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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。 T&]-p:mg^  
插入排序: QWfSm^ t  
A2M( ad  
package org.rut.util.algorithm.support; =#W:z.w  
b}0h ()v  
import org.rut.util.algorithm.SortUtil; ( uD^_N]3  
/** f2IH2^)P  
* @author treeroot #vV]nI<MF.  
* @since 2006-2-2 a,RCK~GR  
* @version 1.0 %hYgG;22  
*/ '_.qhsS  
public class InsertSort implements SortUtil.Sort{ pz['o  
/CsP@f_Gw  
/* (non-Javadoc) 7<WS@-2I#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~CnnN[g(_  
*/ g_syGQ\  
public void sort(int[] data) { ={P`Tve  
int temp; [ZSC]w^  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); $]E+E.P  
} g[pU5%|"[  
} ZJBb% d1;  
} fIQ, }>  
Io3-\Ff  
} [d[w/@  
!9/`PcNIpy  
冒泡排序: Q NMZR  
<>\|hno}  
package org.rut.util.algorithm.support; `Fr ,,Q81\  
-GPBX?  
import org.rut.util.algorithm.SortUtil; iG6]Pr|;e  
{HEWU<5  
/** R~oJ-} iYX  
* @author treeroot mk1R~4v  
* @since 2006-2-2 I&La0g_E  
* @version 1.0 o( zez  
*/ *FC8=U2\X  
public class BubbleSort implements SortUtil.Sort{ jerU[3  
Y%"$v0D  
/* (non-Javadoc) > U?\WgE$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )9yQ C  
*/ 6J,h}S  
public void sort(int[] data) { a pa&'%7  
int temp; iLSUz j`  
for(int i=0;i for(int j=data.length-1;j>i;j--){ <7J3tn B  
if(data[j] SortUtil.swap(data,j,j-1); 2w7$"N  
} 3O$l;|SX  
} (t@)`N{  
} wz:e\ !  
} d5gwc5X  
o-RZwufZ`  
} [y`G p#  
EZB0qZIp  
选择排序: ~&)\8@2  
'69)m~B0a  
package org.rut.util.algorithm.support; W$hCI)m(  
*P*~CHx>  
import org.rut.util.algorithm.SortUtil; :[n~(~7?  
Pt5wm\  
/** x/<]/D  
* @author treeroot /r~2KZE  
* @since 2006-2-2 4%r?(C0x  
* @version 1.0 -1Li&K7  
*/ ZSQiQ2\)  
public class SelectionSort implements SortUtil.Sort { mnM]@8^G  
)?[7}(4jI  
/* c2g[w;0"  
* (non-Javadoc) [m:cO6DM,  
* _1gNU]"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Gpxp8[ {  
*/ #1J ,!seJ  
public void sort(int[] data) { wL),/i&<  
int temp; nzaDO-2!  
for (int i = 0; i < data.length; i++) { #VX]trh,  
int lowIndex = i; O6y:e #0z  
for (int j = data.length - 1; j > i; j--) { j67a?0<C2U  
if (data[j] < data[lowIndex]) { 9y6u&!PZ\  
lowIndex = j; qWr=Oiu  
} _)5E=  
} 45.ks.  
SortUtil.swap(data,i,lowIndex); /K li C\  
} O oA!N-Q  
} t!rrYBSCr  
e5bXgmyil  
} q&@s/k  
3\m !  
Shell排序: Lld45Bayb  
~>>_`;B  
package org.rut.util.algorithm.support; y p{Dl  
}>@SyE'Q  
import org.rut.util.algorithm.SortUtil; 4Y59^  
g$GGo[_0  
/** :} =lE"2  
* @author treeroot [x{$f7CEh  
* @since 2006-2-2 SV t~pE+Y  
* @version 1.0 PzKTEYJL  
*/ u|IS7>Sm  
public class ShellSort implements SortUtil.Sort{ `"CA$Se8  
GZaB z#U  
/* (non-Javadoc) xbCR4upS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ||X3g"2W9  
*/ kBk>1jn"  
public void sort(int[] data) { s*g qKQ;  
for(int i=data.length/2;i>2;i/=2){ HQ"T>xb  
for(int j=0;j insertSort(data,j,i); 'm*W<  
} QTa\&v[f  
} B;[ .u>f  
insertSort(data,0,1); ldTXW(^j  
} _0Ea 3K  
O)&W0` VY  
/** AAa7)^R  
* @param data vcQl0+&  
* @param j VCc=dME  
* @param i ^9,^ BHlC0  
*/ =A,B'n\R  
private void insertSort(int[] data, int start, int inc) { `G!HGzVx;j  
int temp; 4$VDJ  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); cu>(;=  
} }6a}8EyFP  
} b EcN_7  
} *ilh/Hd>  
)I*(yUj  
} eV}"L:bgJ  
nQV0I"f]?]  
