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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。 San3^uX  
插入排序: mbT4K8<^  
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package org.rut.util.algorithm.support; ov;1=M~RF  
"[h9hoN  
import org.rut.util.algorithm.SortUtil; W D8  
/** 0C!f/EZK  
* @author treeroot oP >+2.i  
* @since 2006-2-2 iW u  
* @version 1.0 c_"=G#^9@i  
*/ +/O3L=QyJ  
public class InsertSort implements SortUtil.Sort{ RT C;Wj  
"06t"u<%  
/* (non-Javadoc) 7slpj8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g{ ()   
*/ -sjyv/%_  
public void sort(int[] data) { [G!#y  
int temp; 2F7(Y)  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); P^'TI[\L9  
} :/A7Z<u,  
} Ymvd3>_  
} a+mrsyM  
w?#s)z4}g  
} Cb}I-GtO  
ehTrjb3k  
冒泡排序: KC+jHk  
Ww=^P{q\  
package org.rut.util.algorithm.support; Gxhr0'  
_v6x3 Z  
import org.rut.util.algorithm.SortUtil; TXL!5, X_  
m&MAA^I  
/** jouA ]E  
* @author treeroot Q DVk7ks  
* @since 2006-2-2 r7ebFJEf  
* @version 1.0 bW-sTGjRD  
*/ %eOO8^N  
public class BubbleSort implements SortUtil.Sort{ gOy;6\/  
l+nT$IPF  
/* (non-Javadoc) 8sus$:Ry  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -UB XWl  
*/ { )g $  
public void sort(int[] data) { S( ^HIJK  
int temp; MCO2(E-  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ,ZV>"'I:  
if(data[j] SortUtil.swap(data,j,j-1); ?lca#@f(  
} AZ.$g?3w  
} WAt= T3  
} LvqWA}  
} )FpizoVq0  
a%nf )-}|  
} sOJXloeO[6  
O!G!Gq&  
选择排序: zm!M'|~@7  
Q Yg V[\&  
package org.rut.util.algorithm.support; C4aAPkcp2$  
=u-q#<h4 ;  
import org.rut.util.algorithm.SortUtil; h6b(FTC^  
H)k V8wU  
/** vf5q8/a  
* @author treeroot baoyU#X9  
* @since 2006-2-2 +)hxYLk&I  
* @version 1.0 `r'$l<(4WV  
*/ PrHoN2y5E  
public class SelectionSort implements SortUtil.Sort { KCIya[$*  
Y&<]:)  
/* \RqH"HqD  
* (non-Javadoc) W3zYE3DZf  
* h! Bg} B~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eDsB.^|l  
*/ B[3u,<opFU  
public void sort(int[] data) { jp;]dyU  
int temp; ?W>`skQ  
for (int i = 0; i < data.length; i++) { }K^v Ujl  
int lowIndex = i; IeZ9 "o h  
for (int j = data.length - 1; j > i; j--) { u69UUkG  
if (data[j] < data[lowIndex]) { {/j gB"9  
lowIndex = j; R<B5<!+  
}  + \]-"  
} '}^qz#w   
SortUtil.swap(data,i,lowIndex); zpD?5  
} c@2a)S8Y]  
} OqWm5(u&S  
Xs{PAS0  
} jddhX]>I  
+%f6{&q$  
Shell排序: n2 can  
q9wObOS$  
package org.rut.util.algorithm.support; *c\XQy  
boI&q>-6Re  
import org.rut.util.algorithm.SortUtil; DaQ+XUH?  
