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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。 lV$#>2Hh5  
插入排序: y~\uS  
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package org.rut.util.algorithm.support; ez)Ks`  
5tzO=gO[  
import org.rut.util.algorithm.SortUtil; <`NsX 6t  
/** 5h Dy62PRr  
* @author treeroot [N}QCy  
* @since 2006-2-2 <"xqt7f  
* @version 1.0 GCX?W`  
*/ JNJ6HyCU  
public class InsertSort implements SortUtil.Sort{ '5~l{3Lw  
b`,Sd.2=('  
/* (non-Javadoc) ' I!/I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t 7sEY  
*/ e=eip?p  
public void sort(int[] data) { i}i >ho-8  
int temp; +P,ic*Kq*  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 4x3 _8/=  
} a2kAZCQ  
} c&{= aIe w  
} -P&uY`  
[9:";JSl"Y  
} <h}x7y?  
xU}J6 Tv  
冒泡排序: /L@6Ae  
yF%e)6  
package org.rut.util.algorithm.support; Q<ia  
E*fa&G~s )  
import org.rut.util.algorithm.SortUtil; KaH e(  
C*B5"s"  
/** *K@O3n   
* @author treeroot 1oQbV`P  
* @since 2006-2-2 {6wXDZxv  
* @version 1.0 (TO<SY3AB  
*/ (I'{ pF)  
public class BubbleSort implements SortUtil.Sort{ 0>]&9'cn  
-mmQ]'.0  
/* (non-Javadoc) kC6Y?g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 64`l?F  
*/ |"9vq<`  
public void sort(int[] data) { i~R+ g3oi  
int temp; C3~~h|:  
for(int i=0;i for(int j=data.length-1;j>i;j--){ "a33m:]J  
if(data[j] SortUtil.swap(data,j,j-1); YI> xxWA  
} LU`)  
} Fp [49  
} ]gm3|-EiY  
} G"kX#k0S  
51H6 W/$  
} |W@Ko%om  
{?EmO+![}  
选择排序: d6 -q"  
L~by`q N_  
package org.rut.util.algorithm.support; jG)66E*"  
Y9vVi]4  
import org.rut.util.algorithm.SortUtil; *yo'Nqu  
p9mGiK4!  
/** Q)qJ6-R|HD  
* @author treeroot nn$^iw`  
* @since 2006-2-2 #o9CC)q5G  
* @version 1.0 ITi#p%  
*/ !|]k2=+I  
public class SelectionSort implements SortUtil.Sort { ,Mi'NO   
 cz>)6#&O  
/* D`X<b4e8/  
* (non-Javadoc) #F2DEo^0  
* burSb:JF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :`"- Jf  
*/ R!WDQGR(2  
public void sort(int[] data) { AN[pjC<  
int temp; 0Js5 ' 9}H  
for (int i = 0; i < data.length; i++) { rg]b$tL~  
int lowIndex = i; @\xEK5SG  
for (int j = data.length - 1; j > i; j--) { a|[f%T<<  
if (data[j] < data[lowIndex]) { 3u^wK  
lowIndex = j; qe(C>qjMbG  
} :,R>e}lM  
} fQg^^ZXe"  
SortUtil.swap(data,i,lowIndex); C=U4z|Ym  
} SkVah:cF-  
} CRrEs 18;#  
\yxGE+~P  
} 1p&=tN  
t}pYSSTz  
Shell排序: Gv }  
},Grg~l  
package org.rut.util.algorithm.support; G{Ju2HY  
)J+rt^4|  
import org.rut.util.algorithm.SortUtil; 7Q~W}`Qv'  
0/fZDQH  
/** v$(Z}Hg  
* @author treeroot [Fk|m1i!  
* @since 2006-2-2 B4+u/hkbh?  
* @version 1.0 -49I3&  
*/ p|a`Q5z!  
public class ShellSort implements SortUtil.Sort{ I3T;|;P7  
DW:\6k  
/* (non-Javadoc) [eTEK W]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o_kZ  
*/ |Zp') JiS  
public void sort(int[] data) { |UQ [pas  
for(int i=data.length/2;i>2;i/=2){ US-f<Wq  
for(int j=0;j insertSort(data,j,i); EGFPv'De  
} x;~@T9.  
