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。 WjBH2 v
插入排序: |It&1fz}
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package org.rut.util.algorithm.support; >,ABE2t5
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import org.rut.util.algorithm.SortUtil; i}e/!IVR3
/** LGK&&srJs
* @author treeroot 4T]A!
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* @since 2006-2-2 ]!]B7|JFJ
* @version 1.0 klAvi%^jE
*/ '|<r[K
public class InsertSort implements SortUtil.Sort{ .}5qi;CA
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/* (non-Javadoc) BNgm+1?L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z=TOGP(
*/ |- <72$j
public void sort(int[] data) { w^9< I]
int temp; E{P94Phv
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); G8zbb
} 7p-
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} -'F27])
} ,D'm#Fti
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} 9}_'
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冒泡排序: )HcLpoEi
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package org.rut.util.algorithm.support; W^7yh&@lU
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import org.rut.util.algorithm.SortUtil; f@gvDo]Y
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/** @?jtB
* @author treeroot )FSEHQ
* @since 2006-2-2
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* @version 1.0 +|x{?%.O
*/ G`;\"9t5h
public class BubbleSort implements SortUtil.Sort{ z%1e>`\E
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/* (non-Javadoc) [mQdc?n\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y/5(BK)
*/ MsZx 0]
public void sort(int[] data) { $o0.oY#
int temp; N/'8W9#6
for(int i=0;i for(int j=data.length-1;j>i;j--){
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if(data[j] SortUtil.swap(data,j,j-1); 'N^*,
} :+
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} 1]9w9!j
} :T|9;2
} 6$0<&')Yb
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} tJ7F.}\;C
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选择排序: UCXRF
jABFdNjri
package org.rut.util.algorithm.support; SME9hS$4
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import org.rut.util.algorithm.SortUtil; 4l{$dtKbI
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/** 1Q!kk5jE
* @author treeroot rB{w4
* @since 2006-2-2 &4+|{Zx0
* @version 1.0 0b/@QgJ
*/ {bADMj1
public class SelectionSort implements SortUtil.Sort { }n
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/* alB'l
* (non-Javadoc) Aix6O=K6
* :<mJRsDf
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F+GX{e7E\
*/ wdAKU+tM
public void sort(int[] data) { }O>4XFj
int temp; E
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for (int i = 0; i < data.length; i++) { 1r};cY6
int lowIndex = i; k s\q^ten
for (int j = data.length - 1; j > i; j--) { _5H~1G%q
if (data[j] < data[lowIndex]) { (~%NRH<\
lowIndex = j; [u$|/
} tjwnFqI
} D(;+my2
SortUtil.swap(data,i,lowIndex); 6^t#sEff]
} 6%h%h: e
} Ov<c1y;f
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} $8i`h}AM
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Shell排序: NuSdN>8ll
G<=I\T'g;
package org.rut.util.algorithm.support; Y<u%J#'[
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import org.rut.util.algorithm.SortUtil; dq@
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/** 1
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* @author treeroot 4].o:d;`/
* @since 2006-2-2 Ow*va\0
* @version 1.0 5'eBeNxM
*/ bhGRD{=
public class ShellSort implements SortUtil.Sort{ _/z_
X
:IBP "
/* (non-Javadoc) jL8A_'3B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9 " t;6
*/ z@,(^~C_
public void sort(int[] data) { ||Owdw|{
for(int i=data.length/2;i>2;i/=2){ X'<RqvDc5
for(int j=0;j insertSort(data,j,i); OdZ/ \_Z
} %qz-b.
} <" nWGF4d
insertSort(data,0,1); br
Iz8]
} l?2
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/** =1dczJHV
* @param data 05k'TqT{c
* @param j #O!2
* @param i z,$uIv}'@
*/ S6(48/
private void insertSort(int[] data, int start, int inc) { 'G~i;o 2
int temp; 2I}+AW!!=
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ,*U-o}{8C?
