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
  • 5096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。 h/{8bC@bi  
插入排序: T&!ZD2I  
6w@,I;   
package org.rut.util.algorithm.support; 8eN%sm  
oM2|]ew)  
import org.rut.util.algorithm.SortUtil; ` )]lUvR  
/** tz3]le|ml  
* @author treeroot QWQ!Ak  
* @since 2006-2-2 WySNL#>a  
* @version 1.0 r /^'Xj'(  
*/ h2AGEg'g2[  
public class InsertSort implements SortUtil.Sort{ 2>ys2:z  
#*\Ry/9Q  
/* (non-Javadoc) 4u7Cm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cJ2y)`  
*/ aDXpkG0E  
public void sort(int[] data) { _J` |<}?t;  
int temp; 1"M"h_4  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1);  w}"!l G  
} x{~_/;\p3  
} F@Pem  
} a4:`2  
f8R+7Ykx  
} h<GyplG  
2NyUmJ42  
冒泡排序: ?{?Vy9'B  
9x4wk*z  
package org.rut.util.algorithm.support; L,O>6~9:^1  
uF+);ig  
import org.rut.util.algorithm.SortUtil; ;B*L1'FF%t  
m9%yR"g9  
/** ;g&7*1E  
* @author treeroot Zp^)_ 0  
* @since 2006-2-2 LH bZjZ2  
* @version 1.0 %f_FGh  
*/ tP&{ J^G  
public class BubbleSort implements SortUtil.Sort{ 7 FEzak'  
zwKg  
/* (non-Javadoc)  ~WzMK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y"r3i]  
*/ 58qaA\iw  
public void sort(int[] data) { o-L|"3 P  
int temp; Rd`{qW  
for(int i=0;i for(int j=data.length-1;j>i;j--){  =7*oC  
if(data[j] SortUtil.swap(data,j,j-1); |:~("rA+v  
} *QMF <ze  
} ;|Y2r^c  
} 22l|!B%o  
} GH [ U!J  
U&w*Sb"  
} pHq{S;R2G  
L~'^W/N  
选择排序: [3Wsc`Q  
_HSTiJVr  
package org.rut.util.algorithm.support; ;JMOsn}8  
kxcgOjrmI  
import org.rut.util.algorithm.SortUtil; L&+% Wd~  
V5hp Y ]  
/** at_dmU2[7  
* @author treeroot WiPM <'  
* @since 2006-2-2 t't^E,E .@  
* @version 1.0 AT2NC6{M  
*/ 1^n5CI|7u  
public class SelectionSort implements SortUtil.Sort { K8e4ax  
]L5Z=.z&  
/* AJJ%gxqGq  
* (non-Javadoc) >FK)p   
* yt]Oj*nn0K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Fm-q=3  
*/ sDz)_;;%  
public void sort(int[] data) { `kaR@t  
int temp; a!s.850@  
for (int i = 0; i < data.length; i++) { ymzPJ??!  
int lowIndex = i; Q' OuZKhA  
for (int j = data.length - 1; j > i; j--) { hlABu)B'1  
if (data[j] < data[lowIndex]) { r"Hbr Qn  
lowIndex = j; eSQzjR*  
} #dxJ#  
} nN(D7wk  
SortUtil.swap(data,i,lowIndex); )'/nS$\E:  
} j\jL[hG_  
} s[vPH8qb  
vTe$77n  
} >*<6 zQf  
EU?&  
Shell排序: i9f7=-[U_  
`\WcF7  
package org.rut.util.algorithm.support; i-Ge *?  
(50[,:#  
import org.rut.util.algorithm.SortUtil; "4Wp>B  
A*-]J=:E {  
/** rU2YMghE  
* @author treeroot .f?qUg  
* @since 2006-2-2 aHVdClD2o  
* @version 1.0 E)rOlh7  
*/ _k"&EW{ Ii  
public class ShellSort implements SortUtil.Sort{ R9|2&pfm(M  
3_R   
/* (non-Javadoc) 3<~2"@J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QTrlQH&p  
*/ yP1Y3Tga=  
public void sort(int[] data) { ~t.WwxY+  
for(int i=data.length/2;i>2;i/=2){ /I`bh  
for(int j=0;j insertSort(data,j,i); r=iMo7q  
} @?^LxqAWA  
} 5* o\z&*L  
insertSort(data,0,1); q|Pt>4c5?  
