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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。 ]#x? [ F  
插入排序: m/W)IG>  
'm+)n08[  
package org.rut.util.algorithm.support; c1p*}T  
p)=Fi}#D\  
import org.rut.util.algorithm.SortUtil; H?axlRmw3  
/** {sL(PS.z  
* @author treeroot /S+gh;2OC  
* @since 2006-2-2 w0^T-O`<  
* @version 1.0 z,B'I.)M  
*/ ?yt"  
public class InsertSort implements SortUtil.Sort{ #~^Y2-C#  
hUy\)GsT  
/* (non-Javadoc) 9*}?0J8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n/5)}( }K  
*/ y2eeE CS]  
public void sort(int[] data) { ^g2p!7  
int temp; ,kKMUshBi  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); d`;_~{sleR  
} k;pTOj  
} e'uI~%$NJL  
} PO[ AP%;  
|PED8K:rU  
} +<P%v k  
IU`&h2KZ.  
冒泡排序: wZm=h8d  
3g]Sp/  
package org.rut.util.algorithm.support; ?qt>;o|Ue  
@iwg`j6ol  
import org.rut.util.algorithm.SortUtil; "7pd(p *C  
.^S#h (A  
/** Py[Z9KLX  
* @author treeroot vH+QI  
* @since 2006-2-2 iS^IqS  
* @version 1.0 |8b*BnS  
*/ xhIC["z5  
public class BubbleSort implements SortUtil.Sort{ dkC[Jt  
DM%4 V|F"  
/* (non-Javadoc) 6XO%l0dC.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r~uWr'}a}  
*/ Q2)z1'Wv  
public void sort(int[] data) { ]kuMzTH  
int temp; ttPa[h{!  
for(int i=0;i for(int j=data.length-1;j>i;j--){ q*oUd/F8  
if(data[j] SortUtil.swap(data,j,j-1); ]3C&l+m$ot  
} <[2]p\rj  
} 8#w}wGV*  
} UJ_E&7,L  
} uJ4RjLM`  
E3\O?+ h#  
} RbJ,J)C>  
5Y 4W:S  
选择排序: c_]$UM[7L  
=!'gV:M  
package org.rut.util.algorithm.support; 8]Xwj].^C  
gg(^:`+  
import org.rut.util.algorithm.SortUtil; @O<kjR<b  
*K6 V$_{S  
/** =~% B}T  
* @author treeroot [EDw0e  
* @since 2006-2-2 0sq1SHI{  
* @version 1.0 '!64_OMj'  
*/ =j 6amk-  
public class SelectionSort implements SortUtil.Sort { 93yJAao9  
i8w(G<Y=  
/* &_ Ewu@4  
* (non-Javadoc) R/M:~h~F!  
* `wI<LTzXS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e*e}X&|(g  
*/ :<w3.(Z  
public void sort(int[] data) { l tr =_  
int temp; wh:O"&qk  
for (int i = 0; i < data.length; i++) { .  \ *Z:  
int lowIndex = i; yOGa W~  
for (int j = data.length - 1; j > i; j--) { *usfJ-  
if (data[j] < data[lowIndex]) { I.j`h2  
lowIndex = j; MI|DOp  
} dWE[*a\g  
} eP-q[U?$n  
SortUtil.swap(data,i,lowIndex); n *%<!\gJ  
} ehI*cf({  
} b7{)B?n  
6pI =?g  
} !SIGzj  
1`2n<qo  
Shell排序: b5 YE4h8%  
8zGe5Dn9  
package org.rut.util.algorithm.support; EXg\a#4['  
_CP e  
import org.rut.util.algorithm.SortUtil; Y4}!9x  
Eu\&}n`i  
/** <DiD8")4  
* @author treeroot f .rz2)o  
* @since 2006-2-2 cu]2`DF  
* @version 1.0 ePK^v_vBD  
*/ w`,[w,t  
public class ShellSort implements SortUtil.Sort{ uh%%MhTjv  
(1fE^KF@f  
/* (non-Javadoc) 3k5OYUk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ttb @98  
*/ D|,d_W  
public void sort(int[] data) { "0+_P{w+  
for(int i=data.length/2;i>2;i/=2){ Miqu  
for(int j=0;j insertSort(data,j,i); mKtZ@r)u  
} \i}n1Qd  
} {bl&r?[y  
insertSort(data,0,1); Z,qo jtw  
} lz EF^6I  
bQow,vf  
/** 3 zp)!QJi  
