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。 kP%Hg/f/Ot
插入排序: x>Ah4ad
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package org.rut.util.algorithm.support; g
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import org.rut.util.algorithm.SortUtil; pk'@!|g%=
/** ki6`d?
* @author treeroot ~Z5?\a2Ld
* @since 2006-2-2 H[ %Fo
* @version 1.0 .kM74X=S
*/ Hk-)fl#dr
public class InsertSort implements SortUtil.Sort{ (^g?/i1@d
!x. ^ya
/* (non-Javadoc) zOq~?>Ms6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )@Yp;=l
*/ f}bUuQrH-!
public void sort(int[] data) { Y_`D5c:
int temp; `$`:PT\Zv4
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {+[~;ISL
} Yt*M|0bL
} RIX0AE
} xJ9_#$ngeM
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} @18@[ :d"
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冒泡排序: {xt<`_R
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package org.rut.util.algorithm.support; ]
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import org.rut.util.algorithm.SortUtil; EU, 4qO
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/** e4NT
* @author treeroot 8QYG"CA6/
* @since 2006-2-2 sTqy-^e7
* @version 1.0 =!xeki]|9
*/ ~nb%w?vv
public class BubbleSort implements SortUtil.Sort{ (7
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/* (non-Javadoc) :5?ti
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tBG :ECUL
*/ TMG:fg&E~
public void sort(int[] data) { C5Q|3d
int temp; 'O`jV0aa'
for(int i=0;i for(int j=data.length-1;j>i;j--){ ;:*o
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if(data[j] SortUtil.swap(data,j,j-1); OR a!84L
} &F\J%#{
} 6f=/vRAh$
} p'k stiB
} @Risabn
,@!8jar@w}
} xpyb&A
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选择排序: uYL6g:]+ZC
)F? 57eh
package org.rut.util.algorithm.support; LF%1)x
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import org.rut.util.algorithm.SortUtil; `ea$`2
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/** 1s\10 hK1c
* @author treeroot *ILS/`mdav
* @since 2006-2-2 p"H8;fPA0
* @version 1.0 r _xo>y~S
*/ fY=iQ?{/[
public class SelectionSort implements SortUtil.Sort { &X+V}
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/* EhB9M!Y`@
* (non-Javadoc) QY+#Vp<`
* #2ZXYH}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0&/1{Dk*n
*/ z9HQFRbo[
public void sort(int[] data) { `1EBnL_1
int temp; 1`O`!plD+
for (int i = 0; i < data.length; i++) { 46_<v=YSJ
int lowIndex = i; c7s4 g-
for (int j = data.length - 1; j > i; j--) { LEhku4U.
if (data[j] < data[lowIndex]) { PR|Trnd&D
lowIndex = j; Z55,S=i
} 77i |a]Kd
} Pms3X
SortUtil.swap(data,i,lowIndex); H.idL6*G
} P+}qaup
} q'(WIv@
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} -(cm
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Shell排序: 8.pz?{**T
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package org.rut.util.algorithm.support; <Dm6CH
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import org.rut.util.algorithm.SortUtil; y^@%Xrs
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/** LOnhFX
* @author treeroot A^ ,(Vyd
* @since 2006-2-2 "fpj"lf-
* @version 1.0 ]nX.zE|F
*/ dt`L}Yi
public class ShellSort implements SortUtil.Sort{ =AD/5E,3
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/* (non-Javadoc) v9inBBC q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _D,8`na>K
*/ (la<X<w
public void sort(int[] data) { sx]?^KR:
for(int i=data.length/2;i>2;i/=2){ uTl:u
for(int j=0;j insertSort(data,j,i); /kw4":{]
} CCEx>*E6c
} ^OBaVb
insertSort(data,0,1); c4-&I"z
} &V=54n=O?
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/** p,tB
* @param data xZ@Y`2A':
* @param j xh-[]Jz(
* @param i H<1?<1^
*/ #Ejly2C,
private void insertSort(int[] data, int start, int inc) { $--PA$H27
int temp; :W1,s53
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); JA(nDD/;
} MxdfuFss
} Xx'>5d>
} y5Pw*?kn
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} JG( <
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快速排序: mKsj7
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package org.rut.util.algorithm.support; 4|2$b:t
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import org.rut.util.algorithm.SortUtil; `% ENGB|
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/** Q?"[zX1
* @author treeroot /6q/`vx@
* @since 2006-2-2 E`?BaCrG~
* @version 1.0 6U&Uyd)
*/ z!3Z^d`
public class QuickSort implements SortUtil.Sort{ cw5YjQ8 9
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/* (non-Javadoc) :%>8\q>UX
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x.^vWka(
*/
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public void sort(int[] data) { @wFm])}0
quickSort(data,0,data.length-1); }oN(nPxv9
} T^nX+;:|
private void quickSort(int[] data,int i,int j){ I2W2B3D` c
int pivotIndex=(i+j)/2; Vks,3$
file://swap NDg]s2T
SortUtil.swap(data,pivotIndex,j); K[kmfXKu
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int k=partition(data,i-1,j,data[j]); )_Oc=/c|f
SortUtil.swap(data,k,j); z5vryhX_Z
if((k-i)>1) quickSort(data,i,k-1); EmUxM_T/2
if((j-k)>1) quickSort(data,k+1,j); 7q^/.:wlf
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} ^=W&p%Y(!
