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。 ;8A_-$
插入排序: /; _"A)0
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package org.rut.util.algorithm.support; \KEL.}B9E
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import org.rut.util.algorithm.SortUtil; lRrOoON
/** V6!oe^a7'
* @author treeroot #qPk ,a
* @since 2006-2-2 ^b%AwzHH}
* @version 1.0 1/gh\9h
*/ 3drgB;:g`
public class InsertSort implements SortUtil.Sort{ Y5;:jYk#<_
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/* (non-Javadoc) ?]})Xf.A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [AU1JO`\"
*/ M:x8]TA
public void sort(int[] data) { Q=dR[t>^
int temp; l`1ZS8 [.
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \h
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} 1?*vqdt
} "}!vYr
} * T-XslI
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} &O'yhAP] j
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冒泡排序: #*~ (
l})uYae/
package org.rut.util.algorithm.support; \!%3giD5!
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import org.rut.util.algorithm.SortUtil; 2q#$?qs_b
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/** []Z6<rC|
* @author treeroot 4jXyA/F9V
* @since 2006-2-2 FPqgncBHK
* @version 1.0 Op|Be
*/ BG|Kw)z*KM
public class BubbleSort implements SortUtil.Sort{ WcdU fv(>
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/* (non-Javadoc) H 95VU"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hIdGQKr>V
*/ A[b'MNsv
public void sort(int[] data) { x&f?c=\F
int temp; cO<x:{`
for(int i=0;i for(int j=data.length-1;j>i;j--){ ZF`ckWT:-N
if(data[j] SortUtil.swap(data,j,j-1); -AbA6_j
} <sPB|5Ak
} Z?b.
PC/
} 9/'j<v6M
} Mn=_lhWK
b w cPY
} /r)d4=1E
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选择排序: /E*P0y~KTW
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package org.rut.util.algorithm.support; TKmC/c
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import org.rut.util.algorithm.SortUtil; ljk-xC p/
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/** s0\X%U("
* @author treeroot j\ )Qn2r
* @since 2006-2-2 -?GYW81Q
* @version 1.0 Lrk^<:8;
*/ Xc@4(Nyp
public class SelectionSort implements SortUtil.Sort { jHFdDw|N`
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/* FY
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* (non-Javadoc) B
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* VA]%i P,O-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) is6JS^Q
*/ ZJx:?*0a
public void sort(int[] data) { Q8P;AN_JS
int temp; 2.|Y
for (int i = 0; i < data.length; i++) { *z(.D\{%
int lowIndex = i; 3Y=S^*ztd
for (int j = data.length - 1; j > i; j--) { dCc*<S
if (data[j] < data[lowIndex]) {
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lowIndex = j; ';
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} JY /Cd6\
} f",B;C
SortUtil.swap(data,i,lowIndex); u2DsjaL
} MF& +4$q
} F'Wef11Yz
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} Z{e5 OJ
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Shell排序: 7`P(LQAr!
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package org.rut.util.algorithm.support; ;z&p(e
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import org.rut.util.algorithm.SortUtil; a
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/** 04,]upC${W
* @author treeroot 0z,c6MjM+
* @since 2006-2-2 $bN%x/
* @version 1.0 / ]I]
*/ lte~26=e
public class ShellSort implements SortUtil.Sort{ B^KC~W
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/* (non-Javadoc) zJ#q*2A(Z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 643 O(0a
*/ ysSEgC3
public void sort(int[] data) { Q:%gJ6pa
for(int i=data.length/2;i>2;i/=2){ <8H`y(S
for(int j=0;j insertSort(data,j,i); [ jafPi(#g
} c|I{U[(U
} :FK(*BUh
insertSort(data,0,1); V+E2nJ
} ost~<4~
hLBX,r)u
/** }|x]8zL8G
* @param data (0Y6tcV]R
* @param j d,$[633It}
* @param i Vls*fY:W
*/ Um*{~=;u
private void insertSort(int[] data, int start, int inc) { M34*$>bk
int temp; Z EG
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); u<):gI
} k8w8I$QEM
} (/Nw
} z<)?8tAgq
TG'A'wXxy
} ;Ni+TS
b`1P%OjC
快速排序: h v9s
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package org.rut.util.algorithm.support; @!K)(B;A0b
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import org.rut.util.algorithm.SortUtil; ]x~H"<V
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/** rU(N@i%
* @author treeroot lQ@2s[
* @since 2006-2-2 c~p4M64
* @version 1.0 R$v{ p[
*/ &x\u.wIa
public class QuickSort implements SortUtil.Sort{ {GZHD^Ce
/SZsXaC '
/* (non-Javadoc) F%L^k.y$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bPiJCX0d
*/ tz2`X V{
public void sort(int[] data) { ='YR;
quickSort(data,0,data.length-1); fNQ.FAK":
} FJ~Dg3F1
private void quickSort(int[] data,int i,int j){ VNaa(Q
int pivotIndex=(i+j)/2; tZ4W]od
file://swap U
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SortUtil.swap(data,pivotIndex,j); $T~|@XH
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int k=partition(data,i-1,j,data[j]); qksN {t
SortUtil.swap(data,k,j); *"4
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if((k-i)>1) quickSort(data,i,k-1); ;Q-(tGd
if((j-k)>1) quickSort(data,k+1,j); (%\N-[yZ
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} O+c@B}[!