} Wzf1-0t  
GWA!Ab'<U  
/** jmk*z(}#:  
* @param data yjM@/b  
* @param j [iO$ c]!H  
* @param i JtrDZ;^@  
*/  7KSGG1ts  
private void insertSort(int[] data, int start, int inc) { fEv<W  
int temp; =|WV^0=S'%  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); /v;)H#;  
} 8y 4D9_{  
} 5E oWyy  
} 33,JUQ2u  
!>Qc2&ZV  
} _w5~/PbWt  
PhI6dB`  
快速排序: *3etxnQc  
u8k{N  
package org.rut.util.algorithm.support; 5{d9,$%8&  
l3Bxi1k[C  
import org.rut.util.algorithm.SortUtil; [K4+G]6  
0Z) ;.l^  
/** x[O#(^q  
* @author treeroot :z0>H5  
* @since 2006-2-2 &8_#hne_  
* @version 1.0 R{OE{8;  
*/ V^$rH<  
public class QuickSort implements SortUtil.Sort{ v<J;S9u=  
F#}1{$)% /  
/* (non-Javadoc) J PzQBc5e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T m@1q!G  
*/ \gI:`>- x  
public void sort(int[] data) { >*t>U8  
quickSort(data,0,data.length-1); PqJ*   
} 64 \5v?C  
private void quickSort(int[] data,int i,int j){ ?#EXG  
int pivotIndex=(i+j)/2; yL3<X w|  
file://swap 6 XOu~+7  
SortUtil.swap(data,pivotIndex,j); sc $QbOc  
 ZV q  
int k=partition(data,i-1,j,data[j]); ]20 "la5  
SortUtil.swap(data,k,j); /E4}d =5L  
if((k-i)>1) quickSort(data,i,k-1); ,8"[ /@  
if((j-k)>1) quickSort(data,k+1,j); C}P \kDM  
?'/5%f`  
} ox=7N{+`J  
/** F)5B[.ce  
* @param data ~h^}W$pO  
* @param i if!`Qid  
* @param j ~j&:)a'^  
* @return k-ex<el)#  
*/ 6[2?m*BsN  
private int partition(int[] data, int l, int r,int pivot) { {|J2clL  
do{ } Ved  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); :%b2;&A[  
SortUtil.swap(data,l,r); LI|HET_  
} FPUR0myCU  
while(l SortUtil.swap(data,l,r); L|1zHDxQ  
return l; FqUt uN  
} q}F%o0  
vBYT)S  
} CygV_q  
&P{p\v2Y  
改进后的快速排序: BSu)O~s  
7f Tg97eF  
package org.rut.util.algorithm.support; HFx"fT  
eW*ae;-  
import org.rut.util.algorithm.SortUtil; >eTgP._  
oJJ k  
/** 2SPFjpG8n  
* @author treeroot .f<VmUca  
* @since 2006-2-2 hCvLwZ?LF  
* @version 1.0 Ufe  
*/ :9 iOuu  
public class ImprovedQuickSort implements SortUtil.Sort { Nx (pJp{S  
$0S"Lh{  
private static int MAX_STACK_SIZE=4096; j _9<=Vu  
private static int THRESHOLD=10; >.wd)  
/* (non-Javadoc) #M^Yh?~%w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;6 qdOD6  
*/ *;yMD-=  
public void sort(int[] data) { o4 g  
int[] stack=new int[MAX_STACK_SIZE]; {ZM2WFpE  
zu*G4?]~h  
int top=-1; e, 0I~:  
int pivot; 6N+)LF}P b  
int pivotIndex,l,r; G1^!ej  
6`";)T[G9  
stack[++top]=0; >;r05,mc  
stack[++top]=data.length-1; $z,DcO.vz  
^t ldm7{_  
while(top>0){ 3R:i*8C  
int j=stack[top--]; A}Dpw[Q2@8  
int i=stack[top--]; [gdPHXs  
})SdaZ  
pivotIndex=(i+j)/2; 5"~^;O  
pivot=data[pivotIndex]; HgATH  
]bE?n.NwZ  
SortUtil.swap(data,pivotIndex,j); Hpg;?xAT  
b-zX3R;  
file://partition / cen# pb  
l=i-1; 1`_)%Y[ZJ  
r=j; dsZ ( D:)  
do{ sK/"  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Bg0cC  
SortUtil.swap(data,l,r); M>gZVB,eP>  
} hsO.521g  
while(l SortUtil.swap(data,l,r); fO(S+}  
SortUtil.swap(data,l,j); @CI6$  
T`ZJ=gv  
if((l-i)>THRESHOLD){ 6jo&i  
stack[++top]=i; l'%R^  
stack[++top]=l-1; l{o{=]x1  
} ,4W((OQ^  
if((j-l)>THRESHOLD){ []!r|R3  
stack[++top]=l+1; I8;[DP9  
stack[++top]=j; gK\7^95  
} 1+}Ud.v3VW  
+##I4vP  
} R0<Vd"  
file://new InsertSort().sort(data); 2B dr#qr  
insertSort(data); a`iAA1HJ  
} &)jZ|Q~  
/** .{Oq)^!ot  
* @param data 4H)" d  
*/ _N';`wjDY  
private void insertSort(int[] data) { xG/qDc  
int temp; t+J6P)=  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Wj=ex3K3u.  
