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。 J>+\a1{
插入排序: Hxy=J
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package org.rut.util.algorithm.support; [c;0eFSi2
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import org.rut.util.algorithm.SortUtil; cjtcEW
/** 1Z?uT[kR
* @author treeroot oNYFbZw
* @since 2006-2-2 Vo[.^0
* @version 1.0 cSv;HN:
*/ E3{kH
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public class InsertSort implements SortUtil.Sort{ Vug[q=i
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/* (non-Javadoc) &hZ.K"@7{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ ]):>9q$C
public void sort(int[] data) { 'Hj([N
int temp; fg,vTpBk
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <}.!G>X
} 45BpZ~-
} +_ 8BJ
} 3xRn
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} }s"].Xm^2
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冒泡排序: nxEC6Vh'
b%x=7SMXO
package org.rut.util.algorithm.support; XL44pE
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import org.rut.util.algorithm.SortUtil; [uJS.`b
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/** W@zxGH$z>
* @author treeroot 2^=.f?_YR
* @since 2006-2-2 `tuGy}S2
* @version 1.0 U)iBeYW:
*/ .i )n1
public class BubbleSort implements SortUtil.Sort{ E:uTjXt
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/* (non-Javadoc) vV=rBO0a?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [5!{>L`
*/ GBBp1i
public void sort(int[] data) { N_FjEZpX
int temp;
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for(int i=0;i for(int j=data.length-1;j>i;j--){ [ns==gDD
if(data[j] SortUtil.swap(data,j,j-1); A!^r9 ?<
} JbitRV@a
} xFIzq
} s`G}MU
} `H9+]TWj<
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} <eS+3,
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选择排序: MOytxl:R
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package org.rut.util.algorithm.support; oO7)7$|1
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import org.rut.util.algorithm.SortUtil; NYKYj`K
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/** B7Zi|-F
* @author treeroot +~:OUR*>
* @since 2006-2-2 CRiqY_gBf
* @version 1.0 e\-,e+
*/ AuM}L&`i^
public class SelectionSort implements SortUtil.Sort { C%ZPWOc_8
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/* ^U*1_|Jh
* (non-Javadoc) (7&b)"y
* xh#pw2v7V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p/l">d]+
*/ ?|_i"*]l
public void sort(int[] data) { oLq N
int temp;
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for (int i = 0; i < data.length; i++) { RU/SJ1wM"
int lowIndex = i; I\M
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for (int j = data.length - 1; j > i; j--) { ]Nssn\X7
if (data[j] < data[lowIndex]) { TI2K_'
lowIndex = j; 2qV oe}F
} }}rp/16
} j0Cj&x%qF}
SortUtil.swap(data,i,lowIndex); tv~Y5e&8
} oxUBlye
} py%~Qz%
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} 48 0M|^
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Shell排序: &sYxe:H
xTH3g^E
package org.rut.util.algorithm.support; }7xcHVO8-
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import org.rut.util.algorithm.SortUtil; Wl+spWqW
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/** %\}5u[V
* @author treeroot 'mm>E
* @since 2006-2-2 #_K<-m%9
* @version 1.0 K3WaBcm
*/ _7qa~7?f
public class ShellSort implements SortUtil.Sort{ RE D@|[Qh
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/* (non-Javadoc) 19[!9ci
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MZWv#;.]
*/ 8^_e>q*W
public void sort(int[] data) { mH\2XG8nV
for(int i=data.length/2;i>2;i/=2){ J p^#G2
for(int j=0;j insertSort(data,j,i); 4b,+;
} L(k`1E
} ^
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insertSort(data,0,1); Eht8~"fj
} <9:~u]ixt
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/** H;q[$EUNb
* @param data 6hcK%0z
* @param j @o#Yq
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* @param i Nz*,m'-1e
*/ -II03 S1
private void insertSort(int[] data, int start, int inc) { l[%=S!
int temp; Lp4F1H2t-
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); lOe|]pQ.,
} P*U^,Jh<
} IGlyx'\_
} Y" rODk1
ZSD7%gE<D
} oQ*LP{M
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快速排序: voTP,R[}85
[f[Wz{Q#Y
package org.rut.util.algorithm.support; M"qS#*{
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import org.rut.util.algorithm.SortUtil; a<E9@
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/** -yBj7F|
* @author treeroot ^-|~c`&}B
* @since 2006-2-2 ^|hVFM2
* @version 1.0 SkCux
*/ pp7
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public class QuickSort implements SortUtil.Sort{ [gZR}E
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/* (non-Javadoc) JR&yaOws
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5v`lCu]
*/ :)T*:51{#
public void sort(int[] data) { 8K8jz9.s
quickSort(data,0,data.length-1); R?tjobk!
