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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。 rjffpU  
插入排序: J>l?HK  
|v:oLgUdH  
package org.rut.util.algorithm.support; )J*M{Gm6i  
*b'4>U  
import org.rut.util.algorithm.SortUtil; 6k_Uq.<X  
/** z$gtGrU  
* @author treeroot SZ29B  
* @since 2006-2-2 l+#J oc<8  
* @version 1.0 0iYo&q'n  
*/ _01wRsm%2  
public class InsertSort implements SortUtil.Sort{ nb<e<>L  
u,V_j|(e  
/* (non-Javadoc) 0~~yYo&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \q($8<  
*/ {xAd>fGG+y  
public void sort(int[] data) { vPz$+&{I  
int temp; y\omJx=,  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); e2e!"kEF  
} ;FQNO:NP  
} NbC2N)L4  
} +4$][3.  
@XJ#oxM^  
} C}#$wge  
@ ]40xKF  
冒泡排序: f8 BZkh  
E!'6v DVC:  
package org.rut.util.algorithm.support; [~PR\qm  
Ur]/kij  
import org.rut.util.algorithm.SortUtil; o%bf7)~s  
|1GOm=GNK  
/** 6Df*wi!jI  
* @author treeroot ,<N{Y[n]e  
* @since 2006-2-2 HfZ^ED"}  
* @version 1.0 0 N"N$f  
*/ Xp] jF^5  
public class BubbleSort implements SortUtil.Sort{ j7U&a}(  
1fvN[  
/* (non-Javadoc) PB *v45  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e|?eY)_  
*/ 2eHVl.C5  
public void sort(int[] data) { qu1+.z=|  
int temp; =z;]FauR!  
for(int i=0;i for(int j=data.length-1;j>i;j--){ RL:B.Lv/W  
if(data[j] SortUtil.swap(data,j,j-1); 3.@LAF  
} $ay!'MK0d  
} oYdE s&qq  
} RC}m]!Uz  
} w3ATsIw  
CuD}Uo+u  
} O wuc9  
&r.M~k >  
选择排序: C{,^4Eh3r  
P1AC2<H  
package org.rut.util.algorithm.support; XUzOt_L5<  
p^|6 /b  
import org.rut.util.algorithm.SortUtil; Jz=|-F(Sy  
~4pP( JP  
/** |.,]0CRg  
* @author treeroot pHuR_U5*?  
* @since 2006-2-2 a2Nxpxho  
* @version 1.0 WW.@&#S5  
*/ L2+cVR  
public class SelectionSort implements SortUtil.Sort { AT)b/ycC  
$|xSM2  
/* $[}EV(#y  
* (non-Javadoc) F~i ~%f,  
* k_{?{:X;y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JO`r)_  
*/ p U9 .#O  
public void sort(int[] data) { 5RvE ),  
int temp; Q5ff&CE  
for (int i = 0; i < data.length; i++) { JOpH Z?  
int lowIndex = i; (BFwE@1"  
for (int j = data.length - 1; j > i; j--) { ^D5Jqh)  
if (data[j] < data[lowIndex]) { pmUf*u-  
lowIndex = j; YGC%j  
} r<vy6  
} VP>*J`'H  
SortUtil.swap(data,i,lowIndex); PxgJ7d  
} -$?t+ "/E  
} `vMhrn  
p J_+n:_{  
} ~uH_y-  
S :8  
Shell排序: 70GBf"  
nj0sh"~+  
package org.rut.util.algorithm.support; l 9 wO x  
$,2T~1tE  
import org.rut.util.algorithm.SortUtil; PcEE`.  