} rXPx* /C  
} VVl-cU  
} NWK_(=n  
,x.)L=Cx8  
} A_|FsQ6$P  
ta., 4R&K  
归并排序:  F]#fl%  
gSYX@'Q!  
package org.rut.util.algorithm.support; ):ZumG#o  
}l!_m.#e  
import org.rut.util.algorithm.SortUtil; 0N;d)3  
i]?xM2(N  
/** @0'|Uygn  
* @author treeroot ~GYtU9s5  
* @since 2006-2-2 a`Z f_;$@  
* @version 1.0 0*@S-Lj^c  
*/ 0*x?  
public class MergeSort implements SortUtil.Sort{ ~"Ki2'j)^]  
(SA*9%  
/* (non-Javadoc) L]<4{8H.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rapca'&#  
*/ Uk\U*\.  
public void sort(int[] data) { cSk}53  
int[] temp=new int[data.length]; ", )  
mergeSort(data,temp,0,data.length-1); UOOme)\>  
} r'\TS U5!  
^0-=(JrC  
private void mergeSort(int[] data,int[] temp,int l,int r){ pk1M.+  
int mid=(l+r)/2; hiHp@"l<  
if(l==r) return ; Dx'e+Bm  
mergeSort(data,temp,l,mid); y8z%s/gRh  
mergeSort(data,temp,mid+1,r); ]#n4A|&H  
for(int i=l;i<=r;i++){ l:f sZO4  
temp=data; j3&*wU_  
} m5{SPa,y  
int i1=l;  64fG,b  
int i2=mid+1; O_^h 7   
for(int cur=l;cur<=r;cur++){ #KW:OFT  
if(i1==mid+1)  ?~IZ{!  
data[cur]=temp[i2++]; '7s!N F2  
else if(i2>r) UI;{3Bn  
data[cur]=temp[i1++]; Lai"D[N  
else if(temp[i1] data[cur]=temp[i1++]; Hp!F?J7sx  
else P7-3Vf_L  
data[cur]=temp[i2++]; IhLfuyFWu  
} yk{alSF  
} C<>.*wlp=  
`f]O  
} CI{x/ e^(  
^ BKr0~4A  
改进后的归并排序: 9<S-b |!@  
e_TDO   
package org.rut.util.algorithm.support; {A UEVt  
9MxGyGz$  
import org.rut.util.algorithm.SortUtil; q =6 Y2Q  
`l#g`~L  
/** DAW%?(\,  
* @author treeroot K>y+3HN[6  
* @since 2006-2-2 <H6Uo#ao  
* @version 1.0 %R"Fx$tQ  
*/ \.] U  
public class ImprovedMergeSort implements SortUtil.Sort { HrGX-6`  
=Frr#t!(w0  
private static final int THRESHOLD = 10; X)m2{@v D  
{'!~j!1'j  
/* g\'sGt3O  
* (non-Javadoc) 2|BE{91  
* -; }Wm[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tO7{g  
*/ v*3:8Y,  
public void sort(int[] data) { #SueT"F  
int[] temp=new int[data.length]; soF^G21N  
mergeSort(data,temp,0,data.length-1); :%{7Q$Xv<  
} =xoTH3/,>  
pjFgIG2=9  
private void mergeSort(int[] data, int[] temp, int l, int r) { =%LS9e^7D  
int i, j, k; u2QJDLMJv  
int mid = (l + r) / 2; GCHssw~P'v  
if (l == r) X*KT=q^?n  
return; P; Ox|  
if ((mid - l) >= THRESHOLD) A\`Uu&  
mergeSort(data, temp, l, mid); kel48B  
