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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。 b~.$1oZ  
插入排序: =Z+^n ?"  
2O kID WcM  
package org.rut.util.algorithm.support; Gpu[<Z4  
s,_+5ukv  
import org.rut.util.algorithm.SortUtil; K28L(4)  
/** I$"Z\c8;  
* @author treeroot .F ?ww}2p]  
* @since 2006-2-2 /gu VA  
* @version 1.0 ?xaUWD  
*/ ;2kQ)Bq"  
public class InsertSort implements SortUtil.Sort{ 2VV>?s  
6/;YS[jX  
/* (non-Javadoc) +C`!4v\n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oywPPVxj  
*/ v/ry" W  
public void sort(int[] data) { 7@{%S~TN  
int temp; phDIUhL$z  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 1L <TzQ  
} U 4d7-&U  
} dC6>&@ VX  
} I!/EQO|  
O<vBuD2  
} 9':Ipf&x  
D*.3]3-I  
冒泡排序: va@;V+cD  
;W{z"L;nX  
package org.rut.util.algorithm.support; 5j`sJvq  
8$-MUF,  
import org.rut.util.algorithm.SortUtil; T.#_v# oM  
rRevyTs  
/** 8J,^O04<  
* @author treeroot `O7vPE  
* @since 2006-2-2 ]{tWfv|Xg8  
* @version 1.0 ]:f.="  
*/ ^?e[$}  
public class BubbleSort implements SortUtil.Sort{ >.SO2w  
<);j5)/  
/* (non-Javadoc) Uv59 XF$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M.H!dZ  
*/ IEm?'o:  
public void sort(int[] data) { u/W{JPlL  
int temp; R V#w 0 r  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Z*Ffdh>*:&  
if(data[j] SortUtil.swap(data,j,j-1); :+ YHj )mN  
} TD\TVK3P  
} -, +o*BP  
} Yh]a4l0  
} bAt!S  
9?Bh8%$  
} hEjvtfM9\-  
"0!#De  
选择排序: 0faf4LzU!  
NL.3qx  
package org.rut.util.algorithm.support; ok--Jyhv#  
]Z[3 \~?  
import org.rut.util.algorithm.SortUtil; UL ew ~j  
U$D:gZ  
/** !wAnsK  
* @author treeroot >XZ2w_  
* @since 2006-2-2 0084`&Ki  
* @version 1.0 B)/&xQu  
*/ h6~xz0,u  
public class SelectionSort implements SortUtil.Sort { =)y$&Ydj  
${Lrj}93  
/* ~/4j&IG  
* (non-Javadoc) ~JZLWTEe  
* eZ) |m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CMC p7- v  
*/ GGHMpQ   
public void sort(int[] data) { |%4nU#GoB  
int temp; h(2{+Y+  
for (int i = 0; i < data.length; i++) { Gad&3M0r  
int lowIndex = i; []\-*{^r  
for (int j = data.length - 1; j > i; j--) { ]UO zz1   
if (data[j] < data[lowIndex]) { MeD/)T{G~  
lowIndex = j; f$ /C.E  
} ++2a xRl  
} qw4wg9w5p  
SortUtil.swap(data,i,lowIndex); wB8548C}-  
} {(-TWh7V  
} *)r_Y|vg  
(q"S0{  
} #d8]cm=  
bIt{kzuQC  
Shell排序: qUe2(/TQu  
<mLU-'c@  
package org.rut.util.algorithm.support; v-$X1s  
!6.LSY,E  
import org.rut.util.algorithm.SortUtil; bjUe+ #BL  
"7 alpjwb  
/** 7<jr0)  
* @author treeroot &}gH!5L m  
* @since 2006-2-2 ]mBlXE:Z  
* @version 1.0 #)D$\0ag  
*/ BI2'NN\  
public class ShellSort implements SortUtil.Sort{ [e=k<gKH  
&hpznIN  
/* (non-Javadoc) D6_#r=08  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Jv2V@6a(  
*/ %Y`)ZKh  
public void sort(int[] data) { uF,%N   
for(int i=data.length/2;i>2;i/=2){ t2ui9:g4j  
for(int j=0;j insertSort(data,j,i);  ">|L<  
} Qm3 RXO  
} W*c^(W  
