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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。 gA_oJW4_  
插入排序: n%\\1  
K!(WcoA&2i  
package org.rut.util.algorithm.support; o$->|k  
 8zRw\]?  
import org.rut.util.algorithm.SortUtil; 8?m=Vw<kIZ  
/** ubZuvWZ  
* @author treeroot 65@GXn[W_  
* @since 2006-2-2 >Giw\|:f(  
* @version 1.0 jxW/"Q   
*/ )IK%Dg(v  
public class InsertSort implements SortUtil.Sort{ E)Qg^DHP/  
 h8p{  
/* (non-Javadoc) q2|z \  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JcP<@bb>B  
*/ HL[V}m  
public void sort(int[] data) { S.iUiS"  
int temp; `ba<eT':  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); >o p/<?<  
} Vm@VhCsp  
} X`v6gv5qj  
} (/&ht-~EL  
Q ijO%)  
} Qu<HeSA_  
8Rw:SU9H?T  
冒泡排序: zN9@.!?X2  
\QSD*  
package org.rut.util.algorithm.support; ~ cu+QR)  
c uAp,!  
import org.rut.util.algorithm.SortUtil; K4NzI9@  
J+0 ?e9  
/** M{u7Ef  
* @author treeroot  `m_f i  
* @since 2006-2-2 |1!|SarM{B  
* @version 1.0 ;CL^2{  
*/ 8zeD%Uv  
public class BubbleSort implements SortUtil.Sort{ V#1v5mWVx  
LM"b%  
/* (non-Javadoc) j _E(h.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |C+ 5  
*/ KVoi>?a   
public void sort(int[] data) { %^I 7=  
int temp; R. ryy  
for(int i=0;i for(int j=data.length-1;j>i;j--){ P:'y}a-  
if(data[j] SortUtil.swap(data,j,j-1); <;b  
} 7~MWp4.   
} ByWad@-6i  
} tx3p, X  
} ;F,6]LH!  
-jTK3&5  
} >i1wB!gc8  
k ;vOPcw  
选择排序: [daR)C  
LWM& k#i  
package org.rut.util.algorithm.support; 86&r;c:  
`i!-@WN"  
import org.rut.util.algorithm.SortUtil; Q3)[ *61e  
E9 #o0Di  
/** 1U~'8=-   
* @author treeroot hoPh#? G  
* @since 2006-2-2 $:D L+E-}  
* @version 1.0 0B`rTLwB  
*/ _#P5j#  
public class SelectionSort implements SortUtil.Sort { eBECY(QMQ  
g2r8J0v  
/* =o"sBVj  
* (non-Javadoc) %HZ!s `w_  
* X~; *zYd5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;P|v'NNI  
*/ 5= MM^$QG  
public void sort(int[] data) { oFGgr2Re  
int temp; : SD3  
for (int i = 0; i < data.length; i++) { 6Vu??qBy  
int lowIndex = i; @yPI$"Ma  
for (int j = data.length - 1; j > i; j--) { V3pn@'pr  
if (data[j] < data[lowIndex]) { =8qhK=&]  
lowIndex = j; Mr K?,7*Xi  
} ^dhtc% W>  
} \w{fq+G  
SortUtil.swap(data,i,lowIndex); $/JnYkL{m  
} oB}rd9  
} \HJt}  
G!ryW4  
} 4~:D7",Jn  
s.}:!fBk  
Shell排序: {-5 b[m(  
Zf\It<zT5  
package org.rut.util.algorithm.support; a)L=+Z  
yF&?gPh&  
import org.rut.util.algorithm.SortUtil; K)8 m?sf/  
v[ y|E;B  
/** E"H> [E  
* @author treeroot !jJH}o/KW  
* @since 2006-2-2 fAR0GOI  
* @version 1.0 TlBu3z'P  
*/ z1~U#  
public class ShellSort implements SortUtil.Sort{ Q# $dp  
T^ah'WmNw  
/* (non-Javadoc) ZZ;V5o6E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o|a]Q  
*/ 1T7;=<g`  
public void sort(int[] data) { fNi_C"<  
for(int i=data.length/2;i>2;i/=2){ K* 0]*am|v  
for(int j=0;j insertSort(data,j,i); m4T` Tg#P  
} nr9c G/"  
} k{$Mlt?&-  
insertSort(data,0,1); w~9=6|_  
} {I_I$x_  
m`ab5<%Gn  
/** (V~PYf%  
* @param data |a Ht6F  
* @param j W r;?t!  