jGi{:}`lB  
/** .{t*v6(TP  
* @author treeroot le' Kp V  
* @since 2006-2-2 {+m8^-T  
* @version 1.0 ,CI-IR2  
*/ a>6D3n W  
public class ShellSort implements SortUtil.Sort{ Q6HghG  
A%2B3@1'q  
/* (non-Javadoc) HC} vO0X4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \HIBnkj)3n  
*/ 1c{m rsB  
public void sort(int[] data) { }N} Js*  
for(int i=data.length/2;i>2;i/=2){ 2-DG6\QX|  
for(int j=0;j insertSort(data,j,i); U)xebU.!S  
} }h sNsQ   
} DZ @B9<Zz{  
insertSort(data,0,1); DS;\24>H  
} ] s^7c  
.*f 6n|  
/** 2i0;b|-=  
* @param data _9]vlxgtG(  
* @param j -wrVEH8  
* @param i Qd~z<U l  
*/ \vJ0Mhk1  
private void insertSort(int[] data, int start, int inc) { *;)O'|  
int temp; 3"zPG~fY{  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); a{ L&RRJ  
} &XV9_{Hm  
} =IW!ZN_  
} ^r-d.1  
Qu1&$oO  
} v)T# iw[  
cxQAp  
快速排序: B~^*@5#0|  
`<|tC#<z  
package org.rut.util.algorithm.support; %*szB$ [3  
L}CU"  
import org.rut.util.algorithm.SortUtil; `Th~r&GvF  
O PzudO  
/** %.hJDX\j  
* @author treeroot ;:_AOb31N  
* @since 2006-2-2 J;NIa[a  
* @version 1.0 KJV8y"^=Q  
*/ tT!' qL.*  
public class QuickSort implements SortUtil.Sort{ bZ1*:k2  
xVw@pR;  
/* (non-Javadoc) O Bcz'f~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NTD1QJ  
*/ zBl L98  
public void sort(int[] data) { q01 L{~>bz  
quickSort(data,0,data.length-1); P))BS  
} 0VcHz$ 6  
private void quickSort(int[] data,int i,int j){ "b~C/-W I  
int pivotIndex=(i+j)/2; umWs8-'Uw  
file://swap ">.tPn  
SortUtil.swap(data,pivotIndex,j); mW4Cc1*  
YnuY/zDF  
int k=partition(data,i-1,j,data[j]); *1Bq>h:  
SortUtil.swap(data,k,j); (D%vN&F  
if((k-i)>1) quickSort(data,i,k-1); -N% V5 TN  
if((j-k)>1) quickSort(data,k+1,j); <!g]q1  
SGSyO0O  
} YTFU# F  
/** 26g]_Igq  
* @param data >t)Pcf|s  
* @param i ]7Du/)$  
* @param j Cyd/HTNh<  
* @return ]}PXN1(  
*/ < #ON  
private int partition(int[] data, int l, int r,int pivot) { ;YR /7  
do{ Gn=b_!  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot);  NdRcA  
SortUtil.swap(data,l,r); _,!0_\+i  
} e2v`  
while(l SortUtil.swap(data,l,r); Ij7P-5=<  
return l; +HBizJ9K  
} VS/M@y_./  
W]#w4Fp!  
} P4q5#r  
u+Ix''Fn#%  
改进后的快速排序: 1R3,Z8j'  
!DzeJWM|  
package org.rut.util.algorithm.support; ru@#s2  
PkrVQH9^w  
import org.rut.util.algorithm.SortUtil; #?Kw y  
0: a2ER|J  
/** ;.Bz'Q  
* @author treeroot ns%gb!FBJX  
* @since 2006-2-2 ,eBC]4)B6  
* @version 1.0 pe vXixl  
*/ {o5|(^l  
public class ImprovedQuickSort implements SortUtil.Sort { u0Wt"d-=  
<HoCt8>U  
private static int MAX_STACK_SIZE=4096; zI4rAsysL  
private static int THRESHOLD=10; o[cOL^Xd1  
/* (non-Javadoc) La )M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KR#,6  
*/ ":$4/b6  
public void sort(int[] data) { D#L(ZlD4  
int[] stack=new int[MAX_STACK_SIZE]; q4[8\Ua  
{6H[[7i  
int top=-1; S[exnZ*Y  
int pivot; -DdHl8  
int pivotIndex,l,r; ~jL%l  
0WC\u xT7  
stack[++top]=0; S~);   
stack[++top]=data.length-1; p /-du^:2  
*rmC3'}s  
while(top>0){ x6`mv8~9Db  
int j=stack[top--]; H P.=6bJWi  
int i=stack[top--]; Q"dq_8\`U  
It[51NMal  
pivotIndex=(i+j)/2; u:f ]|Q  
pivot=data[pivotIndex]; ^AH[]sE_  
gLX<> |)*  
SortUtil.swap(data,pivotIndex,j); <4; nq~  
04-_ K  
file://partition HpEd$+Mz  
l=i-1; 9$\s v5  
r=j; g8N"-j&@  
do{ :oZ<[#p"*  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 6p4BsWPx  
SortUtil.swap(data,l,r); M5h r0 R{  
} IFTNr2I  
while(l SortUtil.swap(data,l,r); UON=7}=$&  
SortUtil.swap(data,l,j); = g{I`u  
`f;w  
if((l-i)>THRESHOLD){ $_"u2"p  
stack[++top]=i; Mwnr4$]  
stack[++top]=l-1; 0~fjY^(  
} qUd7O](b=?  
