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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。 @W @,8e]c  
插入排序: V6((5o#  
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package org.rut.util.algorithm.support; IuAu_`,Ndi  
O:T 49:R}r  
import org.rut.util.algorithm.SortUtil; {YrA [9  
/** oAB:H \  
* @author treeroot p W5D!z  
* @since 2006-2-2 /kRCCs8t}  
* @version 1.0 EL z5P}L6  
*/ N `fFYO  
public class InsertSort implements SortUtil.Sort{ 0o6o<ggi  
 ggM~Chr  
/* (non-Javadoc) S*J\YcqSC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;/?w-)n?  
*/ zzo93d  
public void sort(int[] data) { ev+H{5W8  
int temp; g=qaq  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); iT O Y  
} ~EXCYUp4v  
} a&)!zhVP  
} 3$5E1*ed  
dvZlkMm   
} CAom4 Sp'  
VGxab;#,:3  
冒泡排序: ,1~zMzw^  
B <qsa QG  
package org.rut.util.algorithm.support; 7w8UnPuM  
(RG "2I3  
import org.rut.util.algorithm.SortUtil; 8+".r2*_iO  
,`YBTU  
/** 94t`&jZ&|u  
* @author treeroot gV h&c 4  
* @since 2006-2-2 }oSgx  
* @version 1.0 h#Z,ud_  
*/ a;-%C{S9r  
public class BubbleSort implements SortUtil.Sort{ >b5 ;I1o=y  
"_dg$j`Y&&  
/* (non-Javadoc) o:3(J}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Jmg9|g!f  
*/ JEWc{)4QD  
public void sort(int[] data) { xaoR\H  
int temp; S+- $Ih`[  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Zby3.=.e  
if(data[j] SortUtil.swap(data,j,j-1); G{>PYLxOb  
} d8+@K&z|  
} 'r\RN\PT  
} V mQ'  
} =2QP7W3mg<  
nHq4f&(H  
} XK@&$~iA3  
]o0]i<:  
选择排序: w{2CV\^>5  
Wq5}LO)  
package org.rut.util.algorithm.support; )X|)X,~+-  
#-+Q]}fB4  
import org.rut.util.algorithm.SortUtil; EStui>ho  
o,c}L9nvt  
/** GRkN0|ovfj  
* @author treeroot chKEGosbF  
* @since 2006-2-2 aBG^Xhx  
* @version 1.0 *V\.6,^v  
*/ /je $+  
public class SelectionSort implements SortUtil.Sort {  |:x,|>/  
#ley3rJW]  
/* Cc%{e9e*  
* (non-Javadoc) G `!A#As  
* 8HJ,6Lr;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8Yf*vp>T/x  
*/ \-[bU6\A\  
public void sort(int[] data) { G7v<Q,s  
int temp; !5?_)  
for (int i = 0; i < data.length; i++) { GQhy4ji'z  
int lowIndex = i; ry=8Oq&[~  
for (int j = data.length - 1; j > i; j--) { +L.D3  
if (data[j] < data[lowIndex]) { kV T |(Y  
lowIndex = j; Q3&D A1b`  
} ZN;ondp4  
} "!AtS  
SortUtil.swap(data,i,lowIndex); !o?&{"#+  
} ^-- R#$X  
} uYg Q?*Z  
kp<Au)u  
} :):vB  
lMu-,Z="  
Shell排序: kBrA ?   
p3mZw lO  
package org.rut.util.algorithm.support; `L7^f!  
