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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。 eGMw:H  
插入排序: CQ!D{o=  
[CHN3&l-5S  
package org.rut.util.algorithm.support; #mH28UT  
?3DL .U{  
import org.rut.util.algorithm.SortUtil; :/->m6C`0  
/** xEG:KSH  
* @author treeroot py$Gy-I~[  
* @since 2006-2-2 GUQ3XF\  
* @version 1.0 ]`-o\,lq  
*/ 0Cc3NNdz  
public class InsertSort implements SortUtil.Sort{ o=VZ7]  
bP:u`!p -i  
/* (non-Javadoc) q4:zr   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "4XjABJ4'  
*/ !@V]H  
public void sort(int[] data) { s\'t=}0q  
int temp; -/8V2dv3  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); X>dQK4!R  
} 2Jo|P A` 9  
} Xk:x=4u&  
} hj=n;,a9  
covCa)kf  
} z%fjG}z  
i (rYc  
冒泡排序: tli*3YIw  
|QrVGm@2  
package org.rut.util.algorithm.support; !le#7Kii  
El}~3|a?  
import org.rut.util.algorithm.SortUtil; ]_ LAy  
kb-XEJ}L  
/** ;180ct4  
* @author treeroot =>*}qen  
* @since 2006-2-2 _bh$ t  
* @version 1.0 >>=zkPy  
*/ 7\dt<VV  
public class BubbleSort implements SortUtil.Sort{ Sn97DCdk  
B4OFhtYE  
/* (non-Javadoc) }T%E;m-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1% @i4  
*/ gC6Gm':c  
public void sort(int[] data) { yFo8 x[  
int temp; TGpdl`k\T  
for(int i=0;i for(int j=data.length-1;j>i;j--){ =)#XZ[#F  
if(data[j] SortUtil.swap(data,j,j-1); B"7~[,he  
} a#0*#&?7@  
} &w_8E+Y Z  
} %PVu>^  
} y]Q/(O  
D$hK  
} 0Dd8c \J  
s$^ 2Cuhv  
选择排序: GWx?RIKF  
<{V{2V#  
package org.rut.util.algorithm.support; H1 ev W  
45+kwo0  
import org.rut.util.algorithm.SortUtil; MNfc1I_#  
g6q[ I8  
/** j1JdG<n  
* @author treeroot \KEmfCx'n  
* @since 2006-2-2 2%l(qf N9  
* @version 1.0 p,4S?c r>a  
*/ CyS.GdyP  
public class SelectionSort implements SortUtil.Sort { AfW:'>2  
'mU\X!- 4<  
/* =+e;BYD#!  
* (non-Javadoc) F0xm% ?  
* "t{D5{q|[k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p=Q o92 NH  
*/ FN0<iL  
public void sort(int[] data) { *XXa 9z  
int temp; k%RQf0`T  
for (int i = 0; i < data.length; i++) { .>5E 4^$%  
int lowIndex = i; ?AQR\)P  
for (int j = data.length - 1; j > i; j--) { C-2#-{<  
if (data[j] < data[lowIndex]) { eET1f8 B=L  
lowIndex = j; 5IG#-Q(6sp  
} `)jAdad-s  
} $nthMx$  
SortUtil.swap(data,i,lowIndex); mqQ//$Y   
} 1 RyvPP  
} o<S(ODOfi  
n%dh|j2u  
} (.M &nN'Ce  
f <DqA/$  
Shell排序: :JxuaM8  
\p izVt  
package org.rut.util.algorithm.support; xqVIw!J?/}  
U,9=&"e b  
import org.rut.util.algorithm.SortUtil; uoY]@.  
Nrp1`qY  
/** Yv;iduc('  
* @author treeroot 6r5<uZ9w_X  
* @since 2006-2-2 F-?s8RD  
* @version 1.0 -1F+,+m  
*/ cj3P]2B#  
public class ShellSort implements SortUtil.Sort{ } AHR7mu=  
Daf;; w  
/* (non-Javadoc) ~<_P jV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~ Q;qRx  
*/ ,|R\ Z,s  
public void sort(int[] data) { -[lOf  
for(int i=data.length/2;i>2;i/=2){ LwCf}4u"  
for(int j=0;j insertSort(data,j,i); _K>YB>W}7  
} tw]Q5:6  
} ^X?3e1om  
insertSort(data,0,1); [M.!7+$o  
} _%aJ/Y0Cy  
Pu]Pp`SP  
/** n ^C"v6X  
* @param data 9&KiG* .  
