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。 jRatm.N
插入排序: YID4w7|
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package org.rut.util.algorithm.support; ?R$&Xe!5
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import org.rut.util.algorithm.SortUtil; mml
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/** P67o{EdK
* @author treeroot 5scEc,JCi
* @since 2006-2-2 B-r0"MX&
* @version 1.0 LCQE_}Mh
*/ fj&i63?e
public class InsertSort implements SortUtil.Sort{ %'T #pz
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/* (non-Javadoc) "]G\9b)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9HX =T%
*/ S.a%
public void sort(int[] data) { iJ~Vl"|m
int temp; GQ-Rtn4v
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); nWHa.H#
} Km^&<3ch#
} ,\@O(;
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} J4\ qEO
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} znHnVYll(
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冒泡排序: %!1Q P[}K
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package org.rut.util.algorithm.support; `ta7Gc/:UY
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import org.rut.util.algorithm.SortUtil; fYW6b[lI
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/** 28=O03q
* @author treeroot w[ ~#av9
* @since 2006-2-2 6VhjJJ
* @version 1.0 y
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*/ k]I0o)+O.
public class BubbleSort implements SortUtil.Sort{ nb>7UN.9
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/* (non-Javadoc) -(b kr+N
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9rA=pH%<>B
*/ 1u9LdkhnY
public void sort(int[] data) { p"U,G
-_
int temp; vz!s~cAt
for(int i=0;i for(int j=data.length-1;j>i;j--){ h3;bxq!q
if(data[j] SortUtil.swap(data,j,j-1); k|!EDze43?
} NrJKbk^4u/
} d0,s"K7@
} ~JH:EB:
} Xp}Yw"7
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} ~appY Av
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选择排序: @n": w2^B
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package org.rut.util.algorithm.support; piZJJYv t
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import org.rut.util.algorithm.SortUtil; }3L@J8:D"
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/** ^) s2$A:L
* @author treeroot lO_UPC\@fw
* @since 2006-2-2 %p0xM
* @version 1.0 "%x<ttLl
*/ a 7,C>%I
public class SelectionSort implements SortUtil.Sort { AoI/n4T^
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/* `FC(
* (non-Javadoc) Kc^;vT>3
* *C:|X b<9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @Rw!'T
*/ c7FRI0X
public void sort(int[] data) { :EA\)@^$R
int temp; "l*`>5Nn9
for (int i = 0; i < data.length; i++) { `kJ^zw+
int lowIndex = i; `{xNXH]@
for (int j = data.length - 1; j > i; j--) { aUtnR<6
if (data[j] < data[lowIndex]) { GF^071]G
lowIndex = j; 4%3Mb-#Y]
} QhK#Y{xY
} =>! Y{:
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SortUtil.swap(data,i,lowIndex); '^"6+ k
} }B.H|*uO
}
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xcf%KXJf6
} oGRhnP'PF+
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Shell排序: G-.^O,%
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package org.rut.util.algorithm.support; 5EebPXBzB
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import org.rut.util.algorithm.SortUtil; 8UVmv=T
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/** 9b*nLyYVz
* @author treeroot 6<ZkJ:=
* @since 2006-2-2 o$Z6zm xO
* @version 1.0 O~^"
*/ IDG}ZlG
public class ShellSort implements SortUtil.Sort{ McQe1
1cD! :[
/* (non-Javadoc) 2FW\O0U
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9amaL~m
*/ C-H@8p?T
public void sort(int[] data) { 5)MS~ii
for(int i=data.length/2;i>2;i/=2){ <fFTY130:
for(int j=0;j insertSort(data,j,i); dp*u9z~NA
} N
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} mA=i)Ga
insertSort(data,0,1); &@yo;kB
} W!>.$4Q9
k|H:
/** 6gs01c,BA
* @param data |]X
* @param j 9Q+'n$s0^
* @param i la+[bm<v
*/ 9AJ7h9L
private void insertSort(int[] data, int start, int inc) { b8LLr;oQw
int temp; >\Ww;1yV
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); O6G0
} ] A+?EE2/
} d >t<_}
} D
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} _<OSqE
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快速排序: @0u~?!g@
l|k`YC x
package org.rut.util.algorithm.support; /
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import org.rut.util.algorithm.SortUtil; ^kB8F"X
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/** Ls] g
* @author treeroot u2?|Ue@[
* @since 2006-2-2 0p!>JQ]m
* @version 1.0 _zwG\I|Q
*/ j+,d^!
public class QuickSort implements SortUtil.Sort{ @-!}BUs?
suzZdkMA
/* (non-Javadoc) 65aK2MS@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uW}s)j.