>bQOpGy}l  
import org.rut.util.algorithm.SortUtil; 0|j44e }  
MD<x{7O12>  
/** U!c+i#:t  
* @author treeroot _/}$X"4  
* @since 2006-2-2 Et(H6O 8  
* @version 1.0 B; NK\5>  
*/ w+*rbJ  
public class ShellSort implements SortUtil.Sort{ KGo^>us  
$b{8 $<;9  
/* (non-Javadoc) ;}U]^LT=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pKj:)6t"  
*/ *WJK&  
public void sort(int[] data) { O|=?!|`o  
for(int i=data.length/2;i>2;i/=2){ 4~$U#$u_  
for(int j=0;j insertSort(data,j,i); sH2xkUp  
} C6a-  
} =EA @  
insertSort(data,0,1); &K9RV4M5  
} -X7x~x-  
,P`GIGvkA  
/** w_@{v wM$A  
* @param data h>[ qXz  
* @param j JLoE)\Mi  
* @param i SC2LY  
*/ i>CR{q  
private void insertSort(int[] data, int start, int inc) { Nv;'Ys P  
int temp; w%)RX<h dI  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); hslT49m>  
} 6 ]<yR> '  
} |4j6}g\  
} (,+#H]L  
\vc&V8  
} I/A%3i=H  
OiZ-y7;k^  
快速排序: 9 4lt?|3=  
r^rk@W;[  
package org.rut.util.algorithm.support; 'w72i/  
/=9dX; #  
import org.rut.util.algorithm.SortUtil; :KG=3un]  
_1$Y\Y  
/** iY2q^z/S  
* @author treeroot N!dBF t"  
* @since 2006-2-2 xnWezO_  
* @version 1.0 [`tNa Vg  
*/ ;WYz U`<g  
public class QuickSort implements SortUtil.Sort{ MzKl=G  
Rb:?%\=  
/* (non-Javadoc) y,n.(?!*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y|hd!C-x  
*/ hmuhq:<f  
public void sort(int[] data) { T<Zi67QC@  
quickSort(data,0,data.length-1); Zn)o@'{}{  
} \21Gg%W5AE  
private void quickSort(int[] data,int i,int j){ MuzQ z.C  
int pivotIndex=(i+j)/2; R!X+-  
file://swap FdEUZ[IT`{  
SortUtil.swap(data,pivotIndex,j); |<oqT+?i  
3bo [34  
int k=partition(data,i-1,j,data[j]); A8S9HXL  
SortUtil.swap(data,k,j); wCv9VvF`  
if((k-i)>1) quickSort(data,i,k-1); FBouXu#  
if((j-k)>1) quickSort(data,k+1,j); |lzcyz  
/6y{ ?0S  
} &><b/,]  
/** {]m/15/$C  
* @param data $X\2h+ Os  
* @param i Lrr(7cH,  
* @param j <W7WlT  
* @return aAn p7\7  
*/ }jWg&<5+z  
private int partition(int[] data, int l, int r,int pivot) { i$6a0'@U  
do{ 5^ ubXA  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); >X"\+7bw  
SortUtil.swap(data,l,r); _;S~nn  
}  fWs*u[S  
while(l SortUtil.swap(data,l,r); H`q[!5~8  
return l; >/%XP_q%`e  
} 8$ X3J[_j  
>+!Ef  
} A =&`TfXu  
C,LosAd  
改进后的快速排序: cb{"1z  
}&6:0l$4!  
package org.rut.util.algorithm.support; #@1(  
U+E9l?4R  
import org.rut.util.algorithm.SortUtil; @*UV|$~(Q  
Z^_zcH'  
/** |}<Gz+E>  
* @author treeroot #Oq.}x?i  
* @since 2006-2-2 ?FR-a Xx  
* @version 1.0 0O]v|  
*/ IAe/)  
public class ImprovedQuickSort implements SortUtil.Sort { I6@"y0I  
ub`zS-vb  
private static int MAX_STACK_SIZE=4096; cJTwgm?  
private static int THRESHOLD=10; pe3;pRh'  
/* (non-Javadoc) B/!/2x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WA:r4V  
*/ x5/&,&m`%  
public void sort(int[] data) { Ve)BF1YG  
int[] stack=new int[MAX_STACK_SIZE]; QH,(iX6RY  
Z`ww[Tbv~  
int top=-1; >&7^yXS  
int pivot; L2~'Z'q  
int pivotIndex,l,r; r}D#(G$  
:rjfAe=s  
stack[++top]=0; ?k;htJcGv  
stack[++top]=data.length-1; Y#=MN~##t  
Y}<%~z#.4  
while(top>0){ #5'& |<  
int j=stack[top--]; _u~0t`f~  
int i=stack[top--]; Z{yH:{Vk  
|')PQ  
pivotIndex=(i+j)/2; !7MRHI/0C  
pivot=data[pivotIndex]; rK:cUW0]X  
}@tgc?C D  
SortUtil.swap(data,pivotIndex,j); KNj~7aTp  
kY{$[+-jR  
file://partition n5^57[(  
l=i-1; BfVh\ lkH  
r=j; ',LC!^:~Nw  
do{ ;YW@ 3F-h  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 7v0AG:  
SortUtil.swap(data,l,r); U/|JAg #  
} )58 ~2vR  
