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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。 &GP(yj]  
插入排序: $p0nq&4c  
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package org.rut.util.algorithm.support; RaJTya^  
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import org.rut.util.algorithm.SortUtil; pi"H?EHk  
/** ;.>*O oe&  
* @author treeroot PF{uaKWk  
* @since 2006-2-2 fzSkl`K}  
* @version 1.0 G]K1X"W?  
*/ Ln& pe(c  
public class InsertSort implements SortUtil.Sort{ jRK}H*uem  
 >G]JwO  
/* (non-Javadoc) Y+?QHtZL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "<CM 'R  
*/ *[Hp&6f  
public void sort(int[] data) { 6V;Dcfvi  
int temp; jl,gqMn"V  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7H7 Xbi@  
} ? x%s j  
} ZbFD|~[ V  
} W{6QvQD8  
/Ew()>Y  
} d<m;Q}/l&h  
B>2=IZ  
冒泡排序: _}l(i1o,/  
A2'i~_e  
package org.rut.util.algorithm.support; $S6(V}yh  
-)V0D,r$[  
import org.rut.util.algorithm.SortUtil; )PYPlSQ*V  
AiqKf=  
/** y1V}c ,  
* @author treeroot 6#Vl3o(E|  
* @since 2006-2-2 9jal D X  
* @version 1.0 7e<=(\(yl  
*/ >.?yz   
public class BubbleSort implements SortUtil.Sort{ E?w#$HS  
|IAx!Z-P  
/* (non-Javadoc) zEQ]5>mG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f|> rp[Gk  
*/ xdSMYH{2A  
public void sort(int[] data) { |_53So: g  
int temp; ;}B=g/C  
for(int i=0;i for(int j=data.length-1;j>i;j--){ (j8*F Bq  
if(data[j] SortUtil.swap(data,j,j-1); Jz8P':6[  
} Wv4$Lgr  
} _/>ktYo:  
} bb_elmb)n  
} u(9pRr L  
5hE#y]pfN  
} {z oGwB  
)<x9t@$  
选择排序: a~2Jf @I3  
KloX.y)q  
package org.rut.util.algorithm.support; xU;SRB   
`I7s|9-=  
import org.rut.util.algorithm.SortUtil; '(K4@[3t  
V9[_aP;  
/** U]Q 5};FK  
* @author treeroot =Uk #7U"P  
* @since 2006-2-2  (?Ku-k  
* @version 1.0 ~ <1s[Hu  
*/ |gkNhxzB  
public class SelectionSort implements SortUtil.Sort { |q4=*Xq  
c!@|y E,  
/* A rE~6X  
* (non-Javadoc) pj%]t  
* shw?_#?1dy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @3n!5XM{EE  
*/ $HwF:L)*  
public void sort(int[] data) { SU%O\ 4Ty  
int temp; / `cy4<  
for (int i = 0; i < data.length; i++) { qkfof{z  
int lowIndex = i; GW {tZaB  
for (int j = data.length - 1; j > i; j--) { #19O5  
if (data[j] < data[lowIndex]) { J>X@g;  
lowIndex = j; .XgY&5Qk  
} } W]A`-Jv  
} ij:xr% FJ  
SortUtil.swap(data,i,lowIndex); Q & /5B  
} m03dL^(   
} **P P  
-3(*4)h7  
} Qi\]='C  
g?v/ u:v>W  
Shell排序: t|>P9lX@  
%lbvK^  
package org.rut.util.algorithm.support; / 0$ !.  
jJ"(O-<)D  
import org.rut.util.algorithm.SortUtil; l&\y]ZV={  
W,8Uu1X =  
/** x`?>j$  
* @author treeroot [fCnq  
* @since 2006-2-2 mBIksts5h  
* @version 1.0 P^o@x,V!&  
*/ Xf ^_y(?  
public class ShellSort implements SortUtil.Sort{ t tr`  
!ak760*A  
/* (non-Javadoc) ;(mNjxA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *v#V%_o  
*/ RAa1^Qb  
public void sort(int[] data) { T T 3 6Y  
for(int i=data.length/2;i>2;i/=2){ bV:<%l]  
for(int j=0;j insertSort(data,j,i); Jd `Qa+  
}  U :x;4  
} -[!t=qi  
insertSort(data,0,1); 2KO`+  
} wv3*o10_w8  
q%d,E1  
/** ^vm6JWwN0B  
* @param data "E<+idoz  
* @param j v2gk1a &  
* @param i !4v>|tq!  
