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。 9K ;k%
插入排序: EK?@Z.q+
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package org.rut.util.algorithm.support; {jOzap|
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import org.rut.util.algorithm.SortUtil; )C>}"#J>
/** ZU-4})7uSB
* @author treeroot M!Z*QY."P
* @since 2006-2-2 hIVI\U,
* @version 1.0 3cOY0Z#T
*/ dUoWo3r=
public class InsertSort implements SortUtil.Sort{ E+}GxFG-:
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/* (non-Javadoc) &@YFje6Lcm
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n .f4z<
*/ B;z;vrrL
public void sort(int[] data) { O`i)?BC
int temp; Y^R?Q'
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {gFAvMj#
} GS
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} $A;7Em
} 3s` V)aXP
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} EqD^/(,L2
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冒泡排序: ?}'N_n ys
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package org.rut.util.algorithm.support; [)#u<lZ<~
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import org.rut.util.algorithm.SortUtil; m$fQ `XzU
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/** WI1T?.Gc
* @author treeroot :7p9t.R<$h
* @since 2006-2-2 UrO=!G k
* @version 1.0 ePp[m
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*/ SU%mmwES3
public class BubbleSort implements SortUtil.Sort{ oL<BLr9>
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/* (non-Javadoc) {Q5KV%F_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "7=bL7wM&
*/ J>`v.8y
public void sort(int[] data) { Mv.Ciyc
int temp; iH-bo@
for(int i=0;i for(int j=data.length-1;j>i;j--){ 2E$^_YT
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if(data[j] SortUtil.swap(data,j,j-1); Hf VHI1f
} z)4UMR#b&
} w&p~0cA~
} _*s~`jn{H
} NWEhAj<w
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} +J|+es
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选择排序: .#*D!;f
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package org.rut.util.algorithm.support; ]\A1mw-T
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import org.rut.util.algorithm.SortUtil; _
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/** XZ.7c{B<
* @author treeroot O\6vVM[
* @since 2006-2-2 B!eK!B
* @version 1.0 h`=r)D
*/ oZgHSR RL
public class SelectionSort implements SortUtil.Sort { ?4^};wDb2
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/* 'gCJ[ ce
* (non-Javadoc) gs?8Wzh90*
* 4~!Eje!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LU%#mY
*/ O?CdAnhQc`
public void sort(int[] data) { d]U`?A,
int temp; YWEYHr;%^?
for (int i = 0; i < data.length; i++) { 6`acg'sk>
int lowIndex = i;
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for (int j = data.length - 1; j > i; j--) { K[kds`
if (data[j] < data[lowIndex]) { H4t)+(:D'
lowIndex = j; Zr=ib
} d$pYo)8o({
} ^f9>l;Lb
SortUtil.swap(data,i,lowIndex); 8qn 9|
} OY: u',T
} Us'Cs+5XcG
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} iHPUmTus--
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Shell排序: ~p:?QB>1]
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package org.rut.util.algorithm.support; eNtf#Rqym
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}
import org.rut.util.algorithm.SortUtil; u$C\E<G^
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/** RT,:hH
* @author treeroot eH
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* @since 2006-2-2 GWhE8EDT
* @version 1.0 8) HBh7/
*/ ]%
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public class ShellSort implements SortUtil.Sort{ D&/I1=\(
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/* (non-Javadoc) \wYc1M@7V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qe<Hfp/p
*/ '3^Q14`R
public void sort(int[] data) { ioxbf6{
for(int i=data.length/2;i>2;i/=2){ ,]ga[
for(int j=0;j insertSort(data,j,i); =NadAyv
} ?-f,8Z|h
} =J](.78
insertSort(data,0,1); gljo;f:
} w8p8 ;@
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/** uAUp5XP|Z
* @param data Q=WySIF.
* @param j e4DMO*6
* @param i nob0T5G
*/ 8f|98T"
private void insertSort(int[] data, int start, int inc) { j
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int temp; l-<`m#/v
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Sm)u9
} V4|uas{0I:
} 5X#E@3g5
} HJIC<U
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} Tg0CE60"
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快速排序: $#e1SS32
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package org.rut.util.algorithm.support; 8#w)X/
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import org.rut.util.algorithm.SortUtil; &dr@6-xaq
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/** zyFUl%
* @author treeroot L0L2Ns
* @since 2006-2-2 \9/RAY_G
* @version 1.0 a7#?h%wf
*/ 1'JD =
public class QuickSort implements SortUtil.Sort{ 0OnV0SIL
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/* (non-Javadoc) BJk
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zU&L.+
*/ Wpr
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public void sort(int[] data) { uR$i48}
quickSort(data,0,data.length-1); Y]Vq\]m\
} BRzfic:e
private void quickSort(int[] data,int i,int j){ `XJm=/f
int pivotIndex=(i+j)/2; "j^MB)YD
file://swap dEp7{jY1O
SortUtil.swap(data,pivotIndex,j); pvF-Y9Xb
vcv CD7MD
int k=partition(data,i-1,j,data[j]); BhkoSkr
SortUtil.swap(data,k,j); q9]IIv
if((k-i)>1) quickSort(data,i,k-1); Ji?#.r`"n
if((j-k)>1) quickSort(data,k+1,j); wMWW=$h#\
UG](go't
} u -3:k
/** *z8|P#@
* @param data 0^3+P%(o@
* @param i IeP
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* @param j r@kP*
* @return |ZiC`Nt
*/ %S \8.