lyX3'0c  
/** %s"& |32  
* @author treeroot RYA@{.O  
* @since 2006-2-2 !b7"K|  
* @version 1.0 ]VxC]a2  
*/ CxeW5qc  
public class ShellSort implements SortUtil.Sort{ hiBsksZRnk  
GyWa=KW.u  
/* (non-Javadoc) 71\53Qr#U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (bQ3:%nD  
*/ njf\fw_  
public void sort(int[] data) { 'Gqv`rq&  
for(int i=data.length/2;i>2;i/=2){ ;RJ 8h x  
for(int j=0;j insertSort(data,j,i); @`dg:P*[  
} >xabn*Kq  
} 3PGAUQR#"q  
insertSort(data,0,1); _<LL@IX  
} Oo@o$\+v  
i4,p\rE0  
/** chKK9SC+|  
* @param data / n_s"[I4  
* @param j -z~!%4 a  
* @param i Ac|\~w[\  
*/ cd1G.10  
private void insertSort(int[] data, int start, int inc) { <BED&j!qvP  
int temp; ~<f[7dBv  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ^\AeX-q2v'  
} u30D`sky  
} Inv`C,$7Q#  
} ?' .AeoE-  
=K18|Q0m  
} E{&MmrlL,  
!CWe1Dm  
快速排序: xy[#LX)RW  
29,ET}~  
package org.rut.util.algorithm.support; nq]6S$3 6  
Q}|K29Y:p  
import org.rut.util.algorithm.SortUtil; 3y6\0|{1  
Q0Ft.b  
/** X)[tb]U/Wx  
* @author treeroot 8s$6R|ti  
* @since 2006-2-2 |g)C `k  
* @version 1.0 /T)E&=Ds  
*/ a&x:_vv  
public class QuickSort implements SortUtil.Sort{ )^ Y+Vn  
X n$ZA-  
/* (non-Javadoc) R,G*]/r`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9Q%lS  
*/ \"oZ\_  
public void sort(int[] data) { x{SlJ%V  
quickSort(data,0,data.length-1); x_nwD"   
} WJOoDS!i  
private void quickSort(int[] data,int i,int j){ +Cw_qS"=  
int pivotIndex=(i+j)/2;  ~2"hh$  
file://swap )"pvF8JR%3  
SortUtil.swap(data,pivotIndex,j); R~4X?@ZB  
n(J>'Z  
int k=partition(data,i-1,j,data[j]); RyJy%| \-S  
SortUtil.swap(data,k,j); *z?Uh$I4  
if((k-i)>1) quickSort(data,i,k-1); 3$nK   
if((j-k)>1) quickSort(data,k+1,j); o,`"*][wd  
z~pp7  
} Zk%@GOu\  
/** x/umwT,ov  
* @param data Bz/Vzc(  
* @param i yx5e  
* @param j &.,K@OFE}  
* @return zHb [.ry~  
*/ =Z  
private int partition(int[] data, int l, int r,int pivot) { ,2nu*+6Y/  
do{ b$,Hlh,^  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); l~rj7f;  
SortUtil.swap(data,l,r); }_]AQN$'G  
} {h@\C|nF  
while(l SortUtil.swap(data,l,r); HE,L8S  
return l; K:a8}w>Up  
} m!/TJhiQ  
2bNOn%!  
} iPTQqx-m$7  
Hw]E#S  
改进后的快速排序: Ai < beUS  
|6*Bu1  
package org.rut.util.algorithm.support; Tu#;Y."T  
:+,;5  
import org.rut.util.algorithm.SortUtil; = ^NvUrK  
bV8+E u  
/** %xg+UW }  
* @author treeroot \v Ajg  
* @since 2006-2-2 eBrNhE-[G]  
* @version 1.0 D*%am|QL  
*/ ,Z@#( =f  
public class ImprovedQuickSort implements SortUtil.Sort { X_TjJmc  
OoSk^U)  
private static int MAX_STACK_SIZE=4096; KS$t  
private static int THRESHOLD=10; :5NMgR.d  
/* (non-Javadoc) W[8Kia-OD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8)X9abC  
*/ t)zd'[  
public void sort(int[] data) { DXiA4ihr=  
int[] stack=new int[MAX_STACK_SIZE]; ~T1W-ig4[*  
+.V+@!  
