社区应用 最新帖子 精华区 社区服务 会员列表 统计排行 社区论坛任务 迷你宠物
  • 6414阅读
  • 0回复

[JAVA]用Java实现的各种排序

级别: 终身会员
发帖
3743
铜板
8
人品值
493
贡献值
9
交易币
0
好评度
3746
信誉值
0
金币
0
所在楼道
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。 v<wR`7xG  
插入排序: #O2e[ E-  
+rA:/!b)Y  
package org.rut.util.algorithm.support; ;^`WX}]C(  
uEPdL':}2  
import org.rut.util.algorithm.SortUtil; z'+k]N9Q^  
/** f-b#F2I  
* @author treeroot Kc[Y .CH  
* @since 2006-2-2 #(KE9h%  
* @version 1.0 _YM]U`*  
*/ ;YK{[$F  
public class InsertSort implements SortUtil.Sort{ >'GQB  
7w]NG`7  
/* (non-Javadoc) -w#Hy>E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1FQ_`wF4  
*/ auKGm:  
public void sort(int[] data) { +zup+=0e  
int temp; '7Aj0U(  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ID1/N)5 6  
} f/Q7WXl0  
} IR<`OA  
} 3S_H hvB  
L% cr `<~  
} nB+ e2e&  
C@8WY  
冒泡排序: qIIl,!&}A  
%ymM#5A  
package org.rut.util.algorithm.support; j%y)%4F8  
IhYTK%^96  
import org.rut.util.algorithm.SortUtil; oA1d8*i^E  
N=X(G(  
/** 7Odw{pc  
* @author treeroot W7ffdODb  
* @since 2006-2-2 7<ZCeM2x  
* @version 1.0 mI$3[ #+  
*/ zu8l2(N  
public class BubbleSort implements SortUtil.Sort{ c[xH:$G?Y  
Ao/KB_4f*Q  
/* (non-Javadoc) :O(<3"P/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s[HQq;S  
*/ [8J/# !B  
public void sort(int[] data) { O)4P)KAO<  
int temp; !ufSO9eDx"  
for(int i=0;i for(int j=data.length-1;j>i;j--){ STxreW1  
if(data[j] SortUtil.swap(data,j,j-1); (Z72 3)  
} u3>D vl@  
} s{]2~Z^2od  
} V9"?}cR/W;  
} tLzX L *  
gqi|k6V/  
} MSMgaw?  
QNzx(IV@  
选择排序: - #ta/*TT:  
%`~? w'  
package org.rut.util.algorithm.support;  HSR^R  
ayb fBC  
import org.rut.util.algorithm.SortUtil; Dm.tYG  
u0vq`5L  
/** MiX*PqNTM  
* @author treeroot {hLS,Me  
* @since 2006-2-2 )G">7cg;t  
* @version 1.0 \?9{H6<=  
*/ 6UkX?I`>  
public class SelectionSort implements SortUtil.Sort { sP+ZE>7  
FojsI<  
/* # [0>wEq  
* (non-Javadoc) FLI0C  
* )Z2l*fV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dgIEc]#pH  
*/ 0y"Ra%Y  
public void sort(int[] data) { BP7&w d  
int temp; y,`SLgBID  
for (int i = 0; i < data.length; i++) { 3]iBX`Ni  
int lowIndex = i; !PFc)J  
for (int j = data.length - 1; j > i; j--) { P}El#y#&  
if (data[j] < data[lowIndex]) { eI 6G  
lowIndex = j; UUF;Q0X  
} iw$n*1M  
} }Z~& XL=  
SortUtil.swap(data,i,lowIndex); q i27:oJ  
} d1`us G"  
} cTR@ :sm  
Y`x54_32  
} f[b x|6  
jo-qP4w  
Shell排序: v$H]=y  
3%JPJuNVw  
package org.rut.util.algorithm.support; m R3km1T  
7|"gMw/  
import org.rut.util.algorithm.SortUtil; 'WA]DlO  
j0L A  
/** A;4O,p@   
* @author treeroot &mM[q 'V  
* @since 2006-2-2 ~S],)E1w  
* @version 1.0 k3 65.nc  
*/ SRixT+E  
public class ShellSort implements SortUtil.Sort{ #hOAG_a,  
,MtN_V-  
/* (non-Javadoc) ;LBq!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dz6i~&  
