r?>2
int j=stack[top--]; O\F$~YQ
int i=stack[top--]; i"#pk"@`
Yz)+UF,
pivotIndex=(i+j)/2; ^u(-v/D9
pivot=data[pivotIndex]; " %
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SortUtil.swap(data,pivotIndex,j); E5q t~:C|
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file://partition ?t)Mt]("
l=i-1; W#&BU-|2
r=j; X'{o/U.
do{ ?U+nR/H:6
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); DGbEQiX$\
SortUtil.swap(data,l,r); _9yW; i-
} I;Pd}A_}=_
while(l SortUtil.swap(data,l,r); yXQ 28A
SortUtil.swap(data,l,j); 6t=)1T
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if((l-i)>THRESHOLD){ RiG]-K:
stack[++top]=i; #+&"m7
s
stack[++top]=l-1; tH=jaFJ
} <!=:{&d%
if((j-l)>THRESHOLD){ GC`/\~TM
stack[++top]=l+1; ;Wgkf_3
stack[++top]=j; MzMVs3w|
} & LhQr-g
%mAwK<MY`
} U1Y0G[i)
file://new InsertSort().sort(data); k%R(Qga
insertSort(data); qnFg7X>C,
} ;b}cn!U]
/** (3WK2IM^
* @param data %/2OP &1<
*/ l?A~^4(5a/
private void insertSort(int[] data) { |?v .5|1
int temp; &D91bT+L
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); y[ZVi5) ,
} <Uu[nUJ
} r:M0#
2
} RR2M+vQ
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} dTWcn7C
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归并排序: RdB,;Um9f
5?A<('2
package org.rut.util.algorithm.support; `(r0+Qx
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import org.rut.util.algorithm.SortUtil; +~EnrrT+W
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/** Bk]
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* @author treeroot ^HU>fkSk
* @since 2006-2-2 u"Mf xW`
* @version 1.0 #y'p4Xf
*/ W=y9mW|p/
public class MergeSort implements SortUtil.Sort{ Y() ZM
s<;{q+1#
/* (non-Javadoc) jX.'G
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YZAQt*x
*/ nub!*)q
public void sort(int[] data) { m=TZfa^r
int[] temp=new int[data.length]; Wo Z@
mergeSort(data,temp,0,data.length-1); ]E.\ |I(
} {Y3:Y+2X3*
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private void mergeSort(int[] data,int[] temp,int l,int r){ F-XMy>9
int mid=(l+r)/2; *^KEb")$
if(l==r) return ; w\M"9T
mergeSort(data,temp,l,mid); "pO**z$Z
mergeSort(data,temp,mid+1,r); cT@H49#uB
for(int i=l;i<=r;i++){ ^U);MH8
temp=data; U] P{~
} <kJ`qbOU
int i1=l; y Ni3@f
int i2=mid+1; H
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for(int cur=l;cur<=r;cur++){ ]F"P3':
if(i1==mid+1) ZFtJoGaR
data[cur]=temp[i2++]; vXZ
)
else if(i2>r) pgW^hj\
data[cur]=temp[i1++]; %jJIR88
else if(temp[i1] data[cur]=temp[i1++]; |tC= j.
else nt@uVwfQ
data[cur]=temp[i2++]; N;DE,[:<
} G^Y^)pc]
} a^Z=xlJ/uZ
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} e0]#vqdO
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改进后的归并排序: s)Xz}QPK.