else B_> Fd&  
insertSort(data, l, mid - l + 1); }R^{<{KVJ  
if ((r - mid) > THRESHOLD) \B)<<[ $  
mergeSort(data, temp, mid + 1, r); wr`eBPu  
else v|6fqG+Q\  
insertSort(data, mid + 1, r - mid); y@I"Hk<T  
k4v[2y`  
for (i = l; i <= mid; i++) { ',f[y:v;  
temp = data; U|=y&a2Rb  
} #u_-TWVt  
for (j = 1; j <= r - mid; j++) { h(BN6ZrzKd  
temp[r - j + 1] = data[j + mid]; aC*J=_9o #  
} 4y 'REC  
int a = temp[l]; dSbV{*B;>  
int b = temp[r]; @y+Wl*:  
for (i = l, j = r, k = l; k <= r; k++) { ]P.S5s'  
if (a < b) { Oaui@q  
data[k] = temp[i++]; y}A-o_u@cD  
a = temp; T~la,>p|}  
} else { c}A^0,"z>  
data[k] = temp[j--]; AOpfByw  
b = temp[j]; fOfp.`n  
} FwyPmtBj  
} < javZJ  
} Y3?kj@T`i  
/=%4gWtr  
/** b~r ?#2K  
* @param data ]^!#0(  
* @param l ?pFHpz   
* @param i !|D,cs  
*/ 1*Z}M%  
private void insertSort(int[] data, int start, int len) { >Q YxX<W  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); bz1\EkLL  
} =3FXU{"Qi4  
} #C|iW@  
} _QQO&0Z  
} il: ""x7^y  
yt?# T #  
堆排序: # aC}\  
_b+3;Dy  
package org.rut.util.algorithm.support; Q?~l=}2  
d< y B ~Y  
import org.rut.util.algorithm.SortUtil; @ ~PL|Pp_  
k7j;'6  
/** \eN}V  
* @author treeroot ;lGjj9we>  
* @since 2006-2-2 co: W!  
* @version 1.0 _]B'C  
*/ 'E9\V\bi  
public class HeapSort implements SortUtil.Sort{ Q WOd&=:  
G*ecM`Bl  
/* (non-Javadoc) STO6cNi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T3\Q<  
*/ 'C(YUlT2?P  
public void sort(int[] data) { )F:hv[iv  
MaxHeap h=new MaxHeap(); =h4XsV)rO  
h.init(data); &",pPu q  
for(int i=0;i h.remove(); OfPWqNpO  
System.arraycopy(h.queue,1,data,0,data.length); F*QGzbv)  
} zH.7!jeE  
9T)-|fja_  
private static class MaxHeap{ ?>2k>~xlQ  
7Kfh:0Ihhy  
void init(int[] data){ 9mr99 tA  
this.queue=new int[data.length+1]; .QW89e,O3  
for(int i=0;i queue[++size]=data; `w2hJP  
fixUp(size); `C,479~J  
} KATt9ox@  
} Nb-;D)W;B  
1I_(!F{Ho  
private int size=0; (Ori].{C.J  
kA fkQy(~  
private int[] queue;  IG 6yt  
q45Hmz  
public int get() { h60*=+vdJ  
return queue[1]; S_WYU&8  
} |*Hw6m  
U5odSR$  
public void remove() { MC^H N w  
SortUtil.swap(queue,1,size--); q'[5h>Pa  
fixDown(1); +[ !K  
} 0X.pI1jCO  
file://fixdown !M6*A1g5  
private void fixDown(int k) { +g%kr~w=  
int j; _dj_+<Y?  
