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。 0.Q
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插入排序: PF0_8,@U
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package org.rut.util.algorithm.support; G~]Uk*M
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import org.rut.util.algorithm.SortUtil; ^L,K& Jd
/** ^7`BP%6
* @author treeroot ]"pVj6O
* @since 2006-2-2 }g@v`5
* @version 1.0 dUD[e,?
*/ WSPI|#Xr%
public class InsertSort implements SortUtil.Sort{ 8$]1M,$r
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/* (non-Javadoc) Q8$}@iA[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ex.yU{|c
*/ XMCXQs&
public void sort(int[] data) { SjK
int temp; !K#qe Y}
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); a)!o @
} b35fs]}u-6
} :ffY6L+
} HRpte=`q
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} Q*GN`07@?d
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冒泡排序: %J}xg^+f
*j|~$e}C
package org.rut.util.algorithm.support; 3h]g}&k
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import org.rut.util.algorithm.SortUtil; ynp 8rf
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/** a6ekG YW
* @author treeroot }czrj%6
* @since 2006-2-2 l&[O
* @version 1.0 ),_@WW;k
*/ uIY#e<)}G
public class BubbleSort implements SortUtil.Sort{ n5|fHk^s
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/* (non-Javadoc) |o7[|3:M
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xKbXt;l2
*/ SA:Zc^aV
public void sort(int[] data) { D=TvYe
int temp; O/^%2mG
for(int i=0;i for(int j=data.length-1;j>i;j--){ t <~h'U
if(data[j] SortUtil.swap(data,j,j-1); >:SHV W
} g%o(+d
} OUE(I3_
} 2y75
} xexaQuK
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} {.`vs;U
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选择排序: P|`8}|}a
zg>zUe
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package org.rut.util.algorithm.support; SV4E0c>
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import org.rut.util.algorithm.SortUtil; @b\$ yB@z
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/** cx,+k]9D
* @author treeroot 0J*??g-n
* @since 2006-2-2 *YI98
* @version 1.0 yHYsZ,GE
*/ `K"L /I9
public class SelectionSort implements SortUtil.Sort { 3l]lwV
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/* a9e>iU
* (non-Javadoc) NCXRevE
* P.se'z)E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W<{h,j8
*/ PxX4[ P
public void sort(int[] data) { LG0;#3YwH
int temp; q~Hn-5H4Q
for (int i = 0; i < data.length; i++) { .D~;u-%|F
int lowIndex = i; fy1|$d{'
for (int j = data.length - 1; j > i; j--) { Mc
lkEfn
if (data[j] < data[lowIndex]) { W_293["lS
lowIndex = j; R>|{N9
} Ng&%o
} ejKucEgD
SortUtil.swap(data,i,lowIndex); F~ty!(c
} @)F )S7
} eSn+ B;
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} 1NFsb-<u
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Shell排序: -]Bq|qTH[(
> tS'Q`R
package org.rut.util.algorithm.support; *][`@@->
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import org.rut.util.algorithm.SortUtil; $GV7o{"&
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/** 6 3iUi9P
* @author treeroot MR7}s4o
* @since 2006-2-2 Y>z>11yEB0
* @version 1.0 W.jGGt\<\
*/ o)|flI'vT
public class ShellSort implements SortUtil.Sort{ D>r&}6<
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/* (non-Javadoc) <\y@*fg+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wSL}`C gU
*/ 0|q AxR-
public void sort(int[] data) { G&SB-
for(int i=data.length/2;i>2;i/=2){
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for(int j=0;j insertSort(data,j,i); [Y/}
^
} OF>mF~
} 2>9C-VL2
insertSort(data,0,1); 1.JK33
} ZgJQ?S$D
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/** jwe *(k]z
* @param data \&:nFb%=
* @param j hW')Sp
* @param i h8j.(
*/ RU{twL.B
private void insertSort(int[] data, int start, int inc) { yF:1( 4
int temp; 0JS?; fk
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); t,Lrfv])
} e
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} E`JI>7
} 234p9A@
o 11jca|
} ;>hO+Wo