if((j-l)>THRESHOLD){ AB'+6QU9k  
stack[++top]=l+1; d$3rcH1  
stack[++top]=j; h p|v?3(  
} &`I(QY  
T&_&l;syA  
} F,Q;sq  
file://new InsertSort().sort(data); 3P6O]x<-?  
insertSort(data); %3a-@!|1<  
} 'IX1WS&\"  
/** L*Z.T^h  
* @param data 3[ [oAp  
*/ DzGUKJh6  
private void insertSort(int[] data) { ~pRgTXbz  
int temp; #SHeK 4  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); hN2A%ds*(j  
} A4tk</A  
} @wcF#?J  
} 309 pl  
O6hzOyNX@  
} /xk7Z q  
pJ] Ix *M  
归并排序: 0(7 IsG=t  
>}V?GK36  
package org.rut.util.algorithm.support; tVRN3fJH  
`3F#k[IR  
import org.rut.util.algorithm.SortUtil; BX?DI-o^h  
_iJ~O1qx,w  
/** 8z1z<\  
* @author treeroot j9NF|  
* @since 2006-2-2 b)I-do+  
* @version 1.0 5!F;|*vC8  
*/ LDjtkD.r  
public class MergeSort implements SortUtil.Sort{ 5*%Gh&)  
wmr?ANk  
/* (non-Javadoc) ^Gk`n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zTg\\z;  
*/ XZIapT  
public void sort(int[] data) { '|IcL1c=I  
int[] temp=new int[data.length]; l ;:IL\*1I  
mergeSort(data,temp,0,data.length-1); }Z"iW/?"  
} FW|& iS$  
u(f   
private void mergeSort(int[] data,int[] temp,int l,int r){ jA{5)-g  
int mid=(l+r)/2; dQj/ Sr  
if(l==r) return ; i5}Zk r  
mergeSort(data,temp,l,mid); DO: ,PZX  
mergeSort(data,temp,mid+1,r); J9mK9{#q  
for(int i=l;i<=r;i++){ ?#K.D vGJ  
temp=data; *C*ZmC5  
} n-ffX*zA(  
int i1=l; uE's&H  
int i2=mid+1; 4EqThvI{  
for(int cur=l;cur<=r;cur++){ }93kHO{  
if(i1==mid+1) C^ )Imr  
data[cur]=temp[i2++]; z By%=)`  
else if(i2>r) ;R*-cm  
data[cur]=temp[i1++]; <VxA&bb7c  
else if(temp[i1] data[cur]=temp[i1++]; D^6*Cwb  
else XG/xMz~  
data[cur]=temp[i2++]; ^+m`mcsE  
} LE8<JMB  
} *kLFs|U  
/L^g. ~  
} b&rBWp0#  
G WIsT\J  
改进后的归并排序: ;b{#$#`=  
]pR?/3  
package org.rut.util.algorithm.support; arL>{mj  
7H3v[ f^Q  
import org.rut.util.algorithm.SortUtil; ]M5~p^ RB  
R0-0  
/** bB_LL  
* @author treeroot Jp=qPG|  
* @since 2006-2-2 ?J:w,,4m  
* @version 1.0 <[db)r~c  
*/  vywB{%p  
public class ImprovedMergeSort implements SortUtil.Sort { &O' W+4FAc  
s/"bH3Ob9v  
private static final int THRESHOLD = 10; H a!,9{T  
M/<ypJ  
/* jR/Gd01)  
* (non-Javadoc) w5m /[Z  
* wp?:@XM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kd'b_D[$H  
*/ xk,Uf,,>  
public void sort(int[] data) { x4q}xwH  
int[] temp=new int[data.length]; # ?2*I2_  
mergeSort(data,temp,0,data.length-1); ]F y' M  
} ly%^\jW  
o,rF15  
private void mergeSort(int[] data, int[] temp, int l, int r) { KR?;7*qF  
int i, j, k; !PA:#]J  
int mid = (l + r) / 2; 6F (z6_<  
if (l == r) 0>|q[SC  
return; ^EUR#~b5iy  
if ((mid - l) >= THRESHOLD) MLdwf}[  
mergeSort(data, temp, l, mid); wsQnjT>  
else qf0pi&q  
insertSort(data, l, mid - l + 1); Nh!`"B2B  
