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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。 dKTyh:_{  
插入排序: Oq@+/UWX  
H?*EQK`7?0  
package org.rut.util.algorithm.support; 'i;1n  
B(7oHj.i2  
import org.rut.util.algorithm.SortUtil; 6=U81  
/** DDQ}&`s  
* @author treeroot H C(Vu  
* @since 2006-2-2 T\I}s"d  
* @version 1.0 3)88B"E  
*/ g>-pC a  
public class InsertSort implements SortUtil.Sort{ 3O7]~5 j1  
qq.M]?Z  
/* (non-Javadoc) Z8E-(@`q5Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WHeyE3}p  
*/ Yz]c'M@  
public void sort(int[] data) { (RVe,0y  
int temp; #%N v\ g;  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); M<^]Ywq*p  
} 7aRtw:PQn  
} _QBN/KE9  
} 0gO_dyB  
Swz{5 J2C  
} 0b6jGa  
|a4cER.'2^  
冒泡排序: CX?q%o2b  
3 9to5 s,  
package org.rut.util.algorithm.support; .Ds d Q4Y  
+Ac.@!X}%  
import org.rut.util.algorithm.SortUtil; ~k\Dde  
WJWi'|C4  
/** KBE3q)  
* @author treeroot .2"-N5Z  
* @since 2006-2-2 v e($l"T  
* @version 1.0 ?C)a0>L  
*/ mSLA4[4{  
public class BubbleSort implements SortUtil.Sort{ B|pO2d e  
(rqc_ZU5  
/* (non-Javadoc) %]7'2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `ppyCUX  
*/ @W}cM  
public void sort(int[] data) { b .I_  
int temp; >*s_)IH2  
for(int i=0;i for(int j=data.length-1;j>i;j--){ m%m<-.'-  
if(data[j] SortUtil.swap(data,j,j-1); 0DtewN{Z  
} jq%%|J.x  
} %"-bG'Yc  
} <G|i!Pm  
} Ln:6@Ok)5%  
[NE|ZL~  
} cq]JD6937  
& "i4og<  
选择排序: V%h,JA  
dUN{@a\R0  
package org.rut.util.algorithm.support; ' ` _TFTO  
}Q $}LR@  
import org.rut.util.algorithm.SortUtil; }`KK  
i(T[  
/** Y TpiOPf  
* @author treeroot JfD-CoQS'  
* @since 2006-2-2 fg$#ZCi  
* @version 1.0 fi%)520  
*/ &1 /OwTI4J  
public class SelectionSort implements SortUtil.Sort { 4>^LEp  
`%QXaKO-  
/* (#kKL??W  
* (non-Javadoc) Hjhgu=  
* "s-3226kj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y0vJ@ %`  
*/ H9;0$Y(e-  
public void sort(int[] data) { 0N;~(Vt2  
int temp; Z(j"\d!y  
for (int i = 0; i < data.length; i++) { ) >;7"v  
int lowIndex = i;  I~T   
for (int j = data.length - 1; j > i; j--) { /H4Z.|@  
if (data[j] < data[lowIndex]) { /RVwhA+c  
lowIndex = j; lfvt9!SJ+/  
} '0-YFx'U0V  
} \SSHjONX  
SortUtil.swap(data,i,lowIndex); 8Q%g<jX*  
} CvhVV"n  
} >$$z6A[  
u9nJ;:  
} ai%*s&0/Y  
"; 1@f"kw  
Shell排序: P~ : N  
g(_xo\  
package org.rut.util.algorithm.support; "QD>m7  
"I3 #/~q  
import org.rut.util.algorithm.SortUtil; GCf,Gfmr  
BP4xXdG  
/** @C-03`JWuK  
* @author treeroot c@3mfc{  
* @since 2006-2-2 Hr_5N,  
* @version 1.0 {V,aCr  
*/ {Qi J-[q  
public class ShellSort implements SortUtil.Sort{ |\zzOfaO  
zu3Fi = |0  
/* (non-Javadoc) rJZR8bo  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (> W \Nf  