int top=-1; -F~DOG%  
int pivot; d. wGO]"  
int pivotIndex,l,r; Tc6cBe,  
IL].!9  
stack[++top]=0; Z+El(f x  
stack[++top]=data.length-1; VL9wRu;  
{]HiTpn  
while(top>0){ =Zq6iMD  
int j=stack[top--]; JI "/,fK^  
int i=stack[top--]; y&NqVR=   
p R'J4~  
pivotIndex=(i+j)/2; )7>GXZG>=  
pivot=data[pivotIndex]; X.fVbePxUU  
4XN \p  
SortUtil.swap(data,pivotIndex,j); Qg*\aa94  
0\dmp'j]  
file://partition "6f`hy  
l=i-1; +/ukS6>gr  
r=j; {@InOo!4w]  
do{ KZppQ0  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); -tg|y  
SortUtil.swap(data,l,r); (9]Uuvfp6"  
} N[I@}j  
while(l SortUtil.swap(data,l,r); XN df  
SortUtil.swap(data,l,j); UBaXS_c\  
]RCo@QW  
if((l-i)>THRESHOLD){ cc[(w #K  
stack[++top]=i; ]Y\$U<YjO  
stack[++top]=l-1; =w$&n%~  
} ,{_i{WV  
if((j-l)>THRESHOLD){ 4\;zz8 5E  
stack[++top]=l+1; O?e9wI=H  
stack[++top]=j; UR sx>yx  
} yLa@27T\A  
Y Zj-%5  
} L/8oqO|  
file://new InsertSort().sort(data); *()['c#CC  
insertSort(data); X1^VdJE  
} TA[%eMvA  
/** cJ4My#w  
* @param data KL&/Yt   
*/ 2 *NPK}  
private void insertSort(int[] data) { ?@b6(f xX  
int temp; h* S"]ye5  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); vzIo2 ,/7  
} S<nF>JRJa  
} l/N<'T_G  
} ZJ/528Ju  
?v2_7x&  
} /q9I^ztV  
gu k,GF9p]  
归并排序: 5|H;%T 3_  
V!Wy[u  
package org.rut.util.algorithm.support; UleT9 [M  
Tv``\<   
import org.rut.util.algorithm.SortUtil; !nBbt?*  
k~tEUsv  
/** ._}}@V_/  
* @author treeroot LqWiw24#  
* @since 2006-2-2 WcN4ff-  
* @version 1.0 :aNjh  
*/ -<g9 ) CV5  
public class MergeSort implements SortUtil.Sort{ (p{X.X+  
7[m+r:y  
/* (non-Javadoc) 0+>g/ >  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7'\. Q J!<  
*/ 'Ea3(OsuXn  
public void sort(int[] data) { Yk Ku4f  
int[] temp=new int[data.length]; n8,%<!F^  
mergeSort(data,temp,0,data.length-1); 2/?Zp=|j\  
} C[^VM$  
7<j!qWm0  
private void mergeSort(int[] data,int[] temp,int l,int r){ #HcQ*BiF3  
int mid=(l+r)/2; iuV4xyp  
if(l==r) return ; i 8sv,P  
mergeSort(data,temp,l,mid); \Id8X`,eD  
mergeSort(data,temp,mid+1,r); b<a3Ue%  
for(int i=l;i<=r;i++){ mA(kq   
temp=data; FQWjL>NB  
} UFB|IeX?q  
int i1=l; V;SfW2`)  
int i2=mid+1; P27Ot1px  
for(int cur=l;cur<=r;cur++){ TK5$-6k  
if(i1==mid+1) K$S0h-?9]O  
data[cur]=temp[i2++]; ~^F]t$rz  
else if(i2>r) |O8e;v72g^  
data[cur]=temp[i1++]; Pp?P9s {  
else if(temp[i1] data[cur]=temp[i1++]; Q7+WV`&  
else KMhrw s{&B  
data[cur]=temp[i2++]; 7ZUN;mr  
} 0F$|`v"0  
} | R,dsBd  
RZz?_1'  
} Il =6t  
fG2)r  
改进后的归并排序: >{^_]phlb  
+R~]5Rxd  
package org.rut.util.algorithm.support; }u^bTR?3  
:DH@zR  
import org.rut.util.algorithm.SortUtil; `gl?y;xC  
!&U75FpN}:  
/**  <$nPGz)}  
* @author treeroot ]TrJ*~  
* @since 2006-2-2 30h[&Oc  
* @version 1.0 Jk.x^  
*/ 8r( Vz  
public class ImprovedMergeSort implements SortUtil.Sort { lO@-*m$  
Vz mlKVE  
private static final int THRESHOLD = 10; ]y OM  
r`"_D%kc  
/* ev&l=(hY  
* (non-Javadoc) Rxy|Ag/I;V  
* kH 9k<{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rVabkwYD  
*/ #c|l|Xvq2  
public void sort(int[] data) { LNL}R[1(  
int[] temp=new int[data.length];  *RY}e  
mergeSort(data,temp,0,data.length-1); 'bfxQ76@sa  
} m0G"Aj  
)=)N9CRy  
private void mergeSort(int[] data, int[] temp, int l, int r) { &^ERaPynd  
int i, j, k; jnV#Q ;  
int mid = (l + r) / 2; Gr({30"8  
if (l == r) q~qz^E\T  
return; sD3Ts;k  
if ((mid - l) >= THRESHOLD) }Z <I%GT  
mergeSort(data, temp, l, mid); 1^k}GXsWmE  
else >D=X Tgqqq  
insertSort(data, l, mid - l + 1); !+$qSD,%x  
if ((r - mid) > THRESHOLD) h x^@aI  
mergeSort(data, temp, mid + 1, r); #o&T$D5  
else P.(UbF d'  
insertSort(data, mid + 1, r - mid); n l5+#e*\  
m#h`iW  
for (i = l; i <= mid; i++) { $I5|rB/4?  