*/ {=Y.Z1E:  
public void sort(int[] data) { 3+%c*}KC~  
for(int i=data.length/2;i>2;i/=2){ >q:0w{.TU  
for(int j=0;j insertSort(data,j,i); RK*ZlD<  
} `;@#yyj:_  
} <]u~;e57  
insertSort(data,0,1); "Zh6j)[o  
} B^z3u=ll  
7%-+7O3ud  
/** l~/g^lN  
* @param data ~vVsxC$.  
* @param j Wa8?o~0"L  
* @param i 0;b%@_E  
*/ J(\]39y  
private void insertSort(int[] data, int start, int inc) { xlqh,?'>W  
int temp; GTw3rD^wg  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); yH<^txNF  
} n 2k&yL+a  
} =]OG5b_-Y  
} !Ol>![  
@ y (9LSs  
} )<D(Mb 2p|  
LV:`si K  
快速排序: +=5Dt7/|  
QT5,_+ho  
package org.rut.util.algorithm.support; v$O%U[e<  
\` |*i$  
import org.rut.util.algorithm.SortUtil; ]yxRaW9f  
Zz\e:/  
/** DL^}?Ve  
* @author treeroot 6o_t;cpT  
* @since 2006-2-2 ]"3(UKx  
* @version 1.0 *EZ'S+wR  
*/ v.08,P{b  
public class QuickSort implements SortUtil.Sort{ Y6|8;2E  
]#C;)Vy  
/* (non-Javadoc) Yxal%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X676*;:!.  
*/ -`mHb  
public void sort(int[] data) { SWX;sM  
quickSort(data,0,data.length-1); PKT/U^2X]  
} 24TQl<H{  
private void quickSort(int[] data,int i,int j){  $)5F3 a|  
int pivotIndex=(i+j)/2; =%4vrY `  
file://swap ; 7`y##  
SortUtil.swap(data,pivotIndex,j); 0 ttM_]#q  
"Q:m0P xb  
int k=partition(data,i-1,j,data[j]); vGK'U*gGD  
SortUtil.swap(data,k,j); >-s\$8En'  
if((k-i)>1) quickSort(data,i,k-1); /$7_*4e  
if((j-k)>1) quickSort(data,k+1,j); nyZUf{:  
@ (UacFO  
} t?1+Yw./em  
/** Zhl}X!:c?\  
* @param data \\F@_nB,b  
* @param i cG|ihG5)  
* @param j 8+Y+\XZG  
* @return AwhXCq|k  
*/ `7|\Gqy  
private int partition(int[] data, int l, int r,int pivot) { $e=pdD~  
do{ Y7{9C*>  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); V@0Z\&  
SortUtil.swap(data,l,r); QMGMXa   
} !$&3h-l[  
while(l SortUtil.swap(data,l,r); n\Z& sc  
return l; F[Dhj,C"  
} k!gft'iU  
KJ Gh)  
} SBnwlM"AN  
:nuMakZZ  
改进后的快速排序: Yg5m=Lis  
OPp>z0p%6X  
package org.rut.util.algorithm.support; VO|2  
-r9G5Z!|n  
import org.rut.util.algorithm.SortUtil; yq{k:)  
1C[j:Ly/  
/** >&0)d7Nu8m  
* @author treeroot RO-ABFEi(  
* @since 2006-2-2 ;?/v}$Pa  
* @version 1.0 (UDR=7w)  
*/ mK3U*)A   
public class ImprovedQuickSort implements SortUtil.Sort { *(PQaXx4  
S!0ocS!t  
private static int MAX_STACK_SIZE=4096; >&K1+FSmyJ  
private static int THRESHOLD=10; x)M=_u2 _  
/* (non-Javadoc) 2k,!P6fgl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FcnSO0G%  
*/ \;w+_<zE5{  
public void sort(int[] data) { #!wL0 p  
int[] stack=new int[MAX_STACK_SIZE]; o|\0IG(\  
?QGAiu0  
int top=-1; aB9Pdu t  
int pivot; gl/n*s#r_  
int pivotIndex,l,r; b?#k  
S ^?&a5{o  
stack[++top]=0; eGrC0[SH  
stack[++top]=data.length-1; -G<$wh9~3  
l4oI5)w  
while(top>0){ p?OwcMT]M  
int j=stack[top--]; nwlo,[  
