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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。 l7um9@[4  
插入排序: 7NqV*  
nu -wQr  
package org.rut.util.algorithm.support; HJrg  
y>1 8)8  
import org.rut.util.algorithm.SortUtil; ;BvWU\!  
/** =S +:qk  
* @author treeroot Jev.o]|_,  
* @since 2006-2-2 /bk} J:QRg  
* @version 1.0 NFPkK?+  
*/ HWZ*Htr  
public class InsertSort implements SortUtil.Sort{ Wm_-T]#_  
^O"`.2O1  
/* (non-Javadoc) 2yc\A3ft#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4D$E  
*/ Q+N @j]'  
public void sort(int[] data) { Y" |U$  
int temp; w$HC!  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); w]XBq~KO  
} IrM3Uh  
} kS!*kk*a  
} % m$Mn x  
PrxXL/6  
} 5%/%i}e~(  
2 ARh-zLb  
冒泡排序: 3Mt6iZW  
a$A S?`L  
package org.rut.util.algorithm.support; t|_g O!w8  
q[g^[~WM#  
import org.rut.util.algorithm.SortUtil; b,`N;*  
Wc[)mYOSuO  
/** AU2Nmf?]%  
* @author treeroot v4^VYi,.-  
* @since 2006-2-2 0\A[a4crj  
* @version 1.0 s5@^g8(+C  
*/ W;W\L? r  
public class BubbleSort implements SortUtil.Sort{ !;oBvE7Kh  
7c7SU^hD  
/* (non-Javadoc) ?y kIi/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }wKU=Vm  
*/ g5`YUr+3?h  
public void sort(int[] data) { WOoVVjMM  
int temp; W=+ag<@  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 0KEl+  
if(data[j] SortUtil.swap(data,j,j-1); fN;y\!q5  
} @wz7jzMi  
} mmti3Y  
} l-rI|0D#  
} |ESe=G  
(>'d`^kjk  
} 6zSN?0c  
.v'8G)6g  
选择排序: PeZ=ONY5  
>EG;2]M&  
package org.rut.util.algorithm.support; b9Nw98`  
w}?\Q,  
import org.rut.util.algorithm.SortUtil; lC{m;V2  
Wit1WI;18  
/** Pc-HQU  
* @author treeroot C_o.d~xm  
* @since 2006-2-2 HH+XEMP/g  
* @version 1.0 {Gy_QRsp,  
*/ 1l{n`gR  
public class SelectionSort implements SortUtil.Sort { +`xp+Q  
DzMkeX  
/* Zf! 7pM  
* (non-Javadoc) H>?@nYP  
* 5sRNqTIr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?/D#ql7  
*/ ,KWeW^z'7  
public void sort(int[] data) { [;}c@  
int temp; <KCgtO  
for (int i = 0; i < data.length; i++) { 8vCHH&`  
int lowIndex = i; a?dM8zAnc  
for (int j = data.length - 1; j > i; j--) { OXo-(HLE  
if (data[j] < data[lowIndex]) { K7U<~f$OiN  
lowIndex = j; W\/0&H\i  
} x.aUuC,$x  
} )yJjJ:re  
SortUtil.swap(data,i,lowIndex); _*_zyWW_j  
} uxBk7E%6  
} j"]%6RwM]  
V=U%P[S  
} Aka`L:k  
H}X"yLog*  
Shell排序: HD|5:fAqA  
qH$p]+Rk 5  
package org.rut.util.algorithm.support; 1Pbp=R/7ar  
.(krB% N  
import org.rut.util.algorithm.SortUtil; U]d+iz??b  
r+n&Pp+9  
/** G{<wXxq%  
* @author treeroot #gq3 e  
* @since 2006-2-2 tpS F[W  
* @version 1.0 BFY~::<b  
*/ R_csKj  
public class ShellSort implements SortUtil.Sort{ ??4QDa-  
5M3QRJ!  