*/ l~]D|92  
public void sort(int[] data) { '-U&S  
for(int i=data.length/2;i>2;i/=2){ ]p8 zT|bv  
for(int j=0;j insertSort(data,j,i); zmU@ k  
} SZ29B  
} l+#J oc<8  
insertSort(data,0,1); 0iYo&q'n  
} "(r%`.l=I  
;6eBfMhL  
/** Vwu dNjL  
* @param data 5?MaKNm}  
* @param j 5U-SIG*  
* @param i ]A ;.}1'  
*/ yk y% +@2q  
private void insertSort(int[] data, int start, int inc) { lD^c_b  
int temp; @Jx1n Q^  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); hK,a8%KnFA  
} 5cGQ`l  
} ^Q6?T(%$  
} 2E8G 5?qe)  
He,, bq  
} @R-11wP)M  
2x>7>;>  
快速排序: b'``0OB)  
ZIKSHC9  
package org.rut.util.algorithm.support; *`} !{ Mb  
t~7OtPF  
import org.rut.util.algorithm.SortUtil; (dfC}x(3h  
TjDtNE  
/** 'hE'h?-7  
* @author treeroot IyI0|&r2A  
* @since 2006-2-2 q{&\nCy  
* @version 1.0 0-~s0R89A  
*/ []v$QR&u#v  
public class QuickSort implements SortUtil.Sort{ )s,LFIy<A  
Gx %=&O  
/* (non-Javadoc) (dZ]j){  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RL:B.Lv/W  
*/ O6/:J#X%  
public void sort(int[] data) { $ay!'MK0d  
quickSort(data,0,data.length-1); oYdE s&qq  
} &?1O D5  
private void quickSort(int[] data,int i,int j){ Lb)rloca  
int pivotIndex=(i+j)/2; 6DU~6c=)  
file://swap _p>F43%p  
SortUtil.swap(data,pivotIndex,j); ,-hbwd~M  
n$`+03a  
int k=partition(data,i-1,j,data[j]); ; PncJe5x  
SortUtil.swap(data,k,j); :hT.L3n,  
if((k-i)>1) quickSort(data,i,k-1); e!PB3I  
if((j-k)>1) quickSort(data,k+1,j); ~o#mX?'7  
NT0n [o^  
} N8pV[\f  
/** .X qeO@z  
* @param data 81"` B2  
* @param i  =n5n  
* @param j _Dd>e=v  
* @return 5F+G8  
*/ T60pw  
private int partition(int[] data, int l, int r,int pivot) { cF 4,dnI  
do{ <}:` Y"  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot);  z3]W #  
SortUtil.swap(data,l,r); d!w3LwZ  
} u7^(?"x  
while(l SortUtil.swap(data,l,r); ~+j2a3rv-{  
return l; 1 _Oc1RM   
} JOpH Z?  
T>]T=  
} ~;?<OOt|wG  
tu Y+n 2  
改进后的快速排序: YGC%j  
r<vy6  
package org.rut.util.algorithm.support; VP>*J`'H  
PxgJ7d  
import org.rut.util.algorithm.SortUtil; -$?t+ "/E  
`vMhrn  
/** p J_+n:_{  
* @author treeroot E_En"r)y  
* @since 2006-2-2 ff5 gE'  
* @version 1.0 z~X/.>  
*/ ymyzbE  
public class ImprovedQuickSort implements SortUtil.Sort { 9Q^cE\j  
5L:-Xr{  
private static int MAX_STACK_SIZE=4096; jQzl!f1c3  
private static int THRESHOLD=10; 'UUj(1 f  
/* (non-Javadoc) f+Acs*. GQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q&N#q53  
*/ $%q=tn'EX  
public void sort(int[] data) { nX 9]dz  
int[] stack=new int[MAX_STACK_SIZE]; S\h5 D2G;  
HO['o{>BL  
int top=-1; hO&b\#@~  
int pivot; ! ig& 8:  
int pivotIndex,l,r; OtoM  
hiBsksZRnk  
stack[++top]=0; bq9w@O  
stack[++top]=data.length-1; u1L^INo/  
H)i|?3Ip  
while(top>0){ "5Y6.$Cuf!  
