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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。 !M1"b;  
插入排序: $G@5qxcV  
Wt-GjxGi  
package org.rut.util.algorithm.support; bJTBjS-7  
iz PDd{[  
import org.rut.util.algorithm.SortUtil; z$. 88 ^  
/** Y\8)OBZ  
* @author treeroot O m2d .7S  
* @since 2006-2-2 ?NsW|w_  
* @version 1.0 WP'!*[z  
*/ kxhWq:[c  
public class InsertSort implements SortUtil.Sort{ ;dgp+  
7[XRd9a5(  
/* (non-Javadoc) +\ .Lp 5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >KhOz[Zg  
*/ :':s@gqr  
public void sort(int[] data) { 9qzHS~l  
int temp; WW~sNC\3`(  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); r[iflBP  
} ;[OH(!  
} &}B|"s[  
} [sj osV  
c`w}|d]mC  
} ~=l;=7 T  
m&&m,6``P  
冒泡排序: ENs&RZ;  
t-bB>q#3>  
package org.rut.util.algorithm.support; A$0fKko  
VuZuS6~#J  
import org.rut.util.algorithm.SortUtil; g1"kTh  
Dp-z[]})1  
/** ]Q)OL  
* @author treeroot F{;((VboN  
* @since 2006-2-2 +VOK%8,p  
* @version 1.0 BUXpC xQ  
*/ c 3)jccWTc  
public class BubbleSort implements SortUtil.Sort{ M%P:n/j  
)1`0PJoHE  
/* (non-Javadoc) j'"J%e]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .p" xVfi6  
*/ $DaNbLV  
public void sort(int[] data) { r52gn(,  
int temp; 6mxfLlZ  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 00~mOK;1  
if(data[j] SortUtil.swap(data,j,j-1); 9EibIOD^/  
} I:1C8*/  
} U8n V[  
} M-Y_ Wb3  
} R8Fv{7]c  
#?- wm  
} ope^~+c~\  
x7<K<k;s  
选择排序: 0)Wltw~`&  
H8}oIA"b  
package org.rut.util.algorithm.support; X2~!(WxU F  
mtcw#D  
import org.rut.util.algorithm.SortUtil; T!)(Dv8@F  
{q^[a-h>  
/** -k"/X8  
* @author treeroot P8/0H(,  
* @since 2006-2-2 '3^'B0 3  
* @version 1.0 *_\_'@1|J)  
*/ oV78Hq6  
public class SelectionSort implements SortUtil.Sort { >e5 qv(y]  
a~y'RyA  
/* "b3"TPfK  
* (non-Javadoc) ":QZy8f9%  
* ee76L&:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \d`h/tHk  
*/ |[b{)s?x  
public void sort(int[] data) { ,UF_`|  
int temp; kVLS  
for (int i = 0; i < data.length; i++) { 0*{%=M  
int lowIndex = i; )|# sfHv7  
for (int j = data.length - 1; j > i; j--) { b,1ePS  
if (data[j] < data[lowIndex]) { s&3Vg7B  
lowIndex = j; )oPBa  
} bq0zxg%  
} UH"%N)[  
SortUtil.swap(data,i,lowIndex); Em~>9f ?Q(  
} z9Rp`z&`E  
} 3eQ&F~S  
`*1p0~cu  
} p>8D;#Hm L  
d<P\&!R(  
Shell排序: NyNXP_8  
' %o#q6O  
package org.rut.util.algorithm.support; mxdr,Idx  
O)r4?<Q  
import org.rut.util.algorithm.SortUtil; WOL:IZX%  
L$M9w  
/** cTTL1SW  
* @author treeroot FXkM#}RgNm  
* @since 2006-2-2 > /caXvS  
* @version 1.0 )bscBj@  
*/ /jJw0 5;L  
public class ShellSort implements SortUtil.Sort{ FJ)$f?=Qd  
n,WqyNt*  
/* (non-Javadoc) s`~IUNJ@P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h>m"GpF x  
*/ k~1?VQ+?M  
public void sort(int[] data) { #!+:!_45  
for(int i=data.length/2;i>2;i/=2){ 3L}A3de'  
for(int j=0;j insertSort(data,j,i); {&1/V  
} PB\x3pV!}  
} Z4 =GMXj  
insertSort(data,0,1); JY(WK@  
} 1#+S+g@#  
p H2Sbs:Tk  
/** ;>7De8v@@  
* @param data 0YDR1dO(*  
* @param j NqWdRU  
* @param i nZYBE030  
*/ /f;~X"!  
