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。 zghm2{:`?g
插入排序: (RS:_]
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package org.rut.util.algorithm.support; B6oAW ,3
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import org.rut.util.algorithm.SortUtil; F#wa)XH
/** zl?N1>KS
* @author treeroot E9hWn0 e
* @since 2006-2-2 _O<{H '4NO
* @version 1.0 xGA0]
_
*/ `pUArqf
public class InsertSort implements SortUtil.Sort{ o7seGw<$X
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/* (non-Javadoc) PBv43uIL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VA.1JBQ
*/ }6N|+z.cU
public void sort(int[] data) { x6tY _lzJ
int temp; !W7ekPnK
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1);
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} Hd`RR3J
} eX@q'Zi
} Uo
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} Yv-uC}e
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冒泡排序: Akf9nT
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package org.rut.util.algorithm.support; ,Pm/ci(s
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import org.rut.util.algorithm.SortUtil; `-\"p;Hp0
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/** s_TM!LRUcw
* @author treeroot oJ+$&P(
* @since 2006-2-2 o*xEaD
* @version 1.0 TbuR?#
*/ gjV&X N
public class BubbleSort implements SortUtil.Sort{ 91XHz14
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/* (non-Javadoc) 5KSsRq/8"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -(G2@NG
*/ !c7Od
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public void sort(int[] data) { D>Z_N?iR
int temp; 0a'y\f:6*
for(int i=0;i for(int j=data.length-1;j>i;j--){ MC@cT^Z^
if(data[j] SortUtil.swap(data,j,j-1); O7sn>uO
} < lrw7 T
} )J0VB't
} t;'.D @
} _HQa3wj
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} HApP*1J^c
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选择排序: 5;l_-0=
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package org.rut.util.algorithm.support; (XH)1 -Z!
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import org.rut.util.algorithm.SortUtil; {UN z UaE
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/** 7>LhXC
* @author treeroot J:(l&
* @since 2006-2-2 ;`+,gVrp
* @version 1.0 'Bx7b(xqk
*/ {TNAK%'v
public class SelectionSort implements SortUtil.Sort { "=;&{N~8U
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/* Mi/_hzZ\
* (non-Javadoc) )C@,mgh
* t-Wn@a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) = DgD&_
*/ DxBt83e
public void sort(int[] data) { &}uO ]0bR
int temp; pK`rm"6G
for (int i = 0; i < data.length; i++) { cPXvTVvs
int lowIndex = i; iR-O6*PTC
for (int j = data.length - 1; j > i; j--) { QWkw$mcf
if (data[j] < data[lowIndex]) { slx^" BF^
lowIndex = j; u=[oo@Rk`
} DiX4wmQ
} $4"OD"Z Cq
SortUtil.swap(data,i,lowIndex); .H&;pOf
} %WNy=V9txp
} oKac~}_KL
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} mR^D55k
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Shell排序: a
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package org.rut.util.algorithm.support; K02./ut-
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import org.rut.util.algorithm.SortUtil; cg~FW2Q
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/** -h_v(s2
* @author treeroot #E1*1E
* @since 2006-2-2 sw1XN?O
* @version 1.0 K^S#?T|[9
*/ k[p
public class ShellSort implements SortUtil.Sort{ 'a}{s>{O
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/* (non-Javadoc) d2Y5'A0X
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Rl~Tw9
*/ xOT3>$
public void sort(int[] data) { +Il=gL1
for(int i=data.length/2;i>2;i/=2){ b6lL8KOu
for(int j=0;j insertSort(data,j,i); sDiYm}W
} .UcS4JU
} y+PukHY
insertSort(data,0,1); pd6d(
} e:l 6;
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/** (F)zj<{f
* @param data ivm.ng[
* @param j A9#2.5
* @param i t*x;{{jL#(
*/ %(E6ADB
private void insertSort(int[] data, int start, int inc) { +[ F8>9o&
int temp; s{/nO)
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); {^qc`oF
} Eq?o/'e
} fTeo,N
} )Mok$
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} m0 P5a%D
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快速排序: Rz)#VVYC=
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package org.rut.util.algorithm.support; 1a<,/N}}t
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import org.rut.util.algorithm.SortUtil; Gd"*mLd
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/** 3FdoADe{{
* @author treeroot QZ6M,\
* @since 2006-2-2 8_lD*bEt
* @version 1.0 4MIVlg9
*/ ]?r8^L yZ4
public class QuickSort implements SortUtil.Sort{ (ZnA#%
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/* (non-Javadoc) IE6/
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @dXf_2Tv=
*/ CtfSfSAUuu
public void sort(int[] data) { zQ[mO
quickSort(data,0,data.length-1); GA|q[<U
} SbZk{lWcq
private void quickSort(int[] data,int i,int j){ |qr[*c 3$1
int pivotIndex=(i+j)/2; ~`BOzP
file://swap 6Z"%vrH
SortUtil.swap(data,pivotIndex,j); Wp'\NFe8
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int k=partition(data,i-1,j,data[j]); ;f><;X~KX
SortUtil.swap(data,k,j); *0U(nCT&m
if((k-i)>1) quickSort(data,i,k-1); IV*}w"r
if((j-k)>1) quickSort(data,k+1,j); i ]_fh C
a'\`Mi@rb
} QV't+)uUVo
/** y`BLIEI
* @param data "7l}X{b
* @param i \yxr@z1_b
* @param j lG{J
* @return I;7{b\t
Q
*/ Rpr#
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private int partition(int[] data, int l, int r,int pivot) { 'e&4#VLH^
do{ FLWz7Rj
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); n Au>i<
SortUtil.swap(data,l,r); BoXCc"q[
} %*uqtw8
while(l SortUtil.swap(data,l,r); nuQ"\ G
return l; D(&OyZ~Q+
} =_XcG!"