* @param i X=OJgyO/  
*/ 9ev " BO  
private void insertSort(int[] data, int start, int inc) { B,dKpz;kFg  
int temp; rU1{a" {  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); qg@Wzs7c~  
} =G2A Ufn   
} 1G+ ?/w  
} $lrq*Nf9c  
jG3i )ALx  
} NCysYmt  
PizPsJ|&  
快速排序: vN4g#,<  
@oL<Ioh  
package org.rut.util.algorithm.support; 7e-l`]  
^E8eW  
import org.rut.util.algorithm.SortUtil; DV/P/1E  
4 p(KdYc  
/** pb5'5X+  
* @author treeroot ]jS+ItL@  
* @since 2006-2-2 ojitBo~  
* @version 1.0 BqKh&m  
*/ U= PG0  
public class QuickSort implements SortUtil.Sort{ Gv}h/zu-  
3E361?ubM  
/* (non-Javadoc) Ci ? +Sl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r'q9N  
*/ i'%:z]hp9  
public void sort(int[] data) { ~T[m{8uh  
quickSort(data,0,data.length-1); xe6 2gaT  
} MW+]w~7_Q  
private void quickSort(int[] data,int i,int j){ tXTa>Q  
int pivotIndex=(i+j)/2; lLT;V2=osX  
file://swap { O*maE"  
SortUtil.swap(data,pivotIndex,j); HJ*W3Mg  
* 5#Y [c  
int k=partition(data,i-1,j,data[j]); i-E~ZfJ  
SortUtil.swap(data,k,j); (k..ll p~  
if((k-i)>1) quickSort(data,i,k-1); )S|}de/a2  
if((j-k)>1) quickSort(data,k+1,j); H{P"$zj`l  
)nS;]7pB@  
} Hdh'!|w  
/** NTVdSK7z~H  
* @param data V< @]Iv  
* @param i xXu/CGzG  
* @param j 4+`<'t]Q  
* @return S0~F$mP'  
*/ dOe|uQXyD  
private int partition(int[] data, int l, int r,int pivot) { ?K/z`E!xhN  
do{ :r[`bqC;\*  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); fV_(P_C  
SortUtil.swap(data,l,r); Dg@>d0FW  
} ;ePmN|rq;  
while(l SortUtil.swap(data,l,r); C``%<)WC  
return l; 13Ee"r  
} B" wk:\zC  
xU^Flw,4  
} Kl$!_$  
r 8,6qP[  
改进后的快速排序: d3(T=9;f2  
SN'LUwaMp!  
package org.rut.util.algorithm.support; oZ@_o3VG  
!+T+BFw.  
import org.rut.util.algorithm.SortUtil; atFj Vk^  
>"S'R9t  
/** 5sx-u!7  
* @author treeroot -[x^z5Ee`  
* @since 2006-2-2 hsljJvs  
* @version 1.0 lBL;aTzo  
*/ ^c^9kK'  
public class ImprovedQuickSort implements SortUtil.Sort { 9QI\[lT&  
Vrf` :%  
private static int MAX_STACK_SIZE=4096; rsvZi1N4w$  
private static int THRESHOLD=10; (9$/r/-a  
/* (non-Javadoc) a)[XJLCQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w-|i8%X  
*/ BJk\p.BVN  
public void sort(int[] data) { {`~{%2ayq7  
int[] stack=new int[MAX_STACK_SIZE]; * KFsO1j  
Lqbu]  
int top=-1; >u~ [{(d ,  
int pivot; _pKW($\  
int pivotIndex,l,r; ZQnJTS+Rd  
%dS7u$Rnh  
stack[++top]=0; W==HV0n  
stack[++top]=data.length-1; F1)Q#ThF\  
7 4aap2^  
while(top>0){ ?'$=G4y&?  