} AE`{k-3=%  
insertSort(data,0,1); Qm"~XP  
} ;:J"- p  
NE) w$>0M  
/** M\7F1\ X  
* @param data t U~q4$qqE  
* @param j sE|8a  
* @param i VsK8:[Al  
*/ $ kMe8F_  
private void insertSort(int[] data, int start, int inc) { T-kHk(  
int temp; w-v8 P`V  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); REi"Aj=  
} CD^@*jH9"  
} 2.v`J=R  
} $M4_"!  
2_?VR~mA#  
} s- 0Xt<  
9:Bn-3)  
快速排序: aYHs35  
}S13]Kk?=  
package org.rut.util.algorithm.support; <8Zs; >YuK  
* 0JF|'  
import org.rut.util.algorithm.SortUtil; ^( 7l!  
rd[mC[ r  
/** ];g ~)z  
* @author treeroot {CVZ7tU7]  
* @since 2006-2-2 C$LRX7Z`o  
* @version 1.0 X9^q-3&60  
*/ mYXL  
public class QuickSort implements SortUtil.Sort{ ) R\";{`M  
r8czDc),b  
/* (non-Javadoc) ybv< 1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n%~r^ C_  
*/ $ >].;y?$  
public void sort(int[] data) { QAZs1;lU  
quickSort(data,0,data.length-1); t0P_$+w.>  
} Y(K`3? A  
private void quickSort(int[] data,int i,int j){ 55y{9.n*  
int pivotIndex=(i+j)/2; a8k`Wog  
file://swap F4Cq85#  
SortUtil.swap(data,pivotIndex,j); }20tdD ~  
p_apVm\t_  
int k=partition(data,i-1,j,data[j]); f6Y-ss;'  
SortUtil.swap(data,k,j); F%%mcmHD#  
if((k-i)>1) quickSort(data,i,k-1); wZ `{ i  
if((j-k)>1) quickSort(data,k+1,j); pXh`o20I  
iF.f*3-NJB  
} uOKdb6]r6  
/** T`<Tj?:^&  
* @param data "15frr?  
* @param i 92b}N|u  
* @param j JV/:QV  
* @return ;9J6)zg !n  
*/ 61HJ%  
private int partition(int[] data, int l, int r,int pivot) { 5,|{|/  
do{ H,j_2JOY=  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); G[OJ <px  
SortUtil.swap(data,l,r); qk0cf~ gz  
} c@4$)68  
while(l SortUtil.swap(data,l,r); 2t{Tz}g*  
return l; XZ8]se"C  
} &rG]]IO  
iP$>/[I  
} &Fk|"f+  
X .K*</(g  
改进后的快速排序: |B^Picu  
ke/4l?zs  
package org.rut.util.algorithm.support; V^}$f3\B  
W}(T5D" 3x  
import org.rut.util.algorithm.SortUtil; 7v.O Lp  
evVxzU&  
/** 8S[bt@v  
* @author treeroot u`!Dp$P  
* @since 2006-2-2 ~= otdJ  
* @version 1.0 #D >:'ezm  
*/ FZ8Qj8  
public class ImprovedQuickSort implements SortUtil.Sort { F6h IG G  
[w+1<ou;j  
private static int MAX_STACK_SIZE=4096; u{l4O1k/c  
private static int THRESHOLD=10; ,k9.1kjO*)  
/* (non-Javadoc) i?mUQ'H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7 VYhRC-  
*/ ps/|^8aGZ  
public void sort(int[] data) { ,t'"3<^Jg  
int[] stack=new int[MAX_STACK_SIZE]; 6_tl_O7  
F2)KAIl  
int top=-1; qB`%+<)C  
int pivot; -|=)  
int pivotIndex,l,r; -`t9@1P> =  
e?]HNy  
stack[++top]=0; Az>r}*F Gr  
stack[++top]=data.length-1; `P*wZKlW  
T[cJ   
while(top>0){ 9}q)AL-ga  
int j=stack[top--]; X%7l! k[  
int i=stack[top--]; RYl\Q,#  
4 .(5m\s!  