/** TdE_\gEo/R
* @param data f.f4<_v'h
* @param i 5o3_x ~e
* @param j L|Ydd!m
* @return sN g"JQ
*/ ZH}NlEn
private int partition(int[] data, int l, int r,int pivot) { RdDcMZ
do{ -of= Lp
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ('lnQD.Hd
SortUtil.swap(data,l,r); Za f)
} <+b:
while(l SortUtil.swap(data,l,r); +>3c+h,%.
return l; rx;U/)~#<
} W" !amMQ
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} B.G!7>=
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改进后的快速排序: #NE^f2
Tk!b`9
package org.rut.util.algorithm.support; `o3d@Vc
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import org.rut.util.algorithm.SortUtil; 4bBxZY
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/** >ahj|pm
* @author treeroot j41:]6
* @since 2006-2-2 z
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* @version 1.0 "EHc&,B`
*/ kb:C>Y8!sC
public class ImprovedQuickSort implements SortUtil.Sort { bn`zI~WS
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private static int MAX_STACK_SIZE=4096; 1v4kN
-
private static int THRESHOLD=10; wtUG2 (
/* (non-Javadoc) OL'=a|g|c
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L%0lX$2&\
*/ OKqpc;y:D
public void sort(int[] data) { 0?7uqS#L
int[] stack=new int[MAX_STACK_SIZE]; Vj]kJ,j\y
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int top=-1; 5oKc=iX_3
int pivot; xY S%dLE"
int pivotIndex,l,r; YXtGuO\q
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stack[++top]=0; !LJ.L?9qw
stack[++top]=data.length-1; J50 ~B3bj`
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while(top>0){ 9y5\4&v
int j=stack[top--]; ]xG8vy
int i=stack[top--]; yq}{6IyZ^
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pivotIndex=(i+j)/2; ~ YK<T+
pivot=data[pivotIndex]; `Z/ IW
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SortUtil.swap(data,pivotIndex,j); K_5&_P1
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E
file://partition l0&8vhw8k
l=i-1; 8joQPHkI\
r=j; )ziQ=k6d6
do{ nB5[]x'
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); *lK4yI*%o
SortUtil.swap(data,l,r); fh_
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} kOCxIJ!Xp=
while(l SortUtil.swap(data,l,r); /pU6trIM
SortUtil.swap(data,l,j); (M+<^3c
95Qz1*TR
if((l-i)>THRESHOLD){ p4'"Wk8
stack[++top]=i; $<cZ<g5)
stack[++top]=l-1; Fsf22
} ;*2e;m~)?
if((j-l)>THRESHOLD){ j0~3[dyqU
stack[++top]=l+1; kYB
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stack[++top]=j; vb- .^l
} ?I'-C?(t@1
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} Hl;p>>n
file://new InsertSort().sort(data); BFOFes`>~
insertSort(data); Oez}C,0
} .m?~TOR
/** .( h$@|Y
* @param data {^W,e ^:
*/ \.c
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private void insertSort(int[] data) { XijLS7Aw|
int temp; V]]qu:Mh8
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |T_Pz&-
} @vYmkF`
} 'pY;]^M
} O ->eg
fmJW d|
} 2&0<$>
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归并排序: \+3Wd$I
-o_TC
package org.rut.util.algorithm.support; tb0E?&M
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import org.rut.util.algorithm.SortUtil; HY4E
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/** nb_^3K]r
* @author treeroot 2<G1'7)
* @since 2006-2-2 q|X4[E|{Q
* @version 1.0 qffSq](D.