* @param j /`B:F5r  
* @param i y}lqF8s  
*/ 8z"*CJ@  
private void insertSort(int[] data, int start, int inc) { 7gbu7"Qc  
int temp; Pu|3_3^  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 7N fA)$  
} r7:4| 6E  
} xcl8q:  
} &qFy$`"  
Z:%~Al:  
} <bOi}  
$~.'Tnk)  
快速排序: >BlF< d`X  
-6>T0-  
package org.rut.util.algorithm.support; 7%^ /Jm  
OM7EmMa;  
import org.rut.util.algorithm.SortUtil; 64-;| k4F  
p#(5 ;  
/** nJo6;_MI!  
* @author treeroot Ut^ {4_EC  
* @since 2006-2-2 V> @+&q  
* @version 1.0 nx'D&, VX  
*/ -]~vE fq+T  
public class QuickSort implements SortUtil.Sort{ uY|-: =  
r5\|%5=J  
/* (non-Javadoc) ZncJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) io(Rb\#"  
*/ /aD3E"Op  
public void sort(int[] data) { sM'%apM#  
quickSort(data,0,data.length-1); *5|q_K Pt  
} <%]i7&8|  
private void quickSort(int[] data,int i,int j){ s8 0$   
int pivotIndex=(i+j)/2; ":N E I  
file://swap uz;z+Bd^  
SortUtil.swap(data,pivotIndex,j); Vu_QwWXO  
;sn]Blpq  
int k=partition(data,i-1,j,data[j]); 5QUL-*t  
SortUtil.swap(data,k,j); 7gcJ.,Z.  
if((k-i)>1) quickSort(data,i,k-1); m'.y,@^B  
if((j-k)>1) quickSort(data,k+1,j); rOd~sa-H  
mXXU{IwUe  
} g O ;oM?|  
/** "_  i:  
* @param data )>|x2q  
* @param i Z]1jg>")  
* @param j hUGP3ExC*  
* @return 6#/v:;bF  
*/ f+ Ht  
private int partition(int[] data, int l, int r,int pivot) { R<n'v.~"A  
do{ xF8^#J6>  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 0'0GAh2  
SortUtil.swap(data,l,r); I7q}<"`  
} tjTnFP/=  
while(l SortUtil.swap(data,l,r); i@p0Jnh|  
return l; Dm 0Ts~  
} +:?"P<'  
}grel5lq  
} y)e8pPDG  
VwrHD$  
改进后的快速排序: V*w~Sr%  
G :JQ_w  
package org.rut.util.algorithm.support; DqGm  
Ga1(T$ |H  
import org.rut.util.algorithm.SortUtil; lo:{T _ay  
iy\ 6e k1  
/** qTUyax  
* @author treeroot qz<>9n@o  
* @since 2006-2-2 OkaN VTB  
* @version 1.0 Gm2q`ki  
*/ w[X/|O  
public class ImprovedQuickSort implements SortUtil.Sort { qmx4hs8sh  
s/0S]P]}f  
private static int MAX_STACK_SIZE=4096; DYFfq  
private static int THRESHOLD=10; sV`!4 u7%}  
/* (non-Javadoc) 7dbGUbT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?(d<n   
*/ oi:!YVc  
public void sort(int[] data) { YZyV   
int[] stack=new int[MAX_STACK_SIZE]; -\V!f6Q  
osdl dS  
int top=-1; \&Zp/;n  
int pivot; +1o4l i  
int pivotIndex,l,r; T>2_r6;  
# %$U-ti  
stack[++top]=0; kI|7o>}<   
stack[++top]=data.length-1; /pS Y~*  
Qt`;+N(  
while(top>0){ `!A<XiAOmM  