temp = data; &Hw:65O  
} ^aaj=p:c V  
for (j = 1; j <= r - mid; j++) { 4H;g"nWqO  
temp[r - j + 1] = data[j + mid]; -t_&H\_T  
} P#pb48^-  
int a = temp[l]; ^(Gl$GC$Mu  
int b = temp[r]; -Ua5anzB  
for (i = l, j = r, k = l; k <= r; k++) {  WDNj 7  
if (a < b) { |(~IfSE2  
data[k] = temp[i++]; r%: :q^b3  
a = temp; Xp;'Wa"@  
} else { T:j41`g%s  
data[k] = temp[j--]; i(A `'V8GY  
b = temp[j]; <,Gjo]z  
} %YxKWZ/?  
} ['(qeS@5O  
} E.#JCO|(1  
1mV ' ~W  
/** X'd\b}Bm  
* @param data D*L@I@ [  
* @param l nR%w5oe  
* @param i ?r;F'%N=  
*/ K*~xy bA  
private void insertSort(int[] data, int start, int len) { c'$y_]  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 8?~>FLWTXZ  
} SP0ueAa}  
} ^C,rN;mX'  
} i@{b+5$  
} Tu:lIy~A  
ruhC:rg:/  
堆排序: C4E*q3[Y  
D[T\_3 W  
package org.rut.util.algorithm.support; aeMj4|{\  
E:}s 6l  
import org.rut.util.algorithm.SortUtil; Njo.-k  
j+.E#:tu"  
/** BDN}`F[F  
* @author treeroot >>=zkPy  
* @since 2006-2-2 BDp(&=ktq  
* @version 1.0 ddYb=L+_b  
*/ B <Jxj  
public class HeapSort implements SortUtil.Sort{ RCkmxO;b&  
__z/X"H  
/* (non-Javadoc) }2=~7&)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c7rC!v  
*/ +o.#']}Pl  
public void sort(int[] data) { 0>,i] |Y  
MaxHeap h=new MaxHeap(); Kj"n Id)  
h.init(data); iR4"I7J  
for(int i=0;i h.remove(); o/U}G,|G  
System.arraycopy(h.queue,1,data,0,data.length); ='#7yVVcs  
} \hJLa  
M7DoAS{6e  
private static class MaxHeap{ p E1uD4lLb  
*R&77 o7  
void init(int[] data){ Vl7V?`_4  
this.queue=new int[data.length+1]; ^(*eoe  
for(int i=0;i queue[++size]=data; JWt@vf~  
fixUp(size); #,j m3M qj  
} 3&X5*-U  
} %*L8W*V  
,[n=PJVw/  
private int size=0; q:_-#u  
s_u! RrC  
private int[] queue; 0s4]eEXH  
gYL#} )g  
public int get() { &S^a_L:  
return queue[1]; H8c -/  
} y_IF{%i  
BQMo*I>I  
public void remove() { q|.0Ja  
SortUtil.swap(queue,1,size--); h#h)=;  
fixDown(1); ud(w0eX  
} enMHKN g  
file://fixdown wh]v{Fi'  
private void fixDown(int k) { <.|]%7  
int j; -P]onD  
while ((j = k << 1) <= size) { O|;|7fCB\  
if (j < size %26amp;%26amp; queue[j] j++; T.!.3B$@]  
if (queue[k]>queue[j]) file://不用交换 :2L-Nf  
break; 7r3EMX\#Qm  
SortUtil.swap(queue,j,k); <l)I% 1T_c  
k = j; "jq F  
} >+BLD  
} Kn+B):OY+  
private void fixUp(int k) { Xp^71A?>  
while (k > 1) { e<{Ani0  
int j = k >> 1; bmC{d  
if (queue[j]>queue[k]) l%cE o`U  
break; yV@~B;eW0  
SortUtil.swap(queue,j,k); xqVIw!J?/}  
k = j; ;>p{|^X0D  
} uoY]@.  