private int partition(int[] data, int l, int r,int pivot) { x`%JI=q
do{ S\=1_LDx"
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); b?T
SortUtil.swap(data,l,r); oyvKag
} n}?wVfEy
while(l SortUtil.swap(data,l,r); \)/yC74r7(
return l; !5Sd2<N
} y >+mc7n
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} iM]o"qOQm
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改进后的快速排序: Ef)yQ
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package org.rut.util.algorithm.support; "@/62b
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import org.rut.util.algorithm.SortUtil; 'xE
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/** t:)ERT")
* @author treeroot bt$)Xu<R
* @since 2006-2-2 8gy_Yj&{P
* @version 1.0 1:M@&1LYp
*/ 2%u;$pj
public class ImprovedQuickSort implements SortUtil.Sort { V[nQQxWp=
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private static int MAX_STACK_SIZE=4096; Qk1xUE
private static int THRESHOLD=10; hA1-){aw3q
/* (non-Javadoc) &ldBv_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8|%^3O 0X
*/ ,|kDsR!
public void sort(int[] data) { 6#@ f'~s
int[] stack=new int[MAX_STACK_SIZE]; ])}(k
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int top=-1; n$n7-7
int pivot; r^,<(pbd
int pivotIndex,l,r; _zWfI.o
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stack[++top]=0; \S~Vx!9w
stack[++top]=data.length-1; .iD*>M:W
!\Xm!I8
while(top>0){ "Wo,'8{v
int j=stack[top--]; NnT g3:.
int i=stack[top--]; i0jBZW"_1$
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pivotIndex=(i+j)/2; \ZU1Jb1c
pivot=data[pivotIndex]; }Gyqq6Aeb
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SortUtil.swap(data,pivotIndex,j); h vka{LD
sarq`%zrk
file://partition ',^+bgs5
l=i-1; \</b4iR)LT
r=j; -Go 7"j
do{ r.ZF_^y}+
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); L|@y&di
SortUtil.swap(data,l,r); qqrq11W
} '6y}ZE[
while(l SortUtil.swap(data,l,r); MY#
SortUtil.swap(data,l,j); 03E4cYxt5
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if((l-i)>THRESHOLD){ *jIqAhs0{
stack[++top]=i; ' Z0r>.
stack[++top]=l-1; jw<pK4?y
} 29CINC
if((j-l)>THRESHOLD){ /zDi9W*~1
stack[++top]=l+1; }v:jncp
stack[++top]=j; w }^ I
} ?`zXLY9q7
r$Co0!.