private void insertSort(int[] data, int start, int inc) { ak!G8'w  
int temp; KJ4.4Zq{c  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); &gx%b*;`L0  
} Qq|57X)P*  
} ['iPl/v0  
} Q hO!Ma]  
YT(AUS5n  
} BLD gt~h#  
|Z +=  
快速排序: =Jb>x#Y  
%n9aaoD  
package org.rut.util.algorithm.support; JIq=* '  
>pe.oxY  
import org.rut.util.algorithm.SortUtil; 6(ol1 (U  
$1`2 kM5  
/** C]A.i2o8  
* @author treeroot yD}B%\45  
* @since 2006-2-2 l!u_"I8j5  
* @version 1.0 g]0_5?i  
*/ sd|).;s}  
public class QuickSort implements SortUtil.Sort{ p0vVkdd  
oXF.1f/h  
/* (non-Javadoc) #QMz<P/Gl6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )\$|X}uny&  
*/ s?nR 4  
public void sort(int[] data) { P/_['7  
quickSort(data,0,data.length-1); j&qub_j"xX  
} brUF6rQ  
private void quickSort(int[] data,int i,int j){ ?&1!vz  
int pivotIndex=(i+j)/2; [d ]9Oa4  
file://swap 3h`f  6  
SortUtil.swap(data,pivotIndex,j); ]~siaiN[  
<wD-qTW  
int k=partition(data,i-1,j,data[j]); [/8%3  
SortUtil.swap(data,k,j); S30%)<W  
if((k-i)>1) quickSort(data,i,k-1); 0<@@?G  
if((j-k)>1) quickSort(data,k+1,j); (n_/`dP  
'TB2:W3  
} _X x/(.O  
/** z~s PXGb  
* @param data 13x p_j  
* @param i `VguQl_,gA  
* @param j Otn1wBI  
* @return 1bwOm hkS  
*/ ^^ixa1H<  
private int partition(int[] data, int l, int r,int pivot) { ' S/gmn  
do{ $ $mV d+  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); QoT;WM Z  
SortUtil.swap(data,l,r); uoh7Sz5!^  
} ]:J$w]\  
while(l SortUtil.swap(data,l,r); 4^o^F-k'  
return l; AFwdJte9e  
} uQKT  
YPI-<vM~  
} O0H.C0}  
O?#7N[7  
改进后的快速排序: b@hqz!)l`  
^} >w<'0  
package org.rut.util.algorithm.support; Ml-6OvQ7g  
V(!V_Ug9.  
import org.rut.util.algorithm.SortUtil; uW %#  
A|{(/G2*  
/** KF:78C  
* @author treeroot \:LW(&[!  
* @since 2006-2-2 ,r_Gf5c  
* @version 1.0 bW(0Ng  
*/ 4;2uW#dG"  
public class ImprovedQuickSort implements SortUtil.Sort { FGBbO\< /  
Yrq~5)%  
private static int MAX_STACK_SIZE=4096; >Cq<@$I2EB  
private static int THRESHOLD=10; mj7#&r,1l  
/* (non-Javadoc) 5*u+q2\F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5wU]!bxr  
*/ SQ+Gvq%Q]  
public void sort(int[] data) { ) ;Y;Q  
int[] stack=new int[MAX_STACK_SIZE]; iuul7VR-%  
Dk51z@  
int top=-1; 'i|YlMFIg  
int pivot; >Y@H4LF;1x  
int pivotIndex,l,r; nKj7.,>;:<  
Q^^niVz  
stack[++top]=0; tw)mepwB  
stack[++top]=data.length-1; ^E>3|du]O  
Q\sK"~@3  
while(top>0){ ]JQULE)  
int j=stack[top--]; +G>\-tjSD  
int i=stack[top--];  uHRsFlw  
!&@615Vtw  
pivotIndex=(i+j)/2; 4 s9LB  
pivot=data[pivotIndex]; >9Vn.S  
}4X0epPp;:  
SortUtil.swap(data,pivotIndex,j); ,zY{  
xxQ;xI0+]  
file://partition -jm Y)(\  
l=i-1; zX i 'kB  
r=j; p0eX{xm  
do{ J C}D` h  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); sU^1wB Rj  
SortUtil.swap(data,l,r); Pr C{'XDlU  
} a(ZcmYzXU  
while(l SortUtil.swap(data,l,r); y$M%2mh`  
SortUtil.swap(data,l,j); =:U`k0rn!  
