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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。 /dqKFxB1  
插入排序: k|V{jB G"@  
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package org.rut.util.algorithm.support; =h)H`  
Fmu R(f=  
import org.rut.util.algorithm.SortUtil; <O WPG,  
/** R Mm`<:H_  
* @author treeroot T^'i+>F!w  
* @since 2006-2-2 |z~?"F6 Y<  
* @version 1.0 :97`IV%  
*/ T2d pn%I  
public class InsertSort implements SortUtil.Sort{ VtVnht1  
&~& i >  
/* (non-Javadoc)  }oG&zw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :\[F=  
*/ + y^s 6j}  
public void sort(int[] data) { ^o 5q- ;a  
int temp; pkoHi'}}$  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^:],JN k  
} J L3A/^  
} ,P|PPx%@  
} V)`? J)  
nxt1Y04,H  
} cZYX[.oIB  
)mEF_ &  
冒泡排序: uzo}?X#  
$lqV(s  
package org.rut.util.algorithm.support; ,rd+ dN  
'e*C^(6  
import org.rut.util.algorithm.SortUtil; 5~kf:U%~  
0kkiS 3T  
/** )Mok$  
* @author treeroot EW`3h9v~  
* @since 2006-2-2 !|!V}O  
* @version 1.0 $`  
*/ Rz)#VVYC=  
public class BubbleSort implements SortUtil.Sort{ "$)2|  
& mWq'h  
/* (non-Javadoc) YS]RG/'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DlP}Fp{  
*/ ,wV2ZEW}e  
public void sort(int[] data) { y.nw6.`MR  
int temp; !cpBX>{w  
for(int i=0;i for(int j=data.length-1;j>i;j--){ j@DyWm/7  
if(data[j] SortUtil.swap(data,j,j-1); @sDd:> t  
} IE6/ E  
} @dXf_2Tv=  
} Cfj*[i4  
} `{/=i|6  
wFvilF V  
} +k>v^sz  
}vi%pfrB  
选择排序: C@[:}ZGMV  
6k[u0b`  
package org.rut.util.algorithm.support; NOx| #  
aX|`G]PhdI  
import org.rut.util.algorithm.SortUtil; uC3$iY:_e  
6/z}-;,W'  
/** Fh "S[e  
* @author treeroot ReRRFkO"2  
* @since 2006-2-2 H(AYtnvB  
* @version 1.0 BZj[C=#x  
*/ .D)}MyKnu  
public class SelectionSort implements SortUtil.Sort { 1>2397  
`DwlS!0  
/* uPqPoI>N!  
* (non-Javadoc) ._yr7uY[M  
* 0Zq" -  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HwcGbbX)  
*/ eAqQ~)8^  
public void sort(int[] data) { 'e&4#VLH^  
int temp; FLWz7Rj  
for (int i = 0; i < data.length; i++) { n Au>i<  
int lowIndex = i; <Z&gAqj 2  
for (int j = data.length - 1; j > i; j--) { BoXCc"q[  
if (data[j] < data[lowIndex]) { %*uqtw8  
lowIndex = j; nuQ"\ G  
} KDhHp^IXQ  
} M *}$$Fe|  
SortUtil.swap(data,i,lowIndex); =_XcG!"  
} l}wBthwCc  
} e7;]+pN]J  
sJD"u4#y  
} }'{(rU  
|QY+vO7fxj  
Shell排序: OT[t EqQ  
/i"EVN`t  
package org.rut.util.algorithm.support; -L[K1;Xv"  
bw4b'9cK  
import org.rut.util.algorithm.SortUtil; Ik,w3}*P*  
@bPJ}C  
/** wD<G+Y}  
* @author treeroot G'("-9  
* @since 2006-2-2 *rbayH  
* @version 1.0 48DsRy  
*/ k X-AC5]  
public class ShellSort implements SortUtil.Sort{ vr;7p[~  
jzV#%O{`  
/* (non-Javadoc) V>%%2"&C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Bm?Ku7}.  