* @param data +,9I3Dq  
* @param j o8BbSZVu  
* @param i ~ d^+yR-  
*/ abuHu'73  
private void insertSort(int[] data, int start, int inc) { kYl$V =  
int temp; J2Ocf&y;  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); y iO!ZT  
} `-fWNHs  
} Z^E>)!t  
} 1AQVj]#S  
fI"sdzu^  
} k>E^FB=  
J9eOBom8e<  
快速排序: pqe7a3jr  
U;`C%vHff  
package org.rut.util.algorithm.support; SQ8xfD*  
.7&V@A7  
import org.rut.util.algorithm.SortUtil; /N= }wC  
E! d?@Xr@  
/** 7]W6\Z  
* @author treeroot 2t 6m#  
* @since 2006-2-2 )Tjh  
* @version 1.0 /By:S/[1pL  
*/ >*s_)IH2  
public class QuickSort implements SortUtil.Sort{ zU7co.G  
jq%%|J.x  
/* (non-Javadoc) ~MWI-oK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ln:6@Ok)5%  
*/ ?M!Mb-C[  
public void sort(int[] data) { & "i4og<  
quickSort(data,0,data.length-1); "uCO?hv0  
} 2[|52+zhc  
private void quickSort(int[] data,int i,int j){ m%zo? e  
int pivotIndex=(i+j)/2; T_R2BBT v  
file://swap i(T[  
SortUtil.swap(data,pivotIndex,j); ~,ZU+  
]1hyvm3  
int k=partition(data,i-1,j,data[j]); e}dGK=`  
SortUtil.swap(data,k,j); ( jACLo  
if((k-i)>1) quickSort(data,i,k-1); YI+ clh;%9  
if((j-k)>1) quickSort(data,k+1,j); L~oy|K67  
m`i_O0T  
} V>Dqw!  
/** H9;0$Y(e-  
* @param data yY[9\!  
* @param i Hlhd6be  
* @param j nQGl]2  
* @return /RVwhA+c  
*/ U#V&=~-  
private int partition(int[] data, int l, int r,int pivot) { Tp46K\}Uf  
do{ 9|D*}OY>  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 5(zdM)Y7  
SortUtil.swap(data,l,r); |d$4Fu(M~  
} r7)qr%n  
while(l SortUtil.swap(data,l,r); 3r VfBz  
return l; IOA2/ WQu  
} *+OS;R1<  
f=k_U[b4>  
} {V,aCr  
F f{,zfN+3  
改进后的快速排序: zu3Fi = |0  
K| dI'TnW  
package org.rut.util.algorithm.support; +7\d78U  
<Y]e  
import org.rut.util.algorithm.SortUtil; 7}:+Yx  
l+#J oc<8  
/** WNY:HH  
* @author treeroot y2W|,=Vd  
* @since 2006-2-2 rD+mI/_J`  
* @version 1.0 IM% ,A5u  
*/ Q,K$)bM  
public class ImprovedQuickSort implements SortUtil.Sort { W#)X@TlE  
e2e!"kEF  
private static int MAX_STACK_SIZE=4096; ,,SV@y;  
private static int THRESHOLD=10; +4$][3.  
/* (non-Javadoc) mC0_rN^Aj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Fc#Sn2p*  
*/ ?3lA ogB  
public void sort(int[] data) { T>f6V 5  
int[] stack=new int[MAX_STACK_SIZE]; G6QD`ED  
l A%FS]vh  
int top=-1; lE gjv,  
int pivot; Jz}`-fU`  
int pivotIndex,l,r; SJ91(K  
zYrJ Hn#vB  
stack[++top]=0; /GVjesN  
stack[++top]=data.length-1; 0-~s0R89A  
gu6%$z  
while(top>0){ ),CKuq>  
int j=stack[top--]; RIQ-mpg~(k  
int i=stack[top--]; I_5/e> 9  
CY*o"@-o5)  
pivotIndex=(i+j)/2; 4Q/{lqG  
pivot=data[pivotIndex]; tKS[  
4(*PM&'R  
SortUtil.swap(data,pivotIndex,j); 9dw* ++  
D2g/P8.<A  
file://partition "={*0P  
l=i-1; /o%VjP"<  
r=j; 81"` B2  
do{ ?"*JV1 9  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 5F+G8  
SortUtil.swap(data,l,r); d#TA20`  
} aZ$5"  
while(l SortUtil.swap(data,l,r); 5D.Sg;\  
SortUtil.swap(data,l,j); }tw+8YWkz  
^*i0~_  
if((l-i)>THRESHOLD){ P3`$4p?  