/* (non-Javadoc) 3N-(`[m{E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6 J#C  
*/ yq2Bz7P  
public void sort(int[] data) { [Z1EjeX  
for(int i=data.length/2;i>2;i/=2){ t{ 'QMX  
for(int j=0;j insertSort(data,j,i); (NP=5lLH  
} GIp?}tM  
} n D?XP<9UU  
insertSort(data,0,1); y]k`}&-~  
} '7$v@Tvnre  
{.ph)8  
/** 4o_1F).\D  
* @param data 6*%lnd+_  
* @param j D:f#  
* @param i WH!<Z=#c}  
*/ kG E|17I  
private void insertSort(int[] data, int start, int inc) { h<uQ~CQg  
int temp; BJvVZl2h  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); UV=TU=A\o  
} ls=<c<  
} ~V<je b  
} ;^;5"n h  
Zhw _L  
} d(&vIjy  
7+0hIKrFC  
快速排序: Z]aSo07  
D/U o?,>8  
package org.rut.util.algorithm.support; sM4N`$Is23  
m<j ^cU#J  
import org.rut.util.algorithm.SortUtil; 3B,nHU  
L\"$R":3{d  
/** .UJk0%1  
* @author treeroot b{sFN !  
* @since 2006-2-2 wM><DrQ  
* @version 1.0 =w8*n2  
*/ E;N+B34  
public class QuickSort implements SortUtil.Sort{ t ;[Me0  
PRs[:we~~  
/* (non-Javadoc) ; qvZ*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b{(:'.  
*/ Q.nEY6B_  
public void sort(int[] data) { CnO$xE|{  
quickSort(data,0,data.length-1); xx%WIY:}  
} r+>9O  
private void quickSort(int[] data,int i,int j){ S_^"$j  
int pivotIndex=(i+j)/2; 3p7*UVR"  
file://swap thOCzGJ$  
SortUtil.swap(data,pivotIndex,j); p@P[pzxI  
X,~8 ) W  
int k=partition(data,i-1,j,data[j]); 4}gwMjU-B  
SortUtil.swap(data,k,j); Odagaca  
if((k-i)>1) quickSort(data,i,k-1); am`eist:  
if((j-k)>1) quickSort(data,k+1,j); J9 /w_,,R$  
f}*Xz.[bCp  
} 4((Z8@iX/  
/** 9~N7hLT  
* @param data %e _WO,R  
* @param i -cG?lEh <  
* @param j B3K%V|;z )  
* @return ]SK(cfA`  
*/ e{"d6pF=  
private int partition(int[] data, int l, int r,int pivot) { h1,J<B@  
do{  Vb/J`  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); |GIT{_JE  
SortUtil.swap(data,l,r); }V`Fz',lZ  
} Q&wBX%@^L  
while(l SortUtil.swap(data,l,r); S!rUdxO  
return l; 7/Ew(X8Fs  
} =\`9\Gd  
tr):n@  
} ao 32n  
C}45ZI4  
改进后的快速排序: Rd2*  
Dt8eVWkN~  
package org.rut.util.algorithm.support; Y8Mo.v  
<&:3|2p  
import org.rut.util.algorithm.SortUtil; \@5W&Be^  
$U!w#|&  
/** GJ!usv u  
* @author treeroot u K 8 r  
* @since 2006-2-2 y![h  
* @version 1.0 OS,-dG(  
*/ d d8^V_Kx  
public class ImprovedQuickSort implements SortUtil.Sort { GMksr%0Pj  
KPKby?qQ^  
private static int MAX_STACK_SIZE=4096; )00#Rrt9  
private static int THRESHOLD=10; K{HdqmxL.I  
/* (non-Javadoc) bvZmo zbD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @Yy=HV  
*/ [4 "%NY  
public void sort(int[] data) { ^ .>)*P  
int[] stack=new int[MAX_STACK_SIZE]; 2_UH,n  
?jy^WF`  
int top=-1; gm4-w 9M[p  
int pivot; ~ 5`Ngpp  
int pivotIndex,l,r; YAsvw\iseK  
)\p@E3Uxf  
stack[++top]=0; T< P4+#JK  
stack[++top]=data.length-1; AlGD .K  
,v(G2`Z  
while(top>0){ GMd81@7  
int j=stack[top--]; #~nI^ ggW  
int i=stack[top--]; vrh}X[JEw'  
0p! [&O  
