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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。 Y>m=cqR  
插入排序: 9@a;1Wr/f  
~O7(0RsCN  
package org.rut.util.algorithm.support; ]6[d-$#^ko  
y!D`.'  
import org.rut.util.algorithm.SortUtil; -"tgEC\tD  
/** PKs%-Uk  
* @author treeroot %>U*A  
* @since 2006-2-2 hCoL j6Vx  
* @version 1.0 M HB]'  
*/ qxr&_r  
public class InsertSort implements SortUtil.Sort{ `ha:Gf  
,5"]K'Vce  
/* (non-Javadoc) ti2_kYq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UN4) >\Y  
*/ y$Noo)Z  
public void sort(int[] data) { QYb?;Z  
int temp; e%Xf*64  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); T1di$8  
} EKw\a  
} !27]1%Aw  
} (`Mz.VN  
?YykCJJ ~@  
} Cb-E<W&2D  
odn`%ok  
冒泡排序: qP'g}Pc  
M\6v}kUY  
package org.rut.util.algorithm.support; A>2p/iMc  
JU.%;e7  
import org.rut.util.algorithm.SortUtil; Bb"4^EOZ,  
vfDb9QP  
/** F}DD;K  
* @author treeroot 4N0nU  
* @since 2006-2-2 <5}du9@  
* @version 1.0 u@'zvkb@  
*/ A+DYIS  
public class BubbleSort implements SortUtil.Sort{ X&8,.=kt"  
yE9.]j  
/* (non-Javadoc) /~5YTe( F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y"%o\DS*  
*/ \ \}/2#1=c  
public void sort(int[] data) { `\0a5UFR  
int temp; K! j*:{  
for(int i=0;i for(int j=data.length-1;j>i;j--){ qE:DJy <  
if(data[j] SortUtil.swap(data,j,j-1); a$O]'}]`  
} Y@Y(;C"SW  
} 4T E ?mh}  
} 9r#{s Y  
} _?c.3+;s  
W (=B H  
} "-:\-sMt{  
9X` QlJ2|  
选择排序: /CE d 14.  
T+D]bfjr&&  
package org.rut.util.algorithm.support; <~+  
N+75wtLy&  
import org.rut.util.algorithm.SortUtil; LS$82UB&  
h'KtG<+  
/** .U%"oD  
* @author treeroot }O  
* @since 2006-2-2 l$9,  
* @version 1.0 74(J7  
*/ 1iDo$]TEK  
public class SelectionSort implements SortUtil.Sort { =7,U qMl_  
"6QMa,)D  
/* d]`,}vi#E9  
* (non-Javadoc) J,Ap9HJt  
* @E;pT3; )  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) - S-1<xR  
*/ S>E.*]_  
public void sort(int[] data) { J@iN':l-  
int temp; 3Q)>gh*  
for (int i = 0; i < data.length; i++) { nWu4HFi  
int lowIndex = i; ]l%.X7M9  
for (int j = data.length - 1; j > i; j--) { j@!}r|-T  
if (data[j] < data[lowIndex]) { -rlX<(pl)  
lowIndex = j; -`EoTXT*U  
} cvfAa#tq>  
} e8bJ]  
SortUtil.swap(data,i,lowIndex); p]eD@3Wz  
} V+z)B+  
} AoeW<}MO  
I!D*(>  
} 3fTI&2:  
f tDV3If  
Shell排序: >t(@?*ZFT  
I9>*Yy5RNS  
package org.rut.util.algorithm.support; q04Dj-2<  
|9eY R  
import org.rut.util.algorithm.SortUtil; 2A+,. S_!x  
J3;KQ}F.I  
/** @D=`iG%  
* @author treeroot 7d)' y  
* @since 2006-2-2 ;i>E @  
* @version 1.0 |lV9?#!  
