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[JAVA]用Java实现的各种排序

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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。 5{x[EXE'  
插入排序: Y9c9/_CSj  
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package org.rut.util.algorithm.support; k)4lX|}Vm  
";!1(xZr  
import org.rut.util.algorithm.SortUtil; hG0lR.:  
/** 4OESsN$O  
* @author treeroot 8^ZM U{  
* @since 2006-2-2 3=eGS  
* @version 1.0 My43\p  
*/ xQ(KmP2hl  
public class InsertSort implements SortUtil.Sort{ dpOL1rrE  
 ~d<`L[  
/* (non-Javadoc) iLQt9Hyk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HS7 G_  
*/ r^ Rcjyc1  
public void sort(int[] data) { =;-ju@d  
int temp; %RR|QY*  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); oqU#I~ -  
} -|iA!w#31  
} =S7C(;=4  
} EKJc)|8  
W$ d{  
} VL,?91qwe  
nr9#3 Lb  
冒泡排序: B0?@k  
gT\y&   
package org.rut.util.algorithm.support; _xZb;PbFE  
0kr& c;~  
import org.rut.util.algorithm.SortUtil; -*{(#k$  
y0y;1N'KK  
/** ]NhWhJ:  
* @author treeroot n;T  
* @since 2006-2-2 n<(5B|~y  
* @version 1.0 Kd|l\k!  
*/ ;>x1)|n5  
public class BubbleSort implements SortUtil.Sort{ J hq5G"  
1:l&&/Wy  
/* (non-Javadoc) dUVTQ18F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4!b'%)   
*/ . R8W<  
public void sort(int[] data) { K &~#@I;  
int temp; }n&JZ`8<s  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 1*`JcUn,>  
if(data[j] SortUtil.swap(data,j,j-1); #z54/T  
} KcyM2hE7  
} u$`x]K=Zsm  
} Mm[1Z;H  
} |\L,r}1N  
w"Y55EURB  
} ng)yCa_Ny  
[g 68O*  
选择排序: K#pt8Q  
%!/liS  
package org.rut.util.algorithm.support; #i#.tc  
$ax%K?MBD  
import org.rut.util.algorithm.SortUtil; )k<~}wvQ0  
=+#RyV  
/** +OuG!3+w  
* @author treeroot \YF!< 2|[  
* @since 2006-2-2 5T@'2)BI=  
* @version 1.0 f#-T%jqnK  
*/ we).8%)'  
public class SelectionSort implements SortUtil.Sort { (HD>vNha1  
K{|dt W&  
/* `Q_ R/9~  
* (non-Javadoc) HC, 0" W  
* @^jLYu|W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4]Nr$FY  
*/ 3ncvM>~g  
public void sort(int[] data) { vM;dPE7  
int temp; 6L% R@r  
for (int i = 0; i < data.length; i++) { S{|)9EKw  
int lowIndex = i; -`1L[-<d=/  
for (int j = data.length - 1; j > i; j--) { BGYm]b\j[  
if (data[j] < data[lowIndex]) { \}Kp=8@nE  
lowIndex = j; xB]v  
} +P;D}1B#I?  
} lcJumV=%>  
SortUtil.swap(data,i,lowIndex); 1OwkLy,P  
} X#C7r@H  
} X{5DPhB,  
$GK m`I"  
} e<wj5:M|  
+s 0Bt '  
Shell排序: u5|e9(J  
^i k|l=  
package org.rut.util.algorithm.support; 4sgwQ$m)  
u:kY4T+Z  
import org.rut.util.algorithm.SortUtil; kEDZqUD  
L|'ME| '  
/** 9&FV =}MO  
* @author treeroot ,TA [el%#  
* @since 2006-2-2 j`pR;XL1[  
* @version 1.0 i*E`<9  
*/ ee?ZkU#@  
public class ShellSort implements SortUtil.Sort{ %*; 8m'  
c|a|z}(/J  
/* (non-Javadoc) `lOoT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Xr;noV-X  
*/ W3j|%  
public void sort(int[] data) { l[0P*(I,  
for(int i=data.length/2;i>2;i/=2){ 6spk* 8e  
for(int j=0;j insertSort(data,j,i); u(a&x|WY  
} 6?x{-Zj ^?  
} HcUz2Rm5XP  
insertSort(data,0,1); K1WoIv<Ym  
}  -KiS6$-  
uk/+ i`=  
/** DfFPGFv  
* @param data ]>i0;R ME  
* @param j />7/S^  
* @param i =KD*+.'\/  
*/ vw6FvE`lC  
private void insertSort(int[] data, int start, int inc) { muq|^Hfb  
int temp; @S:/6__  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 1qN9bwRO  
} $q+`GXc-  
} ^*W<$A_  
} U.0/r!po  
v%Q7\X(  
} }}Uv0g8D  
><7`$2Or  
快速排序: zSXC  
~jTn jx  
package org.rut.util.algorithm.support; Qeog$g.HI  
*G=AhH$t  
import org.rut.util.algorithm.SortUtil; c'qM$KN9G  
mf'1.{  
/** B.WkHY%/  
* @author treeroot j( :A  
* @since 2006-2-2 z Pc;[uHT  
* @version 1.0 .AW*7Pp`f  
*/ 9Q1GV>j>B  
public class QuickSort implements SortUtil.Sort{ MF(~!SOIG  
3%a37/|~y  
/* (non-Javadoc) :.Sc[UI0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kl9z;(6p  
*/ k| o,gcU  
public void sort(int[] data) { ![tI(TPq  
quickSort(data,0,data.length-1); v[ '5X  
} JwczE9~o  
private void quickSort(int[] data,int i,int j){ ?@(H. D6'v  
int pivotIndex=(i+j)/2; uK5Px!  
file://swap %Q~Lk]B?t  
SortUtil.swap(data,pivotIndex,j); ::`wx@  
0E[Se|!  
int k=partition(data,i-1,j,data[j]); 4et#Q  
SortUtil.swap(data,k,j); ^)pY2t<^  
if((k-i)>1) quickSort(data,i,k-1); +60;z4y}w  
if((j-k)>1) quickSort(data,k+1,j); rXX|?9 '  
1ouTZ'c?  
} z\5Nni/~6D  
/** 0wcWDE 9  
* @param data Q[KR,k  
* @param i Shd,{Z)-Tg  
* @param j }YO}LQ-|  
* @return w}b+vh^3Wy  
*/ PEl]HI_H  
private int partition(int[] data, int l, int r,int pivot) { 7A-rF U$  
do{ 7mNskb|  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ^*Fkt(ida  
SortUtil.swap(data,l,r); M3kE91  
} 20)Il:x  
while(l SortUtil.swap(data,l,r); #!Fs[A5%  
return l; [\yI<^_a  
} d:''qgz`  
=1qkoc~  
} [_-K  
KA#-X2U/  
改进后的快速排序: Hkt'~ L*   
]0le=Ee^%  
package org.rut.util.algorithm.support; +s}28U!  
E>D@#I>  
import org.rut.util.algorithm.SortUtil; swA"_A8>u  
W~FA9Jd'Z  
/** ](D [T  
* @author treeroot s#[Ej&2[=  
* @since 2006-2-2 STI3|}G*P  
* @version 1.0 ) b8*>k  
*/ ^B9wmxe  
public class ImprovedQuickSort implements SortUtil.Sort { 3!L)7Z/  
'c D"ZVm1  
private static int MAX_STACK_SIZE=4096; 8<xy *=%  
private static int THRESHOLD=10; ffVYlNQ7L  
/* (non-Javadoc) 3R><AFMY?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (" %yV_R  
*/ ~/%){t/uLY  
public void sort(int[] data) { mUbaR  
int[] stack=new int[MAX_STACK_SIZE]; 'z'm:|JW  
enj2xye%Y  
int top=-1; %9.KH  
int pivot; AF-.Nwp   
int pivotIndex,l,r; R YNz TA  
H>]x<#uz)  
stack[++top]=0; =$Z'F<|d  
stack[++top]=data.length-1; OUPpz_y  
?6bE!36  
while(top>0){ <k!G%R<9  
int j=stack[top--]; _p.{|7  
int i=stack[top--]; 4E)[<%  
$;1~JOZh  
pivotIndex=(i+j)/2; 9[*kpMC  
pivot=data[pivotIndex]; \=<.0K A~  
6>Y}2fT}o3  
SortUtil.swap(data,pivotIndex,j); iC]}M  
v oxlo>:  
file://partition #a&Vx&7L  
l=i-1; g:g>;" B O  
r=j; I"1\R8 R  
do{ q.7CPm+  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ^ytd~iK8  
SortUtil.swap(data,l,r); $j/F7.S  
} :EjIV]e  
while(l SortUtil.swap(data,l,r); U DG _APf  
SortUtil.swap(data,l,j); I}=}S"v  
r%m2$vx#  
if((l-i)>THRESHOLD){ 2i)y'+s  
stack[++top]=i; 1"k@O)?JP  
stack[++top]=l-1; :<W 8uDAs  
} QI- 3m qL  
if((j-l)>THRESHOLD){ S;g~xo  
stack[++top]=l+1; *)1,W+A5L  
stack[++top]=j; {IVqV6:  
} b/EvcN8 }  
)+G(4eIT  
} Q7\Ax0  
file://new InsertSort().sort(data); =bzTfki  
insertSort(data); \Mi< ROp5  
} N?XN$hwdZ  
/** , ]MX&]  
* @param data mR^D55k  
*/ k#.co~kS  
private void insertSort(int[] data) { a srkuAS  
int temp; 4$^=1ax  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); K02./ut-  
} 2gGJ:,RC$  
} {e^llfj$#  
} Tla*V#:Ve  
vB p5&*  
} k|V{jB G"@  
580t@?  
归并排序: =h)H`  
Fmu R(f=  
package org.rut.util.algorithm.support; <O WPG,  
R Mm`<:H_  
import org.rut.util.algorithm.SortUtil; T^'i+>F!w  
|z~?"F6 Y<  
/** :97`IV%  
* @author treeroot T2d pn%I  
* @since 2006-2-2 O6pjuhMx  
* @version 1.0 H{BjxZ~)  
*/ -4]6tt'G  
public class MergeSort implements SortUtil.Sort{ ]k8XLgJ  
ZBGI_9wZ  
/* (non-Javadoc) oAL-v428  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X DX_c@U  
*/ ,'j5tU?c  
public void sort(int[] data) { ;@L#0  
int[] temp=new int[data.length]; ObCwWj^qO  
mergeSort(data,temp,0,data.length-1); ivm.ng[  
} D fb&/ }  
"_`~9qDy  
private void mergeSort(int[] data,int[] temp,int l,int r){ f t7wMi  
int mid=(l+r)/2; =p"0G%+%  
if(l==r) return ; s{/nO)  
mergeSort(data,temp,l,mid); {^qc`oF  
mergeSort(data,temp,mid+1,r); Eq?o /'e  
for(int i=l;i<=r;i++){ fTeo,N  
temp=data; )Mok$  
} EW`3h9v~  
int i1=l; !|!V}O  
int i2=mid+1; }fhVn;~}8  
for(int cur=l;cur<=r;cur++){ >C i=H(8vN  
if(i1==mid+1) mF1oY[xa_  
data[cur]=temp[i2++]; &ke4":7X  
else if(i2>r) ^2=zp.)  
data[cur]=temp[i1++]; Gd"*mL d  
else if(temp[i1] data[cur]=temp[i1++]; k5($b{  
else *<@  
data[cur]=temp[i2++]; `/U:u9H9v  
} Gc'H F"w  
} 4MIVlg9  
x83XJFPWL  
} (ZnA#%  
0nS6<:  
改进后的归并排序: IE6/ E  
@dXf_2Tv=  
package org.rut.util.algorithm.support; CtfSfSAUuu  
zQ [mO  
import org.rut.util.algorithm.SortUtil; GA|q[<U  
SbZk{lWcq  
/** |qr[*c3$1  
* @author treeroot ~`BOz P  
* @since 2006-2-2 6Z"%vrH  
* @version 1.0 Wp'\NFe 8  
*/ D>mLSh  
public class ImprovedMergeSort implements SortUtil.Sort { ;f><;X~KX  
*0U(nCT&m  
private static final int THRESHOLD = 10; _EY :vv  
H(AYtnvB  
/* BZj[C=#x  
* (non-Javadoc) H [v~  
* \DHCf 4,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =nsY[ s<  
*/ <7p2OPD  
public void sort(int[] data) { \yy!?UlaI  
int[] temp=new int[data.length]; 1w5nBVC*$V  
mergeSort(data,temp,0,data.length-1); Ip4~qGJ  
} LP\ Qwj{  
52"/Zr}j  
private void mergeSort(int[] data, int[] temp, int l, int r) { e nNn*.*|  
int i, j, k; k\[2o  
int mid = (l + r) / 2; 56 )B/0=  
if (l == r) iZ:-V8{  
return; QIw.`$H+  
if ((mid - l) >= THRESHOLD) aql*@8 )m  
mergeSort(data, temp, l, mid); 1a' JNe$  
else &Ls0!dWC  
insertSort(data, l, mid - l + 1); RI`A<*>w  
if ((r - mid) > THRESHOLD) }'{(rU  
mergeSort(data, temp, mid + 1, r); |QY+vO7fxj  
else &M2x`  
insertSort(data, mid + 1, r - mid); RBb@@k[v  
QdRMp n}q  
for (i = l; i <= mid; i++) { JDP#tA3  
temp = data; JWBWa-  
} 6!'yU=Z`  
for (j = 1; j <= r - mid; j++) { 6R<%. -qr  
temp[r - j + 1] = data[j + mid]; }}]Y mf  
} F-X>| oK>z  
int a = temp[l]; & #|vGhA  
int b = temp[r]; 7#&s G  
for (i = l, j = r, k = l; k <= r; k++) { 4qMHVPJv\  
if (a < b) { 81g&WQ'  
data[k] = temp[i++]; jm?mO9p~  
a = temp; MG<~{Y84}  
} else { X6;aF ;"5  
data[k] = temp[j--]; Y~CS2%j  
b = temp[j]; EKt-C_)U  
} eDm,8Se  
} ]gEfm~YV  
} zbnQCLs  
'FVT"M~  
/** r=k}EP&<  
* @param data  WsoB!m  
* @param l Mqpo S  
* @param i Nr)(&c8  
*/ NUU}8a(K  
private void insertSort(int[] data, int start, int len) { ,Q:dAe[ZsX  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); _#+9)*A  
} .{} t[U  
} 2rH6ap  
} |N g[^  
} nYe}d!  
|EApKxaKD  
堆排序: A~6 Cs  
F,W(H@ ~x  
package org.rut.util.algorithm.support; H^s SHj  
\uaJw\EZ  
import org.rut.util.algorithm.SortUtil; lN&GfPP6  
qkEy$[D9  
/** iaC$K@a{  
* @author treeroot }a`LOBne  
* @since 2006-2-2 '-x%?Ll  
* @version 1.0 J0oR]eT}  
*/ 9+/|sU\.%  
public class HeapSort implements SortUtil.Sort{ 1@ina`!1O  
u>E+HxUJ  
/* (non-Javadoc) &yN<@.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NanU%# &  
*/ W6PGv1iaW>  
public void sort(int[] data) { hi=U  
MaxHeap h=new MaxHeap(); ?( '%QfT  
h.init(data); _PaO w%Y9  
for(int i=0;i h.remove(); KV6S-  
System.arraycopy(h.queue,1,data,0,data.length); `7j,njCX.  
} gu/Yc`S[  
aJF`rLm  
private static class MaxHeap{ bcZonS  
IIPf5 Z}A  
void init(int[] data){ pxF!<nN1,  
this.queue=new int[data.length+1]; -K !-a'J  
for(int i=0;i queue[++size]=data; 0(kp>%mbB  
fixUp(size); +u#x[xO  
} 7%'<}u  
} |RmBa'.)z  
cBA[D~s  
private int size=0; Nt'5}  
mvw:E_  
private int[] queue; j oG>=o  
NplSkv  
public int get() { !9 F+uc5  
return queue[1]; 9p.>L8  
} f[RnL#*xJU  
<ZiO[dEV  
public void remove() { B/71$i   
SortUtil.swap(queue,1,size--); m|k,8guG  
fixDown(1); 7Av]f3Zr  
} 4Y2>w  
file://fixdown `zL9d lZ  
private void fixDown(int k) { J]UH q$B  
int j; '3Ri/V,  
while ((j = k << 1) <= size) { #&Ee5xM=  
if (j < size %26amp;%26amp; queue[j] j++; ,Tx8^|b#F  
if (queue[k]>queue[j]) file://不用交换 K+\hv~+@  
break; r$7rYxFR  
SortUtil.swap(queue,j,k); P#xn!fMi  
k = j; B]vj1m`9  
} 6PH*]#PfoD  
} )N/KQ[W  
private void fixUp(int k) { ,aJrN!fzU  
while (k > 1) { vEsSqzc  
int j = k >> 1; 2R!W5gs1<  
if (queue[j]>queue[k]) }FXRp=s  
break; 3XRG"  
SortUtil.swap(queue,j,k); D6t]E)FH  
k = j; RBXoU'.  