int i=stack[top--]; Y[=Gv6Fr  
0ad -4  
pivotIndex=(i+j)/2; ;<Dou7=  
pivot=data[pivotIndex]; $gsn@P>"  
>;S/$  
SortUtil.swap(data,pivotIndex,j); =W1`FbR  
3lc'(ts %  
file://partition gn&jNuGg  
l=i-1; @Oe!*|?mS  
r=j; #4. S2m4  
do{ $O*rxQ}  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 2| u'J  
SortUtil.swap(data,l,r); Z~}=q  
} M{S7tMX  
while(l SortUtil.swap(data,l,r); 30 Vv Zb  
SortUtil.swap(data,l,j); 5b9v`6Kq  
g:/l5~b  
if((l-i)>THRESHOLD){ H R$\jJ  
stack[++top]=i; &P>wIbE  
stack[++top]=l-1; cyq]-B  
} $ig%YB  
if((j-l)>THRESHOLD){ 7dl]f#uZU  
stack[++top]=l+1; Fx']kn9  
stack[++top]=j; ^E&':6(  
} &(h~{  
%C*oy$.  
} q^],K'  
file://new InsertSort().sort(data); j[ !'l,I  
insertSort(data); {s}@$rW  
} cT abZc  
/** >jjuWO3T  
* @param data @DYxxM-  
*/ f $MVgX  
private void insertSort(int[] data) { %\?2W8Qv_J  
int temp; eiB5 8b3  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ,?;q$Xoi  
} riqvv1Nce  
} 7_ g}t!b`  
} ;\=W=wL(  
8M m,a  
} * ";A~XNx  
M$L1!o1Xf  
归并排序: ^g`1SU`  
0R~{|RHM  
package org.rut.util.algorithm.support; 7MreBs(M  
BBy"qkTe  
import org.rut.util.algorithm.SortUtil; 1bb~u/jU  
H"W%+{AR  
/** :&Xy#.un  
* @author treeroot SS@F:5),  
* @since 2006-2-2 4CO:*qG)o  
* @version 1.0 |,F/_    
*/ gio'_X  
public class MergeSort implements SortUtil.Sort{ 3IHya=qN  
aF4vNUeG  
/* (non-Javadoc) ^y"Rdv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }YHoWYR  
*/ _|.q?;C]$  
public void sort(int[] data) { n0#HPI"  
int[] temp=new int[data.length]; c;l d  
mergeSort(data,temp,0,data.length-1); C.dN)?O  
} P`wp`HI  
kBd #=J  
private void mergeSort(int[] data,int[] temp,int l,int r){ IbAGnl{  
int mid=(l+r)/2; AZcW f8  
if(l==r) return ; b`E'MX_ m  
mergeSort(data,temp,l,mid); 7>`QX%  
mergeSort(data,temp,mid+1,r); |S#)[83*3  
for(int i=l;i<=r;i++){ N?0T3-/K  
temp=data; -?n|kSHX  
} eS9/- Y  
int i1=l; rJK3;d?E  
int i2=mid+1; %^}3:0G  
for(int cur=l;cur<=r;cur++){ f,z_|e  
if(i1==mid+1) i[)H!%RV*  
data[cur]=temp[i2++]; h0`@yo  
else if(i2>r) >_h*N H  
data[cur]=temp[i1++]; a2 fV0d6*l  
else if(temp[i1] data[cur]=temp[i1++]; L}CjC>R!  
else 3B95t-  
data[cur]=temp[i2++]; :N5R.@9  
} W@jBX{k  
} .x7d!t:(D  
|RX u O  
} G^J|_!.a  
9r% O  
改进后的归并排序: W>0 36  
C0;c'4(  
package org.rut.util.algorithm.support; "#^11o8  
S{aK\>>H  
import org.rut.util.algorithm.SortUtil; GQO}E@W6C  
PO5/j  
/** ve_TpP  
* @author treeroot Kf D8S  
* @since 2006-2-2 hkeOe  
* @version 1.0 d(zBd=;  
*/ JX@/rXFY}  
public class ImprovedMergeSort implements SortUtil.Sort { FS30RP3 `/  
%g}ri8  
private static final int THRESHOLD = 10; fQq'_q5  
DQY*0\  
/* S1NM9xHJ  
* (non-Javadoc) !T02@e/  
* 4v cUHa|4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9/TF #  
*/ ;muxIr`?  
public void sort(int[] data) { m[,! orq  
int[] temp=new int[data.length]; xpt*S~  
mergeSort(data,temp,0,data.length-1); 8W Mhe=[  
} $NzD&b$7  
v)>R)bzqe  
private void mergeSort(int[] data, int[] temp, int l, int r) { }-9  
int i, j, k; smW 7zGE  
int mid = (l + r) / 2; q-O=Em<*  
if (l == r) .4pWyqU)!  
return; s,O:l0  
if ((mid - l) >= THRESHOLD) Q1?  !,a  
mergeSort(data, temp, l, mid); uFNVV;~RFI  
else gtWJR  
insertSort(data, l, mid - l + 1); 3G|n`dj  
if ((r - mid) > THRESHOLD) pq$`T|6^  
mergeSort(data, temp, mid + 1, r); vK z/-9im  
else mnswG vY  
insertSort(data, mid + 1, r - mid);  chW 1UE  
y`!~JL*  
for (i = l; i <= mid; i++) { 8V@ /h6-e,  
temp = data; {H{u[XR[z  
} nE#p Ry]  
for (j = 1; j <= r - mid; j++) { )*ocX)AE  
temp[r - j + 1] = data[j + mid]; .^0@^%Wi  
}  Ew1> m'  
int a = temp[l]; <m:8%]%M6  
int b = temp[r]; ?bu-6pkx]  
for (i = l, j = r, k = l; k <= r; k++) { d-w#\ ^  
if (a < b) { VJ;4~WgBz  
data[k] = temp[i++]; ^w'y>uFM  
a = temp; f"j~{b7  
} else { :r* skV|  
data[k] = temp[j--]; oHH-joYnn  
b = temp[j]; [=imF^=3Vb  
} c.y8x  
} ]wCg'EUB  
} f]N2(eM  
kKwb)i  
/** zI77#AUM  
* @param data 8TIc;'bRM  
* @param l V uZd  
* @param i (;-< @~2  
*/ 2.6%?E]  
private void insertSort(int[] data, int start, int len) { H$Om{r1j  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); gSS2)Sd}  
} 'B0= "7  
} 5>M6lwS  
} ~ {OBRC  
} W Z`u"t^2V  
M:i;;)cq  
堆排序: Kt5;GUV  
QyN<o{\FD!  
package org.rut.util.algorithm.support; <Uf?7  
^"N]i`dIF  
import org.rut.util.algorithm.SortUtil; kX!TOlk3  
H.#<&5f  
/** R@_i$Df|  
* @author treeroot c+P.o.k;  
* @since 2006-2-2 K1]m:Y<  
* @version 1.0 Obwj=_+upd  
*/ f/Cf2 K  
public class HeapSort implements SortUtil.Sort{ To v!X8p  
S{_i1'  
/* (non-Javadoc) V4kt&61  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AdV&w: ^yf  
*/ H<bYm]a%  
public void sort(int[] data) { Kv3cKNvu~  
MaxHeap h=new MaxHeap(); @X\-c2=  
h.init(data); SJ4[n.tPI  
for(int i=0;i h.remove(); Q@zD'G >  
System.arraycopy(h.queue,1,data,0,data.length); uM|*y-4  
} L} r#KfIb  
O3H dPQ  
private static class MaxHeap{ ?QuD:v ck  
hJ[Z~PC\T0  
void init(int[] data){ !Wn^B|  
this.queue=new int[data.length+1]; G}ZJ}5h  
for(int i=0;i queue[++size]=data; eiE36+'>b  
fixUp(size); zi M~V'  
} 0~2~^A#]\  
} 08*bYJu  
_?Q0yVH;,  
private int size=0; {akSK  
I29aja  
private int[] queue; S[g{ )p)  
imGg3'  
public int get() { V?x&.C2Z  
return queue[1]; V80BO#Pk  
} H4l*  
.dqV fa  
public void remove() { yr=$a3web;  
SortUtil.swap(queue,1,size--); K)!yOa'fH  
fixDown(1); M@\A_x(Mas  
} j?a^fcXB  
file://fixdown op!8\rM<e  
private void fixDown(int k) { Yn!)('FdT!  
int j; Rs*]I\  
while ((j = k << 1) <= size) { (.Q.S[<Y  
if (j < size %26amp;%26amp; queue[j] j++; w<}kY|A"=-  
if (queue[k]>queue[j]) file://不用交换 <OF2\#Nh  
break; OEMYS I%  
SortUtil.swap(queue,j,k); 5cY([4,  