pivotIndex=(i+j)/2; IgZX,4i=o  
pivot=data[pivotIndex]; |qfnbi-\  
i9w xP i  
SortUtil.swap(data,pivotIndex,j); 7M5HIK6_  
QTM+ WD  
file://partition ;sb0,2YyP  
l=i-1; URY%+u  
r=j; 8&H1w9NrX_  
do{ Xig%Q~oMp  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 6]na#<  
SortUtil.swap(data,l,r); bSBI[S  
} ,1QU  
while(l SortUtil.swap(data,l,r); CEt_wKz f  
SortUtil.swap(data,l,j); |(Io(e  
\U p<m>3\  
if((l-i)>THRESHOLD){ 0W#.$X5  
stack[++top]=i; W&6ye  
stack[++top]=l-1; iQS?LksQX  
} h (jg7R  
if((j-l)>THRESHOLD){ %/s:G)  
stack[++top]=l+1; !j [U  
stack[++top]=j; 3K P6M=  
} Yr!<O&=  
vP? "MG  
} }Li24JK  
file://new InsertSort().sort(data); BB=%tz`B  
insertSort(data); cYW F)WAog  
} ;<MHDm D  
/** /\h&t6B1  
* @param data DS-Kot(k(z  
*/ <"aPoGda  
private void insertSort(int[] data) { e$ E=n  
int temp; #>[+6y]U!  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); v-4eN1OS  
} -,3Ka:  
} H|==i2V{  
} 8%I4jL<  
*(s)CWf  
} Wv$e/N`l  
*m2J$9q  
归并排序: O zY&^:>  
m`E8gVC  
package org.rut.util.algorithm.support; 2A {k>TjQ  
Z6 (;~"Em  
import org.rut.util.algorithm.SortUtil; '9H]S Ew  
hZ5h(CQ?"#  
/** T<?JL.8g_  
* @author treeroot m>:3Ku  
* @since 2006-2-2 (H0nO7Bk  
* @version 1.0 ^=FtF9v  
*/ EivZI<<a  
public class MergeSort implements SortUtil.Sort{ "VB-=. A  
:8jHN_u  
/* (non-Javadoc) _K8ob8)m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PtwE[YDu  
*/ :W8DgL>l  
public void sort(int[] data) { OV Iu&6#  
int[] temp=new int[data.length]; p7Gs  
mergeSort(data,temp,0,data.length-1); 5(tOQ%AQ  
} dy#dug6j  
"{ AS5jw  
private void mergeSort(int[] data,int[] temp,int l,int r){ &3'II:x(  
int mid=(l+r)/2; a/{T;=_GY  
if(l==r) return ; jo0p/5;  
mergeSort(data,temp,l,mid); "PLZZL$+  
mergeSort(data,temp,mid+1,r); qGr(MDLc  
for(int i=l;i<=r;i++){ -@<k)hWr  
temp=data; >Ix)jSNLgo  
} 9^3y\@ m  
int i1=l; aZ@Ke$jD  
int i2=mid+1; n<y!@p^X  
for(int cur=l;cur<=r;cur++){ I( G8cK  
if(i1==mid+1) \{P(s:  
data[cur]=temp[i2++]; X#Ajt/XQ  
else if(i2>r) V<?t( _Y  
data[cur]=temp[i1++]; sq\oatMw[  
else if(temp[i1] data[cur]=temp[i1++]; j^ex5A.& &  
else /@Y/(+DE  
data[cur]=temp[i2++];  J$v0  
} wYOSaGyZ0I  
} [D^KM|I%+  
} |(KI  
} K Ps 5? X  
jx+%X\zokA  
改进后的归并排序: A#f@0W:  
Tr-gdX ;  
package org.rut.util.algorithm.support; )1Z*kY?f!  
W{?7Pn?1`  
import org.rut.util.algorithm.SortUtil; *R0Ae 4  
8 U B?X  
/** =VH, i/@  
* @author treeroot 9Psy$  
* @since 2006-2-2 w*f.Fu(su  
* @version 1.0 $ GL$ iA  
*/ KaZ$!JfT  
public class ImprovedMergeSort implements SortUtil.Sort { P}KyT?X:  
2~K.m@U}!Z  
private static final int THRESHOLD = 10; bH~ue5q  
=ugxPgn  
/* BOoLs(p  
* (non-Javadoc) '&xv)tno  
* K\`L>B. 1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mflH&Bx9  
*/ x$cs_q]J  
public void sort(int[] data) { ^$4d'  
int[] temp=new int[data.length]; 4M}u_}9  
mergeSort(data,temp,0,data.length-1); HUfH/x3zj]  
} '@3hU|jO!  