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快速排序: iXkF1r]i
qbr$>xH
package org.rut.util.algorithm.support; ]#<4vl\
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import org.rut.util.algorithm.SortUtil; ^0)g/`H^>
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/** GKqm&/M*=
* @author treeroot ;O5zUl-`
* @since 2006-2-2 Ty\R=y}}
* @version 1.0 B
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*/ + 480 l}
public class QuickSort implements SortUtil.Sort{ , pfG
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/* (non-Javadoc) F;EwQjTF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P:S .~Jq
*/ uc{Ihw
public void sort(int[] data) { hFUlNJ
quickSort(data,0,data.length-1); 5~U/
} 2W(s(-hD
private void quickSort(int[] data,int i,int j){ I|!OY`ko
int pivotIndex=(i+j)/2; 8%mu8l
file://swap h&iC;yj=
SortUtil.swap(data,pivotIndex,j); P5V}#;v
6wRd<]C
int k=partition(data,i-1,j,data[j]); K3&qq[8.e
SortUtil.swap(data,k,j); c):/!Q
if((k-i)>1) quickSort(data,i,k-1); #zy:a%
if((j-k)>1) quickSort(data,k+1,j); Es`Px_k
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} ~_)^X
/** @;4zrzQi7
* @param data <}Vrl`?h
* @param i r6Dz;uz
* @param j rKc9b<Ir
* @return s^TZXCyF o
*/ FGJ1dBLr
private int partition(int[] data, int l, int r,int pivot) { 'BxX0
do{ AN m
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); >uB?rGcM
SortUtil.swap(data,l,r); 1\m[$Gs:
} b_krk\e@S
while(l SortUtil.swap(data,l,r); aKDKmHd
return l; xa*hi87L*
} e"cXun4nS=
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} uMv,zO5
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改进后的快速排序: FxY}m
lFj]4
package org.rut.util.algorithm.support; T<>,lQs(a
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import org.rut.util.algorithm.SortUtil; Oszj$C(jF
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/** =%O6:YM
* @author treeroot fbvL7*
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* @since 2006-2-2 /s?`&1v|r
* @version 1.0 A\DCW
*/ DfD&)tsMQ
public class ImprovedQuickSort implements SortUtil.Sort { ^
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private static int MAX_STACK_SIZE=4096; (lqC[:
private static int THRESHOLD=10; SulY1,
/* (non-Javadoc) gVuFHHeUz
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n8[!pH~6
*/ E]d.z6k
public void sort(int[] data) { Q{>k1$fkV
int[] stack=new int[MAX_STACK_SIZE]; T763:v
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int top=-1; C): 1?@
int pivot; Nx;~@
int pivotIndex,l,r; ~8+ Zs
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stack[++top]=0; o/)h"i0P
stack[++top]=data.length-1; JR|ck=tq
1&OW4_
while(top>0){ HJH{nz'Lw
int j=stack[top--]; RB\uK
1+
int i=stack[top--]; >:!5*E5?
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pivotIndex=(i+j)/2; M_f:A
pivot=data[pivotIndex]; 6@!`]tSCK
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SortUtil.swap(data,pivotIndex,j); 0mVNQxHI
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file://partition gJ{)-\
l=i-1; Fo_sgv8O<
r=j; ~?}Emn;t
do{ !<";cw(q
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); J;e2&gB
SortUtil.swap(data,l,r); C )
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} 0+ '&`Q!u
while(l SortUtil.swap(data,l,r); }<r)~{UV
SortUtil.swap(data,l,j); $PPi5f}HD
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i
if((l-i)>THRESHOLD){ Q&;9x? e
stack[++top]=i; b|DdG/O
stack[++top]=l-1; (t|Zn@uY
} w9imKVry
if((j-l)>THRESHOLD){ *^4"5X@
stack[++top]=l+1; n>XdU%&
stack[++top]=j; ^
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} V!=,0zy~Z
*&W"bOMH*
} `wVyb>T
file://new InsertSort().sort(data); &z3o7rif$
insertSort(data); J@'wf8Ub
} NI]N4[8(
/** SfyQ$$Z
* @param data Y.UFbrv
*/ 'H!Uh]!
private void insertSort(int[] data) { R n[cW5Y<
int temp; 0OE:[pR
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); x9g#<2w8
} X_h}J=33Q
} n\DV3rXI9
} {tZ.v@
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} {\5
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归并排序: ZBthU")?