+:/%3}`  
if((l-i)>THRESHOLD){ < I``&>  
stack[++top]=i; as =fCuJ  
stack[++top]=l-1; DzRFMYBR  
} {?7Uj  
if((j-l)>THRESHOLD){ +Vdpy (  
stack[++top]=l+1; NDokSw-  
stack[++top]=j; cPQiUU~W@  
} YtLt*Ig%  
86a\+Kz%%L  
} K3l95he  
file://new InsertSort().sort(data); 1X1dG#:  
insertSort(data); eS){1  
} lH~[f  
/** *lJxH8\  
* @param data J] r^W)O  
*/ m.0*NW  
private void insertSort(int[] data) { u:  
int temp; |k00Z+O(  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); z\4.Gm-  
} `uTmw^pZX  
} >+T)#.wo&  
} f* wx<  
fI|$K )K  
} +LJ73 !  
4?01s-Y  
归并排序: L-&\\{ X  
_,*r_D61S  
package org.rut.util.algorithm.support; KqP#6^ _  
)=(kBWM  
import org.rut.util.algorithm.SortUtil; RT8 ?7xFc  
G^@5H/)  
/** 9W);rL|5  
* @author treeroot 7a}k  
* @since 2006-2-2 AQ^u   
* @version 1.0 + >!;i6|  
*/ #4;wjcGWw  
public class MergeSort implements SortUtil.Sort{ qZZK#,Qb  
)QJUUn#  
/* (non-Javadoc) (**oRwr%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |k9 C/  
*/ m(P]k'ZH?  
public void sort(int[] data) { ?gXp*>Kg[  
int[] temp=new int[data.length]; 1{.9uw"2S  
mergeSort(data,temp,0,data.length-1); X5w$4Kj&4l  
} QTnP'5y  
ksm~<;td  
private void mergeSort(int[] data,int[] temp,int l,int r){ ,`sv1xwd  
int mid=(l+r)/2; I( Mm?9F  
if(l==r) return ; K@%].:  
mergeSort(data,temp,l,mid); zKK9r~ M  
mergeSort(data,temp,mid+1,r); HK% 7g  
for(int i=l;i<=r;i++){ l%=;  
temp=data; MpOc  
} V]?R>qhgu  
int i1=l; l}P=/#</T  
int i2=mid+1; |1Z)E+q*:  
for(int cur=l;cur<=r;cur++){ 3__-nV  
if(i1==mid+1) /zox$p$?h  
data[cur]=temp[i2++]; EiaW1Cs  
else if(i2>r) {2gwk8  
data[cur]=temp[i1++]; ,/U6[P_C5  
else if(temp[i1] data[cur]=temp[i1++]; :~SyL!  
else J9 I:Q<;  
data[cur]=temp[i2++]; _(zG?]y0P  
}  WfRXP^a  
} 3iU=c&P  
Qv ?"b  
} #s9aI_  
^kSqsT"  
改进后的归并排序: 0IWf!Sk ]  
Gp\ kU:}&  
package org.rut.util.algorithm.support; 4{Z)8;QX  
h>bx}$q  
import org.rut.util.algorithm.SortUtil; (QiAisE  
fTX;.M/%   
/** kSo"Ak!  
