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。 Wqkzj^;"G
插入排序: X$;&Mdo.
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package org.rut.util.algorithm.support; B>W8pZu-J
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import org.rut.util.algorithm.SortUtil; X Z . T%g
/** ?!K6")SE
* @author treeroot 9b&|'BBW
* @since 2006-2-2 1~'jC8&J
* @version 1.0 9vz\R-un
*/ 4-t^?T:qF
public class InsertSort implements SortUtil.Sort{ 7o0zny3?
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/* (non-Javadoc) sO`
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cT(6>@9@
*/ 2j:0!%
public void sort(int[] data) { 1X[^^p~^
int temp; Kxch.$hc,
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); V"Z8-u
} g@37t @I
} <|3%}?
} P`ou:M{8
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} =#/Kg_RKL
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冒泡排序: J*[@M*R;&
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package org.rut.util.algorithm.support; r=&,2meo
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import org.rut.util.algorithm.SortUtil; 'S1u@p,q
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/** #]x3(}3W
* @author treeroot HeO:=OE~>
* @since 2006-2-2 kDE-GX"Y
* @version 1.0 ~\mh\a&
*/ ujRXAN@mC
public class BubbleSort implements SortUtil.Sort{ +4.s4&f)
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/* (non-Javadoc) odSPl{. >d
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G0{Z@CvO'
*/ >UMxlvTg&
public void sort(int[] data) { 4SZ,X^]I>
int temp; B
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for(int i=0;i for(int j=data.length-1;j>i;j--){ {Q3OT
if(data[j] SortUtil.swap(data,j,j-1); +?Ii=* 7n
} 6,A|9UX=`
} d?8OY
} E`UkL*Q
} H;
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} ~x^y5[5{
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选择排序: )Cl>% 9
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package org.rut.util.algorithm.support; !1G
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import org.rut.util.algorithm.SortUtil; D xV=S0P
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/** x-m*p^}
* @author treeroot b)<WC$"
* @since 2006-2-2 SHX`/
* @version 1.0 ~= *o
*/ 3uocAmY
public class SelectionSort implements SortUtil.Sort { +Yc^w5 !(
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/* 1EXT^2!D
* (non-Javadoc) F(yR\)!C
* 68XJ`/d
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ Cgx:6TRS
public void sort(int[] data) { b^VRpv
int temp; nwU],{(Hgr
for (int i = 0; i < data.length; i++) { byxlC?q7
int lowIndex = i; [ ,;e,ld
for (int j = data.length - 1; j > i; j--) { q<
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if (data[j] < data[lowIndex]) { \ZZ6r^99
lowIndex = j; 5c` ;~
} AH#mL
} -N*[f9EJB
SortUtil.swap(data,i,lowIndex); $6a9<&LP_
} Gr\ ]6
} Y"H`+UV
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} @."K"i'Bl
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Shell排序: =&z+7Pe[
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package org.rut.util.algorithm.support; @G"nkB
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import org.rut.util.algorithm.SortUtil; :)~l3:O
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/** .; F<X\_
* @author treeroot lo$G*LWu:
* @since 2006-2-2 wa8jr5/k"
* @version 1.0 a9-Mc5^'n
*/ N1Vj;-
public class ShellSort implements SortUtil.Sort{ A0<g8pv
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/* (non-Javadoc) Voo'ZeZa
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a;xeHbE
*/ SZF 8InyF
public void sort(int[] data) { ;k!.ey$S
for(int i=data.length/2;i>2;i/=2){ Kk8wlC
for(int j=0;j insertSort(data,j,i); uO]D=Z\S(
} ~#E&E%sJ
} q[\ 3,Y
insertSort(data,0,1); )#m{"rk[x,
} ,<U=
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/** #yochxF_
* @param data f)*?Ji|5F
* @param j \}$|Uo$O
* @param i dPEDsG0$a
*/ ^3dc#5]Xf
private void insertSort(int[] data, int start, int inc) { I{89chi
int temp; q`1tUd 4G
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); TRi'l #m4
} ,Vi_~b
} 9<u&27.