pivotIndex=(i+j)/2; aH, NS   
pivot=data[pivotIndex]; <si cldz  
@;S)j!m`  
SortUtil.swap(data,pivotIndex,j); q+w] Xs;  
fM*aZc*Y  
file://partition )M7~RN  
l=i-1; <9;X1XtpI  
r=j; Ngm/5Lc  
do{ 8'v:26   
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); n# FkgXP$  
SortUtil.swap(data,l,r); [DtMT6F3  
} Z 2$S'}F  
while(l SortUtil.swap(data,l,r); MY(51)*  
SortUtil.swap(data,l,j); Jt?`(H  
|Fq\%y#  
if((l-i)>THRESHOLD){ m/,8\+  
stack[++top]=i; GQE7P()  
stack[++top]=l-1; q)YHhH\  
} 1gLET.I:  
if((j-l)>THRESHOLD){ 'BVI^H4  
stack[++top]=l+1; 5T'v iG}%  
stack[++top]=j; `+UBl\j  
} ,}I m^~5  
|n(b>.X  
} #!r>3W&  
file://new InsertSort().sort(data); FIQHs"#T  
insertSort(data); (^<skx>  
} =#&+w[4?&.  
/** N)KN!!  
* @param data T@n};,SQ  
*/ Qv8 =CnuOT  
private void insertSort(int[] data) { W{ZJ^QAq/  
int temp; )E6E}  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^Q!A4 qOQ  
} &u (pBr8B  
} 8Qkwg]X  
} O}6*9Xy  
ydE}.0zN  
} jd}~#:FUr*  
#V Z js`d6  
归并排序: 0rAuK7  
Jl$ X3wE  
package org.rut.util.algorithm.support; z07:E>D]  
A 0;ng2&  
import org.rut.util.algorithm.SortUtil; e_1L J  
xi)M8\K  
/** 1XHE:0!dQ  
* @author treeroot ?|n@ %'  
* @since 2006-2-2 wV4MP1c$  
* @version 1.0 Nfmr5MU_  
*/ TEC#owz  
public class MergeSort implements SortUtil.Sort{ }rWg ']  
j`MK\*qmz  
/* (non-Javadoc) [Z!oVSCZD%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +9# qNkP  
*/ "`* >co6r  
public void sort(int[] data) { %e+*&Z',  
int[] temp=new int[data.length]; 58o&Dv6?  
mergeSort(data,temp,0,data.length-1); U.N& ~S  
} Xl>ZnI];  
-L wz T  
private void mergeSort(int[] data,int[] temp,int l,int r){ +.xK`_[M  
int mid=(l+r)/2; Lu4>C2{  
if(l==r) return ; $3eoZ1q'U-  
mergeSort(data,temp,l,mid); VpED9l]y  
mergeSort(data,temp,mid+1,r); c/Li,9cT'  
for(int i=l;i<=r;i++){ Zk31|dL  
temp=data; 1I8<6pi-  
} WkPT6d  
int i1=l; q 'uGB fE.  
int i2=mid+1; LO38}w<k  
for(int cur=l;cur<=r;cur++){ a!;#u 8f  
if(i1==mid+1) gMU%.%p2  
data[cur]=temp[i2++]; Ejyo oO45  
else if(i2>r) n6C!5zq7U  
data[cur]=temp[i1++]; iaRCV 6cl  
else if(temp[i1] data[cur]=temp[i1++]; "Sw raq  
else GX*9R>  
data[cur]=temp[i2++]; j%8 1q  
} l}D /1~d  
} z<9Llew^e  
'7.4!I0'  
} !=6\70lJ  
Nema>T]  
改进后的归并排序: G"Hj$  
:_o^oi7G  
package org.rut.util.algorithm.support; oZi{v]4  
##OCfCW  
import org.rut.util.algorithm.SortUtil; Qp>Z&LvC5  
D|'[[=  
/** Xv 7noq|  
* @author treeroot BUyKiMW49  
* @since 2006-2-2 mR8tW"Z2  
* @version 1.0 yI%q3lB}^  
*/ /.sho\a  
public class ImprovedMergeSort implements SortUtil.Sort { &{ZUY3  
4Wa*Pcj  
private static final int THRESHOLD = 10; y'O<*~C(X  
y-"QY[  
/* :kd]n$]  
* (non-Javadoc) v8C4BuwA  
* 7'|aEH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t8*NldC  
*/ }?sC1]-j&  
public void sort(int[] data) { y!_8m#n S  
int[] temp=new int[data.length]; 3kVN[0  
mergeSort(data,temp,0,data.length-1); Au:R]7   