stack[++top]=i; 7UY4* j|[C  
stack[++top]=l-1; s;YbZ*oaMe  
} UOsK(mB  
if((j-l)>THRESHOLD){ =Q{?!  
stack[++top]=l+1; rrr_{d/  
stack[++top]=j; a _+?#m  
} ]iGeqwT  
~uH_y-  
} g0bYO!gC r  
file://new InsertSort().sort(data); nj0sh"~+  
insertSort(data); 9Q^cE\j  
} Bcarx<P-p  
/** 'UUj(1 f  
* @param data %s"& |32  
*/ $%q=tn'EX  
private void insertSort(int[] data) { BGBHA"5fz  
int temp; HO['o{>BL  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); I-Z|FKh_C  
} g\fj6  
} GyWa=KW.u  
} 2?GMKd)  
p09p/  
} 'St6a*  
:u./"[G  
归并排序: 7]xDMu'^&f  
\?>M?6D  
package org.rut.util.algorithm.support; C=V2Y_j  
7M~sol[*  
import org.rut.util.algorithm.SortUtil; VK]U*V1  
e ~'lWJD  
/** *9"x0bth  
* @author treeroot cu($mjC@T  
* @since 2006-2-2 E Izy  
* @version 1.0 ;5bd<N  
*/ itP`{[  
public class MergeSort implements SortUtil.Sort{ Cl`i|cF\  
s 91[@rh/  
/* (non-Javadoc) {?eUAB<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I7oA7@zv  
*/ [p9v#\G; [  
public void sort(int[] data) { s{Y4wvQyB  
int[] temp=new int[data.length]; VwE4:/7YN  
mergeSort(data,temp,0,data.length-1); 0mujf  
} d]] z )  
#dj?^n g  
private void mergeSort(int[] data,int[] temp,int l,int r){ ^" X.aksA  
int mid=(l+r)/2; "vSKj/]  
if(l==r) return ; Fs(PVN  
mergeSort(data,temp,l,mid); Sy|GM~  
mergeSort(data,temp,mid+1,r); ZrTB%  
for(int i=l;i<=r;i++){ ^iMr't\b  
temp=data; qK a}O*  
} )pH+ibR  
int i1=l; 1j$\ 48Z  
int i2=mid+1; ]a4U\yr  
for(int cur=l;cur<=r;cur++){ ^obuMQ;  
if(i1==mid+1) Lj3o-@\*j  
data[cur]=temp[i2++]; x/umwT,ov  
else if(i2>r) >\ Dy  
data[cur]=temp[i1++]; &.,K@OFE}  
else if(temp[i1] data[cur]=temp[i1++]; A/>Q5)  
else N s+g9+<A  
data[cur]=temp[i2++]; ;Z d_2CZ  
} qT@h/Y  
} ^ ~Eh+  
e{5?+6KH  
} 4w^o !  
sQa;l]O:NC  
改进后的归并排序: ^m w]u"5\  
Hw]E#S  
package org.rut.util.algorithm.support; ;7lON-@BI  
|6*Bu1  
import org.rut.util.algorithm.SortUtil; TVD~Ix  
'RMUjJ-!  
/** =\oH= f  
* @author treeroot &J6`Q<U!  