*/ 9qPP{K,Pq2  
public void sort(int[] data) { X6;aF ;"5  
for(int i=data.length/2;i>2;i/=2){ Y~CS2%j  
for(int j=0;j insertSort(data,j,i); <HD/&4$[  
} u+V;r)J{  
} <(iOzn  
insertSort(data,0,1); #:yZJS9f9  
} nO/5X>A,Zw  
(tz! "K  
/** x4. #_o&  
* @param data OY)x Kca  
* @param j CV6H~t'1  
* @param i 6nwO:?1o9  
*/ 5x: XXj"  
private void insertSort(int[] data, int start, int inc) { lC2xl(#!  
int temp; OU##A:gI  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 3o?Lz7L  
} "6}+|!"$  
} >5j/4Ly  
} t EeMl =u  
+`+a9+=  
} !F8 !]"*  
lL^7x  
快速排序: cnj_tC=zt  
N+tS:$V  
package org.rut.util.algorithm.support; {/Cd^CK  
$DVy$)a!u  
import org.rut.util.algorithm.SortUtil; D9Z5g3s7R  
-lp_~)j^  
/** [ M'1aBx^  
* @author treeroot WZMsmhU@T  
* @since 2006-2-2 iO@wqbg$6  
* @version 1.0 ?BRL;(x  
*/ u>eu47"n!  
public class QuickSort implements SortUtil.Sort{ ?R+$4;iy  
W) _B(;$]  
/* (non-Javadoc) k9,"`dk@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y}6)jzBV  
*/ Xu$*ZJ5w  
public void sort(int[] data) { aZ^lI 6@+4  
quickSort(data,0,data.length-1); gu/Yc`S[  
} aJF`rLm  
private void quickSort(int[] data,int i,int j){ |WX4L7yrhK  
int pivotIndex=(i+j)/2; i!iODt3k  
file://swap v!uLd.(  
SortUtil.swap(data,pivotIndex,j); pg<>Ow5,~l  
,..b)H5n  
int k=partition(data,i-1,j,data[j]); [q@%)F  
SortUtil.swap(data,k,j); 5YCbFk^  
if((k-i)>1) quickSort(data,i,k-1); jyC6:BNust  
if((j-k)>1) quickSort(data,k+1,j); qL#R XUTP  
@|@43}M]C-  
} t|q=NK/  
/** c[I,Sveq  
* @param data e'6?iLpy  
* @param i b-Hn=e_  
* @param j =VU2#O  
* @return Dmw,Bi*  
*/ c ~ SI"  
private int partition(int[] data, int l, int r,int pivot) { <ZiO[dEV  
do{ h(L5MZs  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 9+:Trc\%N  
SortUtil.swap(data,l,r); Wama>dy%  
} H1]\B:  
while(l SortUtil.swap(data,l,r); @^e@.)  
return l; :uEp7Y4  
} m "DMa  
wnX6XyUH  
} *O;N"jf  
Nm~#$orI|  
改进后的快速排序: *}J_STM  
w&{J9'~  
package org.rut.util.algorithm.support; yV. P.Q  
. ~<+  
import org.rut.util.algorithm.SortUtil; |?> h$'  
tu'MYY  
/** >O _  
* @author treeroot X]!@xlwF\  
* @since 2006-2-2 8vo} .JIl  
* @version 1.0 fCfY.vd5  
*/ 3XRG"  
public class ImprovedQuickSort implements SortUtil.Sort { D6t]E)FH  
U`Zn*O~/  
private static int MAX_STACK_SIZE=4096; q~3&f  
private static int THRESHOLD=10; R<=t{vTJ5  
/* (non-Javadoc) Q ZlUUj\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6D0,ME#  
*/ 4!jHZ<2 Z  
public void sort(int[] data) { ($s{em4L  
int[] stack=new int[MAX_STACK_SIZE]; }dz(DP d  
;W].j%]L e  
int top=-1; k-U/x"Pl  
int pivot; =N c`hP  
int pivotIndex,l,r; ;vitg"Zh>  
~iWSc8-  
stack[++top]=0; 93\,m+-  
stack[++top]=data.length-1; >MT)=4 9q  
4pqZ!@45|  
while(top>0){  AMdS+(J  
int j=stack[top--]; BP6Shc|C  
int i=stack[top--]; wOOPWwk  
>UMnItq(l  
pivotIndex=(i+j)/2; }#J}8.  