} =RQI5 nHdw  
`X<a(5[vV3  
private void mergeSort(int[] data, int[] temp, int l, int r) { M6].V*k'2  
int i, j, k; .sKfwcYu4  
int mid = (l + r) / 2; 'UC1!Z  
if (l == r) %pf9Yd0t  
return; bo@, B  
if ((mid - l) >= THRESHOLD) z8xBq%97us  
mergeSort(data, temp, l, mid); er3`ITp:dp  
else <*o V-A  
insertSort(data, l, mid - l + 1); //%#?JJV  
if ((r - mid) > THRESHOLD) {P )O#  
mergeSort(data, temp, mid + 1, r); 4b6)+*[O  
else ^@Z8 _PZo  
insertSort(data, mid + 1, r - mid); ^|2m&2  
FwD q@Oj  
for (i = l; i <= mid; i++) { ^$[iLX  
temp = data; YWL7.Y>%5  
} 8i)9ho<  
for (j = 1; j <= r - mid; j++) { z|\n^ZK=  
temp[r - j + 1] = data[j + mid]; #er% q:  
} ^1_CS*  
int a = temp[l]; [\  &2&  
int b = temp[r]; lR]FQnZ  
for (i = l, j = r, k = l; k <= r; k++) { @|e we. r  
if (a < b) { kU.@HJ[@j  
data[k] = temp[i++]; =T1Xfib  
a = temp; #qeC)T  
} else { *eI{g  
data[k] = temp[j--]; 4 =T_h`  
b = temp[j]; 8]rObT9>  
} RF~G{wz  
} 0?O_]SD  
}  2IGU{&s  
sd =bw  
/** m)Wq*&,o  
* @param data Jm"W+! E  
* @param l Hx!eCTO:*  
* @param i 7U2B=]<e-  
*/ gAf4wq  
private void insertSort(int[] data, int start, int len) { !T 9CpIM%  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 8~ &=vc  
} 6?[SlPPE1  
} ,LDL%<7t  
} @Bn4ZF B@  
} m;L 3c(r.  
7xYz9r)w`  
堆排序: )g }G{9M^  
6~x a^3G:  
package org.rut.util.algorithm.support; t D4-Llj6  
I&<'A [vHl  
import org.rut.util.algorithm.SortUtil; 1aUg({  
b~@+6 ?  
/** +@*>N;$  
* @author treeroot ]'$:Y   
* @since 2006-2-2 0G2Y_A&e**  
* @version 1.0 -Kcjnl92i  
*/ J6"GHbsO  
public class HeapSort implements SortUtil.Sort{ .tQ(q=#  
COmu.'%*  
/* (non-Javadoc) 34nfL: y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5fYWuc9}z  
*/ 'f CSP|  
public void sort(int[] data) { LXPO@2QF  
MaxHeap h=new MaxHeap(); 2A9crL $  
h.init(data); C%CgWO`Xj  
for(int i=0;i h.remove(); $: |`DCC  
System.arraycopy(h.queue,1,data,0,data.length); GSd:Plc%  
} \&ki79Ly-  
AWssDbh/[  
private static class MaxHeap{ M9m~ck  
uh\Tf5  
void init(int[] data){ u|6-[I  
this.queue=new int[data.length+1]; oK$Krrs0&  
for(int i=0;i queue[++size]=data; 'f.k'2T  
fixUp(size); WWo"De@  
} ?<Lm58p8  
} ]E'?#z.t  
g,W34*7=Q  
private int size=0; L 4Z+8*  
N Z ,}v3  
private int[] queue; PN:`SWP  
.k +>T*c{  
public int get() { r adP%W-U  
return queue[1]; UBk:B  
} c;06>1=wP5  
OK YbEn#  
public void remove() { t1yOAbI  
SortUtil.swap(queue,1,size--); )VqPaKZl  
fixDown(1); E'5KJn;_7  
} 3d4A~!Iz  
file://fixdown O'{kNr{u  
private void fixDown(int k) { lnLy"f"zV  
int j; e4tC[6;  
while ((j = k << 1) <= size) { t%0c$c  
if (j < size %26amp;%26amp; queue[j] j++; Lo5pn  
if (queue[k]>queue[j]) file://不用交换 USHQwn)%  
break; )jg*u}u 0  
SortUtil.swap(queue,j,k); foL4s;2  
k = j; hZ!kh3@:`  
} 3IB9-wG  
} {2q0Ko<  
private void fixUp(int k) { 8eYEi  
while (k > 1) { =tP^vgfQ  
int j = k >> 1;  + #E?)  