)=cJW(nfP
package org.rut.util.algorithm.support; o=-Af|#b
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import org.rut.util.algorithm.SortUtil; l
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/** Md0`/F:+2
* @author treeroot 3[@:I^q
* @since 2006-2-2 d6ifJ
* @version 1.0 E
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*/ RU~Pa+H
public class ImprovedMergeSort implements SortUtil.Sort { N'PK4:
w]fVELU
private static final int THRESHOLD = 10; % .wx]:o
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/* 2&=CC4<!d
* (non-Javadoc) KO/#t~
* 6\Tq,I7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @V&HE:P
*/ *\_>=sS x;
public void sort(int[] data) { [ {HTGz@(
int[] temp=new int[data.length]; ;Aheeq746
mergeSort(data,temp,0,data.length-1); og_ylCh:
} : rudo[L
JE# H&]
private void mergeSort(int[] data, int[] temp, int l, int r) { ^F-2tc
int i, j, k; '@zMZc!
int mid = (l + r) / 2; p} JGx^X~
if (l == r) o?+?@Xb'
return; rHqP[[4B'
if ((mid - l) >= THRESHOLD) a@AIv"q
mergeSort(data, temp, l, mid); [;l;kom
else p<&>1}j=
insertSort(data, l, mid - l + 1); Jx Kd
if ((r - mid) > THRESHOLD) a/3yn9`sQ
mergeSort(data, temp, mid + 1, r); "yl6WG#J
else k2.\1}\
insertSort(data, mid + 1, r - mid); C>F5=&
1(Z+n,Hh
for (i = l; i <= mid; i++) { 1/syzHjbY
temp = data; wa!z:}]
} i2-]Xl
for (j = 1; j <= r - mid; j++) { =4L%A=]`
temp[r - j + 1] = data[j + mid]; 3lKs>HE0
} />uE)R$
int a = temp[l]; ~@e=+Z
int b = temp[r]; I,aaSBwt&2
for (i = l, j = r, k = l; k <= r; k++) { I,"q:QS+
if (a < b) { ] VEc9?
data[k] = temp[i++]; 9!0-~,o
a = temp; vP_mS 4X
} else { Xc&J.Tw#4*
data[k] = temp[j--]; x_ <,GE@
b = temp[j]; 3JD"* <zs
} _,? xc"
} 5g;mc.Cvt
} /g8nT1k
muDOY~.
/** L>lxkq8!Q
* @param data [h>A<O
* @param l `uqe[u;`6
* @param i k^#*x2b
*/ 7W+{U02O
private void insertSort(int[] data, int start, int len) { '}OAl
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); e&K7n@
} r1z+yx
} p^Z|$aZZ
} [.$/o}
} VMS3Q)Ul
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堆排序: DcC|oU[
d7uS[tKqg
package org.rut.util.algorithm.support; <e wcWr
xa967Ki9"
import org.rut.util.algorithm.SortUtil; Dc 84^>l
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/** O7od2fV(i7
* @author treeroot #iRd2Qj%
* @since 2006-2-2 M5xMTP-
* @version 1.0 (Zej\lEN
*/ #MviO!@
public class HeapSort implements SortUtil.Sort{ b/tcD r
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/* (non-Javadoc) iAeq%N1(0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \5a;_N[Ed
*/ @y6^/'
public void sort(int[] data) { "|N0oEG&
MaxHeap h=new MaxHeap(); ~wcp&D
h.init(data); K_;?Sr=
for(int i=0;i h.remove(); [<}W S}
.
System.arraycopy(h.queue,1,data,0,data.length); HIvSh6|0p
} =AF;3
) bd`U
private static class MaxHeap{ Yf1%7+V35
mZ0_^
void init(int[] data){ 8M]QDgd.
this.queue=new int[data.length+1]; }0>\%C
for(int i=0;i queue[++size]=data; mR#"ng
fixUp(size); @Hr1.f
} kLXa1^Lq
} J:I As:e`
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private int size=0; H2+V1J=
-k%|sqDZj
private int[] queue; ACI.{`SrQ=
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public int get() { TXbi>t:/S{
return queue[1]; C?<[oQb#
} SPvKq=,
O7J V{'?
public void remove() { ?xwZ< A
SortUtil.swap(queue,1,size--); 0}e&ONDQ
fixDown(1); $J]NWgXl@
} 1C/Vwf:@
file://fixdown &x@N5j5Q
private void fixDown(int k) { sqj8I"<`
int j; R[#B|$
while ((j = k << 1) <= size) { M?DXCsZ,)s
if (j < size %26amp;%26amp; queue[j] j++; $_|jI
^
if (queue[k]>queue[j]) file://不用交换
BDX>J3h
break; UI wTf2B
SortUtil.swap(queue,j,k); a!&m\+?
k = j; |T*t3}
} Bi0&F1ZC!