* @since 2006-2-2 Mj MDD  
* @version 1.0 ^HSxE  
*/ bQt:=>  
public class ImprovedMergeSort implements SortUtil.Sort { @'R)$:I%L  
]nhh|q9r{  
private static final int THRESHOLD = 10; N `|A  
EL?(D  
/* *p}mn#ru-  
* (non-Javadoc) R |c=I }@F  
* DXiA4ihr=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JN0h3nZ_  
*/ 1Z# $X`  
public void sort(int[] data) { hC<ROD  
int[] temp=new int[data.length]; d05xn7%!{  
mergeSort(data,temp,0,data.length-1); jSY[Y:6md  
} Zhq_ pus"a  
P8d  
private void mergeSort(int[] data, int[] temp, int l, int r) {  ,&hv x  
int i, j, k; ,9P-<P  
int mid = (l + r) / 2; rOSov"7  
if (l == r) }>xwiSF?  
return; "I.6/9  
if ((mid - l) >= THRESHOLD) 9F/I",EA  
mergeSort(data, temp, l, mid);  =}`d  
else +:FXtO>n"  
insertSort(data, l, mid - l + 1); 2Vx4"fHP#N  
if ((r - mid) > THRESHOLD) b>07t!;  
mergeSort(data, temp, mid + 1, r); <Vhd4c  
else {*yvvb  
insertSort(data, mid + 1, r - mid); hd)Jq'MCS  
F9r.DG$}  
for (i = l; i <= mid; i++) { X1^VdJE  
temp = data; (T%F^s5D  
} cJo%j -AM  
for (j = 1; j <= r - mid; j++) { OIblBQ!  
temp[r - j + 1] = data[j + mid]; h* S"]ye5  
} $Rm~ VwY#  
int a = temp[l]; tu -a`h_NJ  
int b = temp[r]; *S;}&VAZ  
for (i = l, j = r, k = l; k <= r; k++) { /q9I^ztV  
if (a < b) { @>8(f#S%  
data[k] = temp[i++]; ,!:c6F+  
a = temp; @;/Pl>$|'G  
} else { hi8q?4jE  
data[k] = temp[j--]; W:r[o%B  
b = temp[j]; <o(;~  
} C>Ik ;  
} S2$E`' J  
} !M~:#k  
,?GwA@~$k:  
/** [DaAvN^0A  
* @param data fCY|iO0.t  
* @param l N^;lp<{6?  
* @param i gT)(RS`_)  
*/ uKJ:)oyaCP  
private void insertSort(int[] data, int start, int len) { Ic/hVKYG5  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); SyL"Bmi  
} 9)!Ks g(h  
} KXPCkNIN!  
} UFB|IeX?q  
} )PN8HJAArh  
v `S5[{6  
堆排序: TK5$-6k  
4&*lpl*N  
package org.rut.util.algorithm.support; FWW4n_74  
:,8y8z$+  
import org.rut.util.algorithm.SortUtil; KMhrw s{&B  
 Q6 *n'6  
/** | R,dsBd  
* @author treeroot  4!!|P  
* @since 2006-2-2 2"6L\8hd2  
* @version 1.0 &GH [$(  
*/ }u^bTR?3  
public class HeapSort implements SortUtil.Sort{ A[P7hMn  
yCjc5d|tT  
/* (non-Javadoc) AH,?B*zGj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 30h[&Oc  
*/ Ec7xwPk  
public void sort(int[] data) { lO@-*m$  
MaxHeap h=new MaxHeap(); dX?j /M-  
h.init(data); 2^XmtT  
for(int i=0;i h.remove(); NZGO8u  
System.arraycopy(h.queue,1,data,0,data.length); kH 9k<{  
} 7] y3<t  
S1r{2s&  
private static class MaxHeap{ Gb^63.}  
)QAYjW!Z  
void init(int[] data){ xbiprhdv  
this.queue=new int[data.length+1]; tN{0C/B9  
for(int i=0;i queue[++size]=data; 2?,l r2  
fixUp(size); hTBJ\1 -  
} q;SD+%tI  
} [)`*k#.=  
rbf5~sw&8+  
private int size=0; 6Emn@Mn=  
k2Q[v  
private int[] queue; n l5+#e*\  
puOMtCI  
public int get() { MKtI 3vi?  
return queue[1]; 3g7]$}  
} ceg\lE:8  
z{R Mb  
public void remove() { Z@q1&}D!  
SortUtil.swap(queue,1,size--); 0,0WdJAe  
fixDown(1); e\z,^  
} I>ML I=[Kg  
file://fixdown [?z;'O}y  
private void fixDown(int k) { bP:u`!p -i  
int j; e ,XT(KY  
while ((j = k << 1) <= size) { ~ &/Nl_#  
if (j < size %26amp;%26amp; queue[j] j++; (fc_V[(m"  
if (queue[k]>queue[j]) file://不用交换 ;4+z~7Je]^  
break; o5],c9R9b  
SortUtil.swap(queue,j,k); hj=n;,a9  
k = j; 1sUgjyGQ  
} %4VM"C4[  
} .t ^1e  
private void fixUp(int k) { YloE4PAY7  
while (k > 1) { + fvVora  
int j = k >> 1; CS%ut-K<5M  
if (queue[j]>queue[k]) i{g~u<DH)Q  
break; dnANlNMk?  
SortUtil.swap(queue,j,k); 9 Eh*r@>  
k = j; VU\G49  
} *`s*l+0b  
} 1% @i4  
;&b=>kPlZ  
} a;i} <n7  
o &b\bK%E  
} ]_>38f7h  
jcePSps]  
SortUtil: h\C1:0x{  
R]Fa?uQW  
package org.rut.util.algorithm; s$^ 2Cuhv  
_)CCD33$  
import org.rut.util.algorithm.support.BubbleSort; Nj;(QhYZ  
import org.rut.util.algorithm.support.HeapSort; L#Ve [  
import org.rut.util.algorithm.support.ImprovedMergeSort; }Ej^"T:H_;  
import org.rut.util.algorithm.support.ImprovedQuickSort; lz).=N}m  
import org.rut.util.algorithm.support.InsertSort; 7vqE @;:dt  
import org.rut.util.algorithm.support.MergeSort; +5ql`C  
import org.rut.util.algorithm.support.QuickSort; =+e;BYD#!  
import org.rut.util.algorithm.support.SelectionSort; uL-$^],  
import org.rut.util.algorithm.support.ShellSort; V" 5rIk  
+SFo2Wdr43  
/** rp-.\Hl/a  
* @author treeroot Zf)<)o*  
* @since 2006-2-2 FOa2VP%  
* @version 1.0 O|;|7fCB\  
*/ Dk~ JH9#  
public class SortUtil { `?N|{kb  
public final static int INSERT = 1; yX\~ {%  
public final static int BUBBLE = 2; r^d:Po  
public final static int SELECTION = 3; ~\R+p~>  
public final static int SHELL = 4; !O,`Z`T?  
public final static int QUICK = 5; %yy|B  
public final static int IMPROVED_QUICK = 6; \p izVt  
public final static int MERGE = 7; 7*&q"   
public final static int IMPROVED_MERGE = 8; EU7mP MxJ  
public final static int HEAP = 9; ECOzquvM  
XQ k ,xQ  
public static void sort(int[] data) { &-.2P!t  
sort(data, IMPROVED_QUICK); $8_b[~%2  
} 7baQ4QY?n  
private static String[] name={ 9H%L;C5<  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 2)`4(38  
}; 6$+F5T  
3}?]G8iL?L  
private static Sort[] impl=new Sort[]{ z!9w Lo^r  
new InsertSort(), gDsb~>rb|  
new BubbleSort(), ;x=0+0JD  
new SelectionSort(), vB/G#\Zqz  
new ShellSort(), a/ Z\h{*  
new QuickSort(), #c1c%27cmm  
new ImprovedQuickSort(), f,Dj@?3+  
new MergeSort(), i\k>2df  
new ImprovedMergeSort(), &FzZpH  
new HeapSort() ]OA8H[U-eA  
}; %,5_]bGvb  
.{#J2}+[_}  
public static String toString(int algorithm){ TqXB2`7Ri  
return name[algorithm-1]; RS[QZOoW}  
} n#5%{e>  
m:{IVvN_  
public static void sort(int[] data, int algorithm) { &Ukh  
impl[algorithm-1].sort(data); h.h\)>DM@  
} #ANbhHG  
|`6*~ciUV  
public static interface Sort { LZ#SX5N  
public void sort(int[] data); DlbNW& V  
} 4Q(GX.5  
8d"Ff  
public static void swap(int[] data, int i, int j) { z0-`D.D@\  
int temp = data; ^NiS7)FX  
data = data[j]; b$1W>  
data[j] = temp; LYyOcb[x  
} -eoXaP{[  
} ]eZrb%B .  
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