} Nrp1`qY  
Yv;iduc('  
} 6r5<uZ9w_X  
&-.2P!t  
} -1F+,+m  
9(9\kQj{C  
SortUtil: } AHR7mu=  
Daf;; w  
package org.rut.util.algorithm; &W y9%  
~ Q;qRx  
import org.rut.util.algorithm.support.BubbleSort; l;JB;0<s"  
import org.rut.util.algorithm.support.HeapSort; r^"pLzAx  
import org.rut.util.algorithm.support.ImprovedMergeSort; L6pw'1'  
import org.rut.util.algorithm.support.ImprovedQuickSort; |P=-m-W  
import org.rut.util.algorithm.support.InsertSort; C'z}jM`g  
import org.rut.util.algorithm.support.MergeSort; gDsb~>rb|  
import org.rut.util.algorithm.support.QuickSort; ,3ivB8  
import org.rut.util.algorithm.support.SelectionSort; pu+jw<7  
import org.rut.util.algorithm.support.ShellSort; vB/G#\Zqz  
\R#OJ=F  
/**  cCy*?P@  
* @author treeroot !vSj1w  
* @since 2006-2-2 XCZNvLG  
* @version 1.0 [%6"UH r  
*/ x_KJCU  
public class SortUtil { v+2t;PJd2  
public final static int INSERT = 1; 2HREO@._)  
public final static int BUBBLE = 2; ON3~!Q)  
public final static int SELECTION = 3; >^KO5N-:4  
public final static int SHELL = 4; r7:4| 6E  
public final static int QUICK = 5; bu r0?q  
public final static int IMPROVED_QUICK = 6; &qFy$`"  
public final static int MERGE = 7; Z:%~Al:  
public final static int IMPROVED_MERGE = 8; <bOi}  
public final static int HEAP = 9; $~.'Tnk)  
>BlF< d`X  
public static void sort(int[] data) { ^{fA:N=  
sort(data, IMPROVED_QUICK); 5F|oNI}$:  
} 6M_,4> -  
private static String[] name={ k| ,F/:  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ER$qL"H U  
}; +dSO?Y]  
Xkb\fR6<K  
private static Sort[] impl=new Sort[]{ -Fs<{^E3j  
new InsertSort(), 9r hl2E  
new BubbleSort(), ZC:7N{a  
new SelectionSort(), h}jE=T5Hc  
new ShellSort(), kC-OZVoO  
new QuickSort(), >a2i%j/T  
new ImprovedQuickSort(), Sy`7})[  
new MergeSort(), CrI:TB>/ "  
new ImprovedMergeSort(),  [E|%  
new HeapSort() iwnFCZVS  
}; rXu^]CK *G  
6{PlclI !  
public static String toString(int algorithm){ qm=N@@R&  
return name[algorithm-1]; EAXbbcV  
} vTU*6)  
?T <2Cl'C  
public static void sort(int[] data, int algorithm) { u IGeSd5B  
impl[algorithm-1].sort(data); dBMr%6tz  
} =6:>C9  
J PK( S~  
public static interface Sort { N3g\X  
public void sort(int[] data); 5ki<1{aVtZ  
} KI{B<S3*Z  
h#rziZ(  
public static void swap(int[] data, int i, int j) { +&h<:/ V  
int temp = data; u3ns-e  
data = data[j]; o79EDPX  
data[j] = temp; hV]]%zwR+  
} -9z!fCu3  
} yJAz#~PO/  
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