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。 5UbVg
插入排序: `ijX9c
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package org.rut.util.algorithm.support; K\q/JuDfc
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import org.rut.util.algorithm.SortUtil; {65X37W
/** |D~MS`~qd5
* @author treeroot ajAEGD2Zq
* @since 2006-2-2 N\?iU8w=
* @version 1.0 Y>+D\|%Q
*/ c#DTL/8"DO
public class InsertSort implements SortUtil.Sort{ ln.~ >FO
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/* (non-Javadoc) o%.cQo=v*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ow
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*/ 9[!
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public void sort(int[] data) { rd RX
int temp; /%7eo?@,
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); m[pzu2R
} WJ*DWyd''
} `uj`ixcR
} S]>_o "|HV
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} d<Di;5
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冒泡排序: Ou%>Dd5|?
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package org.rut.util.algorithm.support; a
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import org.rut.util.algorithm.SortUtil; jc<3\ 7
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/** cg~FW2Q
* @author treeroot U
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* @since 2006-2-2 ;,1i,?
* @version 1.0 k|V{jBG"@
*/ 5c#L6 dA)
public class BubbleSort implements SortUtil.Sort{ b}
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/* (non-Javadoc) q)[gVL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;H^!yj5H
*/ 4Zq5
public void sort(int[] data) { Xw%z#6l
int temp;
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for(int i=0;i for(int j=data.length-1;j>i;j--){ oOlI*/OMb
if(data[j] SortUtil.swap(data,j,j-1); okYsjK5
} JeA}d
} }oG&zw
} mNJB0B};m
} 0ePZxOSjD
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} L,<.rr$:
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选择排序: J L3A/^
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package org.rut.util.algorithm.support; V)`?J)
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import org.rut.util.algorithm.SortUtil; +G~b-}
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/** X[w9~t$\
* @author treeroot jmIP c3O0
* @since 2006-2-2 QNo}nl/N
* @version 1.0 pmS=$z;I
*/ m0 P5a%D
public class SelectionSort implements SortUtil.Sort { fq(e~Aqw$
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/* /~yqZD<O
* (non-Javadoc) &jJgAZ!
* q\,H9/.0k
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T:ck/:ZH
*/ 5HU>o|.
public void sort(int[] data) { 2{&" 3dq
int temp; $=bN=hE
for (int i = 0; i < data.length; i++) { pUmB
h
int lowIndex = i; yE7pCgXt
for (int j = data.length - 1; j > i; j--) { Np<Aak
if (data[j] < data[lowIndex]) { ^Z!W3q Q
lowIndex = j; I/tzo(r
} jsR1jou6
} \ Q6Ip@?
SortUtil.swap(data,i,lowIndex); =k_u5@.Z
} K!9=e7|P
} m$^7sFD$
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} L.R
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Shell排序: +)|2$$m
D >mLSh
package org.rut.util.algorithm.support; ;f><;X~KX
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import org.rut.util.algorithm.SortUtil; U +]ab
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/** i ]_fh C
* @author treeroot a'\`Mi@rb
* @since 2006-2-2 QV't+)uUVo
* @version 1.0 y`BLIEI
*/ "7l}X{b
public class ShellSort implements SortUtil.Sort{ 7Ct m({I-
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/* (non-Javadoc) )#Id2b~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UJZa1p@L
*/ {R#nGsrt;
public void sort(int[] data) { IP >An8+
for(int i=data.length/2;i>2;i/=2){ :!/}*B
for(int j=0;j insertSort(data,j,i); @iaN@`5I6s
} N>~*Jp2;
} fSTEZH
insertSort(data,0,1); nuQ"\ G
} ij TtyTC
M *}$$Fe|
/** =_XcG!"
* @param data 1#@'U90xf
* @param j e7;]+pN]J
* @param i sJD"u4#y
*/ giTlXz3D9
private void insertSort(int[] data, int start, int inc) { ABSeX
int temp; &M2x`
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); RBb@@k[v
} saZ;ixV
} Y7p#K<y]9
} 0I
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} ?SpI^Wn)[
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快速排序: F 6Ol5
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package org.rut.util.algorithm.support; %cv%u6 b
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import org.rut.util.algorithm.SortUtil; R|vF*0)>W
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/** <omz9d1
* @author treeroot ks{s
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* @since 2006-2-2 :Cuae?O,
* @version 1.0 ,lUo@+
*/ J]N}8 0
public class QuickSort implements SortUtil.Sort{ K{iYp4pU
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/* (non-Javadoc) #:yZJS9f9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nO/5X>A,Zw
*/ <@yyx7
public void sort(int[] data) { vxgm0ZOMN
quickSort(data,0,data.length-1); ~\^8
^
} rB)WHx<
private void quickSort(int[] data,int i,int j){ uZ^i8;i
int pivotIndex=(i+j)/2; L`!sV-.