pivot=data[pivotIndex]; F'I6aE%  
7r>W r#  
SortUtil.swap(data,pivotIndex,j); DFonK{  
NSq=_8  
file://partition U~m.I  
l=i-1; 0YL0Oa+7  
r=j; #7=LI\  
do{ yKJ^hv"#  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); YLGLr @:q  
SortUtil.swap(data,l,r); Q)>'fZ)  
} EMG*8HRI>r  
while(l SortUtil.swap(data,l,r); ;j=1 oW  
SortUtil.swap(data,l,j); ]_?y[@ZP  
>y[S?M  
if((l-i)>THRESHOLD){ W=?87PkJu  
stack[++top]=i; keOW{:^i  
stack[++top]=l-1; ;Y\,2b, xh  
} ,whNh  
if((j-l)>THRESHOLD){ mxGN[ %ve  
stack[++top]=l+1; ,)1e+EnV&  
stack[++top]=j; 1*h7L<#|mQ  
} B*IDx`^Y  
Xdt+ \}\  
} K }BX6dA  
file://new InsertSort().sort(data); _=5ZB_I  
insertSort(data); K dm5O@tq  
} &u-Bu;G.e  
/** @{uc  
* @param data #EUgb7  
*/  Dfia=1A  
private void insertSort(int[] data) { G.8b\E~  
int temp; qS al~  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Ks(U]G"V  
} U5"OhI  
} yxbTcZ  
} 'QF>e  
Vi WgX.  
} !`lqWO_/ :  
;kBies>V  
归并排序: sA}R!  
e% 6{P  
package org.rut.util.algorithm.support; AHJ;>"]  
Q%^bA,$&D  
import org.rut.util.algorithm.SortUtil; /MH@>C _  
->=++  
/** u2-7vudh  
* @author treeroot bl_WN|SQ  
* @since 2006-2-2 L0tKIpk  
* @version 1.0 i&)C,  
*/ o[hP&9>q  
public class MergeSort implements SortUtil.Sort{ #Ca's'j&f  
"b4iOp&:=  
/* (non-Javadoc) ZnLk :6'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \*aLyyy3  
*/ mcr#Ze  
public void sort(int[] data) {  <z2mNq  
int[] temp=new int[data.length]; ;bX ~4O&v+  
mergeSort(data,temp,0,data.length-1); TZNgtR{q  
} / LM  
[nIG_j>D-f  
private void mergeSort(int[] data,int[] temp,int l,int r){ =pyZ^/}P  
int mid=(l+r)/2; c0q)  
if(l==r) return ; &>.1%x@R  
mergeSort(data,temp,l,mid); } <4[(N  
mergeSort(data,temp,mid+1,r); L^1q/4${  
for(int i=l;i<=r;i++){ <Cu?$  
temp=data; ?^ezEpW  
} v9lB k]c  
int i1=l; D*'M^k|1  
int i2=mid+1; N('DIi*or  
for(int cur=l;cur<=r;cur++){ e.|RC  
if(i1==mid+1) yVQz<tX|  
data[cur]=temp[i2++]; Sx9:$"3.X  
else if(i2>r) ^@L l(?  
data[cur]=temp[i1++]; Ja=70ZI^ 6  
else if(temp[i1] data[cur]=temp[i1++]; kah3Uhr~  
else ANQa2swM  
data[cur]=temp[i2++]; Bye@5D  
} tO>OD#  
} 1idjX"'  
?J@qg20z  
} " IkF/  
bSR+yr'?  
改进后的归并排序: ]q[  
8Gl5)=2  
package org.rut.util.algorithm.support; V /9"Xmv75  
&xuwke:[  
import org.rut.util.algorithm.SortUtil; w[7.@%^[  
|;u%JW$4  
/** Q=L$7   
* @author treeroot ElR&scXi__  
* @since 2006-2-2 uj9tr`Zh  
* @version 1.0 n vpPmc  
*/ u4,X.3V]A  
public class ImprovedMergeSort implements SortUtil.Sort { wQ=yY$VP  
pY!dG-;  
private static final int THRESHOLD = 10; gLSG:7m@  
LH/&\k  
/* ?WQd  
* (non-Javadoc) -8Jl4F ,  
* .1}rzh}8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fJ&<iD)6  
*/ k CW!m  
public void sort(int[] data) { 7hF,gl5  
int[] temp=new int[data.length]; Uq]EJu  
mergeSort(data,temp,0,data.length-1);  @6YBK+"  
} a j@C0  
^0x.'G?  