int j=stack[top--]; iX6>u4~(  
int i=stack[top--]; u*v<dsGQ  
=V]0G,,\  
pivotIndex=(i+j)/2; E0R6qS:'  
pivot=data[pivotIndex]; >> "gb/x,  
uZtN,Un  
SortUtil.swap(data,pivotIndex,j); p d#Sn+&rf  
>iae2W`  
file://partition YO.+-(   
l=i-1; 8k95IJR1  
r=j; fCx (  
do{ \OA{&G.  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 4[@YF@_=M  
SortUtil.swap(data,l,r); t|eH'"N%o  
} E#!!tH`lgg  
while(l SortUtil.swap(data,l,r); $GFR7YC 7  
SortUtil.swap(data,l,j); Mn(iAsg  
Z.Yq)\it  
if((l-i)>THRESHOLD){ g/JF(nkP  
stack[++top]=i; A$3Rbn}"  
stack[++top]=l-1; R`cP%7K  
} 1'\QD`M9^  
if((j-l)>THRESHOLD){ X0u,QSt' O  
stack[++top]=l+1; q50F!yHC-  
stack[++top]=j; /3,Lp-kp  
} >P SO]%mE  
Q}|K29Y:p  
} ,JE_aje7  
file://new InsertSort().sort(data); Q0Ft.b  
insertSort(data); LXK!4(xaW  
} WN+i3hC  
/** 8Rwk o6x  
* @param data u*G<?  
*/ lP3|h*  
private void insertSort(int[] data) { az6 &  
int temp; lb. Q^TghU  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); X}v*"`@Q  
} Sy|GM~  
} 4MzQH-U>/  
} h9)fXW  
%`yfi+e  
} GYx0U8MJ[e  
B= {_}f  
归并排序: Q2VF+g,  
o=3hWbe  
package org.rut.util.algorithm.support; n?.;*:  
W~/d2_|/  
import org.rut.util.algorithm.SortUtil; &)mZ~cPU3  
>MHlrSH2  
/** mkn1LzE|F  
* @author treeroot p0bWzIH  
* @since 2006-2-2 kun/KY  
* @version 1.0 x%=CEe?6  
*/ FAEF  
public class MergeSort implements SortUtil.Sort{ H\R a*EO~j  
8u+kA mI  
/* (non-Javadoc) N s+g9+<A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e~SK*vR%]  
*/ Nnl3r@  
public void sort(int[] data) { YpDJ(61+  
int[] temp=new int[data.length]; |nZ^RCHog  
mergeSort(data,temp,0,data.length-1); aDK b78 1d  
} </{Zb.  
+7 H)s  
private void mergeSort(int[] data,int[] temp,int l,int r){ qh~bX i!  
int mid=(l+r)/2; 1IA1;  
if(l==r) return ; ?eIb7O  
mergeSort(data,temp,l,mid); vd4@jZ5  
mergeSort(data,temp,mid+1,r); ;>v.(0FE6  
for(int i=l;i<=r;i++){ ~\_VWXXvIW  
temp=data; =0=#M(w  
} sllT1%?  
int i1=l; b&U1^{(  
int i2=mid+1; '`P%;/z  
for(int cur=l;cur<=r;cur++){ XMuZ}u[U  
if(i1==mid+1) hy*{ {f;  
data[cur]=temp[i2++]; D*%am|QL  
else if(i2>r) [s>3xWZ+a  
data[cur]=temp[i1++]; fY!?rZ)$  
else if(temp[i1] data[cur]=temp[i1++]; X_TjJmc  
else 0SIC=p=J  
data[cur]=temp[i2++]; ETdXk&AN  
} dH^6K0J  
} by@KdQow  
ST*h{:u&A  
} );gY8UL^  
}csA|cC  
改进后的归并排序: W[8Kia-OD  
/| v.A\ :  
package org.rut.util.algorithm.support; <kK>C8+  
7AV{ h[J  
import org.rut.util.algorithm.SortUtil; 2tq2   
uQ5h5Cfz  
/** Y@+Rb  
* @author treeroot ;5j|B|v  
* @since 2006-2-2 %":3xj'EEI  
* @version 1.0 IL].!9  
*/ Z+El(f x  
public class ImprovedMergeSort implements SortUtil.Sort { h<G4tjtk  
i.Rl&t  
private static final int THRESHOLD = 10; .11l(M  
:jiuu@<  
/* qVn<c,8#  
* (non-Javadoc) nje7?Vz  
* ENTcTrTn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aOzIo-  
*/ iS$[dC ?N  
public void sort(int[] data) { !=dz^f.{  
int[] temp=new int[data.length]; G?W:O{n3  
mergeSort(data,temp,0,data.length-1); Rd#R}yA  
} Y!<m8\  
^[?y 2A:  
private void mergeSort(int[] data, int[] temp, int l, int r) { ?"x4u#x  
int i, j, k; C}8#yAS9M  
int mid = (l + r) / 2; b(*\4n  
if (l == r) RQ,#TbAe  
return; D\Ak-$kJ^  
if ((mid - l) >= THRESHOLD) QL/KY G  
mergeSort(data, temp, l, mid); A[Mke  
else ~:a1ELqVw  
insertSort(data, l, mid - l + 1); UM7@c7B?  