*/ !*%WuyCgr4
public void sort(int[] data) { 4k@5/5zsM
quickSort(data,0,data.length-1); /Y7<5!cS
} PU^l.
private void quickSort(int[] data,int i,int j){ --c"0,7
int pivotIndex=(i+j)/2; sv&;Y\2c
file://swap ub\MlSr
SortUtil.swap(data,pivotIndex,j); z-.+x3&o @
6U R2IxbE
int k=partition(data,i-1,j,data[j]); 9vvx*rD
SortUtil.swap(data,k,j); W)f/0QX}W
if((k-i)>1) quickSort(data,i,k-1); YLzx<~E4a
if((j-k)>1) quickSort(data,k+1,j); W1|0Yd ;P
K#=*9S
} EH!
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/** +2&@x=xy
* @param data a+Kj1ix
* @param i
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* @param j tAv@R&W,
* @return t~#zMUfac
*/ mSb#Nn6W
private int partition(int[] data, int l, int r,int pivot) { Ke2ccN
do{ \Yc'~2n
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 0,89H4
SortUtil.swap(data,l,r); f>UXD
} E(8*
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while(l SortUtil.swap(data,l,r); +>{Y.`a;Jo
return l; pw)||Q
} uJC~LC N
lY?QQ01D
} G?;e-OhV
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改进后的快速排序: 6MT1$7|P&x
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package org.rut.util.algorithm.support; #0P$M!%
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import org.rut.util.algorithm.SortUtil; v{ 0=
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/** e'~J,(fB
* @author treeroot 5?3Me59
* @since 2006-2-2 b2OQtSr a
* @version 1.0 IpcNuZo9&
*/ lE&&_INHQ
public class ImprovedQuickSort implements SortUtil.Sort { /2=#t-p+
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,
private static int MAX_STACK_SIZE=4096; 0+kH:dP{
private static int THRESHOLD=10; { +
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/* (non-Javadoc) Pa
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '+?"iVVo
*/ ZK@N5/H(
public void sort(int[] data) { 0"\H^
int[] stack=new int[MAX_STACK_SIZE]; @M_oH:GV
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int top=-1; Rld!,t
int pivot; y)W@{@{kl
int pivotIndex,l,r; ~,oMz<iMV
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stack[++top]=0; gT0BkwIV
stack[++top]=data.length-1; [BqHx5Xz(
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while(top>0){ r0+6evU2
int j=stack[top--]; 6/r)y+H
int i=stack[top--]; +#lM
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pivotIndex=(i+j)/2; pgE}NlW
pivot=data[pivotIndex]; -ZRO@&tMD
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SortUtil.swap(data,pivotIndex,j); -- %N8L;e
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file://partition M42Ssn)
l=i-1; K1\a#w
r=j; @Z\,q's
do{ ][9%Kl*%@p
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); JGsx_V1t
SortUtil.swap(data,l,r); 1DE<rKI
} 2.l Z:VLN
while(l SortUtil.swap(data,l,r); ^Eb.:}!D6
SortUtil.swap(data,l,j); O4cr*MCb5
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if((l-i)>THRESHOLD){ jv%kOovj
stack[++top]=i;
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stack[++top]=l-1; {=!b/l;@
} QLEKsX7p>
if((j-l)>THRESHOLD){ t>urc
stack[++top]=l+1; :U3kW8;UMP
stack[++top]=j; qln3 k`
} |"/8XA
%_RQx2
} x7:s]<kE
file://new InsertSort().sort(data); C)@y5. G;
insertSort(data); gcPTLh[^Er
} TarIPp
/** ]*
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* @param data j.w@(<=x
*/ 5q;GIw^L
private void insertSort(int[] data) {
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int temp; GqaDL3Niqs
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _wkVwPr
}
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} %l}D. ml
} f]`#J%P
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} q)S^P>
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归并排序: oX S1QT`B
gQxbi1!;9
package org.rut.util.algorithm.support; Bm.:^:&k
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import org.rut.util.algorithm.SortUtil; w)kNkD
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/** tD(7^GuR
* @author treeroot VY;{/.Sa
* @since 2006-2-2 OjJXysslXO
* @version 1.0 h|VeG3H
*/ 1zm ulj%&
public class MergeSort implements SortUtil.Sort{ Z~oo;xE
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/* (non-Javadoc) 'IZI:V"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B$ajK`x&I
*/ %Y<| ;0v
public void sort(int[] data) { 0-HqPdjR
int[] temp=new int[data.length]; -Zf@VW,NI
mergeSort(data,temp,0,data.length-1); ;aI[=?<x
} 6*B1 9+-
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private void mergeSort(int[] data,int[] temp,int l,int r){ 2N~Fg^xB
int mid=(l+r)/2; m?pstuUK(
if(l==r) return ; "HElB9
mergeSort(data,temp,l,mid); -(bXSBs#
mergeSort(data,temp,mid+1,r); 7'Zky2F
for(int i=l;i<=r;i++){ KIui(n#/
temp=data; - }7e:!.