?A3pXa  
private void mergeSort(int[] data, int[] temp, int l, int r) { {]n5h#c 5*  
int i, j, k; \8'fy\  
int mid = (l + r) / 2; e #> wv]V  
if (l == r) 6NVf&;laQ  
return; {*r*+}@  
if ((mid - l) >= THRESHOLD) k ?X  
mergeSort(data, temp, l, mid); QyuSle  
else O\,n;oj  
insertSort(data, l, mid - l + 1); [u[F6Wst  
if ((r - mid) > THRESHOLD) hCQz D2  
mergeSort(data, temp, mid + 1, r); fq~ <^B  
else k^}8=,j}  
insertSort(data, mid + 1, r - mid); >t<FG2  
c8v+eyn  
for (i = l; i <= mid; i++) { ?H#]+SpOcv  
temp = data; (A}##h  
} ;3s_#L  
for (j = 1; j <= r - mid; j++) { L 5J=+k,  
temp[r - j + 1] = data[j + mid]; =cs;avtL  
} 4=9To|U*  
int a = temp[l]; Ix93/FAn  
int b = temp[r]; qrsPY d  
for (i = l, j = r, k = l; k <= r; k++) { BQ2EDy=}6  
if (a < b) { <]r.wn=}M  
data[k] = temp[i++]; cor?#  
a = temp; Yc/Nz(m  
} else { k-@CcrepF  
data[k] = temp[j--]; TPZZln'3   
b = temp[j]; /d ?)  
} rDX_$,3L  
} z _~ 5c  
} UN>!#Ji:$  
snT!3t  
/** +R@5e+auQ.  
* @param data K'+GK S7.  
* @param l *Em 9R  
* @param i [ Lt1OdGl  
*/ .iNPLz1  
private void insertSort(int[] data, int start, int len) { AF g*  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); w4H3($ K  
} _Pjo9z 9  
} ( 1T2? mO  
} qba<$  
} T]l_B2.  
I2hX;pk,  
堆排序: "Sz pFw  
()6)|A<^U  
package org.rut.util.algorithm.support; D^W6Cq5\  
/-TJtR4>  
import org.rut.util.algorithm.SortUtil; ,i lVt  
?dP3tLR  
/** 5M4mFC6  
* @author treeroot (.-3q;)6  
* @since 2006-2-2 uvz}qH@j/Q  
* @version 1.0 /Y_F"GQ  
*/ Ml1yk)3G  
public class HeapSort implements SortUtil.Sort{ ER~m &JI  
4J Bm|Pf(  
/* (non-Javadoc) >Ip>x!wi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )T/"QF}<T  
*/ {y0#(8-&  
public void sort(int[] data) { 9!zUv:;  
MaxHeap h=new MaxHeap(); (" <3w2Vlh  
h.init(data); r+-KrO'  
for(int i=0;i h.remove(); Pf5RlpL:p  
System.arraycopy(h.queue,1,data,0,data.length); + VE }c  
} qMD6LWJ  
-H5n>j0!{  
private static class MaxHeap{ Wu(6FQ`H  
SV}q8z\  
void init(int[] data){ rC V&& 09  
this.queue=new int[data.length+1]; 9oKRn c  
for(int i=0;i queue[++size]=data; JG @bl  
fixUp(size); rT9<_<  
} mE^mQ [Dk  
} 6"U&i9  
[hSE^ m  
private int size=0; Q]9H9?}N?  