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package org.rut.util.algorithm.support; ]ieeP4*
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import org.rut.util.algorithm.SortUtil; AkV#J,
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/** u#.2w)!D
* @author treeroot x;d6vBTUb
* @since 2006-2-2 4HlQ&2O%#
* @version 1.0 IJ"q~r$
*/ (A#^l=su
public class MergeSort implements SortUtil.Sort{ abj Q)=u
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/* (non-Javadoc) cwg"c4V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z:*|a+cy
*/ H{wl% G
public void sort(int[] data) { L4HI0Mx
int[] temp=new int[data.length]; /4Gt{ygSr
mergeSort(data,temp,0,data.length-1); 5j(k:a+!H
} ~>|ziHx
8 Z~EwY*
private void mergeSort(int[] data,int[] temp,int l,int r){ iBaA9
int mid=(l+r)/2; $&td=OK
if(l==r) return ; e"<OELA
mergeSort(data,temp,l,mid); L0o\J` :
mergeSort(data,temp,mid+1,r); ,zjv7$L
for(int i=l;i<=r;i++){ 0l6.<-f{
temp=data; (<9u-HF#
}
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int i1=l; 02^ rV*re
int i2=mid+1; mzgfFNm^G)
for(int cur=l;cur<=r;cur++){ Zy/_
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if(i1==mid+1) ;=z:F<Y
data[cur]=temp[i2++]; @ 6vIap|
else if(i2>r) 4WB0Pt{
data[cur]=temp[i1++]; fJg+ Ryo
else if(temp[i1] data[cur]=temp[i1++]; xJe%f\UDu
else n[rCQdM&U"
data[cur]=temp[i2++]; $UwCMPs X
} ]f_p8?j"
} bt?5*ETA
mfr|:i
} z{QqY.Gu{G
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改进后的归并排序: B@ EC5Ap*
N!}f}oF
package org.rut.util.algorithm.support; %N._w!N<5n
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import org.rut.util.algorithm.SortUtil; uY To9A
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/**
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* @author treeroot RA 6w}:sq7
* @since 2006-2-2 ;xTpE2 -~
* @version 1.0 SXh-A1t
*/ "tK=+f`NM
public class ImprovedMergeSort implements SortUtil.Sort { PKz':_|
i%?* @uj
private static final int THRESHOLD = 10;
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/* (ZlU^Gw#UB
* (non-Javadoc) ~xTt204S
* -9?]IIVb
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u ga_T
*/ [}m[ )L\
public void sort(int[] data) { UiNP3TJ'L
int[] temp=new int[data.length]; *T1_;4i
mergeSort(data,temp,0,data.length-1); DY*N|OnqJ
} EU#^7
4+tEFxvX&
private void mergeSort(int[] data, int[] temp, int l, int r) { 7yQ4*UB
int i, j, k; U<XG{<2
int mid = (l + r) / 2; "dlVk~
if (l == r) /-s6<e!
return; ;Rf'P}"]
if ((mid - l) >= THRESHOLD) LzL
So"n
mergeSort(data, temp, l, mid); 1Y,Z
%d
else kx^/*~ex
insertSort(data, l, mid - l + 1); K=&>t6s<
if ((r - mid) > THRESHOLD) *qq+jsA6wH
mergeSort(data, temp, mid + 1, r); XWw804ir
else {;oPLr+Z
insertSort(data, mid + 1, r - mid); J}t%p(mb
<UCl@5g&
for (i = l; i <= mid; i++) { U0+-W07>
temp = data; MQ2_`pi
} mE[y SrV
for (j = 1; j <= r - mid; j++) { V]^$S"Tv
temp[r - j + 1] = data[j + mid]; X8\GzNE~R
} An@t?#4gxi
int a = temp[l]; ssL\g`xe
int b = temp[r]; xSu >
for (i = l, j = r, k = l; k <= r; k++) { F0#
'WfM#
if (a < b) { 2AdDIVYC
data[k] = temp[i++]; mkpMfPt
a = temp; unxqkU/<Z
} else { ]$hBMuUa
data[k] = temp[j--]; Hr C+Yjp
b = temp[j]; tJmTBsn
} a'T;x`b8U,
} dr"1s-D4IQ
} ~J]qP #C
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/** XPPdwTOr
* @param data '%;m?t%q
* @param l ^J{:x
* @param i PY'2h4IL
*/ Sjj6q`
private void insertSort(int[] data, int start, int len) { @)}L~lb[)
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Y-9I3?ar
} &5;"#:ORcK
} (k P9hcV
} (m$Y<{)2
} +`15le`R
p<%d2@lp
堆排序: 4ppz,L,4
JGZBL{8
package org.rut.util.algorithm.support; I =#$8l.*
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import org.rut.util.algorithm.SortUtil; qgB_=Q#E
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/** [>9is=>o.
* @author treeroot gDzK{6Z}
* @since 2006-2-2 u&e~1?R
* @version 1.0 YkADk9fE
*/ A}w/OA97RO
public class HeapSort implements SortUtil.Sort{ ?A0)L27UE&
sos5Y}
/* (non-Javadoc) z9"U!A4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ +,l-Nz
public void sort(int[] data) { 'fW-Y!k%
MaxHeap h=new MaxHeap(); L50n8s
h.init(data); wM{s|Ay
for(int i=0;i h.remove(); ig"L\ C"T
System.arraycopy(h.queue,1,data,0,data.length); tX[WH\(xI
} bd`P0f?