private void mergeSort(int[] data, int[] temp, int l, int r) { L>~@9a\jO  
int i, j, k; UC+7-y,  
int mid = (l + r) / 2; C*EhexK,}  
if (l == r) ua$k^m7m5  
return; A |taP$ %  
if ((mid - l) >= THRESHOLD) >1a \ %G  
mergeSort(data, temp, l, mid); )`s;~_ZZ  
else  [ }p  
insertSort(data, l, mid - l + 1); x?f0Hk+  
if ((r - mid) > THRESHOLD) UR/qVO?  
mergeSort(data, temp, mid + 1, r); >FY&-4+v  
else o,CA;_  
insertSort(data, mid + 1, r - mid); dI_r:xN  
{8{t]LK<  
for (i = l; i <= mid; i++) { }c35FM,  
temp = data; J)$&z*!  
} +24|_Lx0  
for (j = 1; j <= r - mid; j++) { S_|9j{w)  
temp[r - j + 1] = data[j + mid]; d DIQ+/mmg  
} Y/^[qD  
int a = temp[l]; !c4)pMd  
int b = temp[r]; C7b 5%a!  
for (i = l, j = r, k = l; k <= r; k++) { - - i&"  
if (a < b) { b(|%Gbg@c  
data[k] = temp[i++]; cyGN3t9`.  
a = temp; Evr2|4|O~  
} else { UzU-eyA  
data[k] = temp[j--]; <ELziE~>V  
b = temp[j]; `z3|M#r\;  
} ZRXI?Jr%  
} ){O1&|z-  
} wGOMUWAt  
/'Qu u)~  
/** q)K-vt)98  
* @param data IwTr'}XIw  
* @param l qa 6=W  
* @param i o{{:|%m3Q  
*/ 'GV&]   
private void insertSort(int[] data, int start, int len) { !y>lOw})Q  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 4NpHX+=P  
} %rM-"6Q  
} u;+%Qh  
} (MgL"8TS  
} H o4B   
0M#N=%31  
堆排序: @D fkGm[%  
I;Al? &uw  
package org.rut.util.algorithm.support; xNC* ]8d  
gq H`GI  
import org.rut.util.algorithm.SortUtil; P<>[e9|  
a);O3N/*I  
/** `j"4:  
* @author treeroot Qy{NS.T  
* @since 2006-2-2 -;+m%"k5  
* @version 1.0 K H>Sc3p  
*/ -/M9 vS  
public class HeapSort implements SortUtil.Sort{ .HyjL5r-  
vx04h~  
/* (non-Javadoc) "%:7j!#X|I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m5e\rMN~>\  
*/ i'M^ez)u  
public void sort(int[] data) { nHI(V-E2:H  
MaxHeap h=new MaxHeap(); `[X6#` <  
h.init(data); f|X[gL,B  
for(int i=0;i h.remove(); P7}t lHX  
System.arraycopy(h.queue,1,data,0,data.length); lP}od  
} :0nK`$'  
_TZW|Dh-2F  
private static class MaxHeap{ ,"@w>WL<9  
Vn)%C_-]A  
void init(int[] data){ i%xI9BO9  
this.queue=new int[data.length+1]; MP jr_yc]  
for(int i=0;i queue[++size]=data; hA@zoIoe  
fixUp(size); nped  
} lN);~|IOv7  
} PASuf.U$"  
H!Wis3S3G  
private int size=0; nA>*IU[  
j'k8^*M6  
private int[] queue; L5R `w&Up  
f8^"E $"  
public int get() { (})]H:W7  
return queue[1]; {GUb'J  
} &K06}[J  
+*n] tlk  
public void remove() { USE   
SortUtil.swap(queue,1,size--); ah 4kA LO  
fixDown(1); *]FgfttES  
} 'n>K^rA  
file://fixdown $X`bm*  
private void fixDown(int k) { Pg7>ce  
int j; e%pu.q\gK  
while ((j = k << 1) <= size) { %'$f ?y  
if (j < size %26amp;%26amp; queue[j] j++; IZ+ *`E  
if (queue[k]>queue[j]) file://不用交换 MO[c0n%  
break; /^d. &@*  
SortUtil.swap(queue,j,k); AeN 3<|RN  
k = j; W5pn;u- sz  
} Dp^"J85}   
} E yd$fcRK  
private void fixUp(int k) { @o`sf-8x  
while (k > 1) { +IvNyj|  
int j = k >> 1; VxNXd?  