*/ W|U1AXU7/  
public class ShellSort implements SortUtil.Sort{ ]E^f8s0#V  
U^\~{X  
/* (non-Javadoc) I1O?)x~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /vu!5?S  
*/ RiG!TTa b  
public void sort(int[] data) { F\bI6gj  
for(int i=data.length/2;i>2;i/=2){ GGtrH~zx  
for(int j=0;j insertSort(data,j,i); pSFWNWQ'B  
} caht4N{T  
} \S@6@ UGv  
insertSort(data,0,1); =)8fE*[s   
} l.l~K%P'h  
/ u6$M/Cf>  
/** <Q)}  
* @param data F-0PmO~3+W  
* @param j \'*`te:{  
* @param i ,c l<74d  
*/ [{$0E=&0  
private void insertSort(int[] data, int start, int inc) { x$DJ  
int temp; V"iLeC  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); *'-^R9dN.S  
} IoOnS)  
} !@k@7~i  
} MDt?7c  
BxYA[#fd}  
} Xm'K6JH'  
1H7Q[ 2E  
快速排序: d.o FlT  
^iS:mt  
package org.rut.util.algorithm.support; ,$$$_+m\  
}4%)m  
import org.rut.util.algorithm.SortUtil; !H\GHA'DO]  
.+h pxZ  
/** Qpf]3  
* @author treeroot . *xq =  
* @since 2006-2-2 ped Yf{T  
* @version 1.0 "\?G  
*/ y:[]+  
public class QuickSort implements SortUtil.Sort{ z-gG(  
ZNeqsN{  
/* (non-Javadoc) v*'\w#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [S+-ovl  
*/ ^?[<!VBI  
public void sort(int[] data) { cLC7U?-  
quickSort(data,0,data.length-1); NI:N W-!  
} VTfaZ/e.  
private void quickSort(int[] data,int i,int j){ L-{r*ccIW  
int pivotIndex=(i+j)/2; olh3 R.M<  
file://swap #)}bUNc'  
SortUtil.swap(data,pivotIndex,j); |/s2AzDD  
{ ][7Np!y  
int k=partition(data,i-1,j,data[j]); ~')t1Ay s  
SortUtil.swap(data,k,j); \zL7 j 4  
if((k-i)>1) quickSort(data,i,k-1); \ZZy`/~z*7  
if((j-k)>1) quickSort(data,k+1,j); @$Kq<P  
o{W]mr3D  
} =XlIe{  
/** ODA#vAc!  
* @param data @ibPL+~-_  
* @param i wJ*-K-  
* @param j [ {LnE:  
* @return { BL1j  
*/ IkNt! 2s_  
private int partition(int[] data, int l, int r,int pivot) { uA`PZ|  
do{ ER1mA:8>E  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 6'! {0 5=m  
SortUtil.swap(data,l,r); =2)t1 H  
} s/H"Ab  
while(l SortUtil.swap(data,l,r); pu*u[n  
return l; 8w?\_P7QA  
} l{m~d!w`a  
MPy][^s!  
} E9 q;>)}  
D#}Yx]Q1  
改进后的快速排序: B/kn&^z$|~  
K(fLqXE%  
package org.rut.util.algorithm.support; g_c)Ts(  
yUwgRj  
import org.rut.util.algorithm.SortUtil; bTp2)a^G  
BG0M j2  
/** &})d%*n  
* @author treeroot U*"cf>dB(  
* @since 2006-2-2 vD9D:vK  
* @version 1.0 05I39/T%  
*/ 2BA9T nxC  
public class ImprovedQuickSort implements SortUtil.Sort { - :z5m+  
4@iJ|l  
private static int MAX_STACK_SIZE=4096; kS#DKo  
private static int THRESHOLD=10; cGzYW~K  
/* (non-Javadoc) 15o *r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4{WV  
*/ U]U)'  
public void sort(int[] data) { `R52{B#&/  
int[] stack=new int[MAX_STACK_SIZE]; Zbh]SF{3F  
dN/ "1%9)  
int top=-1; l~!fQ$~  
int pivot; yx w27~  
int pivotIndex,l,r; rnv7L^9^A  
[*{\R`M  
stack[++top]=0; +xBK^5/x  
stack[++top]=data.length-1; #Y>%Dr&  
;Pqyu ?  
while(top>0){ PeUd  
int j=stack[top--]; j*~dFGl)  
int i=stack[top--]; OK?3,<x  
3kqV_Pjg  
pivotIndex=(i+j)/2; <*Kh=v  
pivot=data[pivotIndex]; t^_{5  
\i;&@Kp.N  
SortUtil.swap(data,pivotIndex,j); u$=ogp =0  
w*xUuwi  
file://partition xD= qU  
l=i-1; OG^WZ.YU  
r=j; _Z66[T+M  
do{ jw(> @SXz  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 26#Jhb E+  
SortUtil.swap(data,l,r); ngY+Ym  
} &*]{"^  
while(l SortUtil.swap(data,l,r); ?}3PJVy?  