if (queue[j]>queue[k]) 7J ?s&x  
break; B([-GpZt[  
SortUtil.swap(queue,j,k); 'J5F+, \Ka  
k = j; K2e *AE*  
} (n7{?`Yid  
} #g0N/  
 Fq5u%S  
} ! Vlx  
('$*QC.M  
} _ qwf3Q@  
*N:0L,8  
SortUtil: *+2_!=4V  
@!O(%0 =  
package org.rut.util.algorithm; DT)] [V^w  
8{ =ha  
import org.rut.util.algorithm.support.BubbleSort; ~(huUW  
import org.rut.util.algorithm.support.HeapSort; lSO$Q]!9  
import org.rut.util.algorithm.support.ImprovedMergeSort; ' i<4;=M&  
import org.rut.util.algorithm.support.ImprovedQuickSort; Un,'a8>V`  
import org.rut.util.algorithm.support.InsertSort; udIm}jRA"  
import org.rut.util.algorithm.support.MergeSort; -.ZP<,?@F  
import org.rut.util.algorithm.support.QuickSort; \i@R5v=zL  
import org.rut.util.algorithm.support.SelectionSort; .:B>xg~2  
import org.rut.util.algorithm.support.ShellSort; );6f8H@G  
,4 _H{+M  
/** m<kJH<!j  
* @author treeroot `Syfl^9B  
* @since 2006-2-2 4z26a  
* @version 1.0 ~J> ;l s1  
*/ BHYguS^qz  
public class SortUtil { .XiO92d9  
public final static int INSERT = 1; vyB{35p$  
public final static int BUBBLE = 2; (v|<" tv  
public final static int SELECTION = 3; \_6  
public final static int SHELL = 4; 75R#gQ]EV  
public final static int QUICK = 5; !MOsP<2  
public final static int IMPROVED_QUICK = 6; zUZET'Bm9  
public final static int MERGE = 7; 5>daWmD  
public final static int IMPROVED_MERGE = 8; T!>hPg  
public final static int HEAP = 9; )b>misb/  
F4WX$;1  
public static void sort(int[] data) { V45adDiZ  
sort(data, IMPROVED_QUICK); / x$JY\cq`  
} 6 w{_+=T  
private static String[] name={ fjl 9*  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" LL)t)  
}; ^blw\;LB  
DI2e%`$  
private static Sort[] impl=new Sort[]{ ls!A'@J  
new InsertSort(), !Ko>   
new BubbleSort(), !G0Mg; ,  
new SelectionSort(), VwZ~ntk  
new ShellSort(), ;in-)`UC!  
new QuickSort(), :yJ([  
new ImprovedQuickSort(), ^_DwuY  
new MergeSort(), Zv=pS (9  
new ImprovedMergeSort(), $x]/|u/9  
new HeapSort() lNyyL Lt  
}; CI-za !T  
[u2t1^#Ol  
public static String toString(int algorithm){ {=mGXd`x?l  
return name[algorithm-1]; 92A9gY  
} 8wOscL f:  
<OKc?[  
public static void sort(int[] data, int algorithm) { Y)1J8kq_  
impl[algorithm-1].sort(data); qGEp 6b H  
} a%si:_  
ty rP[y  
public static interface Sort { -WF((s;<#  
public void sort(int[] data); /V/NL#(R  
} zNoFM/1Vb  
ha=2isq  
public static void swap(int[] data, int i, int j) { 2ww H3}  
int temp = data; ryh"/lu[B  
data = data[j]; oVn&L*H   
data[j] = temp; eA-oqolY  
} nK?S2/o#A  
} C~@m6K  
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