while(l SortUtil.swap(data,l,r); *kYGXT,f]  
SortUtil.swap(data,l,j); woBx609Aak  
&/"a E  
if((l-i)>THRESHOLD){ K :~tZ  
stack[++top]=i; b(Tvc  
stack[++top]=l-1; %b4tyX:N0  
} W g6H~x  
if((j-l)>THRESHOLD){ gTU5r4xm~  
stack[++top]=l+1; fmc\Li  
stack[++top]=j; Z*UVbyC  
} c%gL3kOT  
?h%Jb^#9  
} NVsaV;u  
file://new InsertSort().sort(data); 6ST(=X_C  
insertSort(data); `8RKpZv&  
} ^+CHp(X  
/** ctLNzJes%  
* @param data ZILJXX4  
*/ l!&ik9m  
private void insertSort(int[] data) { JTm'fo[  
int temp; _N^w5EBC]  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0gaHYqkA>}  
} .SER,],P  
} Xo/H+[;X  
} 4"(rZWv  
7*K UM6z  
} \U>&W  
JcmJq fR  
归并排序: "#E<Leh'  
4R\jZ@D  
package org.rut.util.algorithm.support; 6uFw+Ya#  
tkr&Fs"t+  
import org.rut.util.algorithm.SortUtil; dgoAaS2M  
KU9FHN  
/** -9,~b9$  
* @author treeroot -mG`* 0  
* @since 2006-2-2 9,`i[Dzp  
* @version 1.0 C)EP;5k'!\  
*/ 7_76X)gIV  
public class MergeSort implements SortUtil.Sort{ ~i>DF`w$  
d-+jb<C&  
/* (non-Javadoc) Ue >]uZ|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `Y4Kw  
*/ kodd7 AD  
public void sort(int[] data) { 6{1=3.CL  
int[] temp=new int[data.length]; rMbq_5}  
mergeSort(data,temp,0,data.length-1); _r{H)}9  
} pQ:^ ziwa3  
J*$%d1  
private void mergeSort(int[] data,int[] temp,int l,int r){ \j62"  
int mid=(l+r)/2; )c' 45 bD  
if(l==r) return ; wPjq B{!Q  
mergeSort(data,temp,l,mid); zH}3J}  
mergeSort(data,temp,mid+1,r); 208^Yu  
for(int i=l;i<=r;i++){ 49&i];:%7%  
temp=data; W?.469yy  
} ya8p 4N{_  
int i1=l; +yWD>PY(  
int i2=mid+1; _90D4kGU  
for(int cur=l;cur<=r;cur++){ N knS:r&2  
if(i1==mid+1) y&,|+h  
data[cur]=temp[i2++]; CE`]X;#y  
else if(i2>r) ^rVHaI  
data[cur]=temp[i1++]; [:cD  
else if(temp[i1] data[cur]=temp[i1++]; 6-_g1vq  
else Ul_Zn  
data[cur]=temp[i2++]; )4=86>XJT  
} ITw *m3  
} vu*e*b$}  
u_^mN9h  
} I0 ~'z f  
$45|^.b  
改进后的归并排序: ]|CcQ1#|H  
?uSoJM`wa!  
package org.rut.util.algorithm.support; r{R<J?Y  
-a)1L'R  
import org.rut.util.algorithm.SortUtil; IAH"vHM  
6~%><C  
/** H_RfIX)X  
* @author treeroot zX_F+"]THt  
* @since 2006-2-2 q8d](MaX  
* @version 1.0 mBErU6?X,A  
*/ 2~$S @c  
public class ImprovedMergeSort implements SortUtil.Sort { $WIVCp  
r&4Xf# QD6  
private static final int THRESHOLD = 10; @\y{q;  
i|1*bZ6'  
/* @FN|=?8%  
* (non-Javadoc) ]!{S2x&"  
* #]jl{K\f#X  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LsWD^JE.  
*/ l{dsm1#W~  
public void sort(int[] data) { %@vF%   
int[] temp=new int[data.length]; e n~m)r3&  
mergeSort(data,temp,0,data.length-1); ~x,_A>a  
} ,<%uG6/",g  
RlL ]p`g  
private void mergeSort(int[] data, int[] temp, int l, int r) { JW[6 ^Rw  
int i, j, k; H}kZ;8  
int mid = (l + r) / 2; vWoppt  
if (l == r) oM!&S'M/  
return; 'd$RNqe  
if ((mid - l) >= THRESHOLD) T<0r,  
mergeSort(data, temp, l, mid); H7tv iSTd  
else /X_L>or  
insertSort(data, l, mid - l + 1); |)!f".`  
if ((r - mid) > THRESHOLD) BEaF-*?A  
mergeSort(data, temp, mid + 1, r);  !vf:mMo  
else "HJ^>%ia  
insertSort(data, mid + 1, r - mid); BjfVNF;hk:  
jXeE]A"  
for (i = l; i <= mid; i++) { n!z!fh  
temp = data; 9PKXQp  
} F~6]II  
for (j = 1; j <= r - mid; j++) { o>8~rtl  
temp[r - j + 1] = data[j + mid]; ikc1,o  
} !*:g??[T  
int a = temp[l]; {ze69 h  
int b = temp[r]; V#w$|2  
for (i = l, j = r, k = l; k <= r; k++) { l48$8Mgrr  
if (a < b) { "/6#Z>y  
data[k] = temp[i++]; Cy?]o?_?  
a = temp; R/v|ZvI  
} else { #S?^?3d  
data[k] = temp[j--]; 'l^Bb#)"  
b = temp[j]; 8S#$'2sT  
} X0 |U?Ib?  
