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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。 NBR'^6  
插入排序: ~}9H<K3V  
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package org.rut.util.algorithm.support; sT T455h)  
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import org.rut.util.algorithm.SortUtil; LYo7?rp  
/** oDiv9 jm  
* @author treeroot 0$dNrq  
* @since 2006-2-2 a\j\eMC  
* @version 1.0 V?=zuB?'  
*/ %!/liS  
public class InsertSort implements SortUtil.Sort{ #i#.tc  
LCm}v&~%A  
/* (non-Javadoc) QMfy^t+I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *gMP_I  
*/ 9(gOk  
public void sort(int[] data) { MicVNs  
int temp; KKTfxNxJn  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ENF@6]  
} 6!L*q  
} ) o(F*v  
} |N3 Co B  
g,]5&C T3v  
} -VT?/=Y s  
d:WhP_rK9  
冒泡排序: +o70: UF%  
*:\9 T#h  
package org.rut.util.algorithm.support; YY>Uf1}*9  
#a>!U'1|  
import org.rut.util.algorithm.SortUtil; K`83C`w.  
P\4o4MF@K  
/** +P;D}1B#I?  
* @author treeroot 7^e}|l  
* @since 2006-2-2 <cc0phr  
* @version 1.0 XA^:n+Yo  
*/ &WV 9%fI  
public class BubbleSort implements SortUtil.Sort{ e:D9;`C  
G:s:NXy^  
/* (non-Javadoc) jWm BUHCb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FQ ^^6Rl  
*/ _BA_lkN+D  
public void sort(int[] data) { |>V>6%>vK6  
int temp; 'r <BaL  
for(int i=0;i for(int j=data.length-1;j>i;j--){ dWWkO03 |  
if(data[j] SortUtil.swap(data,j,j-1); !oRm.c O  
} D`ge3f8Wi  
} ^\9G{}VY  
} . zMM86c  
} t# {>y1[29  
!d@`r1t  
} Nm.>C4  
H%gD[!^  
选择排序: S; <?nz3  
3@bjIX`=H  
package org.rut.util.algorithm.support; ]xeyXw84k  
LjAIB(*  
import org.rut.util.algorithm.SortUtil; &_^<B7aC'k  
W{/z-&  
/** FPFYH?;$  
* @author treeroot { qx,X.5$  
* @since 2006-2-2 eBKIdR%k  
* @version 1.0 ;5_S  
*/ < tq9  
public class SelectionSort implements SortUtil.Sort { -k{R<L  
W5uI(rS<6  
/* lfG's'U-z  
* (non-Javadoc) ]>i0;R ME  
* />7/S^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =KD*+.'\/  
*/ vw6FvE`lC  
public void sort(int[] data) { muq|^Hfb  
int temp; #9"_|d=l  
for (int i = 0; i < data.length; i++) { nx]b\A  
int lowIndex = i; R?Q-@N>wE  
for (int j = data.length - 1; j > i; j--) { ?LFSR  
if (data[j] < data[lowIndex]) { G{Q'N04RA  
lowIndex = j; <LZvh8  
} mR@Xt#  
} o/ 5 Fg>d  
SortUtil.swap(data,i,lowIndex); ZEJa dR  
} RN| ..zml  
} VMXXBa&  
8{<cqYCR  
} 1uQf}  
K0@7/*%  
Shell排序: Br!&Y9  
X*q C:]e  
package org.rut.util.algorithm.support; R/YL1s  
3?(p;  
import org.rut.util.algorithm.SortUtil; 7y7y<`)I5  
:_zKUv]  
/** %lmRe(M  
* @author treeroot wpI4P:  
* @since 2006-2-2 7rg[5hP T  
* @version 1.0 T480w6-@  
*/ PyF4uCn"H  
public class ShellSort implements SortUtil.Sort{ 0GVok$r@  
f}!26[_9{  
/* (non-Javadoc) JwczE9~o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?@(H. D6'v  
*/ uK5Px!  
public void sort(int[] data) { %Q~Lk]B?t  
for(int i=data.length/2;i>2;i/=2){ ::`wx@  
for(int j=0;j insertSort(data,j,i); ijYLf.R<  
} va;wQ~&  
} qZ }XjL  
insertSort(data,0,1); Y'h'8 \  
} 0/]vmDr  
?O ?~|nI  
/** &3J#"9 _S  
* @param data Q[KR,k  
* @param j l$KcS&{w9  
* @param i c.WT5|:qw  
*/ 9U*vnLB  
private void insertSort(int[] data, int start, int inc) { 0xcqX!(  
int temp; b4ivWb|`  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); X>>rvlDN  
} BI]t}7  
} WG{/I/bJ_  
} mio'm  
9@B+$~:}7  
} 2[hl^f^%,  
<,C})H?  