*/ Ot.v%D`e 5  
private void insertSort(int[] data, int start, int inc) { g mWwlkf9  
int temp; = y^5PjN  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); o(}%b8 K  
} C D6N8n]  
} kjQW9QJ<  
} &qY]W=9uK  
F<h+d917  
} {$t*XTY6R  
%1 RWF6  
快速排序: [PXq<ST  
#P!<u Lc%  
package org.rut.util.algorithm.support; Sg%s\p]N_#  
h [Sd3Z*  
import org.rut.util.algorithm.SortUtil; iWWtL  
6RIbsy  
/** ; Ows8  
* @author treeroot z-3.%P2g  
* @since 2006-2-2 U6|T<bsOl  
* @version 1.0 l4mRNYv)z  
*/ mUl0D0#  
public class QuickSort implements SortUtil.Sort{ f>xi (0  
;HYEJ3  
/* (non-Javadoc) IAbQgBvUD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ta5_k&3N  
*/ NHUJ:j@  
public void sort(int[] data) { 1mHS -oI9J  
quickSort(data,0,data.length-1); }.s%J\ckx  
} Q(A$ >A  
private void quickSort(int[] data,int i,int j){ Dl~(NLM  
int pivotIndex=(i+j)/2; `3? HQ2n  
file://swap h}nS&.  
SortUtil.swap(data,pivotIndex,j); %yc-D]P/  
?=)lbSu K  
int k=partition(data,i-1,j,data[j]); Y8%l)g  
SortUtil.swap(data,k,j); $XcH.z  
if((k-i)>1) quickSort(data,i,k-1); AJ}m2EH  
if((j-k)>1) quickSort(data,k+1,j); B T}l"  
a Z)1SX`D  
} CN` ~DD{  
/** S;t`C~l\  
* @param data 3S#p4{3   
* @param i <!G\%C  
* @param j A *:| d~  
* @return feS$)H9-  
*/ % u VTf  
private int partition(int[] data, int l, int r,int pivot) { e[Vk+Te7  
do{ tz?3R#rM  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 4V{&[ Z  
SortUtil.swap(data,l,r); "{+2Q  
} y(iq  
while(l SortUtil.swap(data,l,r); ->OVNmCB`+  
return l; nT01B1/<]  
} %hmRh~/&  
&=S:I!9;;  
} J9t?;3  
1D)0\#><  
改进后的快速排序: hMz)l\0  
f tl$P[T  
package org.rut.util.algorithm.support; e*`ht+  
z3 ^_C`(F  
import org.rut.util.algorithm.SortUtil; 'aV'Am+:  
-B/'ArOo]  
/** S W6oaa81  
* @author treeroot .>r3ZwrE'  
* @since 2006-2-2 V= &M\58  
* @version 1.0 _U LzA  
*/ [f { qb\  
public class ImprovedQuickSort implements SortUtil.Sort { X}]A_G  
OqRRf  
private static int MAX_STACK_SIZE=4096; SAitufS  
private static int THRESHOLD=10; 7l/ZRz }1  
/* (non-Javadoc) p<\!{5:   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &N=vs  
*/ QEut@L  
public void sort(int[] data) { NCT:!&  
int[] stack=new int[MAX_STACK_SIZE]; N3lz-vP-  
o(DG 3qk  
int top=-1; DC/Czkv9  
int pivot; {U>N*&_`  
int pivotIndex,l,r; fD(r/~Vu  
x%k@&d;z  
stack[++top]=0; P RUl-v  
stack[++top]=data.length-1; rqp]{?33  
p-\->_9)y`  
while(top>0){ 6&;GC<].(y  
int j=stack[top--]; KX;JX*)J  
int i=stack[top--]; J,?F+Qji&=  
U8NX%*oW  
pivotIndex=(i+j)/2; )HI\T];  
pivot=data[pivotIndex]; m3o -p   
;!VxmZ:j[  
SortUtil.swap(data,pivotIndex,j); DOGGQ$0  
|qj"p  
file://partition V'>Plb.A  
l=i-1; ig YYkt  
r=j; SWhzcqp  
do{ -l_B;Sb:e  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); PW5)") z  
SortUtil.swap(data,l,r); Iw.!*0$  
} |cnps$fk~  
while(l SortUtil.swap(data,l,r); 9.xRDk  
SortUtil.swap(data,l,j); #C.  