快速排序: $#f_p-N  
1#3|PA#>  
package org.rut.util.algorithm.support; wyX3qH  
w3q'n%  
import org.rut.util.algorithm.SortUtil; mTu>S  
9+9g(6  
/** yOz6a :r  
* @author treeroot V. i{IW  
* @since 2006-2-2 &X:;B'   
* @version 1.0 =M-=94  
*/ F&!vtlV)  
public class QuickSort implements SortUtil.Sort{ ]CLM'$  
DQK?y=vf  
/* (non-Javadoc) [(Z(8{3i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^=^\=9" b  
*/ KJyCfMH&:@  
public void sort(int[] data) { A{\?]]/  
quickSort(data,0,data.length-1); X>`03?L  
} C)j/!+nh  
private void quickSort(int[] data,int i,int j){  I\_2=mL  
int pivotIndex=(i+j)/2; $i+@vbU6  
file://swap dz+!yE\f$  
SortUtil.swap(data,pivotIndex,j); RdD>&D$I  
`,SL\\%u  
int k=partition(data,i-1,j,data[j]); ,*W~M&n"m  
SortUtil.swap(data,k,j); ,&@GxiU  
if((k-i)>1) quickSort(data,i,k-1); ?l%4 P5  
if((j-k)>1) quickSort(data,k+1,j); 4F.,Y3  
U)f('zD  
} bu6Sp3g  
/** mOj; 0 R  
* @param data 8>WA5:]v  
* @param i eZa7brC|  
* @param j o3+s.7 "  
* @return rP]|`*B  
*/ _D}3``  
private int partition(int[] data, int l, int r,int pivot) { 4o M~  
do{ eEBNO*2  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); OF`J{`{r  
SortUtil.swap(data,l,r); kCEuzd=$V  
} ) ??N]V_U  
while(l SortUtil.swap(data,l,r); ;MNUT,U  
return l; hNh!H<}|m8  
} D+:s{IcL<  
nuWQ3w p[e  
} VK*_p EV,}  
RK-bsf  
改进后的快速排序: y}oA!<#3  
g]Y%c73  
package org.rut.util.algorithm.support; k%gj  
Mm*V;ADF  
import org.rut.util.algorithm.SortUtil; c&wg`1{Hal  
4GI3|{  
/** ~vt*%GN3  
* @author treeroot n.c0G`  
* @since 2006-2-2 eik_w(xPT  
* @version 1.0 bv h#Q_  
*/ }v}F8}4  
public class ImprovedQuickSort implements SortUtil.Sort { ``< #F3  
!%M,x~H  
private static int MAX_STACK_SIZE=4096; Q/3*65  
private static int THRESHOLD=10; 5B|.cOE  
/* (non-Javadoc) s"#N;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) & 'i_A%V  
*/ bL* b>R[x  
public void sort(int[] data) { Gr\jjf`  
int[] stack=new int[MAX_STACK_SIZE]; w;}5B~).  