9JwPSAo;
private static class MaxHeap{ H*6W q
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void init(int[] data){ _dU\JD
this.queue=new int[data.length+1]; Xc.`-J~Il
for(int i=0;i queue[++size]=data; 4!$"ayGv;D
fixUp(size); zeRyL3fnmb
} m+9#5a-
} 0`H#
'/
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private int size=0; 1*7@BP5
kcEeFG;DQ
private int[] queue;
lRQYpc\
@nf`Gw ;
public int get() { |uDdHX8T
return queue[1]; `u\n0=go
} M%#e1"n
2qp#N%
public void remove() { P2Y^d#jO
SortUtil.swap(queue,1,size--); d5d@k
fixDown(1); `h;[TtIX4
} >sbu<|]a
7
file://fixdown S>{~nOYt-`
private void fixDown(int k) { =c7;r]Ol
int j; V8(-
while ((j = k << 1) <= size) { /RF7j;
if (j < size %26amp;%26amp; queue[j] j++; IA(5?7x`<
if (queue[k]>queue[j]) file://不用交换 7z-[f'EIUI
break; ^Dx&|UwiZa
SortUtil.swap(queue,j,k); w
= KPT''!
k = j; %)n=x
ne
} jdBLsy@
} Pz^544\~ou
private void fixUp(int k) { 4P0}+
while (k > 1) { 11lsf/IP
int j = k >> 1; D{!IW!w
if (queue[j]>queue[k]) xC?h2hIt
break; <GsuZ
SortUtil.swap(queue,j,k); e(yh[7p=
k = j; n`KY9[0U=
} @pxcpXCy
} G&dKY h\
KSL`W2}
} F!do~Z
Debv4Gr;^
} =lC7gS!U
n:X y6H
SortUtil: 7o4\oRGV
3a|\dav%
package org.rut.util.algorithm; m kexc~l
@WB@]-+J
T
import org.rut.util.algorithm.support.BubbleSort; nP$9CA
import org.rut.util.algorithm.support.HeapSort; ElXFeJ%[G
import org.rut.util.algorithm.support.ImprovedMergeSort; s @C}P
import org.rut.util.algorithm.support.ImprovedQuickSort; IK]d3owA
import org.rut.util.algorithm.support.InsertSort; y}H!c;
import org.rut.util.algorithm.support.MergeSort; \Cj B1]I
import org.rut.util.algorithm.support.QuickSort; 7d vnupLh
import org.rut.util.algorithm.support.SelectionSort; `x|?&Ytmf9
import org.rut.util.algorithm.support.ShellSort; p#Bi>/C6
Z]ONh
/** <}LC~B!
* @author treeroot 5X+A"X
;C
* @since 2006-2-2 Yw9GN2AG
* @version 1.0 S[N5 ikg
*/ W4N{S.#!
public class SortUtil { F5Va+z,jg
public final static int INSERT = 1; +q oRP2
public final static int BUBBLE = 2; b]y2+A.n
public final static int SELECTION = 3; h\e.e3/
public final static int SHELL = 4; Y0>y8UV
public final static int QUICK = 5; Z}QB.$&
public final static int IMPROVED_QUICK = 6; % `3jL7|
public final static int MERGE = 7; iB{V^ksU
public final static int IMPROVED_MERGE = 8; fIF8%J ^3
public final static int HEAP = 9; 7 3m1
$^P0F9~0
public static void sort(int[] data) { ZW}_DT0
sort(data, IMPROVED_QUICK); l,8##7
} MPV5P^@X
private static String[] name={ nR~(0G,H
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" nK,w]{<wG!
}; hQi2U
KSvE~h[#+
private static Sort[] impl=new Sort[]{ ys~x$
new InsertSort(), o@Oqm> ]SS
new BubbleSort(), nlYNN/@"
new SelectionSort(), OCUr{Nh
new ShellSort(), &vJH$R
new QuickSort(), :>*7=q=
new ImprovedQuickSort(), r,udO,Yi=c
new MergeSort(), ;fJ.8C
new ImprovedMergeSort(), TN.rrop`#g
new HeapSort() /\Ef%@
}; 9UkBwS`
@VBcJ{e,
public static String toString(int algorithm){ "#] $r
return name[algorithm-1]; !?XC1xe~R
} IU[ [H#
#jk_5W
public static void sort(int[] data, int algorithm) { TO_e^A#
impl[algorithm-1].sort(data); `g,..Ns-r
} NgwbQ7)
WM{=CD
public static interface Sort { xmX 4qtAL
public void sort(int[] data); /B3i C#?
} G"6 !{4g
O}P`P'Y|'
public static void swap(int[] data, int i, int j) { *fdTpXa
int temp = data; ~BF&rx5Q
data = data[j]; j6YOKJX
data[j] = temp; ;,TFr}p`
} \8
":]EU
} ?(PKeq6