#Ff8_xhP2  
if((l-i)>THRESHOLD){ <%d!Sk4  
stack[++top]=i; xk/-TXB 0  
stack[++top]=l-1; ;a>u7rw  
} W,H8B%e  
if((j-l)>THRESHOLD){ KIv_ AMr  
stack[++top]=l+1; >`WfY(Lq  
stack[++top]=j; %x{kd8>u!  
} / yBrlf  
/W*Z.  
} ]&P\|b1*g  
file://new InsertSort().sort(data); {K"hlu[  
insertSort(data); H"UJBO>$  
} f@hM^%  
/** c'3N;sZ*B  
* @param data 45wtl/^9  
*/ +a N8l1  
private void insertSort(int[] data) { rOE: ap|KL  
int temp; ffR%@  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Y-y yg4JH  
} O<V 4j,  
} %1jcY0zEQ  
} pZ \7!rON  
~ffT}q7^  
} @q>Hl`a  
l"}_+5  
归并排序: NZ i3U  
g<;::'6  
package org.rut.util.algorithm.support; ,e9M%VIu6[  
IaSpF<&Y;  
import org.rut.util.algorithm.SortUtil; 2'-"&d+ O  
d,l?{ Ln  
/** *5k40?w  
* @author treeroot ]OdZlZBsJ  
* @since 2006-2-2 4c(Em+ 4  
* @version 1.0 I-g/ )2  
*/ $F# 5/gDVQ  
public class MergeSort implements SortUtil.Sort{ 7mdd}L^h Z  
K.mxF,H  
/* (non-Javadoc) 7p2xst  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6*>Lud  
*/ TbNH{w|p  
public void sort(int[] data) { MaHP):~  
int[] temp=new int[data.length]; /N_:npbJF  
mergeSort(data,temp,0,data.length-1); LOi}\O8  
} wxc#)W  
I-r+1gty  
private void mergeSort(int[] data,int[] temp,int l,int r){ wz69Yw7  
int mid=(l+r)/2; |]@Pq[Hn|  
if(l==r) return ; 3Y2~HuM  
mergeSort(data,temp,l,mid); <C(o0u&/  
mergeSort(data,temp,mid+1,r); O HpV%8`  
for(int i=l;i<=r;i++){ B T"R"w  
temp=data; +ppA..1  
} a= j'G]=  
int i1=l; lD3nz<p  
int i2=mid+1; 37jxl+  
for(int cur=l;cur<=r;cur++){ :p: C  
if(i1==mid+1) {LF4_9 =  
data[cur]=temp[i2++]; CKK}Z;~:  
else if(i2>r) ]r|oNGD)G  
data[cur]=temp[i1++]; :[_ms d  
else if(temp[i1] data[cur]=temp[i1++]; 1 rhZlmf[r  
else "t.` /4R2w  
data[cur]=temp[i2++]; }}tbOD)t  
} < z2wt  
} A)C)5W  
@lE'D":?  
} / }$n_N\!)  