Nb:j]U  
int top=-1; AJ>E\DK0]  
int pivot; n\D/WLvM  
int pivotIndex,l,r; `XE>Td>Bs  
Dk sn  
stack[++top]=0; Drtg7v{@\  
stack[++top]=data.length-1; M2ex 3m  
G{6@]72  
while(top>0){ )jl@ hnA  
int j=stack[top--]; Xj+_"0 #  
int i=stack[top--]; I2HV{1(i  
i/-IjgM"-  
pivotIndex=(i+j)/2; Epp>L.?r  
pivot=data[pivotIndex]; .S|T{DMQ[  
 ij:a+T  
SortUtil.swap(data,pivotIndex,j); `q]' ^EzJ  
@mZK[*Ak<*  
file://partition oy jkk  
l=i-1; j?*n@'   
r=j; $!. [R}  
do{ W=A0+t%XC  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Tv7W)?3h  
SortUtil.swap(data,l,r); K_Y{50#  
} BMO,eQcB  
while(l SortUtil.swap(data,l,r); jt}oq%Bf  
SortUtil.swap(data,l,j); SujEF` "  
VtzZ1/J E  
if((l-i)>THRESHOLD){ &TRKd)wd  
stack[++top]=i; aWimg6q  
stack[++top]=l-1; |-vyhr 0  
} 0vLx={i  
if((j-l)>THRESHOLD){ 1J1Jp|j.  
stack[++top]=l+1; *A!M0TK?i,  
stack[++top]=j; ~rO&Y{aG#  
} r6\g #}  
DZL(G [  
} i 7T#WfF  
file://new InsertSort().sort(data); :tO?+1  
insertSort(data); !]s=9(O  
} !QAndg{;D  
/**  !{V`N|0  
* @param data yx`@f8Kr  
*/ ='D%c^;O8'  
private void insertSort(int[] data) { bE% Hm!  
int temp; fhZwYx&t  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); pW8?EGO@  
} ynra%"sd  
} *-]k([wV  
} i| cA)  
%LC)sSq{H  
} Z(RsB_u5  
m`zd0IRTP  
归并排序: w7~]c,$y.  
1f^oW[w&  
package org.rut.util.algorithm.support; ,[p?u']yZz  
rkS'OC  
import org.rut.util.algorithm.SortUtil; +Q_xY>ej  
+e>G V61  
/** "Vc|D (g  
* @author treeroot bZWR. </  
* @since 2006-2-2 YdvXp/P:|  
* @version 1.0 PC@H Nto{  
*/ EhO\N\p(Q=  
public class MergeSort implements SortUtil.Sort{ pHVDug3  
zQ<&[Tuwa  
/* (non-Javadoc) W'k&DKhTqF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z{(Gib~{N  
*/ !^L}LtqHI  
public void sort(int[] data) { as 3uz  
int[] temp=new int[data.length]; _d~GY,WTdO  
mergeSort(data,temp,0,data.length-1); |:(BI5&S  
} k(>J?\iNW  
{DvWa|  
private void mergeSort(int[] data,int[] temp,int l,int r){ :.H@tBi*E  
int mid=(l+r)/2; fU.hb%m)Q\  
if(l==r) return ; .6n|hYe  
mergeSort(data,temp,l,mid); 5r8 [ "  
mergeSort(data,temp,mid+1,r); G2[2y-Rv  
for(int i=l;i<=r;i++){ 0j;|IU\  
temp=data; HSG9|}$  
} #F .8x@  
int i1=l; < :eKXH2  
int i2=mid+1; .w m<l:  
for(int cur=l;cur<=r;cur++){ ZPM7R3%V)z  
if(i1==mid+1) T5pc%%q  
data[cur]=temp[i2++]; 2mj>,kS?c  
else if(i2>r) 4mBM5Tv  
data[cur]=temp[i1++]; UlN}SddI9  
else if(temp[i1] data[cur]=temp[i1++]; /Y\q&}  
else #9"lL1  
data[cur]=temp[i2++]; b N>Ar  
} /mE:2K]C  
} \2@9k`  
J=^5GfM)J  
} $a\X(okx  
tvzO)&)$  
改进后的归并排序: hhjsg?4uL  
*X|%H-Q:H`  
package org.rut.util.algorithm.support; Dh{P23}  
FGwgSrXL7  
import org.rut.util.algorithm.SortUtil; ,V4pFQzL  
QKz2ONV=)  
/** Q(8W5Fb?  
* @author treeroot c$A}mL_  
* @since 2006-2-2 6x;"T+BSSS  
* @version 1.0 ?1]B(V9nBq  
*/ TKw>eGe  
public class ImprovedMergeSort implements SortUtil.Sort { Z-U3Tr SI  
Pd  6  
private static final int THRESHOLD = 10; *=E4|>Ul,  
IfRrl/!nw  
/* %ULd_ES^  
* (non-Javadoc) ?K}KSJ6_  
* JLyFk V/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 84Hm PPt  
*/ WFeaX7\b  
public void sort(int[] data) { U8g?   
int[] temp=new int[data.length]; q|D*H9[ke  
mergeSort(data,temp,0,data.length-1); ;NJM3g0I  
} n |,}   
S;vZXgyN?  
private void mergeSort(int[] data, int[] temp, int l, int r) { Xw^:<Nx:  
int i, j, k; d7c m?+  
int mid = (l + r) / 2; Z[j-.,Qu  
if (l == r) @qJv  
return; d<;XQ.Wo7  
if ((mid - l) >= THRESHOLD) iN`L*h  
mergeSort(data, temp, l, mid); ER$~kFE2yP  
else kS7T'[d  
insertSort(data, l, mid - l + 1); }>j1j^c1='  
if ((r - mid) > THRESHOLD) ?~VevD  
mergeSort(data, temp, mid + 1, r); Ug O\+cI  
else >y q L  
insertSort(data, mid + 1, r - mid); oWOH#w  
z#&qWO  
for (i = l; i <= mid; i++) { \}qv}hU  
temp = data; ]@1ncn7N  
} RzSN,bL R  
for (j = 1; j <= r - mid; j++) { p7O4CP>9[  
temp[r - j + 1] = data[j + mid]; bL7mlh  
} /%N~$ &wW  
int a = temp[l]; }fxH>79g  
int b = temp[r]; .^1=*j(;  
for (i = l, j = r, k = l; k <= r; k++) { .~8IW,[  
if (a < b) { &9g#Vq%   
data[k] = temp[i++]; *KV] MdS  
a = temp; qdu:kA:]  
} else { 55|$Imnf  
data[k] = temp[j--]; g(;ejKSR  
b = temp[j]; N=L urXv  
} 7~`6~qg.  
} ae1fCw3k  
} ]R]X#jm  
')FNudsC  
/** <$9AP  
* @param data X!_OOfueP8  
* @param l Kd,m;S\  
* @param i XJOo.Y  
*/ pK1(AV'L  
private void insertSort(int[] data, int start, int len) { |s`q+ U-  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); m :^,qC  
} Ox43(S0~  
} )5V1H WjU  
} C ILk  
} IX3U\_I#  
x[oYN9O  
堆排序: >"nk}@  
j+ys&pDczm  
package org.rut.util.algorithm.support; Pr/&p0@aV  
CC87<>V  
import org.rut.util.algorithm.SortUtil; nocH~bAf2  
`RzM)ILl  
/** =XS'V*  
* @author treeroot wYawG$@_  
* @since 2006-2-2 p9sxA|O=y  
* @version 1.0 4-n.4j|  
*/ yq,5M1vR  
public class HeapSort implements SortUtil.Sort{ @+!d@`w:z2  
9_/1TjrDN  
/* (non-Javadoc) U&a]gkr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dX3> j{_  
*/ %E!0,y,:  
public void sort(int[] data) { fu&]t8MJC  
MaxHeap h=new MaxHeap(); ?^+|V,<  
h.init(data); =UP)b9*h  
for(int i=0;i h.remove(); |Z/ySAFM  
System.arraycopy(h.queue,1,data,0,data.length); hg>YOf&RG  
} nz&JG~Qfm  
J/*[wj  
private static class MaxHeap{ e O}mZN  
&\K#UVDyhh  
void init(int[] data){ Bms?`7}N  
this.queue=new int[data.length+1]; ,?f(~<Aj  
for(int i=0;i queue[++size]=data; #sHP\|rA  
fixUp(size); 5m3sjcp_  
} t2$:*PvE  
} 3G&1. 8  
Ywr{/  
private int size=0; C|JWom\J  
>) ^!gz8  
private int[] queue; zC^Ib&gm>,  
g/yXPzLU  
public int get() { cK } Qu  
return queue[1]; vNt2s)J$  
} =@f;s<v/  
@'y"D  
public void remove() { 2gv(`NKYE  
SortUtil.swap(queue,1,size--); hv)($;  
fixDown(1); ;Os3 !  
} , $=V  
file://fixdown !14z4]b  
private void fixDown(int k) { 0.5_,an3  
int j; m4 (Fuu  
while ((j = k << 1) <= size) { BM W4E 5  
if (j < size %26amp;%26amp; queue[j] j++; f<'C<xnf  
if (queue[k]>queue[j]) file://不用交换 3QVng^"B)  
break; kgu+ q\?  
SortUtil.swap(queue,j,k); lb('r"*.  
k = j; "869n37  
} M@3H]t?  
} hU{%x#8}lK  
private void fixUp(int k) { EKf4f^<  
while (k > 1) { k4P.}SJ?  
int j = k >> 1; V+q RDQ  
if (queue[j]>queue[k]) 1,J.  
break; 1XKk~G"D  
SortUtil.swap(queue,j,k); Sm,$~~iq}  
k = j; xl^'U/  
} {m?x},  
} $} Myj'`r  
|+bG~~~%j  
} .,,73"  
%Z? o]  
} 2P}RZvUd  
#wyS?FP-  
SortUtil: UTt#ltun?  
Id0F2  [  
package org.rut.util.algorithm; ;a`X|N9  
>vU Hf`4T  
import org.rut.util.algorithm.support.BubbleSort; bW]+Og  
import org.rut.util.algorithm.support.HeapSort; +*q@=P,  
import org.rut.util.algorithm.support.ImprovedMergeSort; /~[R u  
import org.rut.util.algorithm.support.ImprovedQuickSort; >>r:L3<!  
import org.rut.util.algorithm.support.InsertSort;  df'g},_  
import org.rut.util.algorithm.support.MergeSort; L9@jmh*E  
import org.rut.util.algorithm.support.QuickSort; UK,P?_e  
import org.rut.util.algorithm.support.SelectionSort; ){:aGGtko  
import org.rut.util.algorithm.support.ShellSort; v(O.GhJ@  
;=OH=+R l  
/** 5PPpX=\  
* @author treeroot (Wqhuw!u  
* @since 2006-2-2 (YOgQ)},  
* @version 1.0 I .ty-X]  
*/ z"#.o^5  
public class SortUtil { !)=o,sVA  
public final static int INSERT = 1; CmOb+:4@K  
public final static int BUBBLE = 2; Ul Iw&U  
public final static int SELECTION = 3; +q$|6?  
public final static int SHELL = 4; jlBCu(.,_  
public final static int QUICK = 5; }t'^Au`X  
public final static int IMPROVED_QUICK = 6; fL;p^t u3  
public final static int MERGE = 7; ULjzhy+(8  
public final static int IMPROVED_MERGE = 8; !Xi>{nV  
public final static int HEAP = 9; d#Ajb  
]N_^{k,  
public static void sort(int[] data) { )QD}R36Ic  
sort(data, IMPROVED_QUICK); `9l\ ~t(M  
} $ Zr,-  
private static String[] name={ ise}> A!t  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 0 y%R  
}; }[`?#`sW  
t,,^^ll  
private static Sort[] impl=new Sort[]{ b*KZe[#M1  
new InsertSort(), W\7*T1TDj  
new BubbleSort(), v_0!uT5~NE  
new SelectionSort(), #8jd,I% L  
new ShellSort(), 3)a29uc:U  
new QuickSort(), ltR^IiA}  
new ImprovedQuickSort(), <4,?lZ  
new MergeSort(), 1`{ib  
new ImprovedMergeSort(), G6 5N:  
new HeapSort() D$E9%'ir  
}; `t&;Yk]-L  
C 5 UDez  
public static String toString(int algorithm){ $4L3y uH  
return name[algorithm-1]; {6sfa?1j  
} Fr3t [:D  
x["  
public static void sort(int[] data, int algorithm) { 1 7oxD  
impl[algorithm-1].sort(data); ($> 0&w  
} ;7k7/f:  
>>zoG3H!  
public static interface Sort { /g''-yT7#  
public void sort(int[] data); ASw |sw  
} ':]a.yA\1  
N-E`go  
public static void swap(int[] data, int i, int j) { oFR'GUQC  
int temp = data; TP::y  
data = data[j]; ^^l"brPa  
data[j] = temp; 9G+rxyWMW  
} D:tZiS=0  
} ycD.:w p\'  
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