/** m
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* @param data =XyK/$
* @param i fM d]P:B
* @param j )7:2v1Xr]
* @return .}2^YOmd
*/ C$Ldz=d
private int partition(int[] data, int l, int r,int pivot) { |f.=Y~aY
do{ Trm)7B*
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ?GX5Pvg
SortUtil.swap(data,l,r); |Q.t]TR'P
} w#]%I+
while(l SortUtil.swap(data,l,r); mG\,T3/*
return l; hyFq>XFo
} ^D"}OQoh
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} Rm"lRkY4I[
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改进后的快速排序: Hz!+g'R!Gs
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package org.rut.util.algorithm.support; /6b(w=pk
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import org.rut.util.algorithm.SortUtil; 8gr&{-5
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/** J3g>#N]='(
* @author treeroot U*1rA/"n
* @since 2006-2-2 rB)m{)
* @version 1.0 'GS1"rkW<5
*/ A\k@9w\Ll;
public class ImprovedQuickSort implements SortUtil.Sort { % ;09J
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private static int MAX_STACK_SIZE=4096; %TvunV7NQS
private static int THRESHOLD=10; DSD#',
/* (non-Javadoc) \snbU'lfP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H>a3\M
*/
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public void sort(int[] data) { 3Ud&B
int[] stack=new int[MAX_STACK_SIZE]; 'R99kL/.N
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int top=-1; |l`X]dsfQ
int pivot; R84g<
int pivotIndex,l,r; 2-. g>'W
}mk9-7
stack[++top]=0; fw'$HV76
stack[++top]=data.length-1; NhS0D=v6
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while(top>0){ m},nKsO
int j=stack[top--]; wnN@aO6g*
int i=stack[top--]; 9c4 6|
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pivotIndex=(i+j)/2; qdjRw#LS^q
pivot=data[pivotIndex]; m>jX4D7KZ
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SortUtil.swap(data,pivotIndex,j); Xo;J1H
[P`Q_L,+
file://partition #c./<<P5}
l=i-1; _T<ney}Y<
r=j; >5i1M^g(
do{ m%'9z L c
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); HkGzyDt
SortUtil.swap(data,l,r); g=:%j5?.e
} jrvhTej
while(l SortUtil.swap(data,l,r); av&dGsFP
SortUtil.swap(data,l,j); 9Or3X/:o
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if((l-i)>THRESHOLD){ w1h07_u;v
stack[++top]=i; "u3
stack[++top]=l-1; >/ECLP
} 'h([Y8p{
if((j-l)>THRESHOLD){ f@Hp,-
stack[++top]=l+1; Bm;{dO
stack[++top]=j; XGk8Ki3w
} ^4`q%_vm
EAqTXB@XU
} vFV->/u
file://new InsertSort().sort(data); N"2P&Ho]
insertSort(data); hm&{l|u{RU
} kS8srT
/H
/** vWXj6}
* @param data sO~N2
*/ 1W"9u
private void insertSort(int[] data) { JU1U=Lu."
int temp; _Oh;._PS
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _|g(BK2}
} Xa Yx avq
} H7H'0C
} Gg{@]9
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} >8#(GXnSt
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归并排序: ec)G~?FH
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package org.rut.util.algorithm.support; ^{zwIH2I]
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import org.rut.util.algorithm.SortUtil; 0/#XUX 4
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/** O_FT@bo\
* @author treeroot .KIAeCvl\
* @since 2006-2-2 Q4Hf!v]r
* @version 1.0 pz:$n_XC}
*/ 9 %,_G.
public class MergeSort implements SortUtil.Sort{ `Z{;
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/* (non-Javadoc) ;#G>q o
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rM2?"
