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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。 wb]%m1H`:  
插入排序: 5* j?E  
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package org.rut.util.algorithm.support; 3Ndq>  
Sm)Ha:[4  
import org.rut.util.algorithm.SortUtil; v'U{/ ,x  
/** + ,%&e  
* @author treeroot 419x+3>}  
* @since 2006-2-2 !F1M(zFD  
* @version 1.0 ukIQr/k  
*/ >OL3H$F  
public class InsertSort implements SortUtil.Sort{ ;1:Js0=;H  
aNScF  
/* (non-Javadoc) Rtb7|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?\vh9  
*/ N!ls j \-  
public void sort(int[] data) { (MR_^t  
int temp; '_GrD>P)-  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); H| 8Qp*  
} tZ'|DCT  
}  Q?nN!e T  
} |_] Q$q[[%  
xCg52zkH#  
} ]!I7Y.w6  
d/ARm-D  
冒泡排序: 2>cGH7EBD  
M[mF8Zf  
package org.rut.util.algorithm.support; Jll-`b 1  
J&M o%"[)  
import org.rut.util.algorithm.SortUtil; F$ #U5}Q  
I(V!Mv8j  
/** X;i~ <Tq  
* @author treeroot <J`0mVOX  
* @since 2006-2-2 *pSQU=dmS  
* @version 1.0 JBXrFC;  
*/ ;nodjbr,j  
public class BubbleSort implements SortUtil.Sort{ ;5zz<;Zy  
Ove<mFI\  
/* (non-Javadoc) znxnL,-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YE|SKx@  
*/ vgsJeV`}I  
public void sort(int[] data) { D)j(,vt  
int temp; }% `.h"  
for(int i=0;i for(int j=data.length-1;j>i;j--){ $6mX  
if(data[j] SortUtil.swap(data,j,j-1); 4kBaB  
} YL]Z<%aKt  
} P{wF"vf  
} X $ s:>[H  
} *h'=3w:G  
aMtsmL?=  
} M_"L9^^>N  
hWD;jR  
选择排序: U*22h` S  
rEB @$C^  
package org.rut.util.algorithm.support; LIcM3_.  
'}fzX2Q#  
import org.rut.util.algorithm.SortUtil; a0D%k:k5  
syaPpM Q-  
/** =<?+#-;p  
* @author treeroot A-ZN F4  
* @since 2006-2-2 U<DZ:ds ?T  
* @version 1.0 - `p4-J!Fy  
*/ gk"$,\DI  
public class SelectionSort implements SortUtil.Sort { czS+< w  
m 8aITd8  
/* `< xn8h9p  
* (non-Javadoc) L)@?e?9  
* <Bw^!.jAF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1Cv-  
*/ C -\S/yd  
public void sort(int[] data) { 6]W=nAD  
int temp; %M7` Hwu  
for (int i = 0; i < data.length; i++) { 7?GIS '  
int lowIndex = i; 59"UL\3  
for (int j = data.length - 1; j > i; j--) { EfCx`3~EX  
if (data[j] < data[lowIndex]) { ;[=8B \?  
lowIndex = j; #a'Ex=%rM  
} YoBPLS`K  
} kXi6lh  
SortUtil.swap(data,i,lowIndex); $5ak_@AC  
} apg=-^L'  
} , udTvI  
0n;< ge&~R  
} 1~Oe=`{&  
I %sFqh>  
Shell排序: +l9!Fl{MK\  
eU".3`CtY  
package org.rut.util.algorithm.support; BG6B :  
]:Ns f|C0  
import org.rut.util.algorithm.SortUtil; gMWjk7  
@+Si?8\  
/** Ye2 {f"F  
* @author treeroot /s@oZ{h  
* @since 2006-2-2 zgNc4B  
* @version 1.0 xv(9IEjt0  
*/ "B3N* R(["  
public class ShellSort implements SortUtil.Sort{ 5,_u/5Y4  
m1B+31'>^  
/* (non-Javadoc) S- pV_Ff  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o0ifp=V y  
*/ W6?pswQ  
public void sort(int[] data) { ="Ho%*@6  
for(int i=data.length/2;i>2;i/=2){ Z>)Bp /-  
for(int j=0;j insertSort(data,j,i); gW>uR3Ca4  
} 9N@W\DT  
} 8$6Y{$&C  
insertSort(data,0,1); /{+y2.{j  
} i~I%D%;  
7"sD5N/>uh  
/** !W5 (  
* @param data Si8pzd  
* @param j ,]46I.]  
* @param i ABQ('#78  
*/ Al}6q{E9+8  
private void insertSort(int[] data, int start, int inc) { L^}_~PO N5  
int temp; U>]$a71  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); &dM. d!  
} TW)c#P43K  
} kW;+|qs^  
} ii T"5`KY  
% tS,}ze  
} j[`j9mM8  
63\/ * NNB  
快速排序: `uOT+B%R  
d,+Hd2o^X  
package org.rut.util.algorithm.support; ]^h]t~  
,:%CB"J  
import org.rut.util.algorithm.SortUtil; U{2BVqM  
[@VP?74  
/** 1oR7iD^  
* @author treeroot 9IjIIM2y  
* @since 2006-2-2 eD,.~Y#?=  
* @version 1.0 wPQH(~k:  
*/ EMY/~bQW  
public class QuickSort implements SortUtil.Sort{ o_XflzC  
kVkU)hqR  
/* (non-Javadoc) 6a[}'/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a zCf  
*/ ;rF\kX&Jh  
public void sort(int[] data) { :ci5r;^  
quickSort(data,0,data.length-1); T1ut"Zu  
} VEWi_;=J1  
private void quickSort(int[] data,int i,int j){ <^&ehy:7y  
int pivotIndex=(i+j)/2; #eoome2Q  
file://swap J?V?R  
SortUtil.swap(data,pivotIndex,j); qX/y5F`  
e%svrJ2   
int k=partition(data,i-1,j,data[j]); " un]Gc   
SortUtil.swap(data,k,j); YN/|$sMD|  
if((k-i)>1) quickSort(data,i,k-1); gqZ'$7So  
if((j-k)>1) quickSort(data,k+1,j); 6Y^23W F  
_GV:HOBi  
} 9Vg?{v!yn  
/** 8m-U){r!U^  
* @param data F}F&T  
* @param i ,BH@j%Jmy  
* @param j .!Oo|m`V@  
* @return P@Hs`=  
*/ '.on)Zd.  
private int partition(int[] data, int l, int r,int pivot) { pV9IHs}  
do{ y^;#&k!  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); o*b] p-  
SortUtil.swap(data,l,r); N@2dA*T,  
} ap.K=-H  
while(l SortUtil.swap(data,l,r); IoxgjUa  
return l; bn#"?6Z2  
} 0pK=o"^?@  
L9r8BK;  
} RmI]1S_=  
.I7pA5V{#  
改进后的快速排序: A#K14Ayr  
C;;Sih5  
package org.rut.util.algorithm.support; VyXKZ%\dQ/  
(]Z_UTT  
import org.rut.util.algorithm.SortUtil; @D.}\(  
)SaGH3~*C  
/** !`k1:@NZ  
* @author treeroot 5-|:^hU9  
* @since 2006-2-2 ],>@";9u"  
* @version 1.0 o15-ZzE-  
*/ FTX=Wyr  
public class ImprovedQuickSort implements SortUtil.Sort { u#Pa7_zBj]  
cbNTj$'b2u  
private static int MAX_STACK_SIZE=4096; \MsTB|Z  
private static int THRESHOLD=10; ({ 8-*  
/* (non-Javadoc) "An,Q82oHf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z)e/ !~""]  
*/ +M./@U*g  
public void sort(int[] data) { Y#]+Tm (+  
int[] stack=new int[MAX_STACK_SIZE]; Mz9 r5  
18)'c?^.  
int top=-1; /1Qr#OJ(]  
int pivot; qt"G[9;  
int pivotIndex,l,r; F<ZYh  
.sxcCrQE  
stack[++top]=0; AhCW'.  
stack[++top]=data.length-1; :I"2V  
xj<Rp|7&  
while(top>0){ QMA%$  
int j=stack[top--]; !lREaSM  
int i=stack[top--]; Htay-PB }  
wa(8Hl|Y  
pivotIndex=(i+j)/2; aFc1|.Nm  
pivot=data[pivotIndex]; rR$h*  
&LmJ!^#  
SortUtil.swap(data,pivotIndex,j); V("{)0~O  
QsGiclU  
file://partition 8&;UO{  
l=i-1; Bt[/0>i  
r=j; `Y+J-EQ  
do{ t#yk ->,  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); $[9%QQk5<L  
SortUtil.swap(data,l,r); hMzs*gK  
} ,ZKr .`B  
while(l SortUtil.swap(data,l,r); 3ovWwZ8&  
SortUtil.swap(data,l,j); ylUrLQ\  
V@\gS"Tu  
if((l-i)>THRESHOLD){ &d9{k5/+\  
stack[++top]=i; lackB2J9 A  
stack[++top]=l-1; 9Q -HeXvR  
} Om\o#{D  
if((j-l)>THRESHOLD){ ,c$,!.r  
stack[++top]=l+1; jy7\+i  
stack[++top]=j; /xG*,YL/q  
} 2^XGGB0  
ioa U*%  
} "lQ*1.i  
file://new InsertSort().sort(data); .\ K_@M  
insertSort(data); M])ZK  
} r}Ohkr  
/** 6~OoFm5  
* @param data _t:$XJ`bTk  
*/ yZd +^QN  
private void insertSort(int[] data) { J2d.f}-  
int temp; 5NBV[EP  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); d[r#-h> dS  
} nvca."5y  
} ,"2s`YC  
} 2Fy>.*,?  
-\+s#kE:  
} %mL-$*  
})uGRvz  
归并排序: %lL.[8r|  
tM2)k+fg  
package org.rut.util.algorithm.support; tzZ63@cm  
3WN`y8l  
import org.rut.util.algorithm.SortUtil; _a_7,bk5  
4B=2>k  
/** h a|C&G  
* @author treeroot -8'C\R|J+  
* @since 2006-2-2 U0=]  
* @version 1.0 >oea{u  
*/ "~`I::'c  
public class MergeSort implements SortUtil.Sort{ Xf0M:\w=M  
c?P?yIz6p  
/* (non-Javadoc) pa#d L!J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 33jovK 2  
*/ L}GC<D:  
public void sort(int[] data) { ~SQ?BoCI[  
int[] temp=new int[data.length]; Rfn9s(m  
mergeSort(data,temp,0,data.length-1); >tTj[cMJl  
} Tskq)NU  
lW<PoT  
private void mergeSort(int[] data,int[] temp,int l,int r){ X_qf"|i  
int mid=(l+r)/2; A3vUPWdDk  
if(l==r) return ; ~jK{ ,$:=  
mergeSort(data,temp,l,mid); Mmj;'iYOwF  
mergeSort(data,temp,mid+1,r); wpN k+;  
for(int i=l;i<=r;i++){  ~UyV<  
temp=data; y+!+ D[x  
} J%V-Q>L  
int i1=l; :*t"8;O[  
int i2=mid+1; yvgrIdEP  
for(int cur=l;cur<=r;cur++){ ,\X@~ j  
if(i1==mid+1) '#LQN<"4  
data[cur]=temp[i2++]; lAzj N~V  
else if(i2>r) uqM yoIc  
data[cur]=temp[i1++]; qud\K+  
else if(temp[i1] data[cur]=temp[i1++]; 2LNRtW*  
else FvN<<&B  
data[cur]=temp[i2++]; I96C i2)m  
} _8Z_`@0  
} %Rz&lh/  
` L >  
} S5KEXnjm  
:gerQz4R8  
改进后的归并排序: 6 }4'E  
0ge$ p,  
package org.rut.util.algorithm.support; Dw=gs{8D  
?|WoIV.  
import org.rut.util.algorithm.SortUtil; 4Y,R-+f  
+zrAG 24q  
/** zS\E/.X2  
* @author treeroot 9Q(+ZG=JkV  
* @since 2006-2-2 8 %%f%y  
* @version 1.0 Q?8R[i  
*/ umF Z?a  
public class ImprovedMergeSort implements SortUtil.Sort { NM]s8cK_  
af#pR&4}   
private static final int THRESHOLD = 10; O=v#{ [  
!lxTX  
/* KBXK0zWh7  
* (non-Javadoc) B.g[c97  
* cCo`~7rE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AX?fuDLs  
*/ p/JL9@:'  
public void sort(int[] data) { U7!.,kR-  
int[] temp=new int[data.length]; _<=S_ <$2  
mergeSort(data,temp,0,data.length-1); }"|"Q7H  
} d)@<W1;  
1z&Ly3  
private void mergeSort(int[] data, int[] temp, int l, int r) { Ubh{!Y  
int i, j, k; N;A@' tu8  
int mid = (l + r) / 2; GwG4LIp  
if (l == r) ,ldI2 ]  
return; ndjx|s)E  
if ((mid - l) >= THRESHOLD) lc2i`MC  
mergeSort(data, temp, l, mid); :C}2=  
else MZTx:EN!  
insertSort(data, l, mid - l + 1); )I^2k4Cg"  
if ((r - mid) > THRESHOLD) |J+(:{ }~  
mergeSort(data, temp, mid + 1, r); !).}u,*'no  
else 'mH) d  
insertSort(data, mid + 1, r - mid); :Xn7Ha[f  
cTXri8K_  
for (i = l; i <= mid; i++) { Rw6; Z  
temp = data; &?uz`pv2  
}  *[r!  
for (j = 1; j <= r - mid; j++) { 9Ro6fjjE  
temp[r - j + 1] = data[j + mid]; eVt$7d?Jw  
} wO:Sg=,  
int a = temp[l]; Vs)--t  
int b = temp[r]; @WQK>-=(3  
for (i = l, j = r, k = l; k <= r; k++) { Vo9F  
if (a < b) { Ti2Ls5H}  
data[k] = temp[i++]; rwniOQe  
a = temp; 5GA\xM-  
} else { l" q1?kaVg  
data[k] = temp[j--]; 277ASCWLkU  
b = temp[j]; HxB m~Lcqy  
} :d0Y%vl  
} !" JfOu  
} 6vp *9  
KJ?y@Q  
/** Fhv2V,nZ<  
* @param data j}BHj.YuP  
* @param l :qR=>n=  
* @param i v}sY|p"  
*/ Gy,u^lkk:  
private void insertSort(int[] data, int start, int len) { ( =16PYs  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); )jCo%P/  
} 0l=+$& D  
} O<j PGU  
} x$wd O  
} fa&-. *  
K7e4_ZGI  
堆排序: Uu"0rUzt  
ZUp\Ep}  
package org.rut.util.algorithm.support; 7l."b$U4yv  
.c^ ggy%  
import org.rut.util.algorithm.SortUtil; >sD4R}\})  
~gI{\iNF/  
/** W%e_~$H0  
* @author treeroot x1gx$P  
* @since 2006-2-2 b?Pj< tA  
* @version 1.0 P F`rWw  
*/ QC0!p"  
public class HeapSort implements SortUtil.Sort{ 8L5!T6+D&  
~:lKS;PRuK  
/* (non-Javadoc) IN7<@OS7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fd8!KO  
*/ /%n`V  
public void sort(int[] data) { J^m<*  
MaxHeap h=new MaxHeap(); 9 L?;FY)_  
h.init(data); !umEyd@ "  
for(int i=0;i h.remove();  T7$S_  
System.arraycopy(h.queue,1,data,0,data.length); G",.,Px  
} .wK1El{bf  
Ybg- "w  
private static class MaxHeap{ DlyMJ#a  
O'NW Ebl/  
void init(int[] data){ E-ZRG!)[v  
this.queue=new int[data.length+1]; Vv*NFJ|  
for(int i=0;i queue[++size]=data; % *z-PT22  
fixUp(size); Uh|>Skic4  
} 9.M{M06;  
} kII7z;<^`  
F6S~$<  
private int size=0; X1A<$Am1  
TSL9ax4j  
private int[] queue; {UH9i'y:t  
h<p3'  
public int get() { 9 1P4:6  
return queue[1]; BH@b1}  
} ivrXwZ7jT  
; !$m1  
public void remove() { FA>1x*;c  
SortUtil.swap(queue,1,size--); Erb Sl  
fixDown(1); ~U}Mv{ y  
} X QbNH~  
file://fixdown aW{L7N%  
private void fixDown(int k) {  s&*yk p  
int j; \&A+s4c")  
while ((j = k << 1) <= size) { }X$l\pm  
if (j < size %26amp;%26amp; queue[j] j++; rhY_|bi4P  
if (queue[k]>queue[j]) file://不用交换 zTCP )x  
break; 0^_MN~s(X  
SortUtil.swap(queue,j,k); 'M'w,sID  
k = j; R Td^ImV  
} 73DlRt *  
} aIvBY78o  
private void fixUp(int k) { 2eok@1  
while (k > 1) { rS~qi}4X  
int j = k >> 1; Qp:6= o0:  
if (queue[j]>queue[k]) p$!@I  
break; Uh6mGL z*&  
SortUtil.swap(queue,j,k); QjukK6#W  
k = j; Ao`_",E  
} Xt(! a  
} P"4Mm, C  
b!~TAT&8  
} k\(4sY M  
O@`J_9  
} G:Hj;&'2  
+G!v!(Ob+  
SortUtil: nGZ \<-  
u 2lX d'  
package org.rut.util.algorithm; z<QIuq  
A#:8X1w  
import org.rut.util.algorithm.support.BubbleSort; u[`v&e  
import org.rut.util.algorithm.support.HeapSort; ??TdrTS  
import org.rut.util.algorithm.support.ImprovedMergeSort; RV]a%mVlM  
import org.rut.util.algorithm.support.ImprovedQuickSort; Gm@iV,F%R  
import org.rut.util.algorithm.support.InsertSort;  wF;B@  
import org.rut.util.algorithm.support.MergeSort; B007x{-L  
import org.rut.util.algorithm.support.QuickSort; ~|=rwDBZ8l  
import org.rut.util.algorithm.support.SelectionSort; ]S]"`;Wh  
import org.rut.util.algorithm.support.ShellSort; ;E2kT GT  
K50t%yu#T]  
/** El1:?4;  
* @author treeroot '^lUL) R  
* @since 2006-2-2 s;>VeD)*)  
* @version 1.0 w&+\Wo;([b  
*/ ;E2~L  
public class SortUtil { JB'qiuhab  
public final static int INSERT = 1; 9C1b^^Kb  
public final static int BUBBLE = 2; bQ=s8'  
public final static int SELECTION = 3; 4d6% t2  
public final static int SHELL = 4; 67ZYtA|t  
public final static int QUICK = 5; %d-`71|lG^  
public final static int IMPROVED_QUICK = 6; >~>{;Wq(p+  
public final static int MERGE = 7; L+(C5L93}  
public final static int IMPROVED_MERGE = 8; 1[[TB .xF  
public final static int HEAP = 9; iZu:uMoc  
X#Ak'%J  
public static void sort(int[] data) { I<9n(rA  
sort(data, IMPROVED_QUICK); H&u4v2  
} e7hO;=?b'  
private static String[] name={ 0JrK/Ma3  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ?bn;{c;E  
}; 8t--#sDy{0  
[ArO$X3\  
private static Sort[] impl=new Sort[]{ bA0uGLc  
new InsertSort(), s|BX> 1  
new BubbleSort(), f^ywW[dF  
new SelectionSort(), AE]i V{p  
new ShellSort(), Qlf 9]ug)  
new QuickSort(), PGMv(}%;  
new ImprovedQuickSort(), Sn+FV+D  
new MergeSort(), olHH9R9:  
new ImprovedMergeSort(), rSzQUn<  
new HeapSort() 5_PWGaQa  
}; {rtM%%l  
;!^ +N  
public static String toString(int algorithm){ Gmqs`{tc  
return name[algorithm-1]; ^#}dPGm  
} (q~R5)D  
JgxE|#*7U  
public static void sort(int[] data, int algorithm) { ^! $} BY  
impl[algorithm-1].sort(data); >~.Zr3P6kC  
} Kp$_0  
|R[v@c`pn  
public static interface Sort { 9*7Hoi4Ji  
public void sort(int[] data); 9"[!EKW  
} FLi(#9  
>cBGw'S  
public static void swap(int[] data, int i, int j) { k, $I59  
int temp = data; oqm  
data = data[j]; 03P N{<  
data[j] = temp; M@',3  
} HGU?bJ~6o  
} BUcaj.S  
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