insertSort(data,0,1); o) eW5s,6  
} .Xta;Py|J  
cCtd\/ \  
/**  qzD  
* @param data IL8&MA%  
* @param j w4y ???90)  
* @param i #6AcM"  
*/ '@^<c#h]=  
private void insertSort(int[] data, int start, int inc) { aLevml2:T  
int temp; Ft2 ZZ<As  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); yOjTiVQ9  
} .R+n}>+K  
} USf;}F:-C  
} ^sZHy4-yK#  
/4BYH?*  
} %'F[(VB   
[:Odb?+`F  
快速排序: wu0J XB%&^  
&)Wm rF  
package org.rut.util.algorithm.support; Z;U\h2TY  
(B+zh  
import org.rut.util.algorithm.SortUtil; h 7\EN  
>GDN~'}^oz  
/** LrfyH"#!:  
* @author treeroot QZ-6aq\sgp  
* @since 2006-2-2 )N ^g0 L  
* @version 1.0 {7Ez7'SVV  
*/ ctC! b{S"@  
public class QuickSort implements SortUtil.Sort{ ,J-YfL^x6*  
cRPy5['E  
/* (non-Javadoc) j|% C?N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D2Kh+~l  
*/ `H;O! ty&d  
public void sort(int[] data) { C"}]PW  
quickSort(data,0,data.length-1); /Bnh%6#ab  
} & V/t0  
private void quickSort(int[] data,int i,int j){ 8-vNXvl  
int pivotIndex=(i+j)/2; 0.Nik^~  
file://swap BYDOTy/%nJ  
SortUtil.swap(data,pivotIndex,j); oX]c$<w5  
X15e~;&  
int k=partition(data,i-1,j,data[j]); S1$&  
SortUtil.swap(data,k,j); V,9UOC,Gn  
if((k-i)>1) quickSort(data,i,k-1); DOo34l6#  
if((j-k)>1) quickSort(data,k+1,j); Yv;18j*<  
k3"Y!Uha:  
} _{gRCR)  
/** q(@hYp#O"3  
* @param data 7+p=4i^@Zs  
* @param i h "r)z6Q/  
* @param j 9s6d+HhM  
* @return c/}bx52>u  
*/ *}i.,4+y   
private int partition(int[] data, int l, int r,int pivot) {  F_%&,"$  
do{ cbA90 8@s  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 8-R; &  
SortUtil.swap(data,l,r); zTt6L6:u  
} *$ 7c||J7  
while(l SortUtil.swap(data,l,r); B8G1 #V_jK  
return l; mm<rdo(`  
} T%:W6fH7  
<N;HB&mr  
} B1gBvss  
RIl+QA  
改进后的快速排序: Y_&)>;  
G&*2h2,]  
package org.rut.util.algorithm.support; )![? JXf  
{#1}YGpiVM  
import org.rut.util.algorithm.SortUtil; m]U`7!  
ny~~xQ"  
/** n.xW"omN  
* @author treeroot ?g'? Ou  
* @since 2006-2-2 *e05{C:kS  
* @version 1.0 "(d7:!%  
*/ Go_~8w0<  
public class ImprovedQuickSort implements SortUtil.Sort { )Wm:Ilq  
DbkKmv&  
private static int MAX_STACK_SIZE=4096; pEE.%U  
private static int THRESHOLD=10; 2V#(1Hc!  
/* (non-Javadoc) . ),m7"u|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _gF )aE  
*/ D@>^_cTO24  
public void sort(int[] data) { `=3:*.T*  
int[] stack=new int[MAX_STACK_SIZE]; 4jl-?  
7fJWb)z!k  
int top=-1; 1e#}+i!a  
int pivot; ON=6w_  
int pivotIndex,l,r; Hi<5jl  
"M.vu}~>  
stack[++top]=0; cA4xx^~  
stack[++top]=data.length-1; 7].FdjT.  
_6 |lw&o07  
while(top>0){ }A%Sx!7~  
int j=stack[top--]; *G#W],~0  
int i=stack[top--]; ~O}LAzGb  
v [ 4J0  
pivotIndex=(i+j)/2; @nS+!t{  
pivot=data[pivotIndex];  + >oA@z  
G? "6[w/p  
SortUtil.swap(data,pivotIndex,j); 0xM\+R~,  
0"L_0 t:  
file://partition #}W^d^-5t5  
l=i-1; y++[:M  
r=j; auTApYS53  
do{ Z;QbqMj  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); i 7 f/r.  