if ((r - mid) > THRESHOLD) iq; | i!  
mergeSort(data, temp, mid + 1, r); 75# 8P?i  
else g&$=Y7G  
insertSort(data, mid + 1, r - mid); tIuM9D{P  
*2/Jg'de  
for (i = l; i <= mid; i++) { axC|,8~tq  
temp = data; ,;g%/6X  
} Z.\q$U7'9  
for (j = 1; j <= r - mid; j++) { ;I>nA6A  
temp[r - j + 1] = data[j + mid]; cJ4My#w  
} cJo%j -AM  
int a = temp[l]; \O|SPhaIf  
int b = temp[r]; 7Jn%XxHq  
for (i = l, j = r, k = l; k <= r; k++) { ]Z!Y *v  
if (a < b) { #J[g r_  
data[k] = temp[i++]; C`.YOkpj  
a = temp; nrl?<4 _  
} else { ,h*gd^i  
data[k] = temp[j--]; N*Aw-\Bk  
b = temp[j]; N<)CG,/w[M  
} yYCS-rF>  
} 'UhoKb_p  
} mfr aw2H  
\ "O5li3n  
/** ;+hh|NiQ  
* @param data cE\w6uBR1  
* @param l WcN4ff-  
* @param i :aNjh  
*/ -"[4E0g0  
private void insertSort(int[] data, int start, int len) { v vErzUxN  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); cIU2qFn[  
} Z<vz%7w  
} A0{xt*g   
} t!?`2Z5  
} !l'nX  
|;gx;qp4cN  
堆排序: C[^VM$  
IK -vcG  
package org.rut.util.algorithm.support; AzU:Dxr>.G  
I-#!mFl  
import org.rut.util.algorithm.SortUtil; zIc6L3w$  
6N@=*0kh-  
/** r^,_m,s'<  
* @author treeroot !:+U-mb*  
* @since 2006-2-2 g0,~|.  
* @version 1.0 yhH2b:nY(9  
*/ y_WC"  
public class HeapSort implements SortUtil.Sort{ Oc)n,D)0  
:,8y8z$+  
/* (non-Javadoc) KMhrw s{&B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7F"ljkN1S  
*/ 48xgl1R(j  
public void sort(int[] data) { 7'wpPXdY1  
MaxHeap h=new MaxHeap();  4!!|P  
h.init(data); maa pX/J  
for(int i=0;i h.remove(); G@s:|oe  
System.arraycopy(h.queue,1,data,0,data.length); c^|8qvS $  
} Z!v,;MW  
>@N.jw>#T  
private static class MaxHeap{ 1]} \h]*  
!&U75FpN}:  
void init(int[] data){  <$nPGz)}  
this.queue=new int[data.length+1]; Q=Q+*oog  
for(int i=0;i queue[++size]=data; f} c;s  
fixUp(size); ?O 25k!7  
} i@/%E~W  
} *JOK8[Qn  
%<yW(s9{  
private int size=0; 2^XmtT  
6C$+D  
private int[] queue; I gJu/{:y^  
o#FctM'Z  
public int get() { #hBqgG:>  
return queue[1]; #c|l|Xvq2  
} LNL}R[1(  
 *RY}e  
public void remove() { g!0 j1  
SortUtil.swap(queue,1,size--); h),;j`PrC  
fixDown(1); IsE&k2 SD  
} {tVA(&\<  
file://fixdown B} qRz  
private void fixDown(int k) { (CQ! &Z8  
int j; m]DP{-s4  
while ((j = k << 1) <= size) { {JWixbA  
if (j < size %26amp;%26amp; queue[j] j++; T)tr"<F5NP  
if (queue[k]>queue[j]) file://不用交换 [)`*k#.=  
break; yK{P%oh)  
SortUtil.swap(queue,j,k); h x^@aI  
k = j; k2Q[v  
} rT="ciQ  
} B+FTkJ0t+G  
private void fixUp(int k) { #7fOH U8v  
while (k > 1) { jHq+/\  
int j = k >> 1; q`AsnAzo&  
if (queue[j]>queue[k]) 2`i &6iz  