} + 660/ e8N
private void quickSort(int[] data,int i,int j){ (ov&iNx
int pivotIndex=(i+j)/2; "!eq~/nk
file://swap `CBXz!v!O
SortUtil.swap(data,pivotIndex,j); o61rTj
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int k=partition(data,i-1,j,data[j]); D/;[x{;E
SortUtil.swap(data,k,j); YTTij|(
if((k-i)>1) quickSort(data,i,k-1); G-R83Orl
if((j-k)>1) quickSort(data,k+1,j); bu $u@:q 6
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} ,w9|?%S
/** 2dHsM'ze
* @param data x'OP0],#
* @param i *
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* @param j +9pock
* @return DnG9bVm>
*/ z}Us+>z+jc
private int partition(int[] data, int l, int r,int pivot) { #T{)y
do{ ^Oeixi@f
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); v]H9`s#,
SortUtil.swap(data,l,r); '=\>n(%Q
} utl-#Wwt/
while(l SortUtil.swap(data,l,r); #sg
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return l; "68X+!
} cu'( Hj
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} o`7 Z<HF
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改进后的快速排序: T\=#y
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package org.rut.util.algorithm.support; (\r^0>H
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import org.rut.util.algorithm.SortUtil; 9vwm
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/** mE>{K
* @author treeroot E`hR(UL
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* @since 2006-2-2 euRKYGW
* @version 1.0 GRVF/hPn
*/ BSB&zp
public class ImprovedQuickSort implements SortUtil.Sort { mpVD;)?JmM
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private static int MAX_STACK_SIZE=4096; PlK3;
private static int THRESHOLD=10; 7zA+UWr
/* (non-Javadoc) [u^ fy<jdp
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {.[EX MX
*/ G-K{
public void sort(int[] data) { ^;9l3P{
int[] stack=new int[MAX_STACK_SIZE]; =n_z `I
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int top=-1; qN9 ?$\
int pivot; F7nwVDc*
int pivotIndex,l,r; F< 5kcu#iL
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stack[++top]=0; S#He OPRL
stack[++top]=data.length-1; )PYh./_2
%|^,Q -i,
while(top>0){ ?9!9lSH6%
int j=stack[top--]; H+]h+K9\7
int i=stack[top--]; 3/uvw>$
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pivotIndex=(i+j)/2; 5JK'2J&
pivot=data[pivotIndex]; %g89eaEZ
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SortUtil.swap(data,pivotIndex,j); 8faT@J'e;
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file://partition iQT0%WaHl
l=i-1; }~ N\A
r=j; Ea'jAIFPpO
do{ \/gf_R_GN
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); bb\XZ~)F
SortUtil.swap(data,l,r); 3 |LRb/|
} 8 4reyA
while(l SortUtil.swap(data,l,r); .3XiL=^~Qp
SortUtil.swap(data,l,j); rnp; R
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if((l-i)>THRESHOLD){ *O @Zn
stack[++top]=i; !b4AeiL>w
stack[++top]=l-1; @,;h!vB*=
} m|x_++3
if((j-l)>THRESHOLD){ |`Yn'Mj8rm
stack[++top]=l+1; {Oq8A.daJ
stack[++top]=j; Ruq>+ }4
} MU2kA&LH
PYs0w6o
} 0dS (g&ZR
file://new InsertSort().sort(data); ?m7i7Dz
insertSort(data); 2G!z/OAj
} 9HiyN>(
/** 4g}r+!T
* @param data 92.Rjz;=9?
*/ eT5IL(mH
private void insertSort(int[] data) { H\ E%.QIx
int temp; ?"<m {,yQI
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *zDDi(@vtK
} /-m)
} c;-NRvVb
} *B{]
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} ,_w}\'?L
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归并排序: f8qDmk5s
D+! S\~u
package org.rut.util.algorithm.support; =OV5DmVmQ
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import org.rut.util.algorithm.SortUtil; 4KSq]S.