*/
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public void sort(int[] data) { !-|&
int[] temp=new int[data.length]; d9R0P2
mergeSort(data,temp,0,data.length-1); yaa+j8s]
} =9LC"eI&|
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private void mergeSort(int[] data,int[] temp,int l,int r){ 3`5?Zgp
int mid=(l+r)/2; 3BKW
if(l==r) return ; Ad+-/hxc
mergeSort(data,temp,l,mid); bsR^H5O@
mergeSort(data,temp,mid+1,r); ^8
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for(int i=l;i<=r;i++){ 'i%Azzv
temp=data; 13}=;4O
} ~g;(`g
int i1=l; #:"\6s
int i2=mid+1; \I/l6H>o3
for(int cur=l;cur<=r;cur++){
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if(i1==mid+1) a^)7&|$ E
data[cur]=temp[i2++]; eOZA2
else if(i2>r) \$yI'q
data[cur]=temp[i1++]; 7: J6 F
else if(temp[i1] data[cur]=temp[i1++]; 23U9+
else BYhPOg[
data[cur]=temp[i2++]; $*MjNj2
} /7h}_zs6
} n'ZlIh
c5mv4 MC
} &pZ]F=.r+
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改进后的归并排序: U@BVVH?,o
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package org.rut.util.algorithm.support; gA`/t e
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import org.rut.util.algorithm.SortUtil; Ud*.[GRD~
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/** $_S^Aw?
* @author treeroot 4Qz
* @since 2006-2-2 ~*L H[l>K
* @version 1.0 R
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*/ lh(A=hn"n
public class ImprovedMergeSort implements SortUtil.Sort { 5u~Ik c~
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private static final int THRESHOLD = 10; P+%O]v1 Ob
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/* x1|5q/I
* (non-Javadoc) oQjh?vm
* pn{.oXomf
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $qP9EZ]JC
*/ s,]6Lri`\
public void sort(int[] data) { 6$%]p1"!K
int[] temp=new int[data.length]; jQ%}e"
mergeSort(data,temp,0,data.length-1); FnvN 4h{S
} .: 87B=
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private void mergeSort(int[] data, int[] temp, int l, int r) { w^A8ZT0^7
int i, j, k; |jEKUTv,G
int mid = (l + r) / 2; yXg783B|v
if (l == r) yJ/m21f
return; YV.*8'*
if ((mid - l) >= THRESHOLD) ;}.jRmnJ
mergeSort(data, temp, l, mid); !}l)okQH<#
else ",#rI+ el
insertSort(data, l, mid - l + 1); wZE[we^Q"
if ((r - mid) > THRESHOLD) RLw=y{%p
mergeSort(data, temp, mid + 1, r); D<5gdIw
else /U N%P2>^1
insertSort(data, mid + 1, r - mid); '/z.\ S
sN5x\9U
for (i = l; i <= mid; i++) { NV36Q^Am[
temp = data; HTQ.kV
} eq(|%]a=
for (j = 1; j <= r - mid; j++) { |>j=#2
temp[r - j + 1] = data[j + mid]; 4{}u PbS
} NO`LSF
int a = temp[l]; '?_I-="Mr
int b = temp[r]; AY[7yPP
for (i = l, j = r, k = l; k <= r; k++) { [9'5+RXw3
if (a < b) { Dr7,>Yx
data[k] = temp[i++]; v;JY;Uh|
a = temp; m-, '
} else { Z!wDh_
data[k] = temp[j--]; ##}a0\x|
b = temp[j]; d0MX4bhZ
} IR5 S-vO
} $ daI++v`
} KD-0NO=oL
i:qc2#O:J
/** BL]!j#''KE
* @param data yoGE#+|7^
* @param l vQc>jmS+n
* @param i ]9R?2{"K
*/ K~x G+Kh
private void insertSort(int[] data, int start, int len) { 5c'rnMW4+p
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); QTcngv[
} R?Iv<(I
} $v-lG(
} &fiDmUxj
} 4y>G6TD^
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堆排序: B,e@v2jO|
cvn,&G-`
package org.rut.util.algorithm.support; SY>N-fW\H:
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import org.rut.util.algorithm.SortUtil;
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/** CSt6}_c!
* @author treeroot 1V FAfv%}
* @since 2006-2-2 m4>v S
* @version 1.0 _$MoMg{uJH
*/ + #S]uC
public class HeapSort implements SortUtil.Sort{ Kqhj=B
ZZ[5Z=te?
/* (non-Javadoc) <%qbU-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9#O"^.Z !