|0=UZK7%O  
改进后的归并排序: ,n8\y9{G  
sNo8o1Hby  
package org.rut.util.algorithm.support; i}DS+~8v  
[A,^ F0:h  
import org.rut.util.algorithm.SortUtil; @pYEzizP7  
iI IXv  
/** 'v V7@@  
* @author treeroot pCh v;  
* @since 2006-2-2 *l+Dbm,u  
* @version 1.0 + tMf&BZ  
*/ \$w kr  
public class ImprovedMergeSort implements SortUtil.Sort { P7.bn  
:NF4[c  
private static final int THRESHOLD = 10; ,?|$DY+=  
OA[e}Vn  
/* ] c7X~y  
* (non-Javadoc) Mq Ai}z%  
* vW=L{8zu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2Ckx.m&  
*/ H TOr  
public void sort(int[] data) { &2`p#riAS  
int[] temp=new int[data.length]; I} jgz  
mergeSort(data,temp,0,data.length-1); 3@gsKtA&H4  
} V|_ h[hXE  
_2!8,MX  
private void mergeSort(int[] data, int[] temp, int l, int r) { VWE>w|'  
int i, j, k; ;[Mvk6^'R  
int mid = (l + r) / 2; 9KXL6#h  
if (l == r) :h{uZ,#Gi  
return; z~ C8JY:  
if ((mid - l) >= THRESHOLD) VX$WL"A  
mergeSort(data, temp, l, mid); u##th8h4U  
else T^1 Z_|A  
insertSort(data, l, mid - l + 1); 8#7qHT;cx  
if ((r - mid) > THRESHOLD) + t5SrO!`  
mergeSort(data, temp, mid + 1, r); Tf86CH=)5  
else 1g{Pe`G,  
insertSort(data, mid + 1, r - mid); (jc& Fk  
IA@>'O  
for (i = l; i <= mid; i++) { (h3L=  
temp = data; m$W >~  
} E&P2E3P  
for (j = 1; j <= r - mid; j++) { C_Ewu*T7  
temp[r - j + 1] = data[j + mid]; 'k X8}bx  
} H&)}Z6C"  
int a = temp[l]; +P2oQ_Fk`9  
int b = temp[r]; !5o j~H  
for (i = l, j = r, k = l; k <= r; k++) { e|\xF V=4  
if (a < b) { 9 %T??-  
data[k] = temp[i++]; "=djo+y  
a = temp; pd|KIs%jl  
} else { Jay"  
data[k] = temp[j--];  yfZNL?2x  
b = temp[j]; "o&8\KSs  
} cs+3&T: ,*  
} eThaH0  
} $eYL|?P50h  
KC6Cg?y^  
/** lvO6&sF1  
* @param data e7RgA1  
* @param l K*>%,mP$i  
* @param i VVas>/0qr  
*/ 5qb93E"C  
private void insertSort(int[] data, int start, int len) { {]T?)!V m  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); @Vre)OrN#  
} 0<uek  
} S(zp_  
} M ^o_='\bE  
} {o}U"b<+Ra  
1!<t8,W4  
堆排序: KewW8H~tb  
,vR?iNd:q[  
package org.rut.util.algorithm.support; vYed_'_  
IfK~~XYG  
import org.rut.util.algorithm.SortUtil; tVAi0`DV  
ubcB <=xb  
/** 0gd`W{YP  
* @author treeroot v675C#l(  
* @since 2006-2-2 >JyS@j}  
* @version 1.0 H7zN|NdNw  
*/ jRJG .hcB5  
public class HeapSort implements SortUtil.Sort{ qoO`)<  
4&}%GH>}  
/* (non-Javadoc) u 272)@R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Bf ut mI  
*/ oac)na:O#  
public void sort(int[] data) { *F\wWg'!B  
MaxHeap h=new MaxHeap(); n i#jAwkN5  
h.init(data); 6"Uu;Q  
for(int i=0;i h.remove(); \^!;r9z=A  
System.arraycopy(h.queue,1,data,0,data.length); J9Ao*IW~  
} 1BSd9Ydj  
B9maz"lJ  
private static class MaxHeap{ XO+BZB`F  
M/N8bIC! Q  
void init(int[] data){ vO}r(kNJ  
this.queue=new int[data.length+1]; PG&t~4QM`  
for(int i=0;i queue[++size]=data; XF!L.'zH  
fixUp(size); JrzPDb`m  
} PCviQ!X  
} #e' >9T  
m$T5lKn}U?  
private int size=0; gHg=G+Q@  
 %?ElC  
private int[] queue; \|HEe{nA  
*~#I5s\s!  