* @author treeroot DIUjn;>k8  
* @since 2006-2-2 o,wUc"CE  
* @version 1.0 HOJV,9v N  
*/ :MDKC /mC  
public class ImprovedMergeSort implements SortUtil.Sort { @KUWxFak  
=WJ NWt>  
private static final int THRESHOLD = 10; `QY)!$mUIF  
nT)vNWT=  
/* 8JUwf  
* (non-Javadoc) iam1V)V  
* LXCx~;{\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {7pli{`  
*/ D3K8F@d  
public void sort(int[] data) { 3 8`<:{^Y  
int[] temp=new int[data.length]; xd0 L{ue.  
mergeSort(data,temp,0,data.length-1); ]]Ufas9  
} %N_%JK\{@  
)WFr</z5bA  
private void mergeSort(int[] data, int[] temp, int l, int r) { *gz{.)W  
int i, j, k; BD7N i^qI$  
int mid = (l + r) / 2; S`]k>' l  
if (l == r) "J3x_~,[4m  
return; ,v}k{( 16{  
if ((mid - l) >= THRESHOLD) [1H^3g '  
mergeSort(data, temp, l, mid); -|9=P\U8S  
else \lNN Msd&  
insertSort(data, l, mid - l + 1); e@YK@?^#N  
if ((r - mid) > THRESHOLD) rQ snhv  
mergeSort(data, temp, mid + 1, r); '}#9)}x!  
else Ef{Vp;]  
insertSort(data, mid + 1, r - mid); UR5`ue ;  
;xn0;V'=  
for (i = l; i <= mid; i++) { J4U1t2@)9  
temp = data; [opGZ`>)j"  
} ;]:@n;c\  
for (j = 1; j <= r - mid; j++) { caX< n>  
temp[r - j + 1] = data[j + mid]; h!9ei6  
} ygl0k \  
int a = temp[l]; dUdT7ixo  
int b = temp[r]; T&7qC=E#5  
for (i = l, j = r, k = l; k <= r; k++) { zp?`N;  
if (a < b) { 11;zNjD|  
data[k] = temp[i++]; J<lO= +mg  
a = temp; oe~b}:  
} else { -`6+UkOV[x  
data[k] = temp[j--]; P0jtp7)7  
b = temp[j]; Fv`,3aNB  
} 6;5Ss?ep  
} iDrZc  
} Q=yg8CQ  
;YL i{  
/** Z;)%%V%o  
* @param data h2J x]FJ  
* @param l BING{ew  
* @param i El"Q'(:/U  
*/ zT-_5uZQ  
private void insertSort(int[] data, int start, int len) { lU8Hd|@-  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); K!l5coM  
} K\c#ig   
} BTrn0  
} ;i+#fQO7Q  
} P=G3:eX  
uWE^hz"  
堆排序: lks!w/yCF  
8, >P  
package org.rut.util.algorithm.support; d m%8K6|  
"kqPmeI  
import org.rut.util.algorithm.SortUtil; hP&B t  
U~7c+}:c  
/** ufT`"i  
* @author treeroot m&yJzMW|  
* @since 2006-2-2 '1/i"yoW  
* @version 1.0 |$_sX9\`?|  
*/ @U}1EC{A  
public class HeapSort implements SortUtil.Sort{ H} g{Cr"Ex  
|LKXOU c  
/* (non-Javadoc) DM>eVS3}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VVOd]2{  
*/ 3sZ\0P}   
public void sort(int[] data) { ,s;Uf F  
MaxHeap h=new MaxHeap(); 5l*&>C[(i  
h.init(data); G,w(d@  
for(int i=0;i h.remove(); Thit  
System.arraycopy(h.queue,1,data,0,data.length); VY\&8n}e(  
} SasJic2M  
R{T$[$6S  
private static class MaxHeap{ Xla~Yg  
65^9  
void init(int[] data){ _:27]K:  
this.queue=new int[data.length+1]; x-3\Ls[I  
for(int i=0;i queue[++size]=data; <2qr}K{'A  
fixUp(size); Hj,A5#|=J  
} P7~>mm+  
} :9 ^* ^T  
kMd.h[X~  
private int size=0; k$^`{6l  
`PH{syz  
private int[] queue; VP]%Hni]  
B^9j@3Ux  
public int get() { czd~8WgOa  
return queue[1]; Th%Sjgsn  
} PwLZkr@4^  
-3Vx76Y  
public void remove() { 4{`{WI{  
SortUtil.swap(queue,1,size--); U/NoP4~{  
fixDown(1); c!9nnTap  
} V "h +L7T  
file://fixdown @;RXLq/8  
private void fixDown(int k) { V~5jfcd  
int j; CeC6hGR5  
while ((j = k << 1) <= size) { ~/P[J  
if (j < size %26amp;%26amp; queue[j] j++; vRO _Q?  