} P6GTgQ<'BA  
} X6 BIZ  
]!AS%D`  
/** )<V!lsUx'-  
* @param data 06&;GW!-  
* @param l "yw{A%J  
* @param i $^fF}y6N  
*/ oUnb-,8n  
private void insertSort(int[] data, int start, int len) { anW['!T9{s  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 1TTS@\  
} G K~A,Miqk  
} c)#7T<>*'  
} H7+z"^s*  
} tM"vIz 05  
j:cu;6|  
堆排序: :Ob4WU  
9!jF$  
package org.rut.util.algorithm.support; TQO|C?  
 s;bGg  
import org.rut.util.algorithm.SortUtil; IB# ua:  
CCG 5:xS  
/** P-ZvW<M  
* @author treeroot tkV[^OeU>  
* @since 2006-2-2 PWS8Dpb  
* @version 1.0 R7rM$|n=o  
*/ H&ek"nP_  
public class HeapSort implements SortUtil.Sort{ _XZK2Q[  
O83J[YuzjN  
/* (non-Javadoc) --y,ky#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7Z2D}O +  
*/ !7\dr )  
public void sort(int[] data) { ^ q ba<#e  
MaxHeap h=new MaxHeap(); Byw EoS  
h.init(data); o% +w:u.  
for(int i=0;i h.remove(); yI8 O#  
System.arraycopy(h.queue,1,data,0,data.length); iyCH)MA  
} xytWE:=  
P4"BX*x  
private static class MaxHeap{ 4}D&=0IZ  
e6'0g=Y#   
void init(int[] data){ =?Ry,^=b  
this.queue=new int[data.length+1]; S".|j$  
for(int i=0;i queue[++size]=data; qDG x (d  
fixUp(size); 1 sza\pR<  
} 2A  
} LT{g^g  
=UO7!vr;[  
private int size=0; ]z7pa^  
Z .`+IN(>E  
private int[] queue; uq6>K/~D  
3U?gw!M>  
public int get() { $R ze[3  
return queue[1]; TQt[he$O  
} S9:ij1  
|(x%J[n0+  
public void remove() { _Iy)p{y  
SortUtil.swap(queue,1,size--); b6e 2a/x  
fixDown(1); T^8`ji  
} -;Mh|!yg  
file://fixdown M&Q&be84  
private void fixDown(int k) { 7KC2%s#7  
int j; &Kc45  
while ((j = k << 1) <= size) { f~?5;f:E  
if (j < size %26amp;%26amp; queue[j] j++; @pvQci  
if (queue[k]>queue[j]) file://不用交换 %j0c|u  
break; %j2:W\g:  
SortUtil.swap(queue,j,k); t:.X=/02  
k = j; sFk{Tv@Yz  
} p*$=EomY  
} \ Ho VS  
private void fixUp(int k) { ak}k e  
while (k > 1) { sAX4giaLD  
int j = k >> 1; "5,Cy3  
if (queue[j]>queue[k]) Z~ q="CA4  
break; 5=<fJXf5y  
SortUtil.swap(queue,j,k); ODCN~7-@  
k = j; q 3,p=ijJ  
} 7'.6/U  
} SX?hu|g_r  
3gCP?%R  
} BW`Tw^j  
-> 'q  
} (:# 4{C  
0oyZlv*  
SortUtil: k V'0rb  
rt! lc-g%/  
package org.rut.util.algorithm; dr=KoAIxy  
ui*CA^ Y  
import org.rut.util.algorithm.support.BubbleSort; "X1{*  
import org.rut.util.algorithm.support.HeapSort; P^/e!%UgC  
import org.rut.util.algorithm.support.ImprovedMergeSort; rYyEs I#qo  
import org.rut.util.algorithm.support.ImprovedQuickSort; Zg;Ht  
import org.rut.util.algorithm.support.InsertSort; 8{.:$T  
import org.rut.util.algorithm.support.MergeSort; B&lF! ]  
import org.rut.util.algorithm.support.QuickSort; O;;vz+ j  
import org.rut.util.algorithm.support.SelectionSort; `yb,z   
import org.rut.util.algorithm.support.ShellSort; -QydUr/(o  
~o/e0  
/** 0K^G>)l  
* @author treeroot WB|SXto%4D  
* @since 2006-2-2 h,Tsb:Q"M  
* @version 1.0 #kEa&Se  
*/ ,OO0*%  
public class SortUtil { | )R{(AK-  
public final static int INSERT = 1; SJI+$L\'  
public final static int BUBBLE = 2; 5zI I4ukn*  
public final static int SELECTION = 3;  ^pZ\:  
public final static int SHELL = 4; DU[vLