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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。 -s5>GwZt  
插入排序: Of?3|I3 l  
sQ05wAv  
package org.rut.util.algorithm.support; A!bH0=<I  
&E+2  
import org.rut.util.algorithm.SortUtil; pGHn   
/** L32[IL|  
* @author treeroot ?]In@h-  
* @since 2006-2-2 3H_%2V6#V1  
* @version 1.0 |on$ )vm  
*/ [/'=M h  
public class InsertSort implements SortUtil.Sort{ WPXLN'w+  
l+n0=^ Z  
/* (non-Javadoc) /tqQAvj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p*l]I *x'<  
*/ =T3O;i  
public void sort(int[] data) { p+7ZGB  
int temp; @9ndr$t  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); uu`G<n  
} oD?c]}3  
} UX!)\5-  
} zmdu\:_X9  
cE SSSH!m  
} _a[)hu8q.  
oe,37xa4  
冒泡排序: [:xpz,  
ZBcT@hxm  
package org.rut.util.algorithm.support; >?yxig:_  
8*\PWl  
import org.rut.util.algorithm.SortUtil; E6njm du  
%*Aq%,.={  
/** +GDT@,/  
* @author treeroot l2 [{T^  
* @since 2006-2-2 (Ymj  
* @version 1.0 ~P5;k_&  
*/ aNxq_pRb  
public class BubbleSort implements SortUtil.Sort{ tJgo% P1  
@Q#<-/  
/* (non-Javadoc) \&#pJBBG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3<vw#]yL  
*/ ~SD8#;v2  
public void sort(int[] data) { w>6~ zAh  
int temp; g2t'u4>  
for(int i=0;i for(int j=data.length-1;j>i;j--){ +\@}IKWl-?  
if(data[j] SortUtil.swap(data,j,j-1); U) B^R  
} :^92B?q  
} HAOl&\)7"_  
} v==]v2 -  
} S{.G=O  
u U;]/  
} +,$ SZO]  
D1g .Fek5  
选择排序: Kk2PWJ7  
R07Kure  
package org.rut.util.algorithm.support; w/r wE  
U2=l; R{  
import org.rut.util.algorithm.SortUtil; ]/!#:  
jX^uNmb  
/** 8kQ >M  
* @author treeroot UY*3b<F}  
* @since 2006-2-2  k%V#{t.  
* @version 1.0 Z~^)B8  
*/ .g.v  
public class SelectionSort implements SortUtil.Sort { kP9DCDO`[5  
.P\wE";  
/* dxkq*  
* (non-Javadoc) `}gjfu -'\  
* vn@9Sqk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cq`v8  
*/ B&&:A4  
public void sort(int[] data) { w66iLQ\@  
int temp; @b\/\\{  
for (int i = 0; i < data.length; i++) { $:V'+s4o  
int lowIndex = i; ^)Xl7d|m+  
for (int j = data.length - 1; j > i; j--) { ~:r:?PwWG  
if (data[j] < data[lowIndex]) { OD !b*Iy|  
lowIndex = j; 4y&%YLMpl  
} !T/ ^zc;G  
} 6q ._8%  
SortUtil.swap(data,i,lowIndex); ${^WM}N  
} w-l:* EV8  
} yTWP1  
c%_I|h<?iT  
} UD`bK a`E  
RiC1lCE  
Shell排序: g+oSbC  
4S>A}rWz  
package org.rut.util.algorithm.support; {)]5o| Hx  
GGcN aW'  
import org.rut.util.algorithm.SortUtil; 8%]o6'd4  
h.@5vhD  
/** (j;s6g0  
* @author treeroot L.XGD|m  
* @since 2006-2-2 x 5vvY  
* @version 1.0 6p%;:mDB  
*/ p`lv$ @q'  
public class ShellSort implements SortUtil.Sort{ 5y;texsj[  
-@{5 u d  
/* (non-Javadoc) I!?-lI@(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UU')V  
*/ aMQfg51W:  
public void sort(int[] data) { t<5 $85Y~  
for(int i=data.length/2;i>2;i/=2){ hnag <=  
for(int j=0;j insertSort(data,j,i); LY b@0O<w  
} ~;nh|v/e  
} 45e-A{G~  
insertSort(data,0,1); n46H7e(ej\  
} ]ovP^]]V  
?|LR@M!S7  
/** 4{JoeIRyz  
* @param data :/ ,h)h)|  
* @param j zKB$n.H  
* @param i 2TB>d+  
*/ ssGp:{]v/  
private void insertSort(int[] data, int start, int inc) { $d 2mcwh\  
int temp; 1+|s   
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc);  }t}y  
}  nen(  
} +6tj w 6  
} $'FPsoH  
Y=+pz^/"  
} UfcQFT{()  
+~b@W{  
快速排序: y/57 >.3  
I;xrw?=\L  
package org.rut.util.algorithm.support; H&`0I$8m  
LUSBRr8  
import org.rut.util.algorithm.SortUtil; k I  
#!="b8F  
/** ]t$wK  
* @author treeroot r:fMd3;gq  
* @since 2006-2-2 BEWDTOY[  
* @version 1.0 gXZl3  
*/ m{T:<:q~  
public class QuickSort implements SortUtil.Sort{ ,MH/lQq%  
JmL{&  
/* (non-Javadoc) *HiN:30DZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wq$+m (  
*/ -I dW-9~9  
public void sort(int[] data) { Gf``0F)  
quickSort(data,0,data.length-1); '/l<\b/E  
} zf+jQ  
private void quickSort(int[] data,int i,int j){ 4#?Sxs  
int pivotIndex=(i+j)/2; MYyV{W*T>  
file://swap % NSb8@  
SortUtil.swap(data,pivotIndex,j); <y4hK3wP  
MvV\?Lzj   
int k=partition(data,i-1,j,data[j]); _Q XC5i  
SortUtil.swap(data,k,j); FI|jsO 3  
if((k-i)>1) quickSort(data,i,k-1); cQM_kV??!  
if((j-k)>1) quickSort(data,k+1,j); h`Ld%iN\  
gEr@L  
} BMaw]D  
/** Eod'Esye5  
* @param data _Sa7+d(  
* @param i +9EG6"..@H  
* @param j aY:u-1  
* @return 5dwC~vn}c  
*/ hO8~Rg   
private int partition(int[] data, int l, int r,int pivot) { hb@,fgo!Q  
do{ q|N,?f9  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); tZ|0wPp  
SortUtil.swap(data,l,r); )wT @`p"4  
} n{'LF #4l  
while(l SortUtil.swap(data,l,r); vH14%&OcN  
return l; >#pZ`oPEAv  
} FYe#x]ue  
P _e9>t@  
} >+}yI}W;e  
Tfsx&k\  
改进后的快速排序: Lt'FA  
+UvT;"  
package org.rut.util.algorithm.support; /:S&1'=  
2Kg-ZDK8  
import org.rut.util.algorithm.SortUtil; s>pM+PoGYd  
^HiI   
/** y}aKL(AaU  
* @author treeroot |azdFf6A:[  
* @since 2006-2-2 C?OqS+  
* @version 1.0 r@WfZ  Z  
*/ ]*/%5ZOI&  
public class ImprovedQuickSort implements SortUtil.Sort { sKu/VAh x  
P]h-**O  
private static int MAX_STACK_SIZE=4096; g/3t@7*<  
private static int THRESHOLD=10; ~;)H |R5kV  
/* (non-Javadoc) 5N~JRq\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'tJb(X!]q  
*/ PvHX#wJ  
public void sort(int[] data) { I= '6>+P  
int[] stack=new int[MAX_STACK_SIZE]; ;q5.\m:  
gXy'@ !  
int top=-1; rf\/Y"D  
int pivot; I \Luw*:  
int pivotIndex,l,r; d@b" ~r}  
CpGy'Ia  
stack[++top]=0; k[ZkVwx  
stack[++top]=data.length-1; hiT&QJB` _  
H@|h Nn$@  
while(top>0){ .:wo ARW!  