} n_ lo`
file://new InsertSort().sort(data); &e-U5'(6v_
insertSort(data); w@JKl5
} 8{`?=&%6
/** LI2&&Mw
* @param data JM1R ;i6
*/ M])dJ9&e
private void insertSort(int[] data) { ;{h CF
int temp; +6wiOHB`
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ,C%eBna4Iq
} EI!6MC)
} Um#Wu]i
} MUfG?r\t
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} tyaA\F57
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归并排序: (jU6GJRP
H"ZZ.^"5FV
package org.rut.util.algorithm.support; ;22oY>w
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import org.rut.util.algorithm.SortUtil; otggN:^Qw
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/** gUyR_5q)8l
* @author treeroot !,V{zTR
* @since 2006-2-2 5waKI?4F
* @version 1.0 ^&y$Wd]6
*/ \]$IDt(s
public class MergeSort implements SortUtil.Sort{ (=~&+z
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/* (non-Javadoc) ,^#yo6-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KM^ufF2[
*/ y~()|L[
public void sort(int[] data) { ME'|saP
int[] temp=new int[data.length]; _6ay-u
mergeSort(data,temp,0,data.length-1); k'0Pi6
} 6 G=j6gK%P
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private void mergeSort(int[] data,int[] temp,int l,int r){ xhcK~5C
int mid=(l+r)/2; \=_{na_
if(l==r) return ; Y ')x/H
mergeSort(data,temp,l,mid); `ZC<W]WYX/
mergeSort(data,temp,mid+1,r); E Cyyl
for(int i=l;i<=r;i++){ U8
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temp=data; +TXX$)3%
} K tNY_&xd
int i1=l; j~*L~7
int i2=mid+1; W.kM7z>G
for(int cur=l;cur<=r;cur++){ 6{txm+U
if(i1==mid+1) _a1x\,R|DB
data[cur]=temp[i2++]; )"pF R4
else if(i2>r) O{#=d
data[cur]=temp[i1++]; F_CYYGZ
else if(temp[i1] data[cur]=temp[i1++]; 72'5%*1
else JQ"U4GVp
data[cur]=temp[i2++]; iX)%Q
} JH7<
} &RfC"lc
ocs+d\
} ynbuN x*
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改进后的归并排序: ~?(N
rS;Dmm
package org.rut.util.algorithm.support; 7Hs%Cc"
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import org.rut.util.algorithm.SortUtil; I'LnI*
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/** t<#h$}=:Vt
* @author treeroot b9!FC$^J
* @since 2006-2-2 6Oy$gW)
* @version 1.0 )rC6*eR
*/ r(P(Rj2~
public class ImprovedMergeSort implements SortUtil.Sort { 0=?<y'=
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private static final int THRESHOLD = 10; =zz~kon9
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/* ^jx7@LgS=
* (non-Javadoc) M]J^N#
* O&Y*pOg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ftr5k^!
*/ ')$+G152
public void sort(int[] data) { V;v8=1t!
int[] temp=new int[data.length]; ml+; Rmvb
mergeSort(data,temp,0,data.length-1); #)nSr
} aeD ;5VV
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private void mergeSort(int[] data, int[] temp, int l, int r) { h D/*h*}T>
int i, j, k; nR-YrR*k
int mid = (l + r) / 2; 3xaR@xjS
if (l == r) cH&J{WeZa
return; -[wGX}}
if ((mid - l) >= THRESHOLD) aJ>65RJ^=
mergeSort(data, temp, l, mid); ;<ZLcTL
else S Em Q@1
insertSort(data, l, mid - l + 1); |AozR ~
if ((r - mid) > THRESHOLD) N(Tz%o4
mergeSort(data, temp, mid + 1, r); @"^0%/2-
else hbY5l}\5
insertSort(data, mid + 1, r - mid); N'GeHByIT
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for (i = l; i <= mid; i++) { BW$"`T@c6~
temp = data; (^Y~/
} i uF*.hc,%
for (j = 1; j <= r - mid; j++) { IhVO@KJI
temp[r - j + 1] = data[j + mid]; vwxXgk
} ?k(7 LX0j
int a = temp[l]; ;;#qmGoE
int b = temp[r]; )% ~OH
for (i = l, j = r, k = l; k <= r; k++) { a m|F?|1
if (a < b) { 73/P&hT
data[k] = temp[i++]; AHX St
a = temp; LhA/xf
} else { pu2tY7Ja
data[k] = temp[j--]; )mF5Vw"
b = temp[j]; N/MUwx;P
} 8; 0A
g
} (pv+c,
} X\bOz[\
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/** xHD=\,{ig
* @param data 2#c<\s|C
* @param l ww],y@da
* @param i R}*_~7r5
*/ 8Djc
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private void insertSort(int[] data, int start, int len) { *%%g{
3$
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); VHIOwzC
} 0Ziw_S\d&s
} P\1L7%*lU
} hoK>~:;
} .y!<t}
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堆排序: 2AT5
X\{LnZ@r4
package org.rut.util.algorithm.support; < t,zaIi
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import org.rut.util.algorithm.SortUtil; {>hC~L?6