} 717THci3Y
} [ i,[^
} E"_{S.Wc
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} x'|9A?ez@Z
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快速排序: $x`HmL3Sb
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package org.rut.util.algorithm.support; 3e;|KU
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import org.rut.util.algorithm.SortUtil;
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/** vR:#g;mnk
* @author treeroot %6 Av1cv
* @since 2006-2-2 s|H7;.3gp
* @version 1.0 &"JC8
*/ yQUrHxm
public class QuickSort implements SortUtil.Sort{ s`H|o'0
K=o {
/* (non-Javadoc) __xmn{{L6P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o]4BST(A
*/ .pWRV<25
public void sort(int[] data) { b#p0s?*
quickSort(data,0,data.length-1); &hkD"GGe
} .tLRY
private void quickSort(int[] data,int i,int j){ v~Dobk/n
int pivotIndex=(i+j)/2; a'|]_`36x
file://swap [KYq01cj
SortUtil.swap(data,pivotIndex,j); P$Vh{]4i{
fsPNxy"_
int k=partition(data,i-1,j,data[j]); ^8~TsK~
SortUtil.swap(data,k,j); 8 <;.[l
if((k-i)>1) quickSort(data,i,k-1); DvQV_D
if((j-k)>1) quickSort(data,k+1,j); DJgM>&Y6,
`Wjq$*
} rgCC3TX
/** ] 9C)F*r7
* @param data fqbeO 9x
* @param i )cRHt:
* @param j 7F>]zrbK
* @return kVM*[<k
*/ XrTc5V
private int partition(int[] data, int l, int r,int pivot) { CHv
n8tk
do{ ]^.`}Y=`g
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); *~6]IWN`
SortUtil.swap(data,l,r); q`{@@[/(y
} w9GY/]
while(l SortUtil.swap(data,l,r); 75^*4[
return l; Gdb0e]Vt+
} 5)S;R,
8aVQW_m}
} #aC&!Rei{
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改进后的快速排序: D9NRM;v
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package org.rut.util.algorithm.support; *!"T^4DEg
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import org.rut.util.algorithm.SortUtil; ufR>*)_+
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/** O}cfb4"
* @author treeroot _){u5%vv
* @since 2006-2-2 cwaR#-#
* @version 1.0 2i!R>`
*/
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public class ImprovedQuickSort implements SortUtil.Sort { I:=!,4S;
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private static int MAX_STACK_SIZE=4096; ;:[P/eg
private static int THRESHOLD=10; {`2 0'
/* (non-Javadoc) V?JmIor
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Pfvb?Hy
*/ E{JTy{z-
public void sort(int[] data) { M^WoV
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int[] stack=new int[MAX_STACK_SIZE]; |n,O!29
i=b'_SZ'
int top=-1; "[["naa
int pivot; 9mMQ
int pivotIndex,l,r; C'A
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stack[++top]=0; !K*3bY`#
stack[++top]=data.length-1; :jTbzDqQ
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while(top>0){ b4$.uLY
int j=stack[top--]; !?i9fYu
int i=stack[top--]; 2xuU[
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pivotIndex=(i+j)/2; cqh1,h$sG
pivot=data[pivotIndex]; =u9e5n
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SortUtil.swap(data,pivotIndex,j); X%*BiI
fvTp9T\f3
file://partition ]OKKR/:
l=i-1; b9.7j!W
r=j; u8A,f}D 3
do{ 8[^b8^
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); E]a,2{&8<
SortUtil.swap(data,l,r); j
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} DP*V|)
while(l SortUtil.swap(data,l,r); r
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SortUtil.swap(data,l,j); tx1TtWo
_pS)bxw
if((l-i)>THRESHOLD){ d<\X)-"
stack[++top]=i; +BI%.A`2
stack[++top]=l-1; 'SG<F,[3
} -t`KCf,0
if((j-l)>THRESHOLD){ fH,h\0
stack[++top]=l+1; !h1|B7N
stack[++top]=j; =hh,yi
} \@ZD.d#
q,Nqv[va
} P6^\*xkMr
file://new InsertSort().sort(data); ezJ^
r,D|
insertSort(data); #c<F,` gdi
} [e. `M{(TB
/** u`+kH8#
* @param data /6N!$*8
*/ /WAOpf5
private void insertSort(int[] data) { `a7b,d
int temp; %I)*5 M6
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); O'~^wu.
} Sf`?j
} ]Ah<kq2sk
} &s.-p_4w^D
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} "\afIYS I
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归并排序: QA!'p1{#
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package org.rut.util.algorithm.support; Q;2kbVWY
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import org.rut.util.algorithm.SortUtil; v>Kv!OY:c
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/** |oOA;JC)(
* @author treeroot pi*?fUg!W
* @since 2006-2-2 [DSzhi]
* @version 1.0 jA%R8hdr_
*/ 8`b_,(\ N
public class MergeSort implements SortUtil.Sort{ @q" #.?>s
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/* (non-Javadoc) /LCRi
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HFj@NRE6
*/ QbAEWm
public void sort(int[] data) { UD]RWN
int[] temp=new int[data.length]; );z/
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mergeSort(data,temp,0,data.length-1); 9@p+g`o
} g7LS
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private void mergeSort(int[] data,int[] temp,int l,int r){ .)=j~}\
int mid=(l+r)/2; 6CWm;%B#G
if(l==r) return ; ( v=Z$#l
mergeSort(data,temp,l,mid); Mg^3Y'{o
mergeSort(data,temp,mid+1,r); \" =@uqar2
for(int i=l;i<=r;i++){ `Yu4h+T
temp=data; 8bEii1EM
} Ria*+.k@"B
int i1=l; ]:]w+N%7
int i2=mid+1; <m?/yREK2
for(int cur=l;cur<=r;cur++){ QW@`4W0F
if(i1==mid+1) xOpCybmc
data[cur]=temp[i2++]; 1FEY&rpR
else if(i2>r) s\1c.
data[cur]=temp[i1++]; N^tH&\G\m
else if(temp[i1] data[cur]=temp[i1++]; a: OuDjFp
else h IUO=f
data[cur]=temp[i2++]; ^pa -2Ao6
} bcprhb
} o{
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KA0_uty/T
} uQg&A`4
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改进后的归并排序: IY9##&c3>
ZNbb8v
package org.rut.util.algorithm.support; 4^BHJOvs
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import org.rut.util.algorithm.SortUtil; wn{DY
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/** .3T#:Hl
* @author treeroot > 1&_-
* @since 2006-2-2 6m{1im=
* @version 1.0 =arrp:
*/ olf7L%
public class ImprovedMergeSort implements SortUtil.Sort { wTY8={p]
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private static final int THRESHOLD = 10; 7q _.@J
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/* l+8G6?@]>
* (non-Javadoc) !@-g9z
* K F`@o@,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zz+[]G+"2m
*/ "@)9$-g
public void sort(int[] data) { 3DO
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int[] temp=new int[data.length]; Bl)DuCV
mergeSort(data,temp,0,data.length-1); }xM >F%
} p8MPn>h<
7vs>PV
private void mergeSort(int[] data, int[] temp, int l, int r) { U*6)/.J
int i, j, k; -gKo@I
int mid = (l + r) / 2; g>O
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if (l == r) o}K!p%5_
return; S+(-k0
if ((mid - l) >= THRESHOLD) Od:,r
mergeSort(data, temp, l, mid); #\fxU:z~r
else GE[J`?E]
insertSort(data, l, mid - l + 1); #!X4\+)
if ((r - mid) > THRESHOLD) }EZd=_kAq~
mergeSort(data, temp, mid + 1, r); 9nPc>O$
else ^.@BD4/RPt
insertSort(data, mid + 1, r - mid); hzjEO2
2aUy1*aM
for (i = l; i <= mid; i++) { !*C9NX
temp = data; <);Nc1
} $R[ggH&
for (j = 1; j <= r - mid; j++) { AR-&c 3o
temp[r - j + 1] = data[j + mid]; Xy(o0/7F9
} u`vOKajpH$
int a = temp[l]; 7R=cxD&
int b = temp[r]; -?$Hr\
for (i = l, j = r, k = l; k <= r; k++) { z!GLug*j`
if (a < b) { )N4_SA
data[k] = temp[i++]; _ *O^|QbM
a = temp; +5+?)8Ls
} else { n^AQ!wC
data[k] = temp[j--]; 5L}qL?S`x|
b = temp[j]; zLxO\R!d
} "NamP\hj
} hkq[xgX
} ZsPT!l,
=i/7&gC
/** uxd5 XS
* @param data 5xawa:K
* @param l (ft8,^=4
* @param i >wpC45n)9N
*/ X^U)j
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private void insertSort(int[] data, int start, int len) { j[fVF3v
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); QM
}TPE
} b!R\ u1b
} U
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} 5@6%/='I q
} Wm/0Y'$r&k
*L3>:],7
堆排序: bI,gNVN=
B9RB/vHH
package org.rut.util.algorithm.support; ;U=RV&
.'y]Ea
import org.rut.util.algorithm.SortUtil; !Rzw[~
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/** 8_S<zE`Ha
* @author treeroot 0OndSa,
* @since 2006-2-2 <4{,u1!t
* @version 1.0 p<2A4="&
*/ t@TBx=16
public class HeapSort implements SortUtil.Sort{ '@ym-\,
w7?&eF(w(
/* (non-Javadoc) &ESE?{of)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]iyJ>fC
*/ ESl-k2
public void sort(int[] data) { u2SnL$A7
MaxHeap h=new MaxHeap(); v^ a.
b
h.init(data); gm63dE>
for(int i=0;i h.remove(); Q}a 1P8?S
System.arraycopy(h.queue,1,data,0,data.length); 5m`@ 4%)zp
} WdGjvs
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private static class MaxHeap{ 5{Xld,zw
J3oj}M*
void init(int[] data){ DL5`A?/
this.queue=new int[data.length+1]; 9nFPGIz+
for(int i=0;i queue[++size]=data; Z)6gh{B08
fixUp(size); s!Xj'H7K
} J?WT
} Z^w}: {
!}D!_z,)u
private int size=0; GB1[`U%
uM\(#jZ
private int[] queue; m/)Wn
pv.0!a/M
public int get() { =gCv`SFW
return queue[1]; bY4~\cP.