快速排序: T5;D0tM/  
m`"s$\fah  
package org.rut.util.algorithm.support; D ]eF3a.G  
iH=@``Z  
import org.rut.util.algorithm.SortUtil; -;*Z!|e9  
uBgHtjmae  
/** ;8Cqy80K  
* @author treeroot ,Pm/ci( s  
* @since 2006-2-2 }tPl?P'`  
* @version 1.0 `-\ "p;Hp0  
*/ -~k2Gy;E  
public class QuickSort implements SortUtil.Sort{ |O?Aj1g[c?  
 &i!]  
/* (non-Javadoc) )f rtvN7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0oMMJ6"i   
*/ TW0^wSm  
public void sort(int[] data) { 8<xy *=%  
quickSort(data,0,data.length-1); ffVYlNQ7L  
} 3R><AFMY?  
private void quickSort(int[] data,int i,int j){ (" %yV_R  
int pivotIndex=(i+j)/2; ! N p  
file://swap oH0\6:S  
SortUtil.swap(data,pivotIndex,j); =I1@O9}+i  
jp]JF h;3  
int k=partition(data,i-1,j,data[j]); AtOB'=ph*  
SortUtil.swap(data,k,j); < lrw7T  
if((k-i)>1) quickSort(data,i,k-1); )J0VB't  
if((j-k)>1) quickSort(data,k+1,j); t;'.D @  
![V- e  
} @:I/lg=Qd  
/** M{QNpoM  
* @param data .R,8<4  
* @param i OA0\b_  
* @param j 6z*L9Vy($  
* @return qC &<U  
*/ $7,dKC &  
private int partition(int[] data, int l, int r,int pivot) { 3a0C<hW  
do{ ;xc  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 6eD[)_?]y  
SortUtil.swap(data,l,r); 4$"Lf'sH6  
} PhS"tOGtX  
while(l SortUtil.swap(data,l,r); dEiX! k$#  
return l; {65X37W  
} o6R(BMwGa  
^5+-7+-S  
} Mi/_hzZ\  
)C@,mgh  
改进后的快速排序: Nvi14,q/  
4 C:YEX~  
package org.rut.util.algorithm.support; Q8n?7JB  
^9nM)[/C?  
import org.rut.util.algorithm.SortUtil; 2,\u Y}4  
}!LYV  
/** P,wJ@8lv  
* @author treeroot 0)NHjKP  
* @since 2006-2-2 l?q^j;{Dw  
* @version 1.0 P dJ*'@~i  
*/ khfE<<$=  
public class ImprovedQuickSort implements SortUtil.Sort { pLU>vQA  
i/L1KiCLx  
private static int MAX_STACK_SIZE=4096; hmo?gD<  
private static int THRESHOLD=10; L[K_!^MZ  
/* (non-Javadoc) ){} #v&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n7G$gLX  
*/ a_yV*N`D  
public void sort(int[] data) { i@RjG   
int[] stack=new int[MAX_STACK_SIZE]; }bVyvH  
SZPu"O\  
int top=-1; tv2dyC&a  
int pivot; [Dhc9  
int pivotIndex,l,r; uP$K{ )  
UnPSJ]VW  
stack[++top]=0; "J9+~)e^!  