int j=stack[top--]; gONybz6]  
int i=stack[top--]; 6z keWR  
|`,AA a  
pivotIndex=(i+j)/2; -.=:@H}r  
pivot=data[pivotIndex]; E6zSMl5b  
}lP'bu  
SortUtil.swap(data,pivotIndex,j); he\ pW5p  
LX2Re ]&  
file://partition dFVx*{6  
l=i-1; X&14;lu%p  
r=j; C_ 4(- OWq  
do{ O~ ]3.b  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); y8arFG  
SortUtil.swap(data,l,r); y1c2(K>tu  
} +l)[A{  
while(l SortUtil.swap(data,l,r); -b`O"Ck*  
SortUtil.swap(data,l,j); a*(,ydF|L  
{|D7H=f  
if((l-i)>THRESHOLD){ 8%Eau wAx  
stack[++top]=i; ]u<8j r  
stack[++top]=l-1; )~[rb<:)b  
} V|W[>/  
if((j-l)>THRESHOLD){ h1AZ+9  
stack[++top]=l+1; /c:78@  
stack[++top]=j; J=sj+:GS  
} _ ,~D]JYE  
O.Xhi+  
} /fDXO;tN  
file://new InsertSort().sort(data); f~?4  
insertSort(data); !}pvrBS  
} ews{0  
/** A$o7<Hx  
* @param data dlJc~|  
*/ ;:A/WU.^  
private void insertSort(int[] data) { 3s B9t X  
int temp; VSLi{=#  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /=IBK`  
} &~{0@/  
} I:Q3r"1  
} %  db  
V3v/h V:  
} m:x<maP# E  
mP[ZlS~"  
归并排序: z=1N}l~|*  
Zv&<r+<g  
package org.rut.util.algorithm.support; Mv\]uAT`  
*aaK_=w  
import org.rut.util.algorithm.SortUtil; &r0U9J  
T6M=BkcP  
/** X 3q2XU  
* @author treeroot ~A$y-Dt'  
* @since 2006-2-2 ~;/}D0k$x  
* @version 1.0 ^={s(B2  
*/ "l[ c/q[  
public class MergeSort implements SortUtil.Sort{ +b_o2''  
g?OC-zw  
/* (non-Javadoc) 7+;CA+;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YG K7b6  
*/ WinwPn+9  
public void sort(int[] data) { -a\[`JHi  
int[] temp=new int[data.length]; !}I+)@~\w  
mergeSort(data,temp,0,data.length-1); -?vII~a9y  
} ]Mb:zs<r  
!&#5 *  
private void mergeSort(int[] data,int[] temp,int l,int r){  ow2tfylV  
int mid=(l+r)/2; ;%B:1Z  
if(l==r) return ; teX)!N [  
mergeSort(data,temp,l,mid); '9XSz?  
mergeSort(data,temp,mid+1,r); D7|qFx;]g  
for(int i=l;i<=r;i++){ GMOnp$@H^s  
temp=data; =";G&)H-  
} V_"UiN"o  
int i1=l; !Y^3%B%  
int i2=mid+1; &MJ cLM]  
for(int cur=l;cur<=r;cur++){ 88g|(k/  
if(i1==mid+1) 0f9*=c  
data[cur]=temp[i2++]; Cc&SHG*R  
else if(i2>r) Gc*p%2c  
data[cur]=temp[i1++]; Wi<g  
else if(temp[i1] data[cur]=temp[i1++]; oxZXY]$y  
else kG>m(n  
data[cur]=temp[i2++]; ul^VGW>i  
} #M@Ki1  
} KybrSa  
\$W\[s4I  
} qW 2'?B3<  
/7LAd_P6  
改进后的归并排序: e]zd6{g[m  
~ya@ YP]';  
package org.rut.util.algorithm.support; B2T=O%  
[DD#YL\P  
import org.rut.util.algorithm.SortUtil; lcfX(~/m^  
#,CK;h9jy!  