int j=stack[top--]; W UdKj  
int i=stack[top--]; yK0Q,   
Lz=nJn  
pivotIndex=(i+j)/2; }vxb, [#  
pivot=data[pivotIndex]; <h U ZD;  
-^$CGRE6A  
SortUtil.swap(data,pivotIndex,j); McxJ C<  
23y7l=.b/  
file://partition DhY9)>4M  
l=i-1; o]}b#U8S  
r=j; =q^o6{d0"  
do{ |I7P 0JqP  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Yiu)0\ o  
SortUtil.swap(data,l,r); ,<|EoravH  
} q!""pr<n  
while(l SortUtil.swap(data,l,r); dj?.Hc7od  
SortUtil.swap(data,l,j); vf~q%+UqK  
o]MQ)\ r  
if((l-i)>THRESHOLD){ aAwnkQ$  
stack[++top]=i; >('L2]4\v  
stack[++top]=l-1; @+ Berb  
} U-3KuR+0  
if((j-l)>THRESHOLD){  ~ceGx  
stack[++top]=l+1; }&rf'E9  
stack[++top]=j; lV`y6{o#T  
} M$%aX,nk'  
.-`7Av+7  
} 5xLuuKG  
file://new InsertSort().sort(data); Z=R>7~H  
insertSort(data); EZIMp8^  
} B HoZ}1_  
/** - CT?JB  
* @param data HG=!#-$9  
*/ }N2T/U  
private void insertSort(int[] data) { C n\'sb{  
int temp; -q(,}/Xf  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); A<9ZX=DAjw  
} H=Yl @  
} !z(POK  
} k2<VUeW5  
=o{zw+|% %  
} Qgo0uu M  
"] kaaF$U%  
归并排序: e0j*e7$  
bX|Z||img  
package org.rut.util.algorithm.support; +X cB5S>  
+To{Tm-  
import org.rut.util.algorithm.SortUtil; Nypa,_9}  
jf*M}Q1jHE  
/** GLnj& Ve  
* @author treeroot RQ9fA1YP  
* @since 2006-2-2 :~ zK0v"  
* @version 1.0 /]F3t]FlC  
*/ Gow_a'  
public class MergeSort implements SortUtil.Sort{ IA$:r@QNx8  
]*%0CDY6`N  
/* (non-Javadoc) Ga.a"\F.V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ) (PA:j  
*/ -zN*2T  
public void sort(int[] data) { d01bt$8>  
int[] temp=new int[data.length]; e DX{}Dq(  
mergeSort(data,temp,0,data.length-1); TN.mNl%  
} 'r(}7>~fC  
rVt6tx  
private void mergeSort(int[] data,int[] temp,int l,int r){ \uQ(-ji  
int mid=(l+r)/2; 9{'GrL  
if(l==r) return ; u~bk~ 3.I  
mergeSort(data,temp,l,mid); "sUL"i  
mergeSort(data,temp,mid+1,r); *-3K],^a  
for(int i=l;i<=r;i++){ }/SbmW8(1  
temp=data; a7%5Qg9B;  
} nP0|nPWz#  
int i1=l; O<Ht-TN&  
int i2=mid+1; c,!Ijn\;(  
for(int cur=l;cur<=r;cur++){ )f*&}SV  
if(i1==mid+1) $*H_0wQc  
data[cur]=temp[i2++]; pLDseEr<  
else if(i2>r) {" Van,w  
data[cur]=temp[i1++]; QyJ}zwD  
else if(temp[i1] data[cur]=temp[i1++]; ucL}fnY1  
else .,o=#  
data[cur]=temp[i2++];  J5*krH2i  
}  pzg|?U  
} sn@gchO9s  
r[q-O&2&  
} QPg QM6  
O:{I9V-=>s  
改进后的归并排序: k_ UY^vz.  
Ra%RcUf~sh  
package org.rut.util.algorithm.support; 8l~] }2LAs  
ltwX-   
import org.rut.util.algorithm.SortUtil; aiF7\^aw$  
-ce N}Cb3  
/** .Quu_S_ vH  
* @author treeroot g`d5OHvO o  
* @since 2006-2-2 ; "ux{ .  
* @version 1.0 =;l .<{<VH  
*/ /[q6"R!uMz  
public class ImprovedMergeSort implements SortUtil.Sort { mHM38T9C%  
=$X5O&E3'  
private static final int THRESHOLD = 10; Oq7M1|{  
"n^h'// mn  
/* WJ<nc+/v:  
* (non-Javadoc) _<6 ^r  
* |cEJRs@B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3%bCv_6B  
*/ yAy~|1}  
public void sort(int[] data) { |F=!0Id<  
int[] temp=new int[data.length]; 9E'fM  
mergeSort(data,temp,0,data.length-1); (+`pEDD{X  
} ` .|JTm[  
|L}zB,  
private void mergeSort(int[] data, int[] temp, int l, int r) { ~Z9Eb|B  
int i, j, k; VUpa^R  
int mid = (l + r) / 2; .vE=527g)  
if (l == r) Hbu8gqu  
return; 4nK\gXz19  
if ((mid - l) >= THRESHOLD) 5%BexIk  
mergeSort(data, temp, l, mid); Ls< ";QJc  
else  J -tOO  
insertSort(data, l, mid - l + 1); #tg,%*.s  
if ((r - mid) > THRESHOLD) UCG8=+t5T  
mergeSort(data, temp, mid + 1, r); V T8PV5z  
else gqV66xmJ3  
insertSort(data, mid + 1, r - mid); B>Tfyo  
-sO[,  
for (i = l; i <= mid; i++) { ZG[P?fM  
temp = data; "O{j}QwY  
} t5t,(^;f  
for (j = 1; j <= r - mid; j++) { $mdmuUIy-3  
temp[r - j + 1] = data[j + mid]; TRP#b 7nC  
} +`tl<r g;  
int a = temp[l]; %J(y2 }  
int b = temp[r]; .1n=&d|  
for (i = l, j = r, k = l; k <= r; k++) { 8XJg  
if (a < b) { '!eg9}<  
data[k] = temp[i++]; B7 PkCS&X  
a = temp; =1Nz* c  
} else { aF*KY<w  
data[k] = temp[j--]; sB!#`kh  
b = temp[j]; o>WB,i^G  
} <Qg).n>;z  
} 8(-V pU  
} ffoL]u\  
<A|X4;  
/** YnM&t ;TX  
* @param data w-iu/|}  
* @param l < z':_,  
* @param i V"Cx5#\7C  
*/ O[}{$NXw  
private void insertSort(int[] data, int start, int len) { zs/4tNXw  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); `+DH@ce  
} h?_Cv*0q  
} `HVS}}{a  
} J]&^A$  
} :j(e+A1@  
R[_Q}W'HG  
堆排序: (~>uFH  
=MR.*m{  
package org.rut.util.algorithm.support; MoAie|MKe  
jr/  
import org.rut.util.algorithm.SortUtil; #(@!:f1  
z$g cK>@l  
/** !8g419Yg  
* @author treeroot ?^Gi;d5  
* @since 2006-2-2 rU6F$I=  
* @version 1.0 C@x\ZG5rA  
*/ gB7kb$J  
public class HeapSort implements SortUtil.Sort{ jej.!f:H  
~[8n+p+&X  
/* (non-Javadoc) rR Kbs@1M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CzMCd ~*7R  
*/ 0gRj3al(  
public void sort(int[] data) { 8Z&M}Llk  
MaxHeap h=new MaxHeap(); mJxr"cwHl  
h.init(data); ak,KHA6u  
for(int i=0;i h.remove(); Borr  
System.arraycopy(h.queue,1,data,0,data.length); TWzlF>4N  
} J`6IH#54  
_+!@c6k)ra  
private static class MaxHeap{ ./ ]xn  
gB _/(  
void init(int[] data){ n?KhBJx 4  
this.queue=new int[data.length+1]; epicY  
for(int i=0;i queue[++size]=data; Cn"_x  
fixUp(size); 1Kjqs)p^  
} (rmOv\hG9V  
} }VU^ 8D  
C/$bgK[ev  
private int size=0; s5bqS'%  
3_bE12  
private int[] queue; ZLjEH7  
awXK9}.  
public int get() { +3yG8  
return queue[1]; L@5sY0 M  
} }SfS\b{|~  
W [*Go  
public void remove() { c,2OICj  
SortUtil.swap(queue,1,size--); OV G|WC  
fixDown(1); 4s s 4O  
} {MRXK nm;e  
file://fixdown zRU9Q 2Y  
private void fixDown(int k) { ^h$^j  
int j; !>:SPt l  
while ((j = k << 1) <= size) { <x8I<K  
if (j < size %26amp;%26amp; queue[j] j++; X-=4Z9  
if (queue[k]>queue[j]) file://不用交换 3F?7oMNIh  
break; z!M #   
SortUtil.swap(queue,j,k); I4|LD/b  
k = j; jn 5v  
} aD(3.=[R  
} KuRJo]  
private void fixUp(int k) { /78zs-  
while (k > 1) { &6^ --cc  
int j = k >> 1; oVTXn=cYDp  
if (queue[j]>queue[k]) E^iShe  
break; C'y4 ~7  
SortUtil.swap(queue,j,k); J$W4AT  
k = j; T@Bu Fr`]<  
} _Sg"|g  
} gSa!zQN6  
{/FdrS  
} >\!G43Q=  
/Rf,Rjs  
} (@1>G ^%  
CnpQdI  
SortUtil: fsl ZJE  
%[4u #G`  
package org.rut.util.algorithm;  >akC  
ur:8`+" (  
import org.rut.util.algorithm.support.BubbleSort; _l"=#i@L  
import org.rut.util.algorithm.support.HeapSort; vM@8&,;  
import org.rut.util.algorithm.support.ImprovedMergeSort; vX7U|zy  
import org.rut.util.algorithm.support.ImprovedQuickSort; ;reBJk  
import org.rut.util.algorithm.support.InsertSort; J-|&[-Z  
import org.rut.util.algorithm.support.MergeSort; 4@+']vN4  
import org.rut.util.algorithm.support.QuickSort; }S$OE))u  
import org.rut.util.algorithm.support.SelectionSort; YV8PybThc  
import org.rut.util.algorithm.support.ShellSort; 3ey.r%n  
cL<,]%SkE  
/** X }`o9]y  
* @author treeroot xnC:?d  
* @since 2006-2-2 @Di!~e6  
* @version 1.0 AdpJ4}|0  
*/ V'tqsKQ!  
public class SortUtil { ~ulcLvm:i  
public final static int INSERT = 1; 67;6nXG0K  
public final static int BUBBLE = 2; l^XOW- ;u  
public final static int SELECTION = 3; No8-Hm  
public final static int SHELL = 4; ,(RpBTV  
public final static int QUICK = 5; (wFoI}s  
public final static int IMPROVED_QUICK = 6; 27+~!R~Yw  
public final static int MERGE = 7; P5H_iH  
public final static int IMPROVED_MERGE = 8; ]h#QA;   
public final static int HEAP = 9; T, +=ka$  
 &1f3e  
public static void sort(int[] data) { aNn4j_V(  
sort(data, IMPROVED_QUICK); UGlHe7  
} 76o3Sge:  
private static String[] name={ 7|o!v);uR  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" k*u6'IKi.4  
}; ~F53{qxV  
l}iQ0v@  
private static Sort[] impl=new Sort[]{ 3GNcnb  
new InsertSort(), 2cO6'?b  
new BubbleSort(), 1S(n3(KRk$  
new SelectionSort(), H+562W  
new ShellSort(), #sg*GK+|:R  
new QuickSort(), Yi]`"\  
new ImprovedQuickSort(), .hM t:BMf*  
new MergeSort(), E]v]fy"  
new ImprovedMergeSort(), /N({"G'  
new HeapSort() ySB0"bl  
}; c^O&A\+;  
@eZBwFe  
public static String toString(int algorithm){ qX`Hi9ja  
return name[algorithm-1]; Y]=k"]:%  
} aM xd"cTzx  
UdVf/ PGx  
public static void sort(int[] data, int algorithm) { [!>9K}z,=  
impl[algorithm-1].sort(data); f~*7hv\  
} `dD_"Hdt  
-uu&{$  
public static interface Sort { FW5v 1s=  
public void sort(int[] data); W"*2,R[}%  
}  H2oxD$s  
!-N!Bt8;  
public static void swap(int[] data, int i, int j) { qe'ssX;  
int temp = data; &]Uo>Gb3!q  
data = data[j]; MD*dq  
data[j] = temp; m?; ?I]`  
} >&Oql9_  
} eM 5#L,Y{  
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