SortUtil.swap(data,l,r); V4 PD]5ZW  
} aD@sb o  
while(l SortUtil.swap(data,l,r); n15F4DnP  
SortUtil.swap(data,l,j); >\ :kP>U  
k/yoRv%  
if((l-i)>THRESHOLD){ /t083  
stack[++top]=i; viT/$7`AI  
stack[++top]=l-1; >I3#ALF  
} {? jr  
if((j-l)>THRESHOLD){ jR#g>MDKB  
stack[++top]=l+1; O#E]a<N`  
stack[++top]=j; /K"koV;  
} 4cni_m]  
8`*Wl;9u  
} G.,dP +i  
file://new InsertSort().sort(data); q]Cmaf(  
insertSort(data); @<tkwu  
} mRw &^7r  
/** a 8Jn.!  
* @param data +tNu8M@xFo  
*/ >?q()>l  
private void insertSort(int[] data) { jLf.qf8qm  
int temp; k!K}<sX2  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); shOQ/  
} 9air" 4  
} hSq3LoHV  
} mpBSd+ ;Z  
`2y2Bk  
} brGUK PB  
!52]'yub  
归并排序: R;gN^Yjk:  
s HSZIkB-r  
package org.rut.util.algorithm.support; {mK=Vig  
wG4=[d  
import org.rut.util.algorithm.SortUtil; G_{x)@  
p*8LS7UT  
/** PYYOC"$  
* @author treeroot S$Tc\ /{  
* @since 2006-2-2 ,25Qhz]  
* @version 1.0 `Pv[A  
*/ R g7  O  
public class MergeSort implements SortUtil.Sort{ s('<ms  
cWSiJr):r  
/* (non-Javadoc) ]VY}VALZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) : uglv6  
*/ Rdd[b?  
public void sort(int[] data) { y-gSal  
int[] temp=new int[data.length]; 0 V:z(r  
mergeSort(data,temp,0,data.length-1); 'PF?D~  
} TpLlbsd  
-9)<[>:  
private void mergeSort(int[] data,int[] temp,int l,int r){ /AX1LYlr  
int mid=(l+r)/2; 8S[`(] )  
if(l==r) return ; z^to"j  
mergeSort(data,temp,l,mid); GpV"KVJJ/  
mergeSort(data,temp,mid+1,r); 5 iUT#  
for(int i=l;i<=r;i++){ 1CFTQB>  
temp=data; o/bmS57  
} {%ZD ^YSA  
int i1=l; _6v|k}tW'Y  
int i2=mid+1; JJ5s |&}  
for(int cur=l;cur<=r;cur++){ !SAjV)  
if(i1==mid+1) GU\}}j]  
data[cur]=temp[i2++]; j'#M'W3@  
else if(i2>r) FOxMt;|M  
data[cur]=temp[i1++]; sHx>UvN6  
else if(temp[i1] data[cur]=temp[i1++]; pJ7M.C!  
else {#aW")x^#  
data[cur]=temp[i2++]; > Q+Bw"W<  
} ]42bd  
} u/3 4E=  
C~Fdo0D  
} p}%T`e=Z9  
01VEz 8[\  
改进后的归并排序: M[N$N`9  
:<l(l\MC  
package org.rut.util.algorithm.support; ]p/f@j?LU  
Q%6 1_l  
import org.rut.util.algorithm.SortUtil; <\< [J0  
C~IsYdln  
/**  -z9-f\  
* @author treeroot 4hb<EH'_&  
* @since 2006-2-2 X(nbfh?n  
* @version 1.0 E Z95)pk  
*/ j_\nsM7  
public class ImprovedMergeSort implements SortUtil.Sort { v`ckvl)(C  
b13XHR)0  
private static final int THRESHOLD = 10; &L[7jA'[J  
?YzOA${  
/* rcUXYJCh-  
* (non-Javadoc) 5(0f"zY  
* (he cvJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z yyt`  
*/ $Cw> z^}u  
public void sort(int[] data) { !e?g"5r{Bv  
int[] temp=new int[data.length]; t{n|!T&  
mergeSort(data,temp,0,data.length-1); D7.|UG?G  
} .}W#YN$  
E_-3G<rt  
private void mergeSort(int[] data, int[] temp, int l, int r) { >h+[#3vD  
int i, j, k; K]4XD1n7  
int mid = (l + r) / 2; V3 j1M?>  
if (l == r) ns|)VX   
return; )&R^J;W$M1  
if ((mid - l) >= THRESHOLD) CPssk,q~C  
mergeSort(data, temp, l, mid); \~|+*^e)  
else qP6 YnJWl  
insertSort(data, l, mid - l + 1); Uf#.b2]  
if ((r - mid) > THRESHOLD) UV}\#86!  