/** "|nh=!L  
* @author treeroot E'+?7ZGWj  
* @since 2006-2-2 ^^(!>n6r^  
* @version 1.0 d*R('0z{  
*/ Xv2Q8-}w  
public class ImprovedMergeSort implements SortUtil.Sort { ;i-<dAV8B  
^u-;VoK  
private static final int THRESHOLD = 10; 0x,NMS  
pKkBA r,  
/* HApjXv!U[  
* (non-Javadoc) m5 l,Lxj  
* .1YiNmW=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Jk} Dj0o  
*/ D* QZR;D#.  
public void sort(int[] data) { @&9, 0 x  
int[] temp=new int[data.length]; RfQ*`^D  
mergeSort(data,temp,0,data.length-1); TxP8&!d  
} LXS)(-&  
ZW%;"5uVm)  
private void mergeSort(int[] data, int[] temp, int l, int r) { p(fL' J  
int i, j, k; XOT|:  
int mid = (l + r) / 2; H>Q X?>j  
if (l == r) b*TQKYT  
return; w)Z-, J  
if ((mid - l) >= THRESHOLD) ;.{J>Q/U,  
mergeSort(data, temp, l, mid); pSdtAv  
else jX&/ e'B  
insertSort(data, l, mid - l + 1); 9a$ 7$4m  
if ((r - mid) > THRESHOLD) g). IF.  
mergeSort(data, temp, mid + 1, r); 9o+e3TXp#  
else 5bo')^xa  
insertSort(data, mid + 1, r - mid); w,1&s}; g\  
4,.[B7irR  
for (i = l; i <= mid; i++) { `=P=i>,  
temp = data; BPd *@l  
} &\e8c g  
for (j = 1; j <= r - mid; j++) {  J;GYo|8  
temp[r - j + 1] = data[j + mid]; ]o ($No  
} ")i_{C,b^  
int a = temp[l]; khVfc  
int b = temp[r]; ]PQ6 em  
for (i = l, j = r, k = l; k <= r; k++) { O&evv8 6L  
if (a < b) { MuF{STE>->  
data[k] = temp[i++]; q);@iiJ-  
a = temp; cCv@f ks  
} else { "R^0eNv$  
data[k] = temp[j--]; v,Uu )Z  
b = temp[j]; 1eOQ;#OV  
} )-^[;:B\k"  
} W%@0Ym `7  
} )St`}qu;  
"@UyUL  
/** Dd'J"|jF38  
* @param data ^\g?uH6k U  
* @param l |*B9{/;4  
* @param i WSqo\]  
*/ .f9&.H#  
private void insertSort(int[] data, int start, int len) { j5!pS xOC  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); =y0h\<[  
} M.``o1b  
} r1[#_A`Yn  
} !|~yf3  
} A`nzqe#(1  
46D _K  
堆排序: =)f5JwZPG  
6r)B|~,OA  
package org.rut.util.algorithm.support; yX%NFXD  
Oid;s!-S6  
import org.rut.util.algorithm.SortUtil; O #5`mo  
/)<Xoa  
/** ~(}n d  
* @author treeroot +Uxt xl'  
* @since 2006-2-2 ?0?+~0sI  
* @version 1.0 JZ)w  
*/ V|)nU sU  
public class HeapSort implements SortUtil.Sort{ & Tkl-{I  
ZY*_x)h+#7  
/* (non-Javadoc) (97&mhs3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tZygTvK/S  
*/ ^K0oJg.E  
public void sort(int[] data) { OjsMT]  
MaxHeap h=new MaxHeap(); _-z;  
h.init(data); o'=i$Eb  
for(int i=0;i h.remove(); nZ4@g@e2  
System.arraycopy(h.queue,1,data,0,data.length); O'S9y  
} LF ;gdF%@  
Nt~G  {m  
private static class MaxHeap{ Da ]zbz%%  
;R7+6  
void init(int[] data){ UcWf O!}D  
this.queue=new int[data.length+1]; }*c[} VLN  
for(int i=0;i queue[++size]=data; x,Z:12H0  
fixUp(size);  Sr+ &  
} ntn ~=oL  
} /! M%9gu  
>'v{o{k|C  
private int size=0; $fwj8S7$  
@+hO,WXN  
private int[] queue; :oytJhxU  
wUH:l  
public int get() { ,"Nb;Yhg  
return queue[1]; Kza5_ 7p`L  
} _ uZVlu@  
{cmV{ 4Yx  
public void remove() { dC?l%,W  
SortUtil.swap(queue,1,size--); ?3do-tTp  
fixDown(1); s[%@3bY!7  
} rQ)I  
file://fixdown :8Ugz~i  
private void fixDown(int k) { m0]Lc{  
int j; 1 Ay.^f  
while ((j = k << 1) <= size) { KNSMx<GP  
if (j < size %26amp;%26amp; queue[j] j++; $u, ~183  
if (queue[k]>queue[j]) file://不用交换 < ;fI*km  
break; 8r.3t\o)X  
SortUtil.swap(queue,j,k); Yq%r\[%*  
k = j; Ur(<  ]  
} %8lWJwb7u  
} |z`AIScT  
private void fixUp(int k) { QxiAC>%K  
while (k > 1) { t]+h.  