} 6rlM\k@!
private void fixUp(int k) { g}BS:#$
while (k > 1) { cA{,2CYc
int j = k >> 1; `0=j,54cx
if (queue[j]>queue[k]) N*KM6j
break; " "CNw-^t
SortUtil.swap(queue,j,k); BtQqUk#L2
k = j; Lf;Uv[^c
} |9)y<}c5oM
} _1jeaV9@
K~qKr<)
} @Dd (
n ,@ge
} l HZ4N{n
-(E-yCu
SortUtil: 1V]j8
9 vNz
yh\
package org.rut.util.algorithm; o<g1;
/f>I;z1
import org.rut.util.algorithm.support.BubbleSort; /vqsp0e"H
import org.rut.util.algorithm.support.HeapSort; 3B4C@ {
import org.rut.util.algorithm.support.ImprovedMergeSort; i}C%`1+(
import org.rut.util.algorithm.support.ImprovedQuickSort; Qs 'dwc
import org.rut.util.algorithm.support.InsertSort; ~S0T+4$
import org.rut.util.algorithm.support.MergeSort; l i%8X.
import org.rut.util.algorithm.support.QuickSort; \'B%lXh
import org.rut.util.algorithm.support.SelectionSort; |e2s{J2
import org.rut.util.algorithm.support.ShellSort; Oz=!EG|N
T6=~vOzTJ
/** <7j"CcJzZ
* @author treeroot GJBMaT
* @since 2006-2-2 K3`48,`?wA
* @version 1.0 %:Zp7O2UB'
*/ bhCAx W
public class SortUtil { |3gWH4M4**
public final static int INSERT = 1; |(5|6r3
public final static int BUBBLE = 2; fBPJ8VY
public final static int SELECTION = 3; 92^Dn`g
public final static int SHELL = 4; 3e|,Z'4}4
public final static int QUICK = 5; {InW%qSn_
public final static int IMPROVED_QUICK = 6; @Z@S;RWSU
public final static int MERGE = 7; #/WjKr n
public final static int IMPROVED_MERGE = 8; /$UWTq/C7
public final static int HEAP = 9; V&d?4i4/Q
=CL h<&
public static void sort(int[] data) { rU7t~DKS
sort(data, IMPROVED_QUICK); deutY.7g
} n:JG+1I
private static String[] name={ i]0$7s9!
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" D!bi>]Yd
}; <-!'V,c
N||s#
private static Sort[] impl=new Sort[]{ [Ib17#74
new InsertSort(), u6/;=]0
new BubbleSort(), 0Pg@%>yb~
new SelectionSort(), V`LW~P;
new ShellSort(), m8&XW2S
new QuickSort(), R-\"^BV#Z
new ImprovedQuickSort(), SXmh@a"*\
new MergeSort(), K(}<L-cv
new ImprovedMergeSort(), ns&(g^
new HeapSort() `u7twW*U2
}; t\lx*_lr
7 '7a`-W
public static String toString(int algorithm){ RH;Kbu
return name[algorithm-1]; Cta!"=\
} Y=
^o {C6
;}AcyVV
public static void sort(int[] data, int algorithm) { 2spK#0n.HV
impl[algorithm-1].sort(data); mC EWp
} CdiL{zH\3
[.4D<}e
public static interface Sort { V(n3W=#kky
public void sort(int[] data); eRIdN(pP
} $+HS^m
4\2~wSr
public static void swap(int[] data, int i, int j) { OC2%9Igx0
int temp = data; s9Bd mD^|#
data = data[j]; *q(HW
data[j] = temp; DZX4c 2J
} 5$
rV0X,O
} E=~Ahkg