if (queue[k]>queue[j]) file://不用交换 wAW5 Z0D  
break; ?5 7Sk+  
SortUtil.swap(queue,j,k); I2 P@L?h  
k = j; D}X\Ca"h  
} S^\Vgi(  
} sLAQE64\"  
private void fixUp(int k) { oILZgNe'  
while (k > 1) { ]?[fsdAQW  
int j = k >> 1; e^D]EA ]%  
if (queue[j]>queue[k]) LSr]S79N1  
break; ~R92cH>L  
SortUtil.swap(queue,j,k); 0:Ol7  
k = j; 3'u-'  
} [u*5z.^  
} 6,{$J  
ZzT9j~  
} Y/zj[>  
QMbOuw  
} (JFWna0@  
t{vJM!kdlQ  
SortUtil: yaH Zt`Y  
YcpoL@ab  
package org.rut.util.algorithm; rh}J3S5vp  
gSQJJxZ{?  
import org.rut.util.algorithm.support.BubbleSort; @6T/Tdz  
import org.rut.util.algorithm.support.HeapSort; g7W"  
import org.rut.util.algorithm.support.ImprovedMergeSort; |8tilOqI  
import org.rut.util.algorithm.support.ImprovedQuickSort; I&W=Q[m  
import org.rut.util.algorithm.support.InsertSort; hx]?&zT@  
import org.rut.util.algorithm.support.MergeSort; N[ Og43Y  
import org.rut.util.algorithm.support.QuickSort; A2jUmK.&  
import org.rut.util.algorithm.support.SelectionSort; q5)O%l!  
import org.rut.util.algorithm.support.ShellSort; fmDCPkj  
PxDh7{  
/** ]3.;PWa:  
* @author treeroot x+@rg];m  
* @since 2006-2-2 N5b!.B x-w  
* @version 1.0 Ej8^Zg  
*/ iqQD{SRt{  
public class SortUtil { v #j$;  
public final static int INSERT = 1; &FN.:_E  
public final static int BUBBLE = 2; ckE-",G  
public final static int SELECTION = 3; 2a Q[zK  
public final static int SHELL = 4; 8c^TT&  
public final static int QUICK = 5; rCdu0 gYT  
public final static int IMPROVED_QUICK = 6; b2&0Hx  
public final static int MERGE = 7; vnZC,J `  
public final static int IMPROVED_MERGE = 8; U|Ta4W`k\  
public final static int HEAP = 9; [:SWi1cK2  
<lE <f+  
public static void sort(int[] data) { ]|P iF+  
sort(data, IMPROVED_QUICK); _^%,x  
} n]o<S+z  
private static String[] name={ vT,AMja  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 3m!X/u  
}; VQ9/Gxdeo  
n[Y~]  
private static Sort[] impl=new Sort[]{ 5uj?#)N  
new InsertSort(), IKilr'  
new BubbleSort(), ^yN&ZI3P&  
new SelectionSort(), fHd#u%63K  
new ShellSort(), 8>i n_h9  
new QuickSort(), JO6)-U$7UG  
new ImprovedQuickSort(), -fW*vE:  
new MergeSort(), &(l9?EVq1  
new ImprovedMergeSort(), #fn)k1  
new HeapSort() 6fEqqUeV  
}; pYmk1!]/  
%S^8c  
public static String toString(int algorithm){ .;`AAH'k  
return name[algorithm-1]; K} X&AJ5A  
} _TQj~W<  
}l} Bo.C  
public static void sort(int[] data, int algorithm) { t)$:0  
impl[algorithm-1].sort(data); "n5N[1b k  
} Ig0VW)@  
_H7x9 y=  
public static interface Sort { #( 146  
public void sort(int[] data); |~mOfuQb  
} ra gXn  
O`t&ldU  
public static void swap(int[] data, int i, int j) { l L@XM2"  
int temp = data; y(yHt= r  
data = data[j]; `Cynj+PCe  
data[j] = temp; $1L> )S  
} 9w"4K.  
} 1JG'%8}#8  
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