break; [CHN3&l-5S  
SortUtil.swap(queue,j,k); #mH28UT  
k = j; ?3DL .U{  
} :/->m6C`0  
} xEG:KSH  
py$Gy-I~[  
} `y'%dY}$n  
 3B#fnj  
} 9Zx| L/\  
A7QT4h&6  
SortUtil: F]OWqUV  
`@ Z$+  
package org.rut.util.algorithm; }r04*P(  
X'd\b}Bm  
import org.rut.util.algorithm.support.BubbleSort; @kd$.7Y9  
import org.rut.util.algorithm.support.HeapSort; s\.r3U&6  
import org.rut.util.algorithm.support.ImprovedMergeSort; 2 zo>`;l  
import org.rut.util.algorithm.support.ImprovedQuickSort; c%<81Y=  
import org.rut.util.algorithm.support.InsertSort; S*r }oX0  
import org.rut.util.algorithm.support.MergeSort; dhLd2WSyH  
import org.rut.util.algorithm.support.QuickSort; 4gZR!J  
import org.rut.util.algorithm.support.SelectionSort; E2hML  
import org.rut.util.algorithm.support.ShellSort; 5P*jGOg.  
319 4]  
/** QP%AJ[3ea%  
* @author treeroot 3meZ]u  
* @since 2006-2-2 P'}EZ'  
* @version 1.0 JNU9RxR  
*/ u}'m7|)8  
public class SortUtil { d3oRan}z  
public final static int INSERT = 1; )m-(-I  
public final static int BUBBLE = 2; } %3;j5 ;6  
public final static int SELECTION = 3; 9 'X"a  
public final static int SHELL = 4; g9GPy U  
public final static int QUICK = 5; =j_4!^  
public final static int IMPROVED_QUICK = 6; ml~ )7J  
public final static int MERGE = 7; p+I`xyk  
public final static int IMPROVED_MERGE = 8; :t;\`gQoS  
public final static int HEAP = 9; 6/a%%1c1  
KYhL}C+  
public static void sort(int[] data) { o &b\bK%E  
sort(data, IMPROVED_QUICK); '<"%>-^Gn  
} i [/1AI  
private static String[] name={ |}l/6WHB  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" `[=/f=Q}  
}; mv<cyWp  
?zo7.R-Vac  
private static Sort[] impl=new Sort[]{ c3fd6Je5  
new InsertSort(), x}C$/7^  
new BubbleSort(), (>Sy,  
new SelectionSort(), 1\jj3Y'i'  
new ShellSort(), I/h(*~/  
new QuickSort(), JWt@vf~  
new ImprovedQuickSort(), #,j m3M qj  
new MergeSort(), tjZS:@3 Z  
new ImprovedMergeSort(), %*L8W*V  
new HeapSort() ,[n=PJVw/  
}; q:_-#u  
s_u! RrC  
public static String toString(int algorithm){ 0s4]eEXH  
return name[algorithm-1]; gYL#} )g  
} &S^a_L:  
CJ;D&qo  
public static void sort(int[] data, int algorithm) { ^]LWcJ?"^!  
impl[algorithm-1].sort(data); 4YMUkwh  
} (Q"s;g  
.>5E 4^$%  
public static interface Sort { ?AQR\)P  
public void sort(int[] data); C-2#-{<  
} NS4W!o;"  
T.!.3B$@]  
public static void swap(int[] data, int i, int j) { :2L-Nf  
int temp = data; 7r3EMX\#Qm  
data = data[j]; K>+c2;t;  
data[j] = temp; En+`ZcA\z  
} }g.)%Bw!  
} q_6 <}2m,U  
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