SortUtil.swap(data,l,j); j_'rhEdLP  
@f5@0A\0  
if((l-i)>THRESHOLD){ Lr?4Y  
stack[++top]=i; Ie&b <k  
stack[++top]=l-1; ]pRfY9w  
} +fP/|A8P  
if((j-l)>THRESHOLD){ v;bP8)mI  
stack[++top]=l+1; 3ES[ N.V#  
stack[++top]=j; `\F%l?aY  
} Cs[7% j  
g y e(/N+I  
} xV>iL(?  
file://new InsertSort().sort(data); [b i3%yWh  
insertSort(data); XL7;^AE^Wl  
} 9oz(=R  
/** "H="Ip!s  
* @param data x !:9c<  
*/ !` M;#  
private void insertSort(int[] data) { 3q|cZQK!1  
int temp; >4|c7z4  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); JXLWRe  
} k BiBXRt  
} l'7Mw%6{  
} 5h|m4)$  
U.hERe ~X  
} P7wqZ?  
Z ]aK'  
归并排序: aq0iNbv@  
s@ 2 0#D  
package org.rut.util.algorithm.support; oWx_O-_._  
R7B,Q(q2-  
import org.rut.util.algorithm.SortUtil; :e&n.i^  
5Q$r@&qp  
/** KM6N'x^z  
* @author treeroot Y1fy2\<'  
* @since 2006-2-2 5&?KW)6 Rz  
* @version 1.0 (3N"oE.b]  
*/ .A*VLF*m  
public class MergeSort implements SortUtil.Sort{ ia^%Wg7  
5qd_>UHp  
/* (non-Javadoc) XYb^C s;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ksu}+i,a  
*/ '6o`^u>  
public void sort(int[] data) { AvrL9D  
int[] temp=new int[data.length]; 'wz\tT^  
mergeSort(data,temp,0,data.length-1); o=-Vt,2{  
} p2Dh3)&  
t/d',Khg  
private void mergeSort(int[] data,int[] temp,int l,int r){ Z&dr0w8  
int mid=(l+r)/2; \o:ELa HY  
if(l==r) return ; $"sq4@N  
mergeSort(data,temp,l,mid); -Wlp=#9  
mergeSort(data,temp,mid+1,r); h6\3vfj^f  
for(int i=l;i<=r;i++){ <'}b*wUB  
temp=data; p<=(GY-  
} L$29L:  
int i1=l; $(@o$%d  
int i2=mid+1; "?.'{,Q  
for(int cur=l;cur<=r;cur++){ 7b&JX'`Mb  
if(i1==mid+1) #+K Kvk  
data[cur]=temp[i2++]; )D[ "M$ZA^  
else if(i2>r) af<NMgT2s~  
data[cur]=temp[i1++]; AXl!cgi  
else if(temp[i1] data[cur]=temp[i1++]; j{{~ZM  
else t['k%c  
data[cur]=temp[i2++]; 'dIX=/RZ  
} v[{8G^Z}54  
} >d8x<|D  
b^[W_y  
} *L%6qxl`V  
M5GY>3P$c  
改进后的归并排序: f0 uUbJ5  
eVw\v#gd  
package org.rut.util.algorithm.support; [j)\v^m  
]#Vo}CVP  
import org.rut.util.algorithm.SortUtil; +Lm3vj_ N  
lAdDu  
/** 1B)Y;hg6&  
* @author treeroot TL},Unq  
* @since 2006-2-2 PIZ C;K4|  
* @version 1.0 &1z)fD2  
*/ M}Nb|V09  
public class ImprovedMergeSort implements SortUtil.Sort { $!YKZ0)B'0  
0'?V|V=v  
private static final int THRESHOLD = 10; 7FmbV/&c  
qwq/Xcv  
/* iNod</+"K  
* (non-Javadoc) .FIt.XPzv  
* omM&{ }8g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) op hH9D  
*/ f._l105.  