if ((r - mid) > THRESHOLD) X?_rD'3  
mergeSort(data, temp, mid + 1, r); WzzA:X  
else  ew1L+  
insertSort(data, mid + 1, r - mid); 5eTA]  
bg zd($)u  
for (i = l; i <= mid; i++) {  y<Koc>8  
temp = data; KtQs uL%  
} IO\1nB$0nb  
for (j = 1; j <= r - mid; j++) { N'2?Zb  
temp[r - j + 1] = data[j + mid]; J||g(+H>  
} HJl?@& l/  
int a = temp[l]; 5sY $  
int b = temp[r]; ]KFh 1  
for (i = l, j = r, k = l; k <= r; k++) { [5P-K{Ko  
if (a < b) { hY4#4A`I  
data[k] = temp[i++]; wC{sP"D  
a = temp; Lvf<g}?4  
} else { Z[@ i/. I  
data[k] = temp[j--]; t utk*|S  
b = temp[j]; e1Db +QBV  
} e4YfJd  
} @D9O<x  
} p cLKE ZK  
31G:[;g  
/** +~"IF+T RH  
* @param data Exw d,2>  
* @param l JO|j?%6YY  
* @param i 6(E4l5 %  
*/ )la3GT*1mS  
private void insertSort(int[] data, int start, int len) { RE t&QP  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); x]7:MG$  
} :BxO6@>Xc  
} H1-DK+Q:  
} BwHJr(n  
} ) 9Q+07  
,kJ'_mq  
堆排序: ,l&?%H9q  
Gpu[<Z4  
package org.rut.util.algorithm.support; s,_+5ukv  
K28L(4)  
import org.rut.util.algorithm.SortUtil; %B@NW2ZQ[  
.F ?ww}2p]  
/** /gu VA  
* @author treeroot ?xaUWD  
* @since 2006-2-2 ;2kQ)Bq"  
* @version 1.0 2VV>?s  
*/ 6/;YS[jX  
public class HeapSort implements SortUtil.Sort{ >v,X:B?+FL  
L\4rvZa  
/* (non-Javadoc)  hlVC+%8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U 4d7-&U  
*/ 5]i#l3")  
public void sort(int[] data) { = o(}=T>:"  
MaxHeap h=new MaxHeap();  m}yu4  
h.init(data); Ny"9!3V   
for(int i=0;i h.remove(); R6<'J?k  
System.arraycopy(h.queue,1,data,0,data.length); ( %7V  
} ?,VpZ%Df2  
B>i%:[-e  
private static class MaxHeap{ ]:f.="  
7T[L5-g  
void init(int[] data){ +vZYuEq_  
this.queue=new int[data.length+1]; M.H!dZ  
for(int i=0;i queue[++size]=data; @6ckB (  
fixUp(size); z_(l]Ern}  
} :+ YHj )mN  
} N)(m^M(~0  
*l d)nH{  
private int size=0; *c#DB{N  
D0#U*tq;  
private int[] queue; m& AbH&;  
ok--Jyhv#  
public int get() { l4kqz.Z-g  
return queue[1]; y6am(ugE  
} _U*R_2aV  
di_N}x*  
public void remove() { N_D=j 6B  
SortUtil.swap(queue,1,size--); 23LG)or.JC  
fixDown(1); >%"TrAt  
} e`+  
file://fixdown !T`g\za/  
private void fixDown(int k) { >$}Mr%49  
int j; k&yBB%g  
while ((j = k << 1) <= size) { q|YnNk>1  
if (j < size %26amp;%26amp; queue[j] j++; `mkOjsj &  
if (queue[k]>queue[j]) file://不用交换 heF'7ezv#  
break; 4-O.i\1q  
SortUtil.swap(queue,j,k); uYTyR;a  
k = j; lxTqGwx  
} s,J\nbj0h  
} _u-tRHh|A  
private void fixUp(int k) { #5;4O{  
while (k > 1) { 5UL5C:3R9  
int j = k >> 1; !OV+2suu1  
if (queue[j]>queue[k]) 3Mh_ &%!O  
break; +L?;g pVE&  
SortUtil.swap(queue,j,k); ;|rFP  
k = j; 5'Mw{`  
} Md:*[]<~  
} }8.$)&O$^  
} 2y"F@{T  
} o) eW5s,6  
R{4[.  