*/
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public class MergeSort implements SortUtil.Sort{ L~{Vt~H9"
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/* (non-Javadoc) !><
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r`&|)Hx
*/ /:`
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public void sort(int[] data) { pPqN[OJ
int[] temp=new int[data.length]; 0 l:pWc
mergeSort(data,temp,0,data.length-1); ph?0I:eU
} <cv1$
x ~P
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private void mergeSort(int[] data,int[] temp,int l,int r){ 6KCmswvE
int mid=(l+r)/2; `Kw"XGT
if(l==r) return ; 4E-A@FR
mergeSort(data,temp,l,mid); *ZR@z80i
mergeSort(data,temp,mid+1,r); AaYrVf 9!
for(int i=l;i<=r;i++){ YC&jKx .>
temp=data; g0j4<\F2\
} lo UwRz
int i1=l; ` G=L07
int i2=mid+1; )H9*NB8%
for(int cur=l;cur<=r;cur++){ (oitCIV
if(i1==mid+1) G>,nZ/,A{
data[cur]=temp[i2++]; %lJiM`a
else if(i2>r) 6
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data[cur]=temp[i1++]; NWHH.1|
else if(temp[i1] data[cur]=temp[i1++]; Q|B|#?E==
else tOg
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data[cur]=temp[i2++]; [A9,!YY
} [Z#.]gb
} Qf-k&d
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} y3nm!tjyM
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改进后的归并排序: O)xEF~DaD
6IY}SI0N
package org.rut.util.algorithm.support; 6L2*gO:r?
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import org.rut.util.algorithm.SortUtil; !)/iRw9re
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/** oT)VOkFq
* @author treeroot [du>ff
* @since 2006-2-2 '<D `:srV
* @version 1.0 B~;LBgpp
*/ `Kc %S^C'
public class ImprovedMergeSort implements SortUtil.Sort { [Ht."VxR
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private static final int THRESHOLD = 10; 2 Z`$
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/* 2]NAs9aZ
* (non-Javadoc) gLaO#cQ%
* =3sldKL&F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HCjn9
*/ :@>br+S
public void sort(int[] data) { Dd#
SUQ
int[] temp=new int[data.length]; JXY!c\,
mergeSort(data,temp,0,data.length-1); `H2F0{\og
} CoUd16*"JM
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private void mergeSort(int[] data, int[] temp, int l, int r) { ]v@ tZ}
int i, j, k; Iwt2}E(e
int mid = (l + r) / 2; R'9@A\7#
if (l == r) IN|i)?rh
return; ,-7/]h,l
if ((mid - l) >= THRESHOLD) OHP3T(Q5
mergeSort(data, temp, l, mid); {|5$1v
else aC,vh1")F
insertSort(data, l, mid - l + 1); 0"kE^=
if ((r - mid) > THRESHOLD) QK?2E
mergeSort(data, temp, mid + 1, r); ?St=7a(D
else ) qyx|D
insertSort(data, mid + 1, r - mid); ~f=6?5.wa
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for (i = l; i <= mid; i++) { XW~ BEa
temp = data; tT* W5
} YZBzv2'\x
for (j = 1; j <= r - mid; j++) { qsft*&
temp[r - j + 1] = data[j + mid]; ^EUOmVN
} HhWwc#B
int a = temp[l]; bL'#
int b = temp[r]; 4VmCW"b7h
for (i = l, j = r, k = l; k <= r; k++) { O&3r*vd
if (a < b) { A )RI:?+
data[k] = temp[i++]; 6t_ 3%{
a = temp; DYAwQ"i;6
} else { Pv7f
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data[k] = temp[j--]; -yl4tW
b = temp[j]; KO-Zz&2f
} z[5Y
Z~}*
} [/AdeR
} k,;lyE
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/** *CH!<VB/
* @param data qP;{3FSkAF
* @param l )l!J$X+R
* @param i h{W$ fZc<
*/ Y|m_qB^_
private void insertSort(int[] data, int start, int len) { qD(fYOX{C
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); d^Zo35X
} >?>u bM`,
} +Q SxYV
} uv|eVT3jNs
} "$~}'`(]
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堆排序: ^I(oy.6?=p
3yHb!}F
package org.rut.util.algorithm.support; ;z.6'EYMG
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import org.rut.util.algorithm.SortUtil; `'xQ6Sy
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/** yD3bl%uZ
* @author treeroot ,30FGz^i
* @since 2006-2-2 #.E\,N'
* @version 1.0 M.xhVgFf)
*/ Hi; K"H]x1
public class HeapSort implements SortUtil.Sort{ OX)#F'Sl}
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/* (non-Javadoc) er["NSo
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u [V4OU}%
*/ fqcU5l[v,
public void sort(int[] data) { !paN`Fz\a
MaxHeap h=new MaxHeap(); _=|nOj39
h.init(data); _l24Ba$F6
for(int i=0;i h.remove(); }g>dn
System.arraycopy(h.queue,1,data,0,data.length); HF&h
} KjFZ
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private static class MaxHeap{ iUeV5cB
qs6Nb'JvQR
void init(int[] data){ 935-{h@k
this.queue=new int[data.length+1]; bGZhUEq
for(int i=0;i queue[++size]=data; C1X}3bB
fixUp(size); d98))G~W
} r/mA2
} a&$Zpf!!