int j = k >> 1; vlPViHF.  
if (queue[j]>queue[k]) UxvT|~"  
break; 41c4Xj?'  
SortUtil.swap(queue,j,k); cD9.L  
k = j; qjH/E6GGg  
} HJ!P]X_J1  
} .x_F4#Ka  
?-=<7 ~$  
} %)=c#H1  
>(F y6m  
} s\.\z[1  
.`^wRpa2M  
SortUtil: j5m]zh5\J=  
Dj{=Y`Tw  
package org.rut.util.algorithm; 'e8O \FOf  
u(g9-O  
import org.rut.util.algorithm.support.BubbleSort; EO"G(v  
import org.rut.util.algorithm.support.HeapSort; V BjA$.  
import org.rut.util.algorithm.support.ImprovedMergeSort; 4B@Ir)^(*  
import org.rut.util.algorithm.support.ImprovedQuickSort; >uwd3XW5  
import org.rut.util.algorithm.support.InsertSort; ]f*.C9Y  
import org.rut.util.algorithm.support.MergeSort; JxlZ,FF$@  
import org.rut.util.algorithm.support.QuickSort; v|:TYpku3  
import org.rut.util.algorithm.support.SelectionSort; nw=:+?  
import org.rut.util.algorithm.support.ShellSort; ZX0!BS  
du&9mOrr  
/** 6,(S}x YDZ  
* @author treeroot R!2E`^{Wl  
* @since 2006-2-2 vpoJ{TPO  
* @version 1.0 14yzGhA  
*/ {$'oKJy*  
public class SortUtil { dyt.( 2  
public final static int INSERT = 1; \8]("l}ms8  
public final static int BUBBLE = 2; !$#8Z".{v{  
public final static int SELECTION = 3; v(^;%  
public final static int SHELL = 4; &W N R{  
public final static int QUICK = 5; iM~qSRb#mJ  
public final static int IMPROVED_QUICK = 6; #yOn /  
public final static int MERGE = 7; @O HsM?nW  
public final static int IMPROVED_MERGE = 8; Gy!bPVe  
public final static int HEAP = 9; h/7_IuD  
Y"E*#1/  
public static void sort(int[] data) { ,ZvlK N  
sort(data, IMPROVED_QUICK); _nec6=S6(  
}  Qo+Y  
private static String[] name={ wcW}Sv[r  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ] jycg@=B  
}; vzZ"TSP  
6IKi*}  
private static Sort[] impl=new Sort[]{ =6[R,{|C  
new InsertSort(), ]GXE2A_i;  
new BubbleSort(), PGA `R  
new SelectionSort(), +g% Ah  
new ShellSort(), #fxdZm,  
new QuickSort(), i"#zb&~nF  
new ImprovedQuickSort(), k];fQ7}m<0  
new MergeSort(), JjQ9AJ?-V  
new ImprovedMergeSort(), H'x_}y  
new HeapSort() a@N 1"O  
}; c6LPqPcN  
#XeabcOQ  
public static String toString(int algorithm){ LR y&/d  
return name[algorithm-1]; 0yL%Pjn6  
} #w;%{C[D  
.>@]Im  
public static void sort(int[] data, int algorithm) { xi=Qxgx0I  
impl[algorithm-1].sort(data); Env_??xq  
} i 8:^1rHp)  
A<{&?_U  
public static interface Sort { p~dj-w  
public void sort(int[] data); jWh}cM=  
} )<_:%oB  
wg|/-q-  
public static void swap(int[] data, int i, int j) { rG{,8*  
int temp = data; 4?l:.\fB:  
data = data[j]; XvkFP'%i/  
data[j] = temp; K b z|h,<  
} xN44>3#  
} zOMU&;.\  
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