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/** #.fJ
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* @author treeroot _s5FYb#
* @since 2006-2-2 D)l\zs%ie
* @version 1.0 vlZmmQeJm
*/ [q_62[-X
public class MergeSort implements SortUtil.Sort{ /L@o.[H
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/* (non-Javadoc) =A{'57yP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *)I^+zN
*/ >+.GBf<E
public void sort(int[] data) { Uam%u
int[] temp=new int[data.length]; UWS 91GN@
mergeSort(data,temp,0,data.length-1); m-;8O /
} }Y!s:w#
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private void mergeSort(int[] data,int[] temp,int l,int r){ F1B/cd
int mid=(l+r)/2; Q*1'k%7
if(l==r) return ; @p^EXc*|
mergeSort(data,temp,l,mid); q
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mergeSort(data,temp,mid+1,r); QJiH^KY6
for(int i=l;i<=r;i++){ u ysTyzx
temp=data; `'3 De(
} c(FGW7L<
int i1=l; -r_\=<(
int i2=mid+1; :"Tkl$@,
for(int cur=l;cur<=r;cur++){ 89{;R
if(i1==mid+1) uR.pQo07y<
data[cur]=temp[i2++]; V lO^0r^z
else if(i2>r) FV
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data[cur]=temp[i1++]; QHUFS{G]
else if(temp[i1] data[cur]=temp[i1++]; 'NfsAE
else 6-/W4L)?>
data[cur]=temp[i2++]; qvGmJN0
} COw!a\Jl
} "-MB U
4^nHq 4_
} (e!Yu#-
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改进后的归并排序: /n>vPJvz
G973n
package org.rut.util.algorithm.support; *14:^neoI
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import org.rut.util.algorithm.SortUtil; O:T
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/** |]?W`KN0
* @author treeroot 8f)pf$v`
* @since 2006-2-2 fi ~@J`
* @version 1.0 )t7MD(
*/ GVn'p
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public class ImprovedMergeSort implements SortUtil.Sort { 7
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private static final int THRESHOLD = 10; <
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/* xt"-Jmox
* (non-Javadoc) u(f;4`
* +|pYu<OY
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gae=+@z
*/ 5T( cy
public void sort(int[] data) { 7,Z<PE
int[] temp=new int[data.length]; ZHeq)5C ;f
mergeSort(data,temp,0,data.length-1); ZfVY:U:o>
} 6|3 X*Orn
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private void mergeSort(int[] data, int[] temp, int l, int r) { y x#ub-A8
int i, j, k; ev+H{5W8
int mid = (l + r) / 2; h?B1Emlq
if (l == r) !?+0O]`}
return; Xc"
%-
if ((mid - l) >= THRESHOLD) =OPX9oG
mergeSort(data, temp, l, mid); ! os@G
else > mJ`904L
insertSort(data, l, mid - l + 1); 'X6Y!VDd
if ((r - mid) > THRESHOLD) gE=9K @
mergeSort(data, temp, mid + 1, r); wS&D-!8v
else KECW~e`
insertSort(data, mid + 1, r - mid); di9OQ*6a7
5_L,7\5#
for (i = l; i <= mid; i++) { vZ$E
[EG}
temp = data; VGxab;#,:3
} .j|uf[?h
for (j = 1; j <= r - mid; j++) { /Qef[$!(
temp[r - j + 1] = data[j + mid]; .Z"`:4O
} /4;A.r`;
int a = temp[l]; I2SH
j6-
int b = temp[r]; o&z [d
for (i = l, j = r, k = l; k <= r; k++) { DS7L}]
if (a < b) { NW3qs`$-(
data[k] = temp[i++]; 8+".r2*_iO
a = temp; fB,eeT1v?h
} else { $ywROa]
data[k] = temp[j--]; 9b,0_IMHH
b = temp[j]; J:ka@2>|
} |r)QkxdU,
} V,'_BUl+x
} _j0xL{&&
rbIYLVA+V
/** afD {w*[8
* @param data p>3QW3<
* @param l a;-%C{S9r
* @param i I\c7V~^hnG
*/ ONy\/lu|
private void insertSort(int[] data, int start, int len) { E.ji;5
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); W ;+()vC
} Y}t)!}p$r
} XIZN9/;
} *o:J 4'
} vZ57
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堆排序: z#P`m,~t0
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package org.rut.util.algorithm.support; k\j_hu
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import org.rut.util.algorithm.SortUtil; %,
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/** birc&<
* @author treeroot -U
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* @since 2006-2-2 d8+@K&z|
* @version 1.0 dKU:\y
*/ Vky]In=
public class HeapSort implements SortUtil.Sort{ Kr1Y3[iNv
oz,.gP%
/* (non-Javadoc) Buh}+n2]5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `^'fS@VA
*/ *jPd=+d
public void sort(int[] data) { wQd8/&mmk
MaxHeap h=new MaxHeap(); %la1-r~
h.init(data); c?}G;$
for(int i=0;i h.remove(); 5kQ@]n:<k
System.arraycopy(h.queue,1,data,0,data.length); %0/qb0N&
} kTI5CoXzq
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private static class MaxHeap{ S^p^)
fAmF
&k)v/
void init(int[] data){ Kz/,V6H:
this.queue=new int[data.length+1]; S^==$TT
for(int i=0;i queue[++size]=data; mf{M-(6'
fixUp(size); ='4)E6ea?