mergeSort(data, temp, mid + 1, r); UX3 ]cr  
else {[~cQgCI  
insertSort(data, mid + 1, r - mid); wg<UCmfu!  
%$K2$dq5  
for (i = l; i <= mid; i++) { "L yMw){  
temp = data; #-b0U[,.  
} g.![>?2$8  
for (j = 1; j <= r - mid; j++) { <BoDLvW>  
temp[r - j + 1] = data[j + mid]; Y)*5M  
} W`HO Q  
int a = temp[l]; oG5 :]/F  
int b = temp[r]; q3a`Y)aVB  
for (i = l, j = r, k = l; k <= r; k++) { FV>j !>Y  
if (a < b) { am >X7  
data[k] = temp[i++]; : tKa1vL  
a = temp; h/u>F$}c  
} else { NjT#p8d X  
data[k] = temp[j--]; 6E~T$^Q}  
b = temp[j]; v0EF?$Wo  
} >05_#{up  
} ^MJTlRUb  
} ATq)8Rm\  
hs'J'~a  
/**  wfr+-  
* @param data NHKIZx8sR  
* @param l kkfwICBI  
* @param i Q2[@yRY/z  
*/ "Uy==~  
private void insertSort(int[] data, int start, int len) { )aY^k|I  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); gG;d+s1  
} `uRf*-   
} '_)NI  
} axT-  
} L@> +iZSO  
A#&Q(g\YE  
堆排序: (ATvH_Z  
@@$%+XNY  
package org.rut.util.algorithm.support; Ta;'f7Oz  
n^O Wz4  
import org.rut.util.algorithm.SortUtil; DoV<p?U  
HD"Pz}k4  
/** mQ#E{{:H+  
* @author treeroot >y<yFO{  
* @since 2006-2-2 K}^Jf ;  
* @version 1.0 X ?p_O2#k  
*/ y>+xdD0 +  
public class HeapSort implements SortUtil.Sort{ _y~H#r9:  
.eQIU$Kw!O  
/* (non-Javadoc) V&)lS Qw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +QS7F`O  
*/ B-63IN  
public void sort(int[] data) { }T!2IaAB  
MaxHeap h=new MaxHeap(); AEx|<E0  
h.init(data); UPtWj8h  
for(int i=0;i h.remove(); xgl~4  
System.arraycopy(h.queue,1,data,0,data.length); hR;J#w  
} Mv9q-SIc[  
]KX _a1e  
private static class MaxHeap{ I{Pny/d`  
/rRQ*m_  
void init(int[] data){ b}P5*}$:9"  
this.queue=new int[data.length+1]; -OLXRc=  
for(int i=0;i queue[++size]=data; 5fGUJ[F=  
fixUp(size); \VW&z:/*pZ  
} 1iOQ8hD  
} Mp;yvatO  
j!c[$;  
private int size=0; {4\hxyw  
N_jCx*.G  
private int[] queue; r Ntc{{3_  
~i)O^CKq  
public int get() { m#[tY >Q[b  
return queue[1]; UloZo? e`  
} ;bJ2miO"e  
Ydv\a6  
public void remove() { !6:q#B*  
SortUtil.swap(queue,1,size--); F">>,Oc)U"  
fixDown(1); <,S0C\la=  
} !*8x>,/>  
file://fixdown s }P-4Sg  
private void fixDown(int k) { A=X2zm>9  
int j; {V& 2k9*  
while ((j = k << 1) <= size) { Up|\&2_  
if (j < size %26amp;%26amp; queue[j] j++; ZB-+ bY  
if (queue[k]>queue[j]) file://不用交换 .F'fBT` $  
break; D7Y5q*F  
SortUtil.swap(queue,j,k); <&'Ye[k  
k = j; QC:/xP  
} R#Z1+&='  
} Nkfu k  
private void fixUp(int k) { 1k@k2rE  
while (k > 1) { /f!_dJ^  
int j = k >> 1; #k%3Ag  
if (queue[j]>queue[k]) &dSw[C#f  
break; {},rbQ -  