public void sort(int[] data) { uiktdZ/f  
int[] temp=new int[data.length]; P?9nTG  
mergeSort(data,temp,0,data.length-1); u0m5JD0/  
} $%7I:  
dB@Wn!Y  
private void mergeSort(int[] data, int[] temp, int l, int r) { m#oh?@0}  
int i, j, k; )W&o?VRfO  
int mid = (l + r) / 2; xGYSi5}z  
if (l == r) EY+/.=$x  
return; XR*Q|4  
if ((mid - l) >= THRESHOLD) QS3U)ZO$@  
mergeSort(data, temp, l, mid); ]43alf F#  
else uYFMv=>j  
insertSort(data, l, mid - l + 1); %1Bn_  
if ((r - mid) > THRESHOLD) [Q4_WKI0T  
mergeSort(data, temp, mid + 1, r); wYZT D*A2h  
else C=fsJ=a5;  
insertSort(data, mid + 1, r - mid); )^4ko  
3gb|x?  
for (i = l; i <= mid; i++) { J+Q+&-a  
temp = data; P!kw;x  
} \Sg<='/{L;  
for (j = 1; j <= r - mid; j++) { q=|R89  
temp[r - j + 1] = data[j + mid]; H@V 7!d  
} sK+ (v  
int a = temp[l]; *_`76`cz%X  
int b = temp[r]; &^ V~cJ  
for (i = l, j = r, k = l; k <= r; k++) { _i5mC,OffN  
if (a < b) { U?gl"6x  
data[k] = temp[i++]; yJ%t^ X_  
a = temp; <&4nOt  
} else { 9 |' |BC  
data[k] = temp[j--]; >; aCf#q  
b = temp[j]; |#{-.r6Y]  
} EQ4#fAM)  
} G+0><,S  
} 9]"S:{KSCn  
ac9qj  
/** v @:~mwy  
* @param data 94\t1fE  
* @param l 2ck 4C/ h  
* @param i pX@Si3G`  
*/ m23+kj)+VY  
private void insertSort(int[] data, int start, int len) { g3Z:{@m  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Ck: 9gn  
} pgT9hle/  
} m9Ax\lf  
} OFA{ KZga  
}  3P1&;  
~ |6dH  
堆排序: P` #QGZ>  
[r(Qs|  
package org.rut.util.algorithm.support; r#A_RZ2~@  
7KU~(?|:h  
import org.rut.util.algorithm.SortUtil; 7c-Gm R2  
iZaeoy  
/** g?B3!,!9  
* @author treeroot MU'@2c  
* @since 2006-2-2 zF8'i=b&  
* @version 1.0 PocYFhWQ`  
*/ qD#VbvRc9+  
public class HeapSort implements SortUtil.Sort{ bp#:UUO%S  
2R]&v;A  
/* (non-Javadoc) J{`eLmTu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !22yvT.;[  
*/ SyO79e*t  
public void sort(int[] data) { 6xoq;=o  
MaxHeap h=new MaxHeap(); 'n0 .#E_  
h.init(data); d6`OXTD  
for(int i=0;i h.remove(); 3\AM=`  
System.arraycopy(h.queue,1,data,0,data.length); .e @>   
} LOr|k8tL%  
,vV ]"f  
private static class MaxHeap{ 3o*FPO7?  