stack[++top]=data.length-1; SXL6)pX  
pV!(#45~W  
while(top>0){ 8yo9$~u;  
int j=stack[top--]; $ ]HIYYs  
int i=stack[top--]; 9&tV#=s  
J}x5Ko@  
pivotIndex=(i+j)/2; |z~?"F6 Y<  
pivot=data[pivotIndex]; :97`IV%  
T2d pn%I  
SortUtil.swap(data,pivotIndex,j); O6pjuhMx  
&~& i >  
file://partition -4]6tt'G  
l=i-1; ]k8XLgJ  
r=j; ZBGI_9wZ  
do{ oAL-v428  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); X DX_c@U  
SortUtil.swap(data,l,r); ,'j5tU?c  
} it,%T)2H  
while(l SortUtil.swap(data,l,r); wKYfqNCH  
SortUtil.swap(data,l,j); ?aCR>AY5X  
mf3G$=[  
if((l-i)>THRESHOLD){ LP~$7a  
stack[++top]=i; Rq 7ksTo  
stack[++top]=l-1; "hvw2lyp3  
} ZFzOW  
if((j-l)>THRESHOLD){ S:d` z'  
stack[++top]=l+1; Q3D xjD  
stack[++top]=j; 8+gn Wy  
} r,}Zc W+  
Hq9(6w9w  
} 'Zzm'pC  
file://new InsertSort().sort(data); 1/n3qJyx2}  
insertSort(data); s0:1G -I  
} ,d7@*>T&  
/** +a|4XyN  
* @param data 09"~<W8  
*/ _RmrjDk  
private void insertSort(int[] data) { x .q%O1  
int temp; W% P&o}'  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^Ni)gm{?k  
} + $-a:zx`l  
} *+IUGR  
} *M*k-Z':.*  
^j` vk  
} k@2gw]y"  
I#0.72:[  
归并排序: Z-Uq89[HZ  
GgtL./m  
package org.rut.util.algorithm.support; WO{N@f^  
T \AuL  
import org.rut.util.algorithm.SortUtil; mVkn~LD:0  
=4I361oMf  
/** b{oNV-<&{  
* @author treeroot Y /+ D4^ L  
* @since 2006-2-2 p.%$  
* @version 1.0 bHP-Z9riv  
*/ #0R;^#F/  
public class MergeSort implements SortUtil.Sort{ xv2;h4{<  
;V;4#  
/* (non-Javadoc) |Mh;k 6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]X5*e'  
*/ 3EFk] X  
public void sort(int[] data) { (3-G<E  
int[] temp=new int[data.length]; 'G^=>=w|Nv  
mergeSort(data,temp,0,data.length-1); "7 l}X{b  
} \yxr@z1_b  
 lG{J  
private void mergeSort(int[] data,int[] temp,int l,int r){ I;7{b\t Q  
int mid=(l+r)/2; Rpr# ,|  
if(l==r) return ; 'e&4#VLH^  
mergeSort(data,temp,l,mid); IP >An8+  
mergeSort(data,temp,mid+1,r); :!/}*B  
for(int i=l;i<=r;i++){ <Z&gAqj 2  
temp=data; BoXCc"q[  
} %*uqtw8  
int i1=l; uJWX7UGuz  
int i2=mid+1; HGKm?'['   
for(int cur=l;cur<=r;cur++){ ;gc 2vDMv  
if(i1==mid+1) "P|G^*"~2  
data[cur]=temp[i2++]; d0xV<{,-  
else if(i2>r) @@5u{K  
data[cur]=temp[i1++]; o{ (v  
else if(temp[i1] data[cur]=temp[i1++]; d. a>(G  
else WULj@ds\~  
data[cur]=temp[i2++]; $^l=#tV  
} &a0%7ea`.S  
} F ^\v`l,  
Bj2rA.M  
} brFOQU?  
6!'yU=Z`  
改进后的归并排序: :eO]65N  
}}]Y mf  
package org.rut.util.algorithm.support; F-X>| oK>z  
& #|vGhA  
import org.rut.util.algorithm.SortUtil; rS jC/O&b  
g&[g?L  
/** Bm?Ku7}.  