file://swap I@\{6hw
SortUtil.swap(data,pivotIndex,j); 9xz`V1mIL
ZO`d
int k=partition(data,i-1,j,data[j]); {kzM*!g
SortUtil.swap(data,k,j); V^ :\/EU
if((k-i)>1) quickSort(data,i,k-1); DXiD>1(q
if((j-k)>1) quickSort(data,k+1,j); zf!c
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} qkEy$[D9
/** gV7o
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* @param data q8D1MEBL`
* @param i [brrziZ
* @param j @!S$gTz
* @return EAI[J&c
*/ :K~7BJ(HO
private int partition(int[] data, int l, int r,int pivot) { WZMsmhU@T
do{ iO@wqbg$6
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ^Nu} HcC+
SortUtil.swap(data,l,r); (UM+?]Qwy
} #i,O
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while(l SortUtil.swap(data,l,r); Jq!($PdA
return l; `Ctj]t
} HlO+^(eX
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} NX;&V7
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改进后的快速排序: w7C=R8^
o#Y1Uamkf
package org.rut.util.algorithm.support; 1Y`MJ\9
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import org.rut.util.algorithm.SortUtil; 9f@)EKBK
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/** +u#x[xO
* @author treeroot vZxy9Wmc
* @since 2006-2-2 0jmlsC>
* @version 1.0 ?m!FM:%
*/ .jKO 6f
public class ImprovedQuickSort implements SortUtil.Sort { 1-n0"lP~4
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private static int MAX_STACK_SIZE=4096; /<C=9?Ok
private static int THRESHOLD=10; IlrmXSr
/* (non-Javadoc) ' 4"L;){:L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W1s|7
*/ s,RS}ek~|
public void sort(int[] data) { 3:gk:j#
int[] stack=new int[MAX_STACK_SIZE]; 5Zov<+kE
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int top=-1; BCbW;w8aI
int pivot; /[s$A?
int pivotIndex,l,r; u"%fz8v
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stack[++top]=0; GyCpGP|AZ
stack[++top]=data.length-1; kr?|>6?
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while(top>0){ -'(:Sq,4o
int j=stack[top--]; (}:xs,Ax
int i=stack[top--]; U]acm\^Z
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pivotIndex=(i+j)/2; #cs!`Ngb+
pivot=data[pivotIndex]; N_<n$3P\?f
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SortUtil.swap(data,pivotIndex,j); uv5@Alm
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file://partition fCfY.vd5
l=i-1; m";gD[m
r=j; D6t]E)FH
do{ ;w>B}v;RE
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); <wC1+/]
SortUtil.swap(data,l,r); yiOF&
} ^kq! /c3r
while(l SortUtil.swap(data,l,r); R4/@dA0
SortUtil.swap(data,l,j); Ir'f((8:
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if((l-i)>THRESHOLD){ a|NU)mgEI
stack[++top]=i; iCS/~[
stack[++top]=l-1; H]e 2d|
} \a!<^|C&
if((j-l)>THRESHOLD){ {aSq3C<r
stack[++top]=l+1; lg1D>=(mY
stack[++top]=j; S&*pR3,u
} j66@E\dN
)B_h"5X4\y
} zvD5i,I
file://new InsertSort().sort(data); f/yK|[g~
insertSort(data); >UMnItq(l
} )sHPIxHI
/** =m:W
* @param data 7r>W r#
*/ DFonK{
private void insertSort(int[] data) { Zux2VepT
int temp; U ~m.I
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); zMKL: Um"
} (a?Ip)`I
} =S,<yQJ
} U4gwxK
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} ;j=1 oW
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归并排序: ui1m+
RHbwq]
package org.rut.util.algorithm.support; w.f[)
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import org.rut.util.algorithm.SortUtil; $b} +5
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/** i"xDQ$0G6
* @author treeroot %a `dOEO
* @since 2006-2-2 k:Q<Uanc[
* @version 1.0 3:Wr)>l}#
*/ gwJu&HA/
public class MergeSort implements SortUtil.Sort{ I>aa'em
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/* (non-Javadoc) Q_.Fw\l$`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F S:WbFmc
*/ vEGK{rMA
public void sort(int[] data) { "=.|QKC1`
int[] temp=new int[data.length]; 5ov%(QI
mergeSort(data,temp,0,data.length-1); :(Bi{cw
} ^~l<N@
(rn x56I$
private void mergeSort(int[] data,int[] temp,int l,int r){ lQ"i]};<D
int mid=(l+r)/2; L:-lqag!