int j=stack[top--]; W)~}o<a)[  
int i=stack[top--]; 7cMHzh k^  
m7 $t$/g  
pivotIndex=(i+j)/2; G*N}X3H:o  
pivot=data[pivotIndex]; ==!k99`f,  
Ns2<wl-  
SortUtil.swap(data,pivotIndex,j); %+8" -u  
^}Wk  
file://partition yiO/0nMp  
l=i-1; ?"@`SEdnU2  
r=j; ]=Tle&yM+T  
do{ 59k[A~)~  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); XbaUmCuh  
SortUtil.swap(data,l,r); *xV  
} 9YQYg@+R  
while(l SortUtil.swap(data,l,r); x?6 \C-i  
SortUtil.swap(data,l,j); ][?@) )  
9]4W  
if((l-i)>THRESHOLD){ ]yAOKmS  
stack[++top]=i; 3'jH,17lWV  
stack[++top]=l-1; YJm64H,[  
} !5^&?plC@  
if((j-l)>THRESHOLD){ qK-\`m  
stack[++top]=l+1; ]8o[&50y  
stack[++top]=j; \c(Z?`p]R1  
} qGkD] L  
U32&"&";c  
} 9er0Ww.d  
file://new InsertSort().sort(data); Of gmJ(%  
insertSort(data); :jHDeF.A  
} 5fDp"-  
/** N~! G AaD  
* @param data sZh| <2  
*/ D/oO@;`'c  
private void insertSort(int[] data) { cOoF +hz0O  
int temp; k [eWhdSw  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); >c30kpGg  
} pPH"6   
} '7yVvd  
} ,t|qhJF  
Lk`,mjhk  
} HceZTe@  
iF^    
归并排序: 4?',E ddo  
CFW#+U#U  
package org.rut.util.algorithm.support; ~{00moN"m  
ozUsp[W>  
import org.rut.util.algorithm.SortUtil; f=cj5T:[  
@.8FVF  
/** `gE_u  
* @author treeroot u"5 hlccH  
* @since 2006-2-2 aB^`3J  
* @version 1.0 Aa!#=V1d  
*/ .T*89cEu  
public class MergeSort implements SortUtil.Sort{ <(tnClAn  
@g%^H)T  
/* (non-Javadoc) 1zGhX]z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m#|h22^H  
*/ c4 bo  
public void sort(int[] data) { &s~b1Va  
int[] temp=new int[data.length]; "?Yf3G:\0  
mergeSort(data,temp,0,data.length-1); *wl&Zzx  
} !.c no&  
&]S\GnqlU]  
private void mergeSort(int[] data,int[] temp,int l,int r){ L a8D%N  
int mid=(l+r)/2; YgR}y+q^6  
if(l==r) return ; <!a%GI  
mergeSort(data,temp,l,mid); _%@ri]u{ov  
mergeSort(data,temp,mid+1,r); &:[hUn8jU  
for(int i=l;i<=r;i++){ Wu@v%!0  
temp=data; #v\o@ArX  
} X*< !_3  
int i1=l; i-M<_62c  
int i2=mid+1; (_nU}<y_i  
for(int cur=l;cur<=r;cur++){ ?656P=b)  
if(i1==mid+1) /D,<2>o  
data[cur]=temp[i2++]; EY}*}-3  
else if(i2>r) Z@gEJ^"yA"  
data[cur]=temp[i1++]; JWV n@)s  
else if(temp[i1] data[cur]=temp[i1++]; |0$7{nQ  
else 'q7&MM'oS^  
data[cur]=temp[i2++]; hwi$:[  
} zOn% \  
} d 6=Z=4w  
Gq =i-I  
} Noi+mL  
owe6ge7m  
改进后的归并排序: Q60'5Wt  
Q7pjF`wu  
package org.rut.util.algorithm.support; d37|o3oC  
r68d\N`.  
import org.rut.util.algorithm.SortUtil; %mNd9 ]<  
3Bbd2[<W  
/** 4;)aGN{e  
* @author treeroot #<81`%  
* @since 2006-2-2 LPS]TG\  
* @version 1.0 2|JtRE+  
*/ Jl@YBzDfF  
public class ImprovedMergeSort implements SortUtil.Sort { 8fC 5O  
HImQ.y!B  
private static final int THRESHOLD = 10; fDrjR6xV  
k*|WI$  
/* xF8 8'p'  
* (non-Javadoc) :89AYqT"  
* Rd ,5 &X$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KOit7+Q  
*/ b>'y[P!  