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} }QI*Ns
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改进后的快速排序: X#o:-FKf
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package org.rut.util.algorithm.support; vhg4E80Kr
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import org.rut.util.algorithm.SortUtil; i.<}X
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/** brFOQU?
* @author treeroot D|S)/o6
* @since 2006-2-2 6R<%.-qr
* @version 1.0 A+p}oY '
*/ P8EGd}2{8
public class ImprovedQuickSort implements SortUtil.Sort { mZ5UaSG
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private static int MAX_STACK_SIZE=4096; qEpBzQ&gX6
private static int THRESHOLD=10; g&[g?L
/* (non-Javadoc) 9\;EX
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V *]!N
*/ qM`SN4C
public void sort(int[] data) { ZTun{Dw{
int[] stack=new int[MAX_STACK_SIZE]; qg|+BIiUz
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int top=-1; t_N
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int pivot; YK- R|z6K
int pivotIndex,l,r; &sRyM'XI
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stack[++top]=0; @s/ qOq?
stack[++top]=data.length-1; h"'f~KM9a>
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while(top>0){ #4hP_Vhc
int j=stack[top--]; kju:/kY A
int i=stack[top--]; MhsG9q_%
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pivotIndex=(i+j)/2; oM VJ+#[x
pivot=data[pivotIndex]; =FKB)#N
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SortUtil.swap(data,pivotIndex,j); AE$)RhY`
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file://partition
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l=i-1; P-mrH
r=j; i||YD-hkK
do{ !F8
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while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); lL^7x
SortUtil.swap(data,l,r); cnj_tC=zt
} N+tS:$V
while(l SortUtil.swap(data,l,r); {/Cd ^CK
SortUtil.swap(data,l,j);
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if((l-i)>THRESHOLD){ M}vPWWcl
stack[++top]=i; 4 A<c@g2
stack[++top]=l-1; CuGk?i
} zknD(%a
if((j-l)>THRESHOLD){ cnsGP*w
stack[++top]=l+1; =_86{wlk
stack[++top]=j; Xnh1pwDhe<
} w5;EnI
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} l{R)yTO
file://new InsertSort().sort(data); Xu$*ZJ5w
insertSort(data); aZ^lI
6@+4
} ^>"?!lv
/** :b=0_<G
* @param data bc ZonS
*/ IIPf5
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private void insertSort(int[] data) { pxF!<nN1,
int temp; -K!-a'J
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0(kp>%mbB
} /?GBp[(0
} jyC6:BNust
} qL#R
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} I,[EL{fz
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归并排序: fP|\1Y?CS
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package org.rut.util.algorithm.support; &td#m"wI
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import org.rut.util.algorithm.SortUtil; u|ZO"t
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/** oMPQkj;
* @author treeroot +R_U
* @since 2006-2-2 X}yYBf/R`
* @version 1.0 \,Ndg*qC
*/ ra&C|"~E
public class MergeSort implements SortUtil.Sort{ %F~
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/* (non-Javadoc) kr?|>6?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A3n"zxU
*/ -'(:Sq,4o
public void sort(int[] data) { (}:xs,Ax
int[] temp=new int[data.length]; GZ={G2@=I
mergeSort(data,temp,0,data.length-1); ".\(A f2
} |?>h$'
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private void mergeSort(int[] data,int[] temp,int l,int r){ l.BNe)1!22
int mid=(l+r)/2; DH^^$)
if(l==r) return ; 8vo}
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mergeSort(data,temp,l,mid); .>YJ95&\
mergeSort(data,temp,mid+1,r); UO wNcY
for(int i=l;i<=r;i++){ |`nVr>QF&
temp=data; h2>0#Vp3j
} ,&-[$,
int i1=l; b$`O|S
int i2=mid+1; .phQ7":`
for(int cur=l;cur<=r;cur++){ ^wlep1D
if(i1==mid+1) <'-me09C*
data[cur]=temp[i2++]; FuKNH~MevQ
else if(i2>r) $W]bw#NH
data[cur]=temp[i1++]; Oc.>$
else if(temp[i1] data[cur]=temp[i1++]; !xI![N^
else =Vs<DO{|4q
data[cur]=temp[i2++]; H[r0jREK
} lg1D>=(mY
} f"Iyo:Wt
2?j1~ ]DvZ
} )B_h"5X4\y
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改进后的归并排序: f/yK|[g~
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package org.rut.util.algorithm.support; }#J}8.