SortUtil.swap(queue,j,k); HLMEB0zh^  
k = j; c`UJI$Q/  
} M4a- +T"  
} ,j~ R ^j  
xN t  
} M,[u}Rf^w  
<@C Bc:j0  
} UV>^[/^O  
#&\hgsw/T  
SortUtil: tK&.0)*=  
)2X ng_,  
package org.rut.util.algorithm; fTi,S)F'  
Xq&x<td  
import org.rut.util.algorithm.support.BubbleSort; zE V J  
import org.rut.util.algorithm.support.HeapSort; t`{^gt  
import org.rut.util.algorithm.support.ImprovedMergeSort; sV7dgvVd  
import org.rut.util.algorithm.support.ImprovedQuickSort; lj"L Q(^  
import org.rut.util.algorithm.support.InsertSort; %g(h%V9f  
import org.rut.util.algorithm.support.MergeSort; Y^gK^ ?K  
import org.rut.util.algorithm.support.QuickSort; C]UBu-]#S  
import org.rut.util.algorithm.support.SelectionSort; LX.1]T*m`  
import org.rut.util.algorithm.support.ShellSort; t" 1'B!4  
hoASrj{s  
/** _t:cDXj  
* @author treeroot o"^}2^)_SR  
* @since 2006-2-2 qQR> z  
* @version 1.0 tkdhT8_  
*/ qR<  
public class SortUtil { }+`W[h&u  
public final static int INSERT = 1; [~)i<V|qJ  
public final static int BUBBLE = 2; =$5[uI2  
public final static int SELECTION = 3; r @~T}<I  
public final static int SHELL = 4; -"5x? \.{m  
public final static int QUICK = 5; o}5:vi]  
public final static int IMPROVED_QUICK = 6; Yfy6o6*:  
public final static int MERGE = 7; $4kc i@.  
public final static int IMPROVED_MERGE = 8; XKp%7;  
public final static int HEAP = 9; 1Qf21oN{  
k>{i_`*  
public static void sort(int[] data) { uVqJl{e\  
sort(data, IMPROVED_QUICK); ovCk :Vz  
} bIizh8d?  
private static String[] name={ > 3 JU  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" *Kt7"J  
}; 1G|Q~%cv  
XzQ=8r>l  
private static Sort[] impl=new Sort[]{ @.kv",[{[  
new InsertSort(), Xj$J}A@  
new BubbleSort(), |aN0|O2  
new SelectionSort(), > c7/E  
new ShellSort(), fRT:@lV  
new QuickSort(), bi!4I<E>k  
new ImprovedQuickSort(), SPsq][5eR  
new MergeSort(), l3}n.ODA  
new ImprovedMergeSort(), HH6b{f@^  
new HeapSort() }eb%"ZH4|  
}; w0~iGr}P  
k`js~/Xv  
public static String toString(int algorithm){ 1L'[DKb'  
return name[algorithm-1]; ?w# >Cs(  
} nx=#QLi  
%R;cXs4r  
public static void sort(int[] data, int algorithm) { ]T^m>v)X  
impl[algorithm-1].sort(data); 2Z@<llsi  
} aEdF Z  
CV4V_G  
public static interface Sort { U^Z[6u  
public void sort(int[] data); 3HbHl?-UNU  
} Xkl^!,  
4PiNQ'*  
public static void swap(int[] data, int i, int j) { D4'? V Iz  
int temp = data; Bx&` $lW  
data = data[j]; 0 P/A  
data[j] = temp; $?Aez/  
} w0SzK-&  
} 7OtQK`P"A  
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