*/ "%,zB_ng\<
public void sort(int[] data) { b:Rl }"a
MaxHeap h=new MaxHeap(); %#/7Tl:
h.init(data); nzhQ\'TC
for(int i=0;i h.remove(); rf1-E5 7#
System.arraycopy(h.queue,1,data,0,data.length); i]8zZRe
} yK{ ;72
p1J%=
private static class MaxHeap{ J[VQ6fD%
|\~cjPX(
void init(int[] data){ P/M*XUG.
this.queue=new int[data.length+1]; Bi?.G7>
for(int i=0;i queue[++size]=data; _4[kg)#+
fixUp(size); Vi5RkUY]
} 8$?a?7,>|
} N{|N_}X`Y
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private int size=0; VdVca1Z
^hY<avi6s
private int[] queue; u'Mq^8
+]5JXt^
public int get() {
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return queue[1]; AHn^^'&x[
} s )~Q@ze2
_F,@mQ$!
public void remove() { 7F)HAbIS
SortUtil.swap(queue,1,size--); h %MPppCEa
fixDown(1); ?>4^e:
} .$99/2[90
file://fixdown !. q*bY
private void fixDown(int k) { s7a\L=#p(
int j; DX4
95<6*
while ((j = k << 1) <= size) { =1`
if (j < size %26amp;%26amp; queue[j] j++; k9yA#
if (queue[k]>queue[j]) file://不用交换 O?8G
break; 47ir QK*
SortUtil.swap(queue,j,k); eR8h4M~O
k = j; Q'$aFl'NR
} zzq/%jki
} ?w3f;v
private void fixUp(int k) { z'fGHiX7.0
while (k > 1) { t?YGGu^
int j = k >> 1; olK%TM[Y
if (queue[j]>queue[k]) .hETqE` E
break; 3<'SnP3mY
SortUtil.swap(queue,j,k); KY2xKco
k = j; '=%vf
} |_!xA/_U'T
} )|Y"^K%Jm
7CrWsQl u
} ==UH)o`?8
XXxX;xz$
} 9-}&znLZe
/PHktSG
SortUtil: * k=Pk
JMO"(?
package org.rut.util.algorithm; ]%shs
3&x_%R
import org.rut.util.algorithm.support.BubbleSort; @kI^6(.
import org.rut.util.algorithm.support.HeapSort; Jw;J$
u!d
import org.rut.util.algorithm.support.ImprovedMergeSort; i1|-
import org.rut.util.algorithm.support.ImprovedQuickSort; ffuV$#
import org.rut.util.algorithm.support.InsertSort; l EQn2+
import org.rut.util.algorithm.support.MergeSort; V1#/+~
import org.rut.util.algorithm.support.QuickSort; t=A|
K
import org.rut.util.algorithm.support.SelectionSort; Wc-P= J*m
import org.rut.util.algorithm.support.ShellSort; mP3:Fc_G
bLaD1rnGi
/** l3l[jDa, 2
* @author treeroot [dOPOA/d
* @since 2006-2-2 F4">go
* @version 1.0 ]2K>#sn-]
*/ nCXIWLw
public class SortUtil { 2 B5kpmH:
public final static int INSERT = 1; @f{)]I +f
public final static int BUBBLE = 2; SGjaH8z
public final static int SELECTION = 3; -pa.-@
public final static int SHELL = 4; w7w$z_P
public final static int QUICK = 5; I:AlM?
public final static int IMPROVED_QUICK = 6; NWX~@Rg
public final static int MERGE = 7; s)xfTr_$
public final static int IMPROVED_MERGE = 8; cZ^$!0
public final static int HEAP = 9; +w GE
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public static void sort(int[] data) { vEn12s(lj
sort(data, IMPROVED_QUICK); 3lA<{m;V
} k{"~G#GwP
private static String[] name={ ZNG.W0{p
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" |Q.?<T:wt=
}; /$I&D}uR`
F
N(&3Ull
private static Sort[] impl=new Sort[]{ ,ulTZV
new InsertSort(), X o{Ce%L
new BubbleSort(), 4?72TBl]
new SelectionSort(), CF =#?+x
new ShellSort(), N#]f?6*R
new QuickSort(), <NT /+>:2
new ImprovedQuickSort(), _xUiHX<
new MergeSort(), >N+e c_D^
new ImprovedMergeSort(), Y5PIR9 -
new HeapSort() zS|%+er~zO
}; !=q {1\#
%o+bO}/9
public static String toString(int algorithm){ _Ndy;MQ
return name[algorithm-1]; w#XE!8`
} 49HtI9@
Q.M3rRh
public static void sort(int[] data, int algorithm) { K& 2p<\2
impl[algorithm-1].sort(data); ruF+X)
} <(#cPV@j
b\]"r x
(
public static interface Sort { E(]yjZ/
public void sort(int[] data); IO]Oo3
} |w /txn8G|
*~2jP;$
public static void swap(int[] data, int i, int j) { iT9cw`A^%
int temp = data; bLSI\
data = data[j]; ?aO%\<b
data[j] = temp; _lyP7$[:
c
} %aL>n=$
} My_fm?n