} 3d^zLL
2Rc'1sCth-
public void remove() { xD}ha
SortUtil.swap(queue,1,size--); =y; tOdj
fixDown(1); W_NQi
} )SMS<J
file://fixdown %t&5o>1C
private void fixDown(int k) { AR i_m
int j; fA!uSqR$V
while ((j = k << 1) <= size) { .u3!%{/v(c
if (j < size %26amp;%26amp; queue[j] j++; wz-9+VN6
if (queue[k]>queue[j]) file://不用交换 0f).F
break; $= '_$wG
8
SortUtil.swap(queue,j,k); KJ]:0'T
k = j; N#-P}\Q9
} ;?>xuC$
} +1j@n.)ft
private void fixUp(int k) { [-)N}rL>
while (k > 1) { (Yz EsY
int j = k >> 1; _cqBp7
if (queue[j]>queue[k]) 1us-ootsjP
break; yIBT*,4
SortUtil.swap(queue,j,k);
c}a.
k = j; *Z! #6(G
} 'k=GSb
} A2{u("^[6
=@U~sl[
} sgdxr!1?y
b[<zT[.:
} DGl_SMJb
4^T@n$2N
SortUtil: S) /(~
TFbMrIF
package org.rut.util.algorithm; <StyO[
G992{B
import org.rut.util.algorithm.support.BubbleSort; !/W[6'M#p
import org.rut.util.algorithm.support.HeapSort; *ip2|2G$
import org.rut.util.algorithm.support.ImprovedMergeSort; 8=rD'*
import org.rut.util.algorithm.support.ImprovedQuickSort; e_Na_l]
import org.rut.util.algorithm.support.InsertSort; 3 8>?Z]V
import org.rut.util.algorithm.support.MergeSort; X/
import org.rut.util.algorithm.support.QuickSort; YGP.LR7
import org.rut.util.algorithm.support.SelectionSort; TAbd[:2{F
import org.rut.util.algorithm.support.ShellSort; CeD O:J=,
c:0nOP
/** ) -+u8#
* @author treeroot !424K-nW
* @since 2006-2-2 ^nu~q+:+#
* @version 1.0 \|\Dc0p}
*/ -POV#1s
public class SortUtil { |^K-m42
public final static int INSERT = 1; 0xbx2jlkY
public final static int BUBBLE = 2; L~_3BX
public final static int SELECTION = 3; b4GD}kR
public final static int SHELL = 4; %xtTh]s
public final static int QUICK = 5; a?bSMt}
public final static int IMPROVED_QUICK = 6; }W{rDc kv
public final static int MERGE = 7; $2Y'[Dto\
public final static int IMPROVED_MERGE = 8; ^z#'o
public final static int HEAP = 9; p._BG80
V!#+Ti/w4
public static void sort(int[] data) { :<ye:P1s
sort(data, IMPROVED_QUICK); %|L+~ =
} B#RwW,
private static String[] name={ j(4BMk
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" rQ -pD
}; 0 1U/{D6D
^&oa\7<'
private static Sort[] impl=new Sort[]{ 5gnNgt~
new InsertSort(), 8)IpQG
new BubbleSort(), Z?k4Kb
new SelectionSort(), H!Gsu$C
new ShellSort(), +uMOT#KjR
new QuickSort(), pPt7M'uL"
new ImprovedQuickSort(), %n-:mSus
new MergeSort(), ]-d:wEj
new ImprovedMergeSort(), ?N2/;u>
new HeapSort() %~ uMa
}; n82N@z<8]
+ yX\!H"
public static String toString(int algorithm){ fHTqLYd-
return name[algorithm-1]; 9%e&Z'l
} >S4klW=*I
pI2g\cH>
public static void sort(int[] data, int algorithm) { LaL.C^K
impl[algorithm-1].sort(data); o7"2"(
=>
} mJT<
+g8wc(<ik
public static interface Sort { HMyw:?
public void sort(int[] data); ?;!d5Xuu
} UELni,$
OQ&?^S`8',
public static void swap(int[] data, int i, int j) { \ .HX7v
int temp = data; <k)@PAV
data = data[j]; //63?s+
data[j] = temp; 1:]iV}OFqR
} ^R.kThG
} rYUhGmg`