* @author treeroot 9qPP{K,Pq2  
* @since 2006-2-2 +]{X-R  
* @version 1.0 C }[u[)  
*/ ir m8z|N-  
public class ImprovedMergeSort implements SortUtil.Sort { 6->b(B V $  
,lUo@+  
private static final int THRESHOLD = 10; J]N}8 0  
'FVT"M~  
/* Ia\Nj _-%L  
* (non-Javadoc) .UDZW*  
* b:JOR@O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *dTw$T#  
*/ 1Zecl);O{  
public void sort(int[] data) { A#i-C+"}  
int[] temp=new int[data.length]; ,Q:dAe[ZsX  
mergeSort(data,temp,0,data.length-1); _#+9)*A  
} .{} t[U  
I@\{6hw  
private void mergeSort(int[] data, int[] temp, int l, int r) { |&'*Z\*ya  
int i, j, k; M]2 c-  
int mid = (l + r) / 2; 7%<jZ =  
if (l == r) Ns $PS\  
return; LY>JE6zTt  
if ((mid - l) >= THRESHOLD) /t/q$X  
mergeSort(data, temp, l, mid); &><`?  
else "~ `-Jkm   
insertSort(data, l, mid - l + 1); fG{oi(T  
if ((r - mid) > THRESHOLD) 07#!b~N  
mergeSort(data, temp, mid + 1, r); Hy6Np62  
else Yv;aQF"a  
insertSort(data, mid + 1, r - mid); -lp_~)j^  
[ M'1aBx^  
for (i = l; i <= mid; i++) { zPXd]jIwV  
temp = data; :JS} (  
} *vb)d0}P  
for (j = 1; j <= r - mid; j++) { @Q^;qMy  
temp[r - j + 1] = data[j + mid]; @4|/| !  
} pr?/rXw  
int a = temp[l]; "gO5dZ\0  
int b = temp[r]; B^qB6:\t  
for (i = l, j = r, k = l; k <= r; k++) { M{H&5 9v  
if (a < b) { -7`J(f.rYC  
data[k] = temp[i++]; 4{R`  
a = temp; 83h3C EQ  
} else { v+OVZDf  
data[k] = temp[j--]; jQDxbkIuzE  
b = temp[j]; u2eq VrY  
} \Q$);:=q Q  
} gXQ)\MY  
} . FruI#99  
o]Ki+ U  
/** V OX>Sl  
* @param data P TP2QAt  
* @param l D%A-& =  
* @param i c[I,Sveq  
*/ e'6?iLpy  
private void insertSort(int[] data, int start, int len) { ..t=Y#  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 8ah]D  
} r:IU +3  
} OTm`i>rB  
} r3kI'I|bq  
} _H,RcpyJ  
6i4j(P  
堆排序: V;V9_qP,  
\5Jv;gc\\  
package org.rut.util.algorithm.support; p .HA `R>  
%F~ dmA#:  
import org.rut.util.algorithm.SortUtil; GyCpGP|AZ  
kr?| >6?  
/** A3n"zxU  
* @author treeroot -'(:Sq,4o  
* @since 2006-2-2 (}:xs,Ax  
* @version 1.0 yV. P.Q  
*/ . ~<+  
public class HeapSort implements SortUtil.Sort{ 5"Yw$DB9  
g9XtE  
/* (non-Javadoc) .EcMn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |2# Ro*  
*/ u;!Rv E8N  
public void sort(int[] data) { 8n)Q^z+ K  
MaxHeap h=new MaxHeap(); Ua]zTMI  
h.init(data); sF$m?/Kt  
for(int i=0;i h.remove(); D4\I;M^  
System.arraycopy(h.queue,1,data,0,data.length); :q=OW1^k^  
} 4Q>F4 v`  
-%.V0=G(Z  
private static class MaxHeap{ G!\x c  
1<83MO;  
void init(int[] data){ R32d(2%5K  
this.queue=new int[data.length+1]; z -D pLV  
for(int i=0;i queue[++size]=data; dUZ&Ty^{  
fixUp(size); 55,-1tWs  
} X&IY(CX  
} Q?@G>uz  
?<;<#JN  
private int size=0; ?KN_J  
Fo#*_y5\  
private int[] queue; b~gF,^w  
LPO" K"'w  
public int get() { xh0A2bw'OP  
return queue[1]; s__g*%@B b  
} Oq5k4  
V'.|IuN  
public void remove() { #7=LI\  
SortUtil.swap(queue,1,size--); St`m52V(5X  
fixDown(1); E`|qFG<  
} Q)>'fZ)  
file://fixdown H<;j&\$q  
private void fixDown(int k) { yH^*Fp8V  
int j; R 6Em^A/>  
while ((j = k << 1) <= size) { fm0 (  
if (j < size %26amp;%26amp; queue[j] j++; Xhi?b|  
if (queue[k]>queue[j]) file://不用交换 w.f [)  
break; 9YABr> ?  
SortUtil.swap(queue,j,k); $b} +5  
k = j; #pfosC[  
} i"xDQ$0G6  
} %a `dO EO  
private void fixUp(int k) { k:Q<Uanc[  
while (k > 1) { 3:Wr)>l}#  
int j = k >> 1; gwJu&HA/  
if (queue[j]>queue[k]) K }BX6dA  
break; w C"%b#(}  
SortUtil.swap(queue,j,k); CCOg1X_  
k = j; SO/]d70HG  
} #EUgb7  
} {9 O`/|  
+bW|Q>u  
} qS al~  
)v~]lk,o  
} -e>)yM `i  
Z"Oa5V6[A  
SortUtil: Vm.@qO*=  
@g~sgE}#  
package org.rut.util.algorithm; aehMLl9cl  
`'WLGQG  
import org.rut.util.algorithm.support.BubbleSort; Kf#!IY][  
import org.rut.util.algorithm.support.HeapSort; sjm79/  
import org.rut.util.algorithm.support.ImprovedMergeSort; W+?[SnHL/  
import org.rut.util.algorithm.support.ImprovedQuickSort; 9DX3]Z\7X  
import org.rut.util.algorithm.support.InsertSort; G,*s9P]1  
import org.rut.util.algorithm.support.MergeSort; ISew]R2  
import org.rut.util.algorithm.support.QuickSort; "'Uk0>d=_I  
import org.rut.util.algorithm.support.SelectionSort; B:cOcd?p  
import org.rut.util.algorithm.support.ShellSort; fx:KH:q3  
(N4(r<o;  
/** 'OCo1|iK~  
* @author treeroot ->=++  
* @since 2006-2-2 M7,MxwZ0k  
* @version 1.0 >N-%  
*/ "6Uj:9  
public class SortUtil { i5Q<~;Z+  
public final static int INSERT = 1; zi .,?Q  
public final static int BUBBLE = 2; J_ |x^  
public final static int SELECTION = 3; yan[{h]EZ  
public final static int SHELL = 4; _#m qg]W'  
public final static int QUICK = 5; bq-\'h f<  
public final static int IMPROVED_QUICK = 6; ton`ji\^  
public final static int MERGE = 7; :g[x;Q [@  
public final static int IMPROVED_MERGE = 8; {LHe 6#  
public final static int HEAP = 9; ~-wJ#E3g  
X:&p9_O@  
public static void sort(int[] data) { 0z7mre^Q  
sort(data, IMPROVED_QUICK); 7"ps#)O  
} ]xEE7H]\h  
private static String[] name={ yuEOQ\!(u  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" p]Zabky  
}; shIi,!bZ  
#%b()I_([  
private static Sort[] impl=new Sort[]{ XS 8~jBjx  
new InsertSort(), j9'XZq}  
new BubbleSort(), X@U 1Ri  
new SelectionSort(), 9t.yP;j\Y  
new ShellSort(), jSp&mD*xv  
new QuickSort(), k^c=y<I  
new ImprovedQuickSort(), es+_]:7B9  
new MergeSort(), B@inH]wq  
new ImprovedMergeSort(), wS*CcIwj  
new HeapSort() cu!bg+,zl  
};  O'|P|  
Ks2%F&\cE  
public static String toString(int algorithm){ %C0O?q  
return name[algorithm-1]; pm@Z[g  
} x*8f3^ wE  
e uHu}  
public static void sort(int[] data, int algorithm) { O>M*mTM  
impl[algorithm-1].sort(data); #UCQiQfP  
} yVQz<tX|  
R+VLoz*J6  
public static interface Sort { \Rqh|T<D  
public void sort(int[] data); r5fkt>HZ  
} 3H#/u! W  
#r)1<}_e#  
public static void swap(int[] data, int i, int j) { ugCS &  
int temp = data; h?3l  
data = data[j]; Ny,A#-?  
data[j] = temp; MI'l4<>u  
} W<|K  
} tO>OD#  
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