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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。 %Lp2jyv.  
插入排序: zP :~O  
e{fZ}`=7y  
package org.rut.util.algorithm.support; W>Mse[6`c  
\;-=ODC  
import org.rut.util.algorithm.SortUtil; J4gI=@e  
/** d&aBs++T  
* @author treeroot #D`S  
* @since 2006-2-2 S)"##-~`T  
* @version 1.0 ;Ze"<U  
*/ 5jn$7iE`  
public class InsertSort implements SortUtil.Sort{ 0NQ7#A  
{A]k%74-a  
/* (non-Javadoc) _YH<YOrMh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #0P!xZ'|{  
*/ ;JOD!|  
public void sort(int[] data) { "H5&3sF2  
int temp; *>e~_{F  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |x d@M-ln  
} |`w$|pm=  
} 09R,'QJ|  
} gf0PMc3l  
AA))KBXq  
} #04{(G|~+E  
"?i>p z  
冒泡排序: 5U0ytDZ2/(  
'"` Lv/  
package org.rut.util.algorithm.support; 968Ac}OA  
4)c+t"h  
import org.rut.util.algorithm.SortUtil; IIq"e~"Vs  
')C|`(hs   
/** LKqRvPnh  
* @author treeroot 4-y6MH  
* @since 2006-2-2 RI (=HzB  
* @version 1.0 7^ B3lC)  
*/ `0yb?Nk `:  
public class BubbleSort implements SortUtil.Sort{ g9DG=\*A  
\HCOR, `T  
/* (non-Javadoc) Ab*] dn`z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]@*tfz\YaH  
*/ GS}0;x  
public void sort(int[] data) { so} l#  
int temp;  ;e&!  
for(int i=0;i for(int j=data.length-1;j>i;j--){ wX-RQ[2X  
if(data[j] SortUtil.swap(data,j,j-1); (JevHdI*V  
} s,84*6u  
} yrO?Np  
} iH[E= 6*  
} +yth_9  
De;,=BSp  
} e@[9C(5E"  
>RM 0=bO  
选择排序:  \C|;F  
w3<Z?lj:  
package org.rut.util.algorithm.support; EtGH\?d~]  
+d=~LQ}*  
import org.rut.util.algorithm.SortUtil; 2[.5oz`  
-<O JqB  
/** )j\r,9<K+5  
* @author treeroot 9#u}^t  
* @since 2006-2-2 ?^U c=  
* @version 1.0 BApa^j\?  
*/ ]X*YAPv  
public class SelectionSort implements SortUtil.Sort { 9^oo-,Su_  
GL/  KB  
/* /a%*u6z@  
* (non-Javadoc) O-Dc[t%  
* #De(*&y2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JdtPY~k0  
*/ -eUV`&[4  
public void sort(int[] data) { NzAQ@E 2d:  
int temp; . /Y&\<  
for (int i = 0; i < data.length; i++) { s}jlS  
int lowIndex = i; 1sD~7KPg?  
for (int j = data.length - 1; j > i; j--) { *h2`^Z  
if (data[j] < data[lowIndex]) { PDhWFF  
lowIndex = j; r9?o$=T  
} n-d:O\]  
} mLJDxh'B  
SortUtil.swap(data,i,lowIndex); $>;a 'f~  
} ?k"0w)8  
} 7 xUE,)?  
3Mw}R6g@#  
} C}9Kx }q  
.U<F6I:<md  
Shell排序: dnix:'D1  
6zuze0ud  
package org.rut.util.algorithm.support; k'x #t(  
(e(Rr 4  
import org.rut.util.algorithm.SortUtil; )R~a;?T_c0  
1f<RyAE?5  
/** cu<y8 :U<  
* @author treeroot O5O.><RP  
* @since 2006-2-2 bCzdszvg3  
* @version 1.0 4X*Q6rW  
*/ Uh*@BmDA  
public class ShellSort implements SortUtil.Sort{ V+46R ]  
`6P?G|'   
/* (non-Javadoc) F, zG;_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _1P`]+K\D$  
*/ )'`CC>Q  
public void sort(int[] data) { |!oXvXU  
for(int i=data.length/2;i>2;i/=2){ lO[E[c G  
for(int j=0;j insertSort(data,j,i); 0#<WOns1   
} uNy!< u  
} %w$ mSG  
insertSort(data,0,1); M"B@M5KT  
} E.9^&E}PG  
e^=NL>V6p  
/** g*F~8+]Y  
* @param data Y!M~#oqio  
* @param j Mo_$b8i  
* @param i bTiBmS  
*/ ZEqE$:  
private void insertSort(int[] data, int start, int inc) { u7[pLtOwN  
int temp; $]1qbE+  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); A0OB$OK  
} )L >Q;'  
} e9lOk)`t  
} hD*(AJ  
&5d\~{;  
} /w0w* n H  
,aWCiu}  
快速排序: T ~h.=5  
QhsVIta  
package org.rut.util.algorithm.support; } YRO'Q{  
hox< vr4  
import org.rut.util.algorithm.SortUtil; j-QGOuvW  
lM$t!2pRB  
/** >%l:Dw\A:  
* @author treeroot oJh"@6u6K  
* @since 2006-2-2 TVYz3~m  
* @version 1.0 e:BDQU  
*/ :s]\k%"  
public class QuickSort implements SortUtil.Sort{ 12-EDg/1  
}Bi@?Sb  
/* (non-Javadoc) B>,A(X&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e+{BJN vz  
*/ lA]N04 d  
public void sort(int[] data) { _CL{IY  
quickSort(data,0,data.length-1); m d_g}N(C  
} me:iQ.g  
private void quickSort(int[] data,int i,int j){ \+9;!VWhl  
int pivotIndex=(i+j)/2; JL``iA  
file://swap l/ QhD?)9  
SortUtil.swap(data,pivotIndex,j); &y\igX1  
(Igu:=  
int k=partition(data,i-1,j,data[j]); #n#HzbT  
SortUtil.swap(data,k,j); >x*)GPDa  
if((k-i)>1) quickSort(data,i,k-1); FllX za)  
if((j-k)>1) quickSort(data,k+1,j); `6}Yqh))  
5#2jq<D  
} #Skj#)I"  
/** p_r4^p\  
* @param data [83>T ,  
* @param i l|7O)  
* @param j ;P8(Zf3wJb  
* @return ~2(]ZfO?>H  
*/ ] );NnsG  
private int partition(int[] data, int l, int r,int pivot) { ^o bC4(  
do{ ; [FLT:$  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 03Ukw/D&  
SortUtil.swap(data,l,r); h\FwgkJP  
} 8O9Gs  
while(l SortUtil.swap(data,l,r); J)Ol"LXV  
return l; >uHb ^  
} {!r#f(?uT  
_ ~[M+IO   
} 1fRP1  
%4/xH 9  
改进后的快速排序: JRo;(wqZ  
Bq;1^gtpe  
package org.rut.util.algorithm.support; x9D/s`!  
d#8e~  
import org.rut.util.algorithm.SortUtil; .:N:pWe  
FB_NkXR  
/** dXK-&Po'  
* @author treeroot @h9K  
* @since 2006-2-2 d>/Tu_ y  
* @version 1.0 TL'0T,Jo  
*/ }/"4|U  
public class ImprovedQuickSort implements SortUtil.Sort { %/!+(7 D  
<]'|$8&jY  
private static int MAX_STACK_SIZE=4096; V)h y0_  
private static int THRESHOLD=10; ~ aA;<#  
/* (non-Javadoc) t#~XLCE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _*n)mlLln  
*/ 7@3sUA_Go  
public void sort(int[] data) { 0qR$J  
int[] stack=new int[MAX_STACK_SIZE]; [8z&-'J=  
cJ/4G l  
int top=-1; Yt*vqm[WV  
int pivot; 4DM*^=9E  
int pivotIndex,l,r; d- kZt@DL=  
OpUA{P  
stack[++top]=0; lQ$+JX;n(y  
stack[++top]=data.length-1; 1$(  
$+jy/:]D  
while(top>0){ g}Mi9Kp  
int j=stack[top--]; !5~k:1=  
int i=stack[top--]; x_W3sS]ej  
}lO }x  
pivotIndex=(i+j)/2; 4 4`WYK l  
pivot=data[pivotIndex]; |]tZ hI"3<  
XWXr0>!,?  
SortUtil.swap(data,pivotIndex,j); I=odMw7Hj  
$L\@da?  
file://partition AqqHD=Yp  
l=i-1; yW`e |!  
r=j; R{`gR"*  
do{ QTE:K?  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); I^:F)a:  
SortUtil.swap(data,l,r); bRsc-Fz6  
} *IqVY&  
while(l SortUtil.swap(data,l,r); }^9paU  
SortUtil.swap(data,l,j); I&\4C.\>  
AK;^9b-}q:  
if((l-i)>THRESHOLD){ y]^#$dK(z  
stack[++top]=i; F|*tNJU>  
stack[++top]=l-1; p&O8qAaO  
} AIv<f9*.:  
if((j-l)>THRESHOLD){ QoseS/  
stack[++top]=l+1; e96#2A5f  
stack[++top]=j; v#F-<?Vv  
} oLw|uU-|  
mw"}8y  
} +4HlRGH  
file://new InsertSort().sort(data); 5us^B8Q  
insertSort(data); Kr]W o8dWy  
} x{?sn  
/** 5{>>,pP&  
* @param data fp tIc#4  
*/ @() {/cF  
private void insertSort(int[] data) { KC]tY9 FK  
int temp; H0+:XF\M  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); q0g1E Jar  
} eo ?Oir)  
} B/G3T u uG  
} <p/MyqZf  
M?R!n$N_  
} J^h'9iQpi  
vnZ4(  
归并排序: |(&oI(l5K  
Vmtzig3w[  
package org.rut.util.algorithm.support; 506V0]`/  
F1J#Y$q~L  
import org.rut.util.algorithm.SortUtil; IX.sy  
V]m^7^m3  
/** j-6v2MH  
* @author treeroot 82s 5VQ6  
* @since 2006-2-2 pl?kS8#U?  
* @version 1.0 k,lqT>C  
*/ l#ZyB|  
public class MergeSort implements SortUtil.Sort{ %p*`h43;  
iJ4 <f->t  
/* (non-Javadoc) %Co b(C&}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kfRJ\"`   
*/ /3F<=zikO  
public void sort(int[] data) { z'*ml ?  
int[] temp=new int[data.length]; zhjJ>d%w  
mergeSort(data,temp,0,data.length-1); D$$3fN.iEL  
} PLdf_/]-   
.aJ%am/:%  
private void mergeSort(int[] data,int[] temp,int l,int r){ 7j T#BWt  
int mid=(l+r)/2; E[ 0Sst x  
if(l==r) return ; _jo$)x+'x  
mergeSort(data,temp,l,mid); oSmjs  
mergeSort(data,temp,mid+1,r); <"A#Eok|4  
for(int i=l;i<=r;i++){ wx./"m.M  
temp=data; #w;;D7{@m  
} Vf$1Sjw  
int i1=l; oc:x&`j  
int i2=mid+1; $ hoYkA  
for(int cur=l;cur<=r;cur++){ hg4J2m  
if(i1==mid+1) V_lGj  
data[cur]=temp[i2++]; cCk1'D|X[e  
else if(i2>r) pagC(F  
data[cur]=temp[i1++]; 8:<1|]]  
else if(temp[i1] data[cur]=temp[i1++]; jzQ I>u  
else ;AltNGcM  
data[cur]=temp[i2++]; [NjajA~z>F  
} WkP|4&-<  
} \QiqcD9Y  
_Qg{ ;  
} aoK4Du{  
Txu>/1N,  
改进后的归并排序: `BpCRKTG  
RW)k_#%=  
package org.rut.util.algorithm.support; jOtzx"/)rE  
%uW<  
import org.rut.util.algorithm.SortUtil; R@&?i=gk  
}-dF+m:  
/** v|>BDN@,6  
* @author treeroot B]i+,u  
* @since 2006-2-2 "(N-h\7Ex9  
* @version 1.0 D"'#one  
*/ Rn8#0%/Q  
public class ImprovedMergeSort implements SortUtil.Sort { ^>eFm8`N  
Nl=+.d6 Qo  
private static final int THRESHOLD = 10; jWhD5k@v  
yG4MUf6  
/* F; 0Dp  
* (non-Javadoc) #|q;t   
* ,rXW`7!2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bu;vpNa  
*/ |NXFla  
public void sort(int[] data) { ypxC1E  
int[] temp=new int[data.length]; S;BP`g<l=  
mergeSort(data,temp,0,data.length-1); IG>>j}  
} ^T=5zqRD  
gl Li  
private void mergeSort(int[] data, int[] temp, int l, int r) { f&f[La  
int i, j, k; wH#Lb@cfZ0  
int mid = (l + r) / 2; |O2|`"7  
if (l == r) 31H|?cg<  
return; Qve`k<Cj"  
if ((mid - l) >= THRESHOLD) K:C+/O  
mergeSort(data, temp, l, mid); b\H/-7<  
else E#m76]vkCU  
insertSort(data, l, mid - l + 1); L{zamVQG  
if ((r - mid) > THRESHOLD) omr:C8T>  
mergeSort(data, temp, mid + 1, r); h@ EJTAi  
else <x^IwS  
insertSort(data, mid + 1, r - mid); p {w}  
N{|[R   
for (i = l; i <= mid; i++) { g\E ._ab<  
temp = data; v!iWzN  
} ^j1Gmv)  
for (j = 1; j <= r - mid; j++) { )_WH#-}  
temp[r - j + 1] = data[j + mid]; sY&r bJ(P  
} Idt@Hk5<&  
int a = temp[l]; zv>ZrFl*  
int b = temp[r]; Z5 w`-#  
for (i = l, j = r, k = l; k <= r; k++) { zp}yiE!bl  
if (a < b) { [sjrb?Xd  
data[k] = temp[i++]; oVAOGHE  
a = temp; A7mMgb_  
} else { !Mm+bWn=mB  
data[k] = temp[j--]; l^)o'YS y  
b = temp[j]; HdDo&#  
} !N@Yh"c  
} Z8N@e<!*~8  
} lrM.RM96  
$eTv6B?m  
/** h4B+0  
* @param data <#:Ebofsn  
* @param l _Jt_2o%G  
* @param i ]KfghRUH  
*/ A632 :V  
private void insertSort(int[] data, int start, int len) { &:IfhS  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); `@W3sW/^  
} }S1Z>ZA5  
} O(b"F? w  
} KBp!zSl  
} ufHuI*  
e-YGuWGN7  
堆排序: N4[ B:n  
ayB=|*Q"  
package org.rut.util.algorithm.support; _:/Cl9~  
\3J+OY  
import org.rut.util.algorithm.SortUtil; g6tWU  
f]O5V$!RuE  
/** Te{aB"B  
* @author treeroot ^R&_}bp  
* @since 2006-2-2 <T4 7kLI  
* @version 1.0 :..E:HdYO  
*/ ljaAB+  
public class HeapSort implements SortUtil.Sort{ UtHmM,*I  
AIIBd  
/* (non-Javadoc) "H/2r]?GT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D~[ N_  
*/ )eIz{Mdp=  
public void sort(int[] data) { eWqVh[  
MaxHeap h=new MaxHeap(); BVwRPt  
h.init(data); Fj4l %=  
for(int i=0;i h.remove(); 9P,A t8V(  
System.arraycopy(h.queue,1,data,0,data.length); oRtY?6^$  
} bqf]$}/8k  
%tklup]LF8  
private static class MaxHeap{ dK-  ^  
:~qtvs;{  
void init(int[] data){  Y,<WX v  
this.queue=new int[data.length+1]; f D]An<  
for(int i=0;i queue[++size]=data; i75?*ld  
fixUp(size); `"^@[1  
} =PeW$q+  
} N7Z(lI|a;  
.j+2x[`l  
private int size=0; Huug_E+  
9/8@  
private int[] queue; [5}cU{M  
wd2P/y42;;  
public int get() { W? 6  
return queue[1]; <Bob#Tf ~  
} .3g\[p   
GSUOMy[M-  
public void remove() { VLwJ6?.f'  
SortUtil.swap(queue,1,size--); ~I8"l@H>  
fixDown(1); ~]i]kU   
} iYmzk?U  
file://fixdown V}Y~z)i0  
private void fixDown(int k) { qx#ghcU  
int j; lhW#IiX  
while ((j = k << 1) <= size) { R+@sHsZ@  
if (j < size %26amp;%26amp; queue[j] j++; qU /Wg  
if (queue[k]>queue[j]) file://不用交换 O #p)~V8~  
break; i&SBW0)  
SortUtil.swap(queue,j,k); JXZ:Wg  
k = j; Cx1Sh#9  
} z!t3xFN&/  
} J T0,Z  
private void fixUp(int k) { 4p/V6kr&r  
while (k > 1) { t0AqGrn  
int j = k >> 1; $HR(|{piZ  
if (queue[j]>queue[k]) (0+GLI8  
break; OA8b_k~  
SortUtil.swap(queue,j,k); F~uA-g  
k = j; %l]rQjV-  
} `)gkkZ$)j  
} W0r5D9k  
n<"a+TTU  
} ! A ydhe  
5e~{7{  
} #/ gme  
MIMPJXT#.  
SortUtil: V }r_   
UU:QK{{E  
package org.rut.util.algorithm; 0I ND9h. %  
-$!Pf$l@  
import org.rut.util.algorithm.support.BubbleSort; Af! W K=  
import org.rut.util.algorithm.support.HeapSort; 7+2aG  
import org.rut.util.algorithm.support.ImprovedMergeSort; bQ:3G;  
import org.rut.util.algorithm.support.ImprovedQuickSort; R~seUW7uv"  
import org.rut.util.algorithm.support.InsertSort; 1PT_1[eAR  
import org.rut.util.algorithm.support.MergeSort; A?{aUQB~|  
import org.rut.util.algorithm.support.QuickSort; t9-\x  
import org.rut.util.algorithm.support.SelectionSort; q_m#BE;t  
import org.rut.util.algorithm.support.ShellSort; WTy8N  
e[VJ0 A=  
/** nH3b<k;S  
* @author treeroot 0 S`b;f  
* @since 2006-2-2 oT5rX ,8  
* @version 1.0 JXa%TpI: E  
*/ N6 }i>";_;  
public class SortUtil { kI1{>vYD  
public final static int INSERT = 1; vG Lb2Q  
public final static int BUBBLE = 2; %~v76;H<  
public final static int SELECTION = 3; bMK'J  
public final static int SHELL = 4; MdTd$ 4J3  
public final static int QUICK = 5; )*QTxN  
public final static int IMPROVED_QUICK = 6;  "lnk  
public final static int MERGE = 7; + 1%^c(3  
public final static int IMPROVED_MERGE = 8; 9[]"%6  
public final static int HEAP = 9; gQzJ2LU(  
0_xcrM  
public static void sort(int[] data) { bU +eJU_%  
sort(data, IMPROVED_QUICK); J;]@?(  
} pQm!Bt L  
private static String[] name={ ]C:Ifh~  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 0R!}}*Ee>q  
}; gu%'M:Xe  
`?S?)0B  
private static Sort[] impl=new Sort[]{ 4>tYMyLt0  
new InsertSort(), fm2Mi~}0  
new BubbleSort(), :aFpz6<  
new SelectionSort(), p-03V"^&  
new ShellSort(), bJMcI8`  
new QuickSort(), z(#hL-{c  
new ImprovedQuickSort(), 9,a,A6xry  
new MergeSort(), 3b/vyZF  
new ImprovedMergeSort(), DDCQAf  
new HeapSort() @IKe<{w  
}; 8LM1oal}  
C5n=2luI_  
public static String toString(int algorithm){ kAF}*&Kzd~  
return name[algorithm-1]; arH\QPaka'  
} J,M5<s[Xqt  
oP`M\KXau  
public static void sort(int[] data, int algorithm) { N %/DN  
impl[algorithm-1].sort(data); V$F.`O!hfi  
} *gpD4c7A\  
,ce^"yG  
public static interface Sort { MldL"*HW:  
public void sort(int[] data); pxnUe1=  
} 7;-i_&vws  
qN,FX#DP  
public static void swap(int[] data, int i, int j) { u4^"E+y^S  
int temp = data; 8}E(UsTa  
data = data[j]; (c|qX-%rC  
data[j] = temp; O)Dw<j)  
} $U.'K!B  
} /Gv$1t^a  
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