} ej4W{IN~:
int i1=l; {QHVo#
int i2=mid+1; 5p<ItU$pnL
for(int cur=l;cur<=r;cur++){ qq) rd
if(i1==mid+1) I/d&G#:~
data[cur]=temp[i2++]; x }\64
else if(i2>r) k7?N ?7w
data[cur]=temp[i1++]; }.3nthgz
else if(temp[i1] data[cur]=temp[i1++]; ^?cz,N~
else lE;Ewg
data[cur]=temp[i2++]; k9 "[H'
} uD1e!oU
} cik!GA
"!Uqcay-
} x(hE3S#+
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改进后的归并排序: iVp,e
K/tRe/t}
package org.rut.util.algorithm.support; 6-yd]("
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import org.rut.util.algorithm.SortUtil; U1DXeh~V
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/** ROg(U8
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* @author treeroot 0fb`08,^
* @since 2006-2-2 ?u/@PR\D
* @version 1.0 pP*zq"o
*/ dx;Ysn0-
public class ImprovedMergeSort implements SortUtil.Sort { o.w\l\
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private static final int THRESHOLD = 10; f!oT65Vmi
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/* [`{Z}q&
* (non-Javadoc) SSz~YR^}Sr
* bvv|;6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xC*6vH]?
*/ ),U X4%K=
public void sort(int[] data) { Gb8D[1=u=
int[] temp=new int[data.length]; ,4zmb`dP<
mergeSort(data,temp,0,data.length-1); mQCeo}7N5
} WFO4gB*
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x,
private void mergeSort(int[] data, int[] temp, int l, int r) { xIxn"^'
int i, j, k; sm0x LZ
int mid = (l + r) / 2; 5b!vgm#])
if (l == r) |zQ4u
return; P;P%n
if ((mid - l) >= THRESHOLD) g .onTFwN
mergeSort(data, temp, l, mid); lJu;O/
else J?Ra bYd ~
insertSort(data, l, mid - l + 1); KNS.Nw7
if ((r - mid) > THRESHOLD) jX3,c%aQ5e
mergeSort(data, temp, mid + 1, r); *of3:w
else JRSSn] pw
insertSort(data, mid + 1, r - mid); +?u~APjNN
q#vQv5
for (i = l; i <= mid; i++) { RA KFU
temp = data; d]:I(9K
} w8kOVN2b
for (j = 1; j <= r - mid; j++) { ]$Yvj!K*Q
temp[r - j + 1] = data[j + mid]; Fs{x(_LOr
} q;<h[b?
int a = temp[l]; _CW(PsfY
int b = temp[r]; :uWw8`
for (i = l, j = r, k = l; k <= r; k++) { v}1QH
if (a < b) { \^ZlG.
data[k] = temp[i++]; P%{^ i]
a = temp; 1QLbf*zeIW
} else { |+iws8xK?
data[k] = temp[j--]; GliwY_
b = temp[j]; k.uMp<)D
} zaah^.MA|
} MYla OT
} 5]n[]FW
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/** FrTi+& <
* @param data AWP"b?^G|
* @param l k`0>36
* @param i A%`[mc]4#
*/ ep2k%?CX 1
private void insertSort(int[] data, int start, int len) { G'6@+$ppS
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); o$w_Es]Ma
} Z&|Kki*
} :?/cPg'D
} 8-BflejX
} gW-V=LV (
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堆排序: a"FCZ.O1
BReJ!|{m}
package org.rut.util.algorithm.support; =&,]Z6{>
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import org.rut.util.algorithm.SortUtil; kuol rfGB
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/** tS|(K=$
* @author treeroot fjU8gV
* @since 2006-2-2 ,=Mt`aN
* @version 1.0
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*/ }
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public class HeapSort implements SortUtil.Sort{ `}mcEl
K Pt5=a
/* (non-Javadoc) byTh/ H
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Olh<,p+x
*/ i(iXD
public void sort(int[] data) { "f "6]y
MaxHeap h=new MaxHeap(); o| #Qu8Lk
h.init(data); c
)G3k/T5
for(int i=0;i h.remove(); 4WJ.^ (
System.arraycopy(h.queue,1,data,0,data.length); qMLD)rL
} dR"@`
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private static class MaxHeap{ '=Rs/EDME