public void sort(int[] data) { ~mk>9Gp  
int[] temp=new int[data.length]; ,Wlw#1fP  
mergeSort(data,temp,0,data.length-1); NU(YllPB  
} d_)VeuE2  
C7_nA:Rc  
private void mergeSort(int[] data, int[] temp, int l, int r) { dH~i  
int i, j, k; [w?v !8l  
int mid = (l + r) / 2; uU!}/mbo  
if (l == r) }]+k  
return; IaYaIEL-  
if ((mid - l) >= THRESHOLD) g n 6@x  
mergeSort(data, temp, l, mid); C o,"  
else `FRdo  
insertSort(data, l, mid - l + 1); arb'.:[z^  
if ((r - mid) > THRESHOLD) !b?`TUt   
mergeSort(data, temp, mid + 1, r); 6rh^?B  
else H57wzG{xG  
insertSort(data, mid + 1, r - mid); `8b4P>';O'  
n|) JhXQ  
for (i = l; i <= mid; i++) { p#>d1R1&  
temp = data; MxLi'R=  
} N6w!V]b  
for (j = 1; j <= r - mid; j++) { i ?]`9z  
temp[r - j + 1] = data[j + mid]; 8=WX`*-uH  
} (dQsR sA  
int a = temp[l]; ]<:qMLg  
int b = temp[r]; _g%h:G&^  
for (i = l, j = r, k = l; k <= r; k++) { A*TO0L  
if (a < b) { :nn(Ndlz9  
data[k] = temp[i++]; p.x!dt\1kC  
a = temp; uTRFeO>  
} else { 3<X*wVi)NN  
data[k] = temp[j--]; 4&wwmAp^  
b = temp[j]; 7qEc9S@  
} df7 xpV  
} oWV^o8& GH  
} ;[!W*8.c  
?.6fVSa  
/** 4nU+Wj?T  
* @param data Ht&%`\9s  
* @param l _7N^<'B  
* @param i #jT=;G7f2  
*/ I@l }%L  
private void insertSort(int[] data, int start, int len) { N5Ih+8zT  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); (laVmU?I7  
} 3AcCa>  
} ' qN"!\  
} v<V9Z <ub  
} Hi#f Qji  
+~'ap'k m  
堆排序: o`~ %}3  
O"m(C[+ [  
package org.rut.util.algorithm.support; mecm,xwm  
5sguv^;C5  
import org.rut.util.algorithm.SortUtil; ^u$?& #  
1wt(pkNk  
/** _OvIi~KW+  
* @author treeroot qTrb)95  
* @since 2006-2-2 1Gh3o}z  
* @version 1.0 f/tJ>^N5  
*/ J:G~9~V^  
public class HeapSort implements SortUtil.Sort{ "cx#6Bo|  
 :qrCqFl  
/* (non-Javadoc) VTs ,Ln!,U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UCI !>G  
*/ E2yL9]K2  
public void sort(int[] data) { =6< Am  
MaxHeap h=new MaxHeap(); t[HA86X  
h.init(data); |5#iPw_wMY  
for(int i=0;i h.remove(); #uCE0}N@  
System.arraycopy(h.queue,1,data,0,data.length); Rd>PE=u  
} V^qkHm e  
a:}&v^v  
private static class MaxHeap{ OuV f<@a  
5<mGG;F  
void init(int[] data){ sX|bp)Nw  
this.queue=new int[data.length+1]; ;*q  
for(int i=0;i queue[++size]=data; qN(,8P\90  
fixUp(size); ]n^TN r7  
} T5? eb"  
} kC=h[<'  
Jpr`E&%I6  
private int size=0; "t:9jU  
} TsND6Ws3  
private int[] queue; Is#w=s}2  
;}QM#5Xdt  
public int get() { WzdE XcY  
return queue[1]; hVd PO  
} }e4#Mx  
[ @`Ki  
public void remove() { 4A\>O?\  
SortUtil.swap(queue,1,size--); FiW>kTM8  
fixDown(1); ))eQZ3ap9  
} P"ATqQG%D  
file://fixdown l_0/g^(  
private void fixDown(int k) { _p,1m[&M  
int j; (#5TM1/A  
while ((j = k << 1) <= size) { MH h;>tw  
if (j < size %26amp;%26amp; queue[j] j++; rLJjK$_x  
if (queue[k]>queue[j]) file://不用交换 sq1v._^s  