if(l==r) return ; s`RJl V
mergeSort(data,temp,l,mid); '9@R=#nd
mergeSort(data,temp,mid+1,r); "[yiNJ"kt
for(int i=l;i<=r;i++){ k#xpY!'7
temp=data; *\", qMp
} 8BDL{?Mu
int i1=l; GwBQ
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int i2=mid+1; |T *qAJ8c
for(int cur=l;cur<=r;cur++){ R:N-y."La.
if(i1==mid+1) +ctv]'P_
data[cur]=temp[i2++]; K5&C}Ey1
else if(i2>r) LnS>3$t*
data[cur]=temp[i1++]; MFuI&u!g:
else if(temp[i1] data[cur]=temp[i1++];
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else /MH@>C
_
data[cur]=temp[i2++]; Z"X*FzFo
} 8
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} VsEAo
JxJ ntsn
} +_P
2S
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改进后的归并排序: Z;D3lbqE
S8m&Rj3O&
package org.rut.util.algorithm.support; PDng!IQ^
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import org.rut.util.algorithm.SortUtil; y>|XpImZ
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/** 3:lp"C51
* @author treeroot nX%'o`f
* @since 2006-2-2 EG4bFmcs
* @version 1.0 [t{#@X
*/ %PbqASm
public class ImprovedMergeSort implements SortUtil.Sort { \[1CDz=}1
r:4IKuTR
private static final int THRESHOLD = 10; E2'e}RQ
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/* J5_Y\@
* (non-Javadoc) WG} CPkj
* K- C-+RB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [[h)4H{T
*/ 9X9zIh]JV
public void sort(int[] data) { QYXx7h r=$
int[] temp=new int[data.length]; 'hw@l>1\9
mergeSort(data,temp,0,data.length-1); 5l0rw)
} O7'3}P;
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private void mergeSort(int[] data, int[] temp, int l, int r) { NP'Ke:
int i, j, k; t<,p-TM]
int mid = (l + r) / 2; g4a X
if (l == r) G D{fXhgk
return; kDY]>v
if ((mid - l) >= THRESHOLD) `yX+NRi(s
mergeSort(data, temp, l, mid); eZ5}O0sfp
else T,2Dr;
insertSort(data, l, mid - l + 1); 2%C5P0;QX
if ((r - mid) > THRESHOLD) % W',c u
mergeSort(data, temp, mid + 1, r); R+VLoz*J6
else \Rqh|T<D
insertSort(data, mid + 1, r - mid); =^y{@[p`(
Z !25xqNCd
for (i = l; i <= mid; i++) { p6*a1^lU6
temp = data;
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} u;ooDIq@
for (j = 1; j <= r - mid; j++) { ^.kAZSgO
temp[r - j + 1] = data[j + mid]; ZQ-`l:G
} qbq<O %g=
int a = temp[l]; VfqY_NmgC
int b = temp[r]; a {$k<@Ww
for (i = l, j = r, k = l; k <= r; k++) { 0k0c
if (a < b) { " IkF/
data[k] = temp[i++]; i2a"J&,6O
a = temp; L_1_y, 0N
} else { 1 lCikS^c
data[k] = temp[j--]; Jo aDX ,
b = temp[j]; |\n)<r_
} #IhLpO
} qL5#.bR
} ;AGs1j
3k*:B~1
/** :CST!+)o
* @param data *8X9lv.Z
* @param l \.;ct
* @param i =>}.W:=
*/ dwbY"t[9
private void insertSort(int[] data, int start, int len) { *RbOQ86vP
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ph12x: @B
} ]n]uN~)9
} 7M#$: Fdb
} NQiecxvt=
} l9NOzAH3
D7WI(j\
堆排序: l&??2VO/t
K*U=;*p)
package org.rut.util.algorithm.support; gLSG:7m@
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import org.rut.util.algorithm.SortUtil; ?I2k6%a
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/** Fr3d#kVR
* @author treeroot pG F5aF7T
* @since 2006-2-2 .1}rzh}8
* @version 1.0 ]AZ\5C-J
*/ M`+e'vdw
public class HeapSort implements SortUtil.Sort{ !P60[*>
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/* (non-Javadoc) H")N_BB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SeNF!k% Y
*/ .W@4vrp@
public void sort(int[] data) { K[LVT]3 n
MaxHeap h=new MaxHeap(); q"LJwV}W
h.init(data); y }&4HrT&
for(int i=0;i h.remove(); <% 7P
System.arraycopy(h.queue,1,data,0,data.length); }y-;>i#m=g
} ^0x.'G?