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void init(int[] data){ 8Le||)y,\
this.queue=new int[data.length+1]; (>r[-Bft
for(int i=0;i queue[++size]=data; <-[wd.M_
fixUp(size); pov)Z):}G<
} gLy&esJl1
} m06ALD_
{buo^kgj`]
private int size=0; B)qWtMZx
k&,~qoU
private int[] queue; M7@2^G]p
^R# E:3e
public int get() { I~ok4L?VB
return queue[1]; 3+ @<lVew6
} tD+9kf2
=zKhz8B(
public void remove() { ApAO/q
SortUtil.swap(queue,1,size--); :E:38q,hG
fixDown(1); 1`a5C.v
} C!fMW+C@
file://fixdown BFo5\l:q8
private void fixDown(int k) { LUqB&,a}
int j; [[;e)SoA
while ((j = k << 1) <= size) { 6f\Lf?vF
if (j < size %26amp;%26amp; queue[j] j++; 0a}u;gt,4w
if (queue[k]>queue[j]) file://不用交换 jpO7'ivG
break; BK,{N0
SortUtil.swap(queue,j,k); =5kY6%E7c
k = j; Mz~M3$$9n
} OoA|8!CFa
} aFS,GiB
private void fixUp(int k) { )XYv}U
while (k > 1) { fSs4ZXC
int j = k >> 1; yF"1#{*y
if (queue[j]>queue[k]) =y0C1LD+
break; H;YP8MoQ
SortUtil.swap(queue,j,k); J2'Nd'
k = j; WJ4li@T7V
} /f|X(docI
} [3{W^WSOz
]Bjyi[#bg
} XpBj%e:
PfC!lI
BU
} I?ae\X@M
%Ti}CwI`
SortUtil: kPF9Z "l
(Q.waI
package org.rut.util.algorithm; T>R0T{A
FW/W%^
import org.rut.util.algorithm.support.BubbleSort; STxKE %l
import org.rut.util.algorithm.support.HeapSort; 9J9)AV
import org.rut.util.algorithm.support.ImprovedMergeSort; fjs
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import org.rut.util.algorithm.support.ImprovedQuickSort; f"qga/
import org.rut.util.algorithm.support.InsertSort; 6WU(%
import org.rut.util.algorithm.support.MergeSort; SVO 3821
import org.rut.util.algorithm.support.QuickSort; 8]M_z:F7F
import org.rut.util.algorithm.support.SelectionSort; \E%'Y
import org.rut.util.algorithm.support.ShellSort; E
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S"OR%
/** ]3KhgK%c8
* @author treeroot CS==A57I
* @since 2006-2-2 S$Q8>u6Wk
* @version 1.0 v?&
-xH-S
*/ 763v
public class SortUtil { :9$F'd\
public final static int INSERT = 1; Q4f/Z
public final static int BUBBLE = 2; Hhari!RXC
public final static int SELECTION = 3; 2@%$;.
public final static int SHELL = 4; n~A%q,DmF
public final static int QUICK = 5; x)rM/Kq
public final static int IMPROVED_QUICK = 6; {j:hod@-:5
public final static int MERGE = 7; W!?7D0q
public final static int IMPROVED_MERGE = 8; Db;G@#x
public final static int HEAP = 9; YRh BRE
Y6Lf@}2(i
public static void sort(int[] data) { (fCXxyZrr
sort(data, IMPROVED_QUICK); mo[Zb0>
}
?sMP~RHQ
private static String[] name={ 6y6<JR-V2k
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 2Fq<*pxAY
}; BPdfYu,il
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private static Sort[] impl=new Sort[]{ Y0_),OaY
new InsertSort(), )FpZPdN+h
new BubbleSort(), V{^!BBQ
new SelectionSort(), V??dYB(
new ShellSort(), u"d~!j1
new QuickSort(),
'+$EhFwD
new ImprovedQuickSort(), }lfnnK#
new MergeSort(), dVsE^jsL
new ImprovedMergeSort(), $ep.-I>
new HeapSort() {|1Y:&M?
}; .8y3O]
F@<CsgKB-
public static String toString(int algorithm){ ad:&$
return name[algorithm-1]; 49w=XJ
} KN7n@$8YM
%oq[,h
<X
public static void sort(int[] data, int algorithm) {
*X,
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impl[algorithm-1].sort(data); @ ]/AjjLt
} %Mk0QKzUo
Zxbo^W[[
public static interface Sort { #1c_ev H
public void sort(int[] data); H
Ge0hl[n
} DM}YJ
D;_ MPN[
public static void swap(int[] data, int i, int j) { AKRTBjG"
int temp = data; /6h(6 *JI
data = data[j]; US%^#D q
data[j] = temp; DXa-rk8
} ~R&;v3
} #_(jS+lP?k