while ((j = k << 1) <= size) { .cjSgK1  
if (j < size %26amp;%26amp; queue[j] j++; Ng2qu!F7  
if (queue[k]>queue[j]) file://不用交换 TN4gGky!  
break; ,F]Y,"x:  
SortUtil.swap(queue,j,k); }O-|b#Q  
k = j; `J#(ffo-  
} DR;rK[f  
} NZ7g}+GTG  
private void fixUp(int k) { m\RU |Z  
while (k > 1) { s7[du_)  
int j = k >> 1; GG-7YJ  
if (queue[j]>queue[k]) Ru `&>E  
break; >:WnCkbp  
SortUtil.swap(queue,j,k); ycTX\.KV  
k = j; > X<pzD3u  
} z1K@AaRx  
} h,"K+$  
$C#G8Ck,  
} vvwNJyU-  
)%I2#Q"Nt-  
} [LbUlNq^B@  
|wZcVct~  
SortUtil: Kf/1;:^  
fYBmW')  
package org.rut.util.algorithm; KEEHb2q  
ci a'h_w  
import org.rut.util.algorithm.support.BubbleSort; 9Ra*bP ]1  
import org.rut.util.algorithm.support.HeapSort; nep0<&"  
import org.rut.util.algorithm.support.ImprovedMergeSort; YBehyx2eK  
import org.rut.util.algorithm.support.ImprovedQuickSort; E<y0;l?H<  
import org.rut.util.algorithm.support.InsertSort; u_shC"X:  
import org.rut.util.algorithm.support.MergeSort; Gm~jC <  
import org.rut.util.algorithm.support.QuickSort; ErnjIx:  
import org.rut.util.algorithm.support.SelectionSort; ;EDc1:  
import org.rut.util.algorithm.support.ShellSort; |uf{:U)  
xM"k qRZ  
/** pUi|&F K">  
* @author treeroot 2dg+R)%  
* @since 2006-2-2 'B>fRN  
* @version 1.0 AwN7/M~'  
*/ I&%{%*y  
public class SortUtil { V C$,Y  
public final static int INSERT = 1; ;6P #V`u  
public final static int BUBBLE = 2; |*W_  
public final static int SELECTION = 3; g<(3wL,"  
public final static int SHELL = 4; {xJq F4  
public final static int QUICK = 5; v,Eqn8/O  
public final static int IMPROVED_QUICK = 6; Z\c^CN  
public final static int MERGE = 7; cAnL,?_v  
public final static int IMPROVED_MERGE = 8; uyZ  
public final static int HEAP = 9; P@lDhzd  
u_ou,RF  
public static void sort(int[] data) { $=3&qg"!  
sort(data, IMPROVED_QUICK); 7/C,<$Ep  
} /Y| y0iK  
private static String[] name={ nE;^xMOK!  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" t+y$i@R:  
}; HGIPz{/5U  
vM G>Xb  
private static Sort[] impl=new Sort[]{ %c:v70*h=  
new InsertSort(), OI/m_xx@j  
new BubbleSort(), qM}Uk3N0  
new SelectionSort(), ;r<(n3"F  
new ShellSort(), b/;!yOF  
new QuickSort(), :buH\LB*P  
new ImprovedQuickSort(), 17kh6(X  
new MergeSort(), c$fi3O  
new ImprovedMergeSort(), su:~X d  
new HeapSort() WRIOjQ:  
}; ^K[WFiN}  
: :?,ZA  
public static String toString(int algorithm){ f 0"N  
return name[algorithm-1]; 4PdJ  
} "MS}@NLUW  
"$P|!k45(  
public static void sort(int[] data, int algorithm) { q-? k=RX`  
impl[algorithm-1].sort(data); 4sJM!9eb[  
} w2 %u;D%  
MX*T.TG8  
public static interface Sort { 4 H 4W  
public void sort(int[] data); ''. P=  
} V%|CCrR  
 F6'[8f  
public static void swap(int[] data, int i, int j) { ui>0?O*G  
int temp = data; Gz09#nFZk  
data = data[j]; g<b(q|  
data[j] = temp; $!Qv f  
} AhozrroV  
} mHj3ItXUu  
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
如果您提交过一次失败了,可以用”恢复数据”来恢复帖子内容
认证码:
验证问题:
3+5=?,请输入中文答案:八 正确答案:八