break; b,o@ m  
SortUtil.swap(queue,j,k); JmJNq$2#c  
k = j; ,c.(&@  
} t+%tN^87:  
} %xh A2  
private void fixUp(int k) { V;%DS)-  
while (k > 1) { Ub%1OQ  
int j = k >> 1; J>%uak<  
if (queue[j]>queue[k]) ~2M+Me  
break; _~a5;[~  
SortUtil.swap(queue,j,k); '1[Bbs  
k = j; Q|i`s=|  
} O&ZVu>`g  
} #SIIhpjA(  
ZGbY  
} jp viX#\S_  
*$EcP`K$  
} xa$p,_W:'  
Mxk0XFA  
SortUtil: k(%h{0'  
Nx^r&pr  
package org.rut.util.algorithm; E;)7#3gY1  
wh)Ujgd  
import org.rut.util.algorithm.support.BubbleSort; 4Up \_  
import org.rut.util.algorithm.support.HeapSort; 0VwmV_6'<W  
import org.rut.util.algorithm.support.ImprovedMergeSort; ;1Zz-@  
import org.rut.util.algorithm.support.ImprovedQuickSort; 8V(-S,  
import org.rut.util.algorithm.support.InsertSort; Az4a|.  
import org.rut.util.algorithm.support.MergeSort; NkL>ru!b9  
import org.rut.util.algorithm.support.QuickSort; 8*m=U@5]  
import org.rut.util.algorithm.support.SelectionSort; x9B5@2J1  
import org.rut.util.algorithm.support.ShellSort; J4>k9~q  
]] Jg%}o  
/** _{f7e^;  
* @author treeroot GK\`8xWE  
* @since 2006-2-2 J6W"t  
* @version 1.0 +VdC g_  
*/ %MUh_63bB  
public class SortUtil { EhK5<v}  
public final static int INSERT = 1; XX;MoE~MM  
public final static int BUBBLE = 2; XTPf~Te,=  
public final static int SELECTION = 3; 2nA/{W\hC  
public final static int SHELL = 4; {Bm7'%i  
public final static int QUICK = 5; &&er7_Q  
public final static int IMPROVED_QUICK = 6; j%@wQVxq  
public final static int MERGE = 7; tG}cmK~%  
public final static int IMPROVED_MERGE = 8; 2j( ]Bt:  
public final static int HEAP = 9; 'D<84|w:1  
'X{J~fEI!  
public static void sort(int[] data) { ;JAb8dyS2  
sort(data, IMPROVED_QUICK); })^%>yLfc|  
} |6y(7Ha  
private static String[] name={ )Ept yH  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" cO^}A(Ma(  
}; 2pn8PQfg)  
vivU4:uH3  
private static Sort[] impl=new Sort[]{ ;"j>k>tg  
new InsertSort(), _7qGo7bpN  
new BubbleSort(), DP<[Uz&  
new SelectionSort(), 6p1)wf.J  
new ShellSort(), I@9[  
new QuickSort(), "5@k\?x"  
new ImprovedQuickSort(), ._5"FUg  
new MergeSort(), ed6eC8@  
new ImprovedMergeSort(), &R~)/y0]  
new HeapSort() \CDzVO0^  
}; t9(sSl  
^DWhIxBh  
public static String toString(int algorithm){ /O/pAu>  
return name[algorithm-1]; -&3mOn& (1  
} =abBD   
zy!mP  
public static void sort(int[] data, int algorithm) { *^_ywqp  
impl[algorithm-1].sort(data); DgiMMmpE  
} qp)a`'Pq  
cJ#|mzup  
public static interface Sort { v#WD$9QWs  
public void sort(int[] data); T>\ r}p  
} Sm(t"#dp  
6y d/3k  
public static void swap(int[] data, int i, int j) { 0CFON2I  
int temp = data; syR +;  
data = data[j];  #:st>V_h  
data[j] = temp; /UAcN1K!B  
} dB%q`7O  
} "Nlw&+ c7  
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