fz#e4+oH  
private int[] queue; R h zf.kp  
vU0j!XqE  
public int get() { OQ;'Xo  
return queue[1]; Oaf!\ z}  
} I9O!CQCTt  
ac%%*HN,  
public void remove() { ,R]hNjs-{  
SortUtil.swap(queue,1,size--); `W,gYH7  
fixDown(1); 6AV@O  
}  KoVy,@  
file://fixdown cf)2GoV>e  
private void fixDown(int k) { 0(\ybppx  
int j; S^'?s fq  
while ((j = k << 1) <= size) { (dn(:<_$  
if (j < size %26amp;%26amp; queue[j] j++; dmI,+hHtL  
if (queue[k]>queue[j]) file://不用交换 ;S5*n:d  
break; h^h,4 H\r  
SortUtil.swap(queue,j,k); fYU/Jn#  
k = j; OBaG'lrZy  
} &0Yv*,4]  
} Nv}'"V>  
private void fixUp(int k) { H~UxVQLPp  
while (k > 1) { ykcW>h  
int j = k >> 1; 6!7LgM%4  
if (queue[j]>queue[k]) c+chwU0W  
break; t &XH:w&j  
SortUtil.swap(queue,j,k); )u?pqFH  
k = j; +X6x CE  
} P6V_cw$  
} 8wz%e(  
t:NTk(  
} vn<z\wVbf  
g]?&qF}  
} qD Z?iTHQq  
 Ht| No  
SortUtil: gjB36R  
}PdS?[R  
package org.rut.util.algorithm; 7wS )'zR;  
+M-x*;.  
import org.rut.util.algorithm.support.BubbleSort; yx?Z&9z <  
import org.rut.util.algorithm.support.HeapSort; "\M16N  
import org.rut.util.algorithm.support.ImprovedMergeSort; b@j**O>[q)  
import org.rut.util.algorithm.support.ImprovedQuickSort; 5>+>=)*  
import org.rut.util.algorithm.support.InsertSort; 'X&sH/>r  
import org.rut.util.algorithm.support.MergeSort; ov&4&v  
import org.rut.util.algorithm.support.QuickSort; VL= .JwK  
import org.rut.util.algorithm.support.SelectionSort; ;1PnbU b  
import org.rut.util.algorithm.support.ShellSort; O|j(CaF  
1H sfCky{  
/** ? RL[#d+y  
* @author treeroot ): HjpJvF  
* @since 2006-2-2 4TcKs}z  
* @version 1.0 &1)4B  
*/ U5Say3r  
public class SortUtil { R&}"En`$s  
public final static int INSERT = 1; F|p&v7T  
public final static int BUBBLE = 2; )N h67P3X"  
public final static int SELECTION = 3; ({JXv  
public final static int SHELL = 4; e aLSq  
public final static int QUICK = 5; &5>R>rnB  
public final static int IMPROVED_QUICK = 6; 0gdFXh$!e  
public final static int MERGE = 7; (XW\4msB)I  
public final static int IMPROVED_MERGE = 8; 6d/;GyG  
public final static int HEAP = 9; Au Ib>@a  
iIWz\FM  
public static void sort(int[] data) { 5|S|S))_Q  
sort(data, IMPROVED_QUICK); :{@&5KQ8)  
} s%F}4W2s  
private static String[] name={ ArWMbT>Zqw  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 6UK{0\0  
}; mYLqT$t.+  
`B6~KZ  
private static Sort[] impl=new Sort[]{ l_tr,3_w  
new InsertSort(), \HX'^t`  
new BubbleSort(), W" >[sn|  
new SelectionSort(), LV|ZZ.d h  
new ShellSort(), faQ}J%a  
new QuickSort(), qgREkb0  
new ImprovedQuickSort(), XFpII4 5  
new MergeSort(), )yvI  {  
new ImprovedMergeSort(), c'M#va  
new HeapSort() #x-@ >{1k&  
};  1@Abs  
4CA(` _i~  
public static String toString(int algorithm){ '.Iz*%"  
return name[algorithm-1]; k"_i7  
} :lj1[q:Y>  
Y_m/? [:  
public static void sort(int[] data, int algorithm) { A&EVzmj-+X  
impl[algorithm-1].sort(data); >iD&n4TK  
} egQB!%D  
W4n;U-Hb  
public static interface Sort { {A2EGUmF2  
public void sort(int[] data); xs+pCK|  
} Ia_I~ U$  
*Ju$A  
public static void swap(int[] data, int i, int j) { Py2AnpYa  
int temp = data; 7|4t;F!  
data = data[j]; ]7<}EG  
data[j] = temp; e8T#ZWr*  
} 69#mj*p@+  
} mS?.xu  
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