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import org.rut.util.algorithm.SortUtil; kQ8WO|bA
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/** UwU]l17~
* @author treeroot UL%ihWq
* @since 2006-2-2 F?B=:8,}
* @version 1.0 #k)\e;,X
*/ ooQ( bF
public class ImprovedMergeSort implements SortUtil.Sort { B^9 #X5!
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private static final int THRESHOLD = 10; ZTZE_[
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/* WQx;tX
* (non-Javadoc) KfNXX>'
* %u}sVRJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :X
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*/ Vd4osBu{fY
public void sort(int[] data) { ;"Y6&YP<
int[] temp=new int[data.length]; #F@7>hd1
mergeSort(data,temp,0,data.length-1); M6iKl
} bG)MG0<TT
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private void mergeSort(int[] data, int[] temp, int l, int r) { #4M0%rN
int i, j, k; &/9oi_r%r
int mid = (l + r) / 2; t^hkGYj!2
if (l == r) SfUUo9R(sm
return; 3)Y:c2
if ((mid - l) >= THRESHOLD) <.ky1aex7
mergeSort(data, temp, l, mid);
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else $Stu-l1e a
insertSort(data, l, mid - l + 1); $P3nP=mf
if ((r - mid) > THRESHOLD) [3Rj?z"S
mergeSort(data, temp, mid + 1, r); L:-lqag!
else s`RJl V
insertSort(data, mid + 1, r - mid); '9@R=#nd
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for (i = l; i <= mid; i++) { s jm79/
temp = data; |T *qAJ8c
} R:N-y."La.
for (j = 1; j <= r - mid; j++) { +ctv]'P_
temp[r - j + 1] = data[j + mid]; K5&C}Ey1
} LnS>3$t*
int a = temp[l]; MFuI&u!g:
int b = temp[r]; c ?XUb[
for (i = l, j = r, k = l; k <= r; k++) { ~py0Vx,F
if (a < b) { BtChG] N|
data[k] = temp[i++];
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a = temp; ;4$C$r!t
} else { b_yXM
data[k] = temp[j--]; u,:`5*al{
b = temp[j]; Bw.&3efd
} 8[;oUVb5
} (B<AK4G
} KTt$Pt/.
Xkom@F~]
/** ton`ji\^
* @param data :g[x;Q[@
* @param l {LHe 6#
* @param i ~-wJ#E3g
*/ X:&p9_O@
private void insertSort(int[] data, int start, int len) { /}_c7+//
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); :n9~H+!
} bK9~C" k
} C)s1'
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} GK?R76d
} pIiED9
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堆排序: :
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9PK-r;2
package org.rut.util.algorithm.support; \/'n[3x
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import org.rut.util.algorithm.SortUtil; vqMk)htIz
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/** M l?)Sc"\7
* @author treeroot PRC)GP&q
* @since 2006-2-2 /? 1Yf
* @version 1.0 L^1q/4${
*/ z.&%>%TPP
public class HeapSort implements SortUtil.Sort{ cE5Zxcn
?^ezEpW
/* (non-Javadoc) `sy &dyM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3,I >.3
*/ D*'M^k|1
public void sort(int[] data) { AO$PuzlLh
MaxHeap h=new MaxHeap(); zN/~a)
h.init(data); 2%C5P0;QX
for(int i=0;i h.remove(); 7u5\#|yL
System.arraycopy(h.queue,1,data,0,data.length); u%T$XG
} %yM'
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N 3p 7 0
private static class MaxHeap{ ."Ix#\|x
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void init(int[] data){ ugCS &
this.queue=new int[data.length+1]; h?3l
for(int i=0;i queue[++size]=data; Ny,A#-?