} !=we7vK}  
} cMv3` $  
UQFuEI<1-  
} R4/@dA0  
Ir'f((8:  
} (0+m&, z  
`g=~u{ 0  
SortUtil: *pMA V [^  
#5D+XBT  
package org.rut.util.algorithm; DkIF vsLK  
9E^p i LA  
import org.rut.util.algorithm.support.BubbleSort; Ba6xkEd  
import org.rut.util.algorithm.support.HeapSort; UU/|s>F  
import org.rut.util.algorithm.support.ImprovedMergeSort; g6V*wjC  
import org.rut.util.algorithm.support.ImprovedQuickSort; <G >PPf}  
import org.rut.util.algorithm.support.InsertSort; N[-)c,O  
import org.rut.util.algorithm.support.MergeSort; m%&B4E#3T  
import org.rut.util.algorithm.support.QuickSort; bhmjH(.t  
import org.rut.util.algorithm.support.SelectionSort; .kIf1-(<U  
import org.rut.util.algorithm.support.ShellSort; msylb~^  
*QG;KJ%  
/** V'.|IuN  
* @author treeroot pB./L&h  
* @since 2006-2-2 i`qh|w/b_  
* @version 1.0 `2PT 8UM  
*/ q4{tH  
public class SortUtil { Fn,|J[sC  
public final static int INSERT = 1; GLyh1qNX  
public final static int BUBBLE = 2; ]_?y[@ZP  
public final static int SELECTION = 3; u i1m+  
public final static int SHELL = 4; RHbwq]  
public final static int QUICK = 5; w.f [)  
public final static int IMPROVED_QUICK = 6; 9YABr> ?  
public final static int MERGE = 7; $b} +5  
public final static int IMPROVED_MERGE = 8; #pfosC[  
public final static int HEAP = 9; 6ZBD$1$A!  
/`> P|J  
public static void sort(int[] data) { $}$@)!-  
sort(data, IMPROVED_QUICK); _u$K Lqt/,  
} ]Ho`*$dD  
private static String[] name={ ny={V*m  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" R 28*  
}; Mk[`HEO  
YqgW8 EM  
private static Sort[] impl=new Sort[]{ 3iw9jhK!W  
new InsertSort(), j&.BbcE45  
new BubbleSort(), 7krA+/Qr(  
new SelectionSort(), d}_c (  
new ShellSort(), 7 w,FA  
new QuickSort(), Ks(U]G"V  
new ImprovedQuickSort(), U5"OhI  
new MergeSort(), &v,p_'k  
new ImprovedMergeSort(), U@nwSfp:G  
new HeapSort() A]$+ `uS\  
}; k#xpY!'7  
T"U t).  
public static String toString(int algorithm){ 8BDL{?Mu  
return name[algorithm-1]; GwBQ p Njy  
} |T*qAJ8c  
mC`! \"w  
public static void sort(int[] data, int algorithm) { q;.]e#wvh  
impl[algorithm-1].sort(data); CN(4;-so)  
} 46Nf|~  
UmX[=D|  
public static interface Sort { Oy$BR <\  
public void sort(int[] data); avu,o   
} ;!?K.,N:N  
o"[bIXf-h  
public static void swap(int[] data, int i, int j) { u7WM6X  
int temp = data; 4sjr\9IDC  
data = data[j]; +;;%Atgn  
data[j] = temp; }8 _9V|E  
} J_ |x^  
} -^v}T/Kl#  
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