bg1"v a#2
private static class MaxHeap{ F;Q_*0mIQ
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void init(int[] data){ `mKlv~$1^
this.queue=new int[data.length+1]; > 0Twr
for(int i=0;i queue[++size]=data; BsK|:MM]
fixUp(size); aFr!PQp4{
} k99gjL`
} b1+hr(kMRM
9oje`Ay
private int size=0; #7~tL23}]
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private int[] queue; J|"nwY}a9
x ?f0Hk+
public int get() { Z.aLk4QO@
return queue[1]; Q k;Kn
} *qO]v9 j
i{|lsd(+
public void remove() { %uz|NRB=
SortUtil.swap(queue,1,size--); AFINm%\/0
fixDown(1); KcmDF4C2
} 8_<&f%/
file://fixdown esh$*)1
private void fixDown(int k) { u 5Eo
int j; z{`6#
while ((j = k << 1) <= size) { zJfK4o
if (j < size %26amp;%26amp; queue[j] j++; B-\,2rCC Z
if (queue[k]>queue[j]) file://不用交换 OK
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break; z)&naw.
SortUtil.swap(queue,j,k); 4/HY[FT
k = j; D%;wVnUw
} %
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} A#Q0{z@H
private void fixUp(int k) { Ox7uG{t$#
while (k > 1) { --
i&"
int j = k >> 1; @Xq&t}*8
if (queue[j]>queue[k]) 7wiK.99
break; l$qStL*8O
SortUtil.swap(queue,j,k); YeRcf`
k = j; .K|P&
} BN\fv,
} i>tW|N
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} a9D gy_!Y
VMxYZkMNd_
} C!ZI&cD9
tp1KP/2w[
SortUtil: (XbMrPKG
zdLVxL>87
package org.rut.util.algorithm; 2I]]WBW#:
UM4@H1
import org.rut.util.algorithm.support.BubbleSort; #$rf-E5g-K
import org.rut.util.algorithm.support.HeapSort; 00`bL
import org.rut.util.algorithm.support.ImprovedMergeSort; kZU"Xn
import org.rut.util.algorithm.support.ImprovedQuickSort; B^i mG
import org.rut.util.algorithm.support.InsertSort; YW8K
$W
import org.rut.util.algorithm.support.MergeSort; W>p\O9BG
import org.rut.util.algorithm.support.QuickSort; 5E]UI YAkV
import org.rut.util.algorithm.support.SelectionSort; hi ;WFyJTu
import org.rut.util.algorithm.support.ShellSort; <CNE>@-f
4NpHX+=P
/** T>\nWancQM
* @author treeroot %PQldPL8
* @since 2006-2-2 H_%d3 RI
* @version 1.0 [<D+pqh
*/ $:f.Krj
public class SortUtil { tk`: CT
*
public final static int INSERT = 1; 84[|qB,ML
public final static int BUBBLE = 2; 457fT |
public final static int SELECTION = 3; tXf}jU}
public final static int SHELL = 4; CDQJ bvx
public final static int QUICK = 5; I;Al?&uw
public final static int IMPROVED_QUICK = 6; \yih 1Om>~
public final static int MERGE = 7; U9<_6Bsd
public final static int IMPROVED_MERGE = 8; _-@ZOhw&
public final static int HEAP = 9; n\Z^K
tv 4s12&
public static void sort(int[] data) { Fy 4Tvg
sort(data, IMPROVED_QUICK); *oEv ,I_
} `j"4:
private static String[] name={ ?gd'M_-J,
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" z6p#fsD
}; -]Q3/"Q
%$/=4f.j
private static Sort[] impl=new Sort[]{ D-Bv(/Pz]$
new InsertSort(), 51&|t#8h
new BubbleSort(), I`/]@BdgY
new SelectionSort(), dzgs%qtK
new ShellSort(), PzIy">plm
new QuickSort(), R&NpdW N
new ImprovedQuickSort(), 4|zd84g
new MergeSort(), b%3Q$wIJ6
new ImprovedMergeSort(), W:`5nj]H9
new HeapSort() 6b%`^B\
}; nHI(V-E2:H
`[X6#`<
public static String toString(int algorithm){ f|X[gL,B
return name[algorithm-1];
P7}t lHX
} lP}o[Rd
8BHL
public static void sort(int[] data, int algorithm) { F`fGz)Mk
impl[algorithm-1].sort(data); ,"@w>WL<9
} Vn)%C_-]A
i%xI9BO9
public static interface Sort { MPjr_yc]
public void sort(int[] data); hA@zoIoe
} nped
lN);~|IOv7
public static void swap(int[] data, int i, int j) { PASuf.U$"
int temp = data; d-hbvLn
data = data[j]; XXXljh6
data[j] = temp; j'k8^*M6
} L5R `w&Up
} ;JAK[o8i