} PClwGO8'&  
4>=Y@z  
SortUtil: H_JT"~_2  
0} \;R5a<  
package org.rut.util.algorithm; ^YPw'cZZ&  
0/+TQD!L  
import org.rut.util.algorithm.support.BubbleSort; arPqVMVr  
import org.rut.util.algorithm.support.HeapSort; ^oHK.x#{  
import org.rut.util.algorithm.support.ImprovedMergeSort; p'SY 2xq-,  
import org.rut.util.algorithm.support.ImprovedQuickSort; BGB.SN#q+  
import org.rut.util.algorithm.support.InsertSort; T7G{)wm  
import org.rut.util.algorithm.support.MergeSort; MM+nE_9lV  
import org.rut.util.algorithm.support.QuickSort; +DT)7 koA  
import org.rut.util.algorithm.support.SelectionSort; =WOYZ7  
import org.rut.util.algorithm.support.ShellSort; >>7m'-k%D  
l&Fx< W  
/** n@e|PWu  
* @author treeroot VN4H+9E  
* @since 2006-2-2 YsjTC$Tx,  
* @version 1.0 M\9p-%"L  
*/ FCr>$  
public class SortUtil { z2V_nkI  
public final static int INSERT = 1; bO{wQ1)Z_  
public final static int BUBBLE = 2; [=xO>  
public final static int SELECTION = 3; i3y>@$fRL\  
public final static int SHELL = 4; Z"<tEOs/En  
public final static int QUICK = 5; | \JB/x  
public final static int IMPROVED_QUICK = 6; ;lb@o,R :  
public final static int MERGE = 7; T*C]:=)  
public final static int IMPROVED_MERGE = 8; i%_nH"h  
public final static int HEAP = 9; Hb *&&  
T%:W6fH7  
public static void sort(int[] data) { \xaK?_hv  
sort(data, IMPROVED_QUICK); 3>sA_  
} C}GOwvAL>  
private static String[] name={ xBcE>^{1.  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" bjJ212J  
}; bc|DC,n?  
*e05{C:kS  
private static Sort[] impl=new Sort[]{ 6ax|EMw  
new InsertSort(), ]q@6&]9  
new BubbleSort(), Hlq#X:DCn  
new SelectionSort(), JuT~~Z  
new ShellSort(), D@>^_cTO24  
new QuickSort(), F\;G'dm  
new ImprovedQuickSort(), 5zF7yvS.w  
new MergeSort(), j!P]xl0vOZ  
new ImprovedMergeSort(), s k_Q\0a  
new HeapSort() e'zG=  
}; uD''0G\  
*G#W],~0  
public static String toString(int algorithm){ v5GV"qY  
return name[algorithm-1]; u>.qhtm[  
} x-/`c  
/_P5U E(  
public static void sort(int[] data, int algorithm) { bEE'50 D  
impl[algorithm-1].sort(data); XaV h.  
} Q_F8u!qrZ  
+mN]VO*y  
public static interface Sort { IOsitMOX:  
public void sort(int[] data); gG^K\+S  
} n LZ  
$!x8XpR8s  
public static void swap(int[] data, int i, int j) { gI qYIt  
int temp = data; N(W ;(7  
data = data[j]; q]Cmaf(  
data[j] = temp; io$!z=W  
} S& % G B  
} kmm1b (  
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