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private int size=0; J 6(~>g
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private int[] queue; K-2.E
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public int get() { iEiu%T>
return queue[1]; W<\ kf4Y
} r+t ,J|V
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public void remove() { snXB`UC
SortUtil.swap(queue,1,size--); 5z1\#" B[
fixDown(1); ~A8qeaP
} D ?Nd; [
file://fixdown - *:p.(c
private void fixDown(int k) { 5~@?>)TBv
int j; %/UV_@x&
while ((j = k << 1) <= size) { EX[B/YH
if (j < size %26amp;%26amp; queue[j] j++; 4=u+ozCG
if (queue[k]>queue[j]) file://不用交换 N@k3$+ls
break; d>lt
SortUtil.swap(queue,j,k); #d7N| 9_
k = j; !OPSS P]-
} ,9=gVW{
} >%9^%p^
private void fixUp(int k) { J?._/RL8-
while (k > 1) { qq
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int j = k >> 1; fA"<MslKLK
if (queue[j]>queue[k]) -h>Z,-DE6
break; r0)JUc}Fyq
SortUtil.swap(queue,j,k); 8 ne/=N|,
k = j; Yuwc$Qp)
} 7#~4{rjg
} |w=Ec#)t4
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} gzVtxDh
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} DW1@<X
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SortUtil: Xl#Dw bx
Wu4ot0SZ
package org.rut.util.algorithm; 25aNC;J
JDkCUN 5
import org.rut.util.algorithm.support.BubbleSort; :~vxZ*a
import org.rut.util.algorithm.support.HeapSort; 3Bejp+xX
import org.rut.util.algorithm.support.ImprovedMergeSort; A/!<kp{S
import org.rut.util.algorithm.support.ImprovedQuickSort; ci`zR9Ks
import org.rut.util.algorithm.support.InsertSort; ~ct2`M$TL(
import org.rut.util.algorithm.support.MergeSort; +C'XS{K,#
import org.rut.util.algorithm.support.QuickSort; t2"@Ps&1|
import org.rut.util.algorithm.support.SelectionSort; T36x=LX
import org.rut.util.algorithm.support.ShellSort; 8QT<M]N%
St6aYK
/** C`dkD0_
* @author treeroot gXLCRn!iR
* @since 2006-2-2 @zo7.'7P
* @version 1.0 G;/Q>V
*/ YnSbw3U.I
public class SortUtil { 5QAdcEcN@O
public final static int INSERT = 1; 0Y7$d`
public final static int BUBBLE = 2; B1E$v(P3M
public final static int SELECTION = 3; +fM&su=wl
public final static int SHELL = 4; S"zk!2@C
public final static int QUICK = 5; x5oOF7#5
public final static int IMPROVED_QUICK = 6; E(_KN[}S
public final static int MERGE = 7; K]X`sH:
public final static int IMPROVED_MERGE = 8; yk<VlS
public final static int HEAP = 9; ^pj>9%
G%S6$@:
public static void sort(int[] data) { /?Vdqci
sort(data, IMPROVED_QUICK); _l<mu? "
} cg,Ua!c
private static String[] name={ @@Q6TB
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" [q1Unm
}; |8bE9qt.P
e8oKn&
private static Sort[] impl=new Sort[]{ fe|g3>/|
new InsertSort(), flP>@i:e6
new BubbleSort(), zDB"r
new SelectionSort(), dXl]Pe|v
new ShellSort(), |k6Ox*
new QuickSort(), Axlm<3<wf"
new ImprovedQuickSort(), IK'F{QPH
new MergeSort(), b
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new ImprovedMergeSort(), gY!N3 *:
new HeapSort() L=RGL+f1_
}; wFvT0
Cc!J1)
public static String toString(int algorithm){ s O=4IBE
return name[algorithm-1]; HMV)U{
} :N2E}hxk
P[FV2R~
public static void sort(int[] data, int algorithm) { jJia.#.Ze
impl[algorithm-1].sort(data); Yrxk Kw#
} LKx` v90p
b,Ke>.m
public static interface Sort { Nt~x&s
public void sort(int[] data); MGQ,\55"
} +< yhcSSTB
Wwhgo.Wx
public static void swap(int[] data, int i, int j) { G6V/S aD
int temp = data; :m Kxa
data = data[j]; Me,<\rQ
data[j] = temp; !MoOKW
}
Yl~$V(
} "]#'QuR