} /EP
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} f_xvX f:
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private int size=0; |K{d5\_
c?. i;4yh
private int[] queue; w%X@os}E
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public int get() { (U#
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return queue[1]; 5p:BHw;%;
} IpSWg
YwF&-~mp7n
public void remove() { yZ)9Hd
SortUtil.swap(queue,1,size--); aT}Hc5L,b
fixDown(1); !vpXXI4
} Cj`~ntMN
file://fixdown +WMXd.iN,
private void fixDown(int k) { ;s3\Z^h4kd
int j; eiyr^Sch.
while ((j = k << 1) <= size) { GI,TE
if (j < size %26amp;%26amp; queue[j] j++; WG\
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if (queue[k]>queue[j]) file://不用交换 oA7DhU5n
break; 2@
9? ~?r
SortUtil.swap(queue,j,k); G/(,,T}eG
k = j; %D:VcY9OC
} S$$SLy:P
} #Ktk[ "6
private void fixUp(int k) { L97 ~ma
while (k > 1) { T`Up%5Dk
int j = k >> 1; BN%cX2j
if (queue[j]>queue[k]) %*npLDi
break; p}pd&ut1
SortUtil.swap(queue,j,k); wuYak"KX
k = j; &QW&K
} _6r[msH"
} 9s[
0!ZaR6
} `O0Qtq.
Ert={"Q
} !uIY ,
vWM&4|Q1~
SortUtil: 0,0Z!-Y
'Q :%s
package org.rut.util.algorithm; uYg Q?*Z
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import org.rut.util.algorithm.support.BubbleSort; /!?Tv8TPp
import org.rut.util.algorithm.support.HeapSort; ;|?_C8
import org.rut.util.algorithm.support.ImprovedMergeSort; @{_X@Wv4iV
import org.rut.util.algorithm.support.ImprovedQuickSort; 4;AQ12<[1
import org.rut.util.algorithm.support.InsertSort; (?^ F }]
import org.rut.util.algorithm.support.MergeSort; ^p9V5o
import org.rut.util.algorithm.support.QuickSort; Tsb}\
import org.rut.util.algorithm.support.SelectionSort; N wNxO
import org.rut.util.algorithm.support.ShellSort; \7*|u
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/** ]a&riPh"
* @author treeroot zx2`0%Q
* @since 2006-2-2 K\;4;6g
* @version 1.0 7.ein:M|CB
*/ MD<x{7O12>
public class SortUtil { n w`rH*
public final static int INSERT = 1; YsVKdh
public final static int BUBBLE = 2; <8kCmuGlk
public final static int SELECTION = 3; LAlX|b
public final static int SHELL = 4; >Ovz;
public final static int QUICK = 5; d-e/0F!
public final static int IMPROVED_QUICK = 6; B;NK\5>
public final static int MERGE = 7; }s@IQay+
public final static int IMPROVED_MERGE = 8; *C+[I
public final static int HEAP = 9; a.gMH
uL
0)b1'xt',
public static void sort(int[] data) { "9aFA(H6w
sort(data, IMPROVED_QUICK); er-0i L@
} [hg9 0Q6
private static String[] name={ Kg>B$fBx)
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" /.!&d^
}; >yP>]r+
9e>2kd
private static Sort[] impl=new Sort[]{ 3gVU#T[[
new InsertSort(), +2 oZML
new BubbleSort(), cl&?'`
)
new SelectionSort(), O{\<Izm`D
new ShellSort(), VBDb K|
new QuickSort(), <D)@;A
new ImprovedQuickSort(), o&@ y^<UQ
new MergeSort(), =EA @
new ImprovedMergeSort(), {Ke
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new HeapSort() +$(y2F7|u-
}; wA/!A$v(
uuD2O )v
public static String toString(int algorithm){ LK*9`dzv=G
return name[algorithm-1]; `fX\pOk~e
} y_q1Y70i2r
;R2A>f~
public static void sort(int[] data, int algorithm) { h>[ qXz
impl[algorithm-1].sort(data); z(^dwMw}
} .6
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public static interface Sort { {cLWum[SY
public void sort(int[] data); Viw,YkC
} <b_K*]Z
R_GA`U\ {
public static void swap(int[] data, int i, int j) { -X%twy=
int temp = data; U"Bge\6x=
data = data[j]; 8,vP']4r%
data[j] = temp; fSVM[
} hslT49m>
} u^E0u^