if (queue[j]>queue[k]) uH $oGY  
break; ]GcV0&|  
SortUtil.swap(queue,j,k); YFG-U-t3  
k = j; T]^?l  
} KCE=|*6::|  
} 5n:nZ_D  
!zU/Hq{wcK  
} xf'LR[M  
miwf&b  
} 9p5= _  
yGRR8F5>(  
SortUtil: M/*Bh,M`  
*K`x;r  
package org.rut.util.algorithm; iM8sX B  
Hyf"iYv+  
import org.rut.util.algorithm.support.BubbleSort; 3b e6p  
import org.rut.util.algorithm.support.HeapSort; RZ*<n$#6  
import org.rut.util.algorithm.support.ImprovedMergeSort; #?_#!T|  
import org.rut.util.algorithm.support.ImprovedQuickSort; nQ|GqU\oA  
import org.rut.util.algorithm.support.InsertSort; V)=Z6ti  
import org.rut.util.algorithm.support.MergeSort; )W#T2Z>N1  
import org.rut.util.algorithm.support.QuickSort; 18jJzYawh  
import org.rut.util.algorithm.support.SelectionSort; S,XKW(5   
import org.rut.util.algorithm.support.ShellSort; z23#G>I&  
jg?bf/$s  
/**  %W(^6p!  
* @author treeroot nkTYWw  
* @since 2006-2-2 )u<eO FI+  
* @version 1.0 / HL_$g<  
*/ nMkOUW:T!  
public class SortUtil { { yTpRQN~  
public final static int INSERT = 1; ]{<saAmJC  
public final static int BUBBLE = 2; TopHE  
public final static int SELECTION = 3; ^1R"7h  
public final static int SHELL = 4; Vu=] O/ =P  
public final static int QUICK = 5; aFyh,  
public final static int IMPROVED_QUICK = 6; ,}KwP*:Z  
public final static int MERGE = 7; |hc\jb  
public final static int IMPROVED_MERGE = 8; l(#1mY5!q8  
public final static int HEAP = 9; grc:Y  
>}CEN  
public static void sort(int[] data) { @`6}`k  
sort(data, IMPROVED_QUICK); GKCM|Y  
} "3wv:BL  
private static String[] name={ hzq5![/sV  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" >:A<"wZ  
}; oooS s&t  
v G2.]?  
private static Sort[] impl=new Sort[]{ Nfg{,/ O  
new InsertSort(), .8K6C]gw  
new BubbleSort(), =x1Wii$`  
new SelectionSort(), #,TELzUVE  
new ShellSort(), -;vT<G3  
new QuickSort(), ) y`i@S}J  
new ImprovedQuickSort(), Yc|uD-y  
new MergeSort(), 7_KXD#  
new ImprovedMergeSort(), *U_S1>0n  
new HeapSort() (#If1[L  
}; UoHd-  
oXdel Ju?  
public static String toString(int algorithm){ =MxpH+spI  
return name[algorithm-1]; j|mv+O  
} !3@{U@*Z]  
v$;@0t:;#  
public static void sort(int[] data, int algorithm) { Je 31".  
impl[algorithm-1].sort(data); Od-Ax+Hp  
} W tVf wC_  
/9Z!p  
public static interface Sort { M1EOnq4-  
public void sort(int[] data); #~S>K3(  
} Q,~x#  
>nK%^T  
public static void swap(int[] data, int i, int j) { F_v-}bbcFQ  
int temp = data; T{tn.sT  
data = data[j]; 7*/J4MN  
data[j] = temp; |g!`\@O  
} s%O Y<B@V2  
} kutJd{68  
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