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/** xMTKf+7
* @author treeroot pKpUXfQu
* @since 2006-2-2 X-K=!pET
* @version 1.0 wn/_}]T
*/ L ~lxXTG\
public class HeapSort implements SortUtil.Sort{ >\KNM@'KI
u{['<r;I
/* (non-Javadoc) RI(DXWM|h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )u[emv$
*/ A kC1z73<
public void sort(int[] data) { $4h 5rC g0
MaxHeap h=new MaxHeap(); ywGd> @
h.init(data); J}v}~Cv
for(int i=0;i h.remove(); \LR~r%(rM
System.arraycopy(h.queue,1,data,0,data.length); &"&Z
#llb
} =P't(<
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private static class MaxHeap{ Yc_8r+;(
p<2L.\6"
void init(int[] data){ ,,%i;
this.queue=new int[data.length+1]; gQ Fjr_IS#
for(int i=0;i queue[++size]=data; 7%Gwc?[x
fixUp(size); J??-j
} ;z}i-cNae
} B+\3-q
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private int size=0; .HS"}A T
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private int[] queue; {< )1q ;
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public int get() { [ 9 {*94M
return queue[1]; I,>-t GK
} e:fy#,HEj{
Mo?~_|}
public void remove() { V58wU:li
SortUtil.swap(queue,1,size--); JTO~9>$ B
fixDown(1); de.&`lPRf
} Dz>^IMsY
file://fixdown )h"<\%LU
private void fixDown(int k) { y{ibO}s
int j; ^1iSn)&
while ((j = k << 1) <= size) { JEXy%hl
if (j < size %26amp;%26amp; queue[j] j++; l=S 35og
if (queue[k]>queue[j]) file://不用交换 e6@=wnoX u
break; re/@D@%
SortUtil.swap(queue,j,k); qE&v ;
k = j; YVQN&|-
} PRu 6xsyA
} .7e2YI,S
private void fixUp(int k) { #hfXZVD
while (k > 1) { \KMToN&2
int j = k >> 1; Uzz'.K(Mv|
if (queue[j]>queue[k]) rI= v
break; be]bZ
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SortUtil.swap(queue,j,k); Tl(^
k = j; F,W~,y
} *SU\ABcov
} U`R5'Tf;
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} `Nz/Oh7
4r>6G/b8*
} ")O%86_Q:
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SortUtil: ~ELNyI11
2`7==?
package org.rut.util.algorithm; GPkmf%FJ
2D75:@JL}|
import org.rut.util.algorithm.support.BubbleSort; xHL( !PF
import org.rut.util.algorithm.support.HeapSort; d"}k!
0m
import org.rut.util.algorithm.support.ImprovedMergeSort; d4u})
import org.rut.util.algorithm.support.ImprovedQuickSort; t2/#&J]
import org.rut.util.algorithm.support.InsertSort; 6IBgt!=,
import org.rut.util.algorithm.support.MergeSort; Yw4n-0g
import org.rut.util.algorithm.support.QuickSort; $ 7O}S.x
import org.rut.util.algorithm.support.SelectionSort; t[ubn+
import org.rut.util.algorithm.support.ShellSort; QS%%^+E2
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/** aC$B2
* @author treeroot aZ2!i
* @since 2006-2-2 ]NUl9t*N4
* @version 1.0 JlH&??
*/ K(q+
"
public class SortUtil { ]$ L|
public final static int INSERT = 1; '8Q]C*Z
public final static int BUBBLE = 2; ^T*? >%`
public final static int SELECTION = 3; veMH
public final static int SHELL = 4; /qMG=Z
public final static int QUICK = 5; "@%7 -nu
public final static int IMPROVED_QUICK = 6; 0H6(EzN
public final static int MERGE = 7; i!J8 d"
public final static int IMPROVED_MERGE = 8; S=5<^o^h3
public final static int HEAP = 9; %-)H^i~]%
)2Wi`ZT
public static void sort(int[] data) { 7|{}\w(I
sort(data, IMPROVED_QUICK); ;nep5!s;<
} vMA]j>>
private static String[] name={ wN@oYFoL
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 2/vMoVT,
}; -=%@L&y1
QqFR\6
private static Sort[] impl=new Sort[]{ (\\eo
new InsertSort(), pOGeruu?
new BubbleSort(), v=0(~<7B
new SelectionSort(), GR&z,
new ShellSort(), .:@Ykdm4I
new QuickSort(), fKeT,U`W
new ImprovedQuickSort(), 'C`U"I
new MergeSort(), _7H7
dV
new ImprovedMergeSort(), !k6K?xt
new HeapSort() DnC{YK
}; E)TN,@%
6VS4y-N
public static String toString(int algorithm){ wP6Fl L
return name[algorithm-1]; QN
#U)wn:
} J3e96t~u
N*"p|yhd]
public static void sort(int[] data, int algorithm) { s%qF/70'
impl[algorithm-1].sort(data); e5* ni/P
} S]bmS6#
-K
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public static interface Sort { \#f<!R4
public void sort(int[] data); UYk/v]ZA
} K?[q%W]%
xDG2ws=@D
public static void swap(int[] data, int i, int j) { +fC=UAZ
int temp = data; @LS@cCC,a
data = data[j]; rX4j*u2u
data[j] = temp; mkYqpD7
} Sm)Ha:[4
} hWM<
0=