public int get() { my (@~'  
return queue[1]; QAs)zl0  
} fAs b:P  
U,Z\)+-R  
public void remove() { J @Hg7Faz  
SortUtil.swap(queue,1,size--); |[SHpcq>  
fixDown(1); s L^+$Mq6  
} ]o6 ZZK  
file://fixdown vqm|D&HU  
private void fixDown(int k) { vpQ&vJfR  
int j; /ZvP.VW&  
while ((j = k << 1) <= size) { scg&"s  
if (j < size %26amp;%26amp; queue[j] j++; L;Ff(0x|  
if (queue[k]>queue[j]) file://不用交换 4ud(5m;Rle  
break; {9@D zP  
SortUtil.swap(queue,j,k); &6eo;8 `U  
k = j; 2W,9HSu8  
} vV,TT%J8D  
} y]db]pP5  
private void fixUp(int k) { F Z"n6hWA  
while (k > 1) { l_g$6\&|  
int j = k >> 1; q$:1Xkl  
if (queue[j]>queue[k]) RkYdK$|K  
break; Y%KowgP\  
SortUtil.swap(queue,j,k); `"5U b,~  
k = j; +A}t_u3<  
} fap`;AuwK  
} r w?wi}}gn  
6jq*lnA%  
} aU!}j'5Q  
^ZwZze:2  
} I\l&'Q^0@  
tOIqX0dWd  
SortUtil: on_h'?2  
 r h*F  
package org.rut.util.algorithm; Q i18q|l8v  
nBy-/BU&  
import org.rut.util.algorithm.support.BubbleSort; E'08'8y  
import org.rut.util.algorithm.support.HeapSort; )U&9d  
import org.rut.util.algorithm.support.ImprovedMergeSort; 67j kU!  
import org.rut.util.algorithm.support.ImprovedQuickSort; j~q 7v `":  
import org.rut.util.algorithm.support.InsertSort; y=Y k$:-y  
import org.rut.util.algorithm.support.MergeSort; Zxebv# 4  
import org.rut.util.algorithm.support.QuickSort; .n8R%|C5  
import org.rut.util.algorithm.support.SelectionSort; (xfc_h*xA  
import org.rut.util.algorithm.support.ShellSort; *:%&z?<Fw  
!0;AFv`\  
/** Y{} ub]i  
* @author treeroot fn}E1w  
* @since 2006-2-2 ~+Wx\:TT  
* @version 1.0 vjEDd`jYZ  
*/ K~L&Z?~|E  
public class SortUtil { K=gg<E<  
public final static int INSERT = 1; #C9f?fnM  
public final static int BUBBLE = 2; f_~T  
public final static int SELECTION = 3; ;hT3N UCA  
public final static int SHELL = 4; )D8op;Fn  
public final static int QUICK = 5; UmR)L!QT8  
public final static int IMPROVED_QUICK = 6; 8eXe b|?J  
public final static int MERGE = 7; XGa8tI[:X  
public final static int IMPROVED_MERGE = 8; l.}PxZ  
public final static int HEAP = 9; ,6^<Vg  
5rsz2;#p  
public static void sort(int[] data) { ufXWK3~\  
sort(data, IMPROVED_QUICK); "Bd-h|J  
} 9g6$"',H  
private static String[] name={ [ V.67_~  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" OyO<A3  
}; /~,*DH$)  
Ao K9=F}  
private static Sort[] impl=new Sort[]{ $kUB%\`  
new InsertSort(), P(aBJ*((~  
new BubbleSort(), @)pC3Vi^  
new SelectionSort(), 9qap#A  
new ShellSort(), fFJ7Y+^  
new QuickSort(), LUQ.=:mBR  
new ImprovedQuickSort(), od `;XVG  
new MergeSort(), 7KgaXi3r  
new ImprovedMergeSort(), EQyX!  
new HeapSort() nCYz ];".  
}; =xk>yw!O)  
FGVw=G{r  
public static String toString(int algorithm){ |4+'YgO  
return name[algorithm-1]; Ag8/%a~(  
}  Xu-~j!  
64'2ICf#m  
public static void sort(int[] data, int algorithm) { O=%Ht-kOc  
impl[algorithm-1].sort(data); Snkb^Kt  
} ffP]U4  
rN1]UaT  
public static interface Sort { ; hQ[-  
public void sort(int[] data); j/t%7,  
} 6u_i >z  
^q-%#  
public static void swap(int[] data, int i, int j) { DOWWG!mx  
int temp = data;  q0ktABB  
data = data[j]; gS FZ>v*6  
data[j] = temp; 8F[ ];LF>  
} Y-it3q'Z  
} I~l qg  
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