fixUp(size); MI'l4<>u
} PJ'lZu8?x
} V,"iMo
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private int size=0; ivz?-X4]
w<>6>w@GZ
private int[] queue; wU)5Evp[
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public int get() { bSR+yr'?
return queue[1]; _JJKbi
} _% 9+U[@
) v5n "W
public void remove() { 7h9[-d6
SortUtil.swap(queue,1,size--); ^}/
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fixDown(1); W$Q)aA7
} ,9tbu!Pvq
file://fixdown %_R|@cyD
private void fixDown(int k) { ^Xy$is3
int j; <C"N X
while ((j = k << 1) <= size) { ,x"yZ
if (j < size %26amp;%26amp; queue[j] j++; 8<wuH#2<y
if (queue[k]>queue[j]) file://不用交换 dF11Rj,~ 8
break; ^x"c0R^
SortUtil.swap(queue,j,k); |5B,cB_
k = j; FWpN:|X BS
} 4:e q{n
} Y:!/4GF
private void fixUp(int k) { xCp+<|1
while (k > 1) { {&}/p-S
int j = k >> 1;
2C33;?M
if (queue[j]>queue[k]) M|5]#2J_2
break; JlDDM
%
SortUtil.swap(queue,j,k); >+jbMAYSq
k = j; fZV8o$V
} 7|M $W(P
} Z:lB:U'o
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} [zTYiNa
PMN2VzE4{
} 7hF,gl5
akvwApn5
SortUtil: W^d4/]
g t^]32$
package org.rut.util.algorithm; 2VV[*QI
HEB/\
import org.rut.util.algorithm.support.BubbleSort; (\mulj
import org.rut.util.algorithm.support.HeapSort; $dZ>bXUw:
import org.rut.util.algorithm.support.ImprovedMergeSort; xngeV_xc2
import org.rut.util.algorithm.support.ImprovedQuickSort; N{V5 D
import org.rut.util.algorithm.support.InsertSort; &!DZW5
import org.rut.util.algorithm.support.MergeSort; F;Q_*0mIQ
import org.rut.util.algorithm.support.QuickSort; MX`Wg
import org.rut.util.algorithm.support.SelectionSort; `mKlv~$1^
import org.rut.util.algorithm.support.ShellSort; > 0Twr
h%1~v$W`
/** &ap`}^8pM
* @author treeroot vpeBQ=2\
* @since 2006-2-2 {GQ
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* @version 1.0 8>VI$
*/ [Zt#
c C+
public class SortUtil { KI Plb3oh
public final static int INSERT = 1; hVipr hC
public final static int BUBBLE = 2; =|gJb|?w
public final static int SELECTION = 3; 3Zaq#uA
public final static int SHELL = 4; N0K>lL=
public final static int QUICK = 5; cbh#E)['
public final static int IMPROVED_QUICK = 6; o,CA;_
public final static int MERGE = 7; uhTKCR~
public final static int IMPROVED_MERGE = 8; ~.W=
public final static int HEAP = 9; Wd^lt7(j
OC?Zw@
public static void sort(int[] data) { 18O@ 1M
sort(data, IMPROVED_QUICK); '"xL}8HX}
} +24|_Lx0
private static String[] name={ 3b|7[7}&
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" L_Y9+
e
}; )RA\kZ "
O>SuZ>g+7
private static Sort[] impl=new Sort[]{ i?a,^UM5n[
new InsertSort(), (0OSGG9
new BubbleSort(), oN[Fz a>
new SelectionSort(), tKG;k"wk
new ShellSort(), "GwWu-GS
new QuickSort(), 192 .W+H<
new ImprovedQuickSort(), L,b|Iq
new MergeSort(), Ws^+7u
new ImprovedMergeSort(), Evr2|4|O~
new HeapSort() to!mz\F
}; e0v9uQ%F5
dysX
public static String toString(int algorithm){ DOF?(:8Y
return name[algorithm-1]; 42Aje
} 8S.')<-f
W+d9cM=
public static void sort(int[] data, int algorithm) { C(F1VS
impl[algorithm-1].sort(data); u}-d7-=
} FylWbQU9
hF7V !*5
public static interface Sort { G}=`VYK
public void sort(int[] data); CdBthOPX)
} *Nvy+V
k_*XJ <S!Y
public static void swap(int[] data, int i, int j) { CF3E]dt
int temp = data; YW8K
$W
data = data[j]; W>p\O9BG
data[j] = temp; 5E]UI YAkV
} hi ;WFyJTu
} Exep+x-