} h-96 2(LG
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} 6{I7)@>N
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快速排序: L<!h3n
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package org.rut.util.algorithm.support; ;0dH@b
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import org.rut.util.algorithm.SortUtil; +j 9+~
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/** epsRv&LfC
* @author treeroot KNeVSZT
* @since 2006-2-2 =MqEbQn{C3
* @version 1.0 D`p2a eI
*/ RnkV)ed(
public class QuickSort implements SortUtil.Sort{ nX!%9x$3
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/* (non-Javadoc) 4mDHAR%D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !V.]mI
*/ ~ EBaVl ({
public void sort(int[] data) { U2A-ub>7
quickSort(data,0,data.length-1); ec!e
} TB>_#+:
private void quickSort(int[] data,int i,int j){ aH"d~Y^
int pivotIndex=(i+j)/2; 6|EOB~|
file://swap jwk+&S
SortUtil.swap(data,pivotIndex,j); q]="ek&_
E:9RskI
int k=partition(data,i-1,j,data[j]); DghyE`
SortUtil.swap(data,k,j); >&.N_,*
if((k-i)>1) quickSort(data,i,k-1); w~+*Vd~U
if((j-k)>1) quickSort(data,k+1,j); 'l/l]26rO4
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} j
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/** 1|p\rHGd
* @param data ;l;jTb ^l
* @param i "Erphn
* @param j 16Qu{K
* @return )j8'6tk)Z
*/ oc"p5Y3,Os
private int partition(int[] data, int l, int r,int pivot) { 'gN[LERT
do{ tV=Qt[|@
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Aa9l-:R
SortUtil.swap(data,l,r); | d*<4-:
} $(62j0mS>
while(l SortUtil.swap(data,l,r); a0ms9%Y;Q[
return l; pss')YP.
} UT@Qo}:
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} L[zTT\a
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改进后的快速排序: >(2;(TbQm0
5i6Ji(
package org.rut.util.algorithm.support; )P7oL.)
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import org.rut.util.algorithm.SortUtil; w?D=
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/** mg*iW55g
* @author treeroot NkUY_rKPb
* @since 2006-2-2 F42^Uoaz
* @version 1.0 !IJ
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*/ r`ftflNh(
public class ImprovedQuickSort implements SortUtil.Sort { n'ZPB
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private static int MAX_STACK_SIZE=4096; [p4([ef
'
private static int THRESHOLD=10; hzAuj0-A
/* (non-Javadoc) #IppjaPl8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 67/@J)z0%
*/ PdKcDKJ
public void sort(int[] data) { 6U).vg<
int[] stack=new int[MAX_STACK_SIZE]; MZ)lNU l
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int top=-1; |3k r*#
int pivot; x6aVNH=
int pivotIndex,l,r; :2
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stack[++top]=0; HE*^!2f
stack[++top]=data.length-1; bv7)[,i
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while(top>0){ g1XpERsSEV
int j=stack[top--]; G9S3r3
int i=stack[top--]; *[>{9V
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pivotIndex=(i+j)/2; sfVzVS[
pivot=data[pivotIndex]; `_&vvJPn@!
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SortUtil.swap(data,pivotIndex,j); nVpDjUpN
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file://partition )[99SM
l=i-1; Z2;~{$&M+
r=j; ,wr5DQ
do{ ZHRMW'Ne
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 3Q&@l49q
SortUtil.swap(data,l,r); Bz{"K
} /?>W\bP<
while(l SortUtil.swap(data,l,r); An]Vx<PD
SortUtil.swap(data,l,j); -Nr*na^H9#
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if((l-i)>THRESHOLD){ )1R[~]y
stack[++top]=i; D!,'}G#
stack[++top]=l-1; P/S ,dhs(
} Nt
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if((j-l)>THRESHOLD){ shLMj)7!
stack[++top]=l+1; )"Ujx`]4r
stack[++top]=j; f!7fz~&Sh
} ./tZ*sP:
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} :MYLap&L&
file://new InsertSort().sort(data); [$6YPM>Ee
insertSort(data); ;Gp9
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} }w=|"a|,
/** )REegFN@
* @param data 55b/giX
*/ Ct(^nn$A
private void insertSort(int[] data) { "MPS&OK
int temp; =g%<xCp
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 8&hxU@T~
} rZAP3)dA
} Ga^:y=m
} z3^gufOkQ
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} ]:#W$9,WL
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归并排序: pgUjje>#
*>GRU8_}
package org.rut.util.algorithm.support; IUWJi\,
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import org.rut.util.algorithm.SortUtil; 8XCT[X
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/** uxX 3wY;M
* @author treeroot ^]/V-!j
* @since 2006-2-2 '8^cl:X
* @version 1.0 #T>pu/EQX_
*/ kB?Uw#
public class MergeSort implements SortUtil.Sort{ ZKS]BbMZa
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/* (non-Javadoc)
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y2B'0l
*/ d_[zt)
public void sort(int[] data) { &?j\=%
int[] temp=new int[data.length]; M?m@o1\;W
mergeSort(data,temp,0,data.length-1); U$=Z`^<
} fn5!Nr ,
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private void mergeSort(int[] data,int[] temp,int l,int r){ ?wIw$p>wT
int mid=(l+r)/2; bvl!^xO]
if(l==r) return ; )|]*"yf:E
mergeSort(data,temp,l,mid); f]Zj"Tt-
mergeSort(data,temp,mid+1,r); %xXb5aY
for(int i=l;i<=r;i++){ 2`V0k.$?p
temp=data; 6ZXRb
} a!j{A?7Kw.