ZU^I H9  
void init(int[] data){ I^D0<lHl~  
this.queue=new int[data.length+1]; w1r$='*I  
for(int i=0;i queue[++size]=data; 'CXRG$D  
fixUp(size); %K(0W8&  
} 1j0-9Kg'  
} z>;$im   
H6 &7\Wbk  
private int size=0; Gih[i\%Q  
_tAQ=eBO  
private int[] queue; mf' ]O,  
eWvo,4  
public int get() { MAqLIf<G  
return queue[1];  QV qK  
} QK; T~ _k  
0)|Q6*E>  
public void remove() { w%dL 8k  
SortUtil.swap(queue,1,size--); PmR*}Aw  
fixDown(1); Ri#H.T<'  
} B@O@1?c[  
file://fixdown at6149B\)  
private void fixDown(int k) { #`;/KNp 9  
int j; WZZ4]cC  
while ((j = k << 1) <= size) { 1zftrX~v!X  
if (j < size %26amp;%26amp; queue[j] j++; ~9=aT1S|  
if (queue[k]>queue[j]) file://不用交换 +Llo81j&  
break; 0:&ZnE}##  
SortUtil.swap(queue,j,k); ~GJN@ka4%  
k = j; ?m0IehI  
} [u M-0t  
} v>A=2i*j  
private void fixUp(int k) { 4 o(bxs"  
while (k > 1) { Q7gY3flg  
int j = k >> 1; 9!U@"~yB  
if (queue[j]>queue[k]) -?6MU~"GK  
break; GX&b;N  
SortUtil.swap(queue,j,k);  U47}QDh  
k = j; vyI%3+N@  
} ,RxYd6  
} pFsc}R/0/8  
ir16   
} (*\jbK  
Vp}^NNYf  
} &v!WVa?  
pV(lhDNoQ  
SortUtil: wGsRS[  
Z5(enTy-  
package org.rut.util.algorithm; Ad$n4Ze  
is?2DcSl5  
import org.rut.util.algorithm.support.BubbleSort; pS[KBQ"F  
import org.rut.util.algorithm.support.HeapSort; {/<6v. v  
import org.rut.util.algorithm.support.ImprovedMergeSort; 7=XL!:P  
import org.rut.util.algorithm.support.ImprovedQuickSort; %7hB&[ 5  
import org.rut.util.algorithm.support.InsertSort; `^9(Ot $  
import org.rut.util.algorithm.support.MergeSort; xJs;v  
import org.rut.util.algorithm.support.QuickSort; q<#>HjC  
import org.rut.util.algorithm.support.SelectionSort; vuQ%dDxI  
import org.rut.util.algorithm.support.ShellSort; -e u]:4  
wnLi2k/Dt<  
/** !? 5U|  
* @author treeroot sZ&G%o  
* @since 2006-2-2 %\$;(#h  
* @version 1.0 1w(JEqY3h:  
*/ }/P5>F<H[  
public class SortUtil { B;K`q  
public final static int INSERT = 1; IJIzXU  
public final static int BUBBLE = 2; 8}e,%{q  
public final static int SELECTION = 3; ul f2vD  
public final static int SHELL = 4; 6t'l(E +  
public final static int QUICK = 5; f~{}zGTM:  
public final static int IMPROVED_QUICK = 6; cbYLU\!  
public final static int MERGE = 7; 9#d+RT  
public final static int IMPROVED_MERGE = 8; VOTv?Vf  
public final static int HEAP = 9; 7OCwG~_^  
;Xvp6.:  
public static void sort(int[] data) { _c$9eAe  
sort(data, IMPROVED_QUICK);  '1^B +m  
} 3jH\yXj  
private static String[] name={ k n[Y   
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ;a{:%t  
};  Ez~'^s@  
\dQx+f&t  
private static Sort[] impl=new Sort[]{ RP5+d  
new InsertSort(), gk[{2HgN  
new BubbleSort(), VdSv  
new SelectionSort(), <"D=6jqZ  
new ShellSort(), P^`duZ{T  
new QuickSort(), -u!FOD/  
new ImprovedQuickSort(), `1OgYs  
new MergeSort(), 2lKV#9"  
new ImprovedMergeSort(), ?E%ELs_Dl  
new HeapSort() R"MRnr_4K  
}; iJ' xh n  
jw}}^3.  
public static String toString(int algorithm){ ph>7?3;t  
return name[algorithm-1]; JO<wK  
} "P-lSF?T  
@H>@[+S#  
public static void sort(int[] data, int algorithm) { K_?W\Yg   
impl[algorithm-1].sort(data); klgy;jSEr  
} !+)AeDc:j  
cRd0S*QN2  
public static interface Sort { G$0c '9d*(  
public void sort(int[] data); ,j:|w+l  
} v[plT2"s  
mGUO6>g  
public static void swap(int[] data, int i, int j) { OA/WtQ5  
int temp = data; |tR OL 9b  
data = data[j]; v:Tzv^  
data[j] = temp; U7uKRv9  
} vx_o(wof  
} 4'4\ ,o  
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