k = j; n."vCP}O+  
} iKs @oHW  
} KY}c}*0  
private void fixUp(int k) { @K{1O|V  
while (k > 1) { %#5yC|o9Pn  
int j = k >> 1; (t$jb |Oa  
if (queue[j]>queue[k]) SvE3E$*  
break; !$}:4}56F  
SortUtil.swap(queue,j,k); <UI^~Azc#  
k = j; |]s/NNU  
} 9eG{"0)  
} s.VtmAH  
#m %ZW3  
} of?hP1kl[  
K9\p=H^T7  
} }.+{M.[}  
wrtJ8O(  
SortUtil: -B+Pl*  
~cC =DeX  
package org.rut.util.algorithm; SxyXz8+e[  
W@"s~I6  
import org.rut.util.algorithm.support.BubbleSort; OFcL h  
import org.rut.util.algorithm.support.HeapSort; ^ud-N;]MKs  
import org.rut.util.algorithm.support.ImprovedMergeSort; LmCr[9/  
import org.rut.util.algorithm.support.ImprovedQuickSort; =EE>QM  
import org.rut.util.algorithm.support.InsertSort; R<* c   
import org.rut.util.algorithm.support.MergeSort; k9]M=eO  
import org.rut.util.algorithm.support.QuickSort; H] i.\2z  
import org.rut.util.algorithm.support.SelectionSort; b A/,{R  
import org.rut.util.algorithm.support.ShellSort; /=o~7y  
&`]Lg?J  
/** DjzHEqiH  
* @author treeroot a| w.G "W  
* @since 2006-2-2 W8bh49   
* @version 1.0 Vr%>'XN>"  
*/ hDPZj#(c  
public class SortUtil { >"Tivc5  
public final static int INSERT = 1; -L zx3"  
public final static int BUBBLE = 2; S}mZU!  
public final static int SELECTION = 3; h!@t8R  
public final static int SHELL = 4; GPyr;FV!s  
public final static int QUICK = 5; K'/,VALp  
public final static int IMPROVED_QUICK = 6; S_ELZO#7  
public final static int MERGE = 7; c)L1@qdZ  
public final static int IMPROVED_MERGE = 8; NOzAk%s3I  
public final static int HEAP = 9; fLGZ@-qA0  
45?aV@  
public static void sort(int[] data) { 'r/+z a:2  
sort(data, IMPROVED_QUICK); 2=?:(e9  
} fv;3cxQp  
private static String[] name={ |<:Owd=  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" U"SH fI:  
}; ,}8|[)"  
F},#%_4  
private static Sort[] impl=new Sort[]{ Hj\iI p  
new InsertSort(), . N:& {$o:  
new BubbleSort(),  ~OdE!!  
new SelectionSort(), bQTkW<7gh  
new ShellSort(), nu=yE$BN{  
new QuickSort(), Nj p?/r  
new ImprovedQuickSort(), O1C| { M  
new MergeSort(), *#{V ^}  
new ImprovedMergeSort(), 9n\b!*x  
new HeapSort() u;@~P  
}; uD'GI  
+1uAzm4SL  
public static String toString(int algorithm){ 7dg2-4  
return name[algorithm-1]; [unK5l4_!  
} ^0x0 rY  
%$'YP  
public static void sort(int[] data, int algorithm) { {Yt@H  
impl[algorithm-1].sort(data); \w6A-daD0  
} Z30r|Ufh  
 _klT  
public static interface Sort { e-@.+ f2CC  
public void sort(int[] data); @.D1_A  
} f3[/zcm;  
-g5o+RT@  
public static void swap(int[] data, int i, int j) { xE{PsN1 X;  
int temp = data; >14 x.c  
data = data[j]; }{oZdO  
data[j] = temp; 2:8p>^g=  
} CyHaFUbZ  
} _NwB7@ e  
评价一下你浏览此帖子的感受

精彩

感动

搞笑

开心

愤怒

无聊

灌水
描述
快速回复

您目前还是游客,请 登录注册
如果您在写长篇帖子又不马上发表,建议存为草稿
认证码:
验证问题:
10+5=?,请输入中文答案:十五