int i1=l; Z0 c|;
int i2=mid+1; ;t/KF"
for(int cur=l;cur<=r;cur++){ $F/xv&t
if(i1==mid+1) .8|"@
data[cur]=temp[i2++]; qP9`p4c8i
else if(i2>r) b$/7rVH!
data[cur]=temp[i1++]; 7 $Cv=8
else if(temp[i1] data[cur]=temp[i1++]; R_80J=%0
else f?QP(+M5.
data[cur]=temp[i2++]; Tkj
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} /mn'9=ks
} 7 $dibTER
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} V>4v6)N
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改进后的归并排序: "`KT7
H=XdgOui
package org.rut.util.algorithm.support; eV9,G8
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import org.rut.util.algorithm.SortUtil; b-J6{=k^
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/** Sq`Zuu9t
* @author treeroot .;dI&0Z
* @since 2006-2-2 /i"1e:cK
* @version 1.0 y=}o|/5"
*/ Pp;OkI``[
public class ImprovedMergeSort implements SortUtil.Sort { MdnapxuS
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private static final int THRESHOLD = 10; 0c&DSL}6
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/* T|--ZRYn
* (non-Javadoc) F~GIfJU
* AI$\wp#aw
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `{ \)Wuw
*/ &<(&u`S
public void sort(int[] data) { 'qoaMJxN`
int[] temp=new int[data.length]; <I{Yyl^
mergeSort(data,temp,0,data.length-1); Rf!$n7& \
} mW3IR3b
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private void mergeSort(int[] data, int[] temp, int l, int r) { "i%=QON`
int i, j, k; HC$}KoZkC
int mid = (l + r) / 2; A4)TJY
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if (l == r) Z>.('
return; g
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if ((mid - l) >= THRESHOLD) X|Nb81M
mergeSort(data, temp, l, mid); LO,:k+&A+
else LoO"d'{
insertSort(data, l, mid - l + 1); ?0d#O_la3
if ((r - mid) > THRESHOLD) }gQnr;lv
mergeSort(data, temp, mid + 1, r); W#L/|K!S
else T9YrB
insertSort(data, mid + 1, r - mid); QOv@rP/
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for (i = l; i <= mid; i++) { Dd:48sN:Jq
temp = data; b}ODc]3
} :>3?|Z"Aj
for (j = 1; j <= r - mid; j++) { }n k[WW
temp[r - j + 1] = data[j + mid]; !dwa. lZ&X
} WFfn:WSWU
int a = temp[l]; l(Uwci
int b = temp[r]; rrs0|=
for (i = l, j = r, k = l; k <= r; k++) { !wo
if (a < b) { G9~ 4?v6:
data[k] = temp[i++]; /!pJ" @
a = temp; CH0Nkf
} else { j
HEt
data[k] = temp[j--]; *dxE
( dP
b = temp[j]; 6&"GTK
} pE{Ecrc3|
} B#o6UO\
} $g
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V17!~
/** =DXN`]uN
* @param data 4
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* @param l qy/t<2'
* @param i Wfsd$kN6{
*/ be
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private void insertSort(int[] data, int start, int len) { d_Z?i#r0l
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); =F46v{la
} ;esOe\zjE
} RVh{wg
} Lwo9s)j<e
} YLb$/6gj6
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堆排序: +?6@%mW'
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package org.rut.util.algorithm.support; &&
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import org.rut.util.algorithm.SortUtil; X?'pcYSL
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/** }qBmt>#
* @author treeroot 5I/lF oy7
* @since 2006-2-2 fN6n2*wr(
* @version 1.0 pL,l
*/ yKC1h`2
public class HeapSort implements SortUtil.Sort{ 1H8/b D
[=^Wj`;
/* (non-Javadoc) Yb%#\.M/y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vU9:`@beu
*/ L fZF
public void sort(int[] data) { ;]W@W1)$
MaxHeap h=new MaxHeap(); ^`bMFsP
h.init(data); c-ql
for(int i=0;i h.remove(); D"&Sd@a{
System.arraycopy(h.queue,1,data,0,data.length); 6>z,7 [
} *$@u`nM
A}(o1wuw
private static class MaxHeap{ FzG>iC}
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void init(int[] data){ H4<Q}([w
this.queue=new int[data.length+1]; 'i4L.&
for(int i=0;i queue[++size]=data; l\ VrD2j8
fixUp(size); $t0JfDd6Ky
} _7'5I A
} _Sl3)
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private int size=0; QSOG(}w
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private int[] queue; ]D,\(|
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public int get() { [OR"9W&
return queue[1]; 6 !wk5#
} (QQkXlJ
E@4/<;eKK
public void remove() { .sD=k3d
SortUtil.swap(queue,1,size--); ~nApRC)0
fixDown(1); S1U[{R?,
} w[AL'1s]
file://fixdown ]88qjKL
private void fixDown(int k) { \} _,g
int j; -B?cF9
while ((j = k << 1) <= size) { aP#/%
if (j < size %26amp;%26amp; queue[j] j++; Q"H/RMo-
if (queue[k]>queue[j]) file://不用交换 I:("f+
H
break; z, n[}Q#u
SortUtil.swap(queue,j,k); tTWEhHQ`
k = j; 'UM *7
} d{Owz&PL
} A#Y:VavQ?
private void fixUp(int k) { OsKtxtLO
while (k > 1) { [pInF
Qh6
int j = k >> 1; *D.Ajd.G
if (queue[j]>queue[k]) 9dWz3b1[]
break; dg_w$#
SortUtil.swap(queue,j,k); cZ# %tT#
k = j; F6aC'<#/
} KtGbpcS$f
} !;0K=~(Y^
rR
8 6D
} 1xInU_SPf
#/{3qPN?@
} K~B
=}.gU WV
SortUtil: P>(FCX
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package org.rut.util.algorithm; n~.$iN
buT6)~lw
import org.rut.util.algorithm.support.BubbleSort; _n_()at)
import org.rut.util.algorithm.support.HeapSort; ;a| ~YM2I
import org.rut.util.algorithm.support.ImprovedMergeSort; ck\W'Y*Q7
import org.rut.util.algorithm.support.ImprovedQuickSort; iu3L9UfL[
import org.rut.util.algorithm.support.InsertSort; +wf9!_'
import org.rut.util.algorithm.support.MergeSort; 5lM2nhlf'b
import org.rut.util.algorithm.support.QuickSort; I&31jn_o
/
import org.rut.util.algorithm.support.SelectionSort; # 1dg%
import org.rut.util.algorithm.support.ShellSort; ;#:AM;
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/** @w`wJ*I4,
* @author treeroot _*MK"
* @since 2006-2-2 EX#AJ>?V(
* @version 1.0 dqs~K7O^E
*/ eze%RjO}
public class SortUtil { 2=/-,kOL_
public final static int INSERT = 1; zTc*1(^
public final static int BUBBLE = 2; Qj*.Z4ue
public final static int SELECTION = 3; xF@&wg
public final static int SHELL = 4; `.J17mQe"
public final static int QUICK = 5; >H ?k0M`L
public final static int IMPROVED_QUICK = 6; >##Z}auY
public final static int MERGE = 7; D:/q<<|
public final static int IMPROVED_MERGE = 8; "%\hDL;
public final static int HEAP = 9; 57-Hx;
0[e!/*_V
public static void sort(int[] data) { 6?;z\AP&
sort(data, IMPROVED_QUICK); 9g>)7Ne
} s^K2,D]P
private static String[] name={ hidQO h
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" zo8D"
}; 1GqSY|FSGp
r$8'1s37`
private static Sort[] impl=new Sort[]{ P=_fYA3
new InsertSort(), /KNDo^P
new BubbleSort(), ;S '?l0
new SelectionSort(), ,Aai-AGG@
new ShellSort(), {M5t)-
new QuickSort(), {_/ o' 6
new ImprovedQuickSort(), /;Hr{f jl{
new MergeSort(), _TGs .t
new ImprovedMergeSort(), *3rs+0
new HeapSort() igW* {)h3
}; -%@ah:iJ
lo(C3o'
public static String toString(int algorithm){ w jD<"p;P
return name[algorithm-1]; +`_0tM1
} oQObr
O9p s?{g
public static void sort(int[] data, int algorithm) { R TpNxr{[
impl[algorithm-1].sort(data); &T~X`{V]`
} m|F1_Ggz
iER@_?
public static interface Sort { \~"Ub"~I
public void sort(int[] data); qz{9ND|)
} YO$D-
e6Y>Bk
public static void swap(int[] data, int i, int j) { <r.QS[:h
int temp = data; pCA`OP);=
data = data[j]; IEMa/[n/
data[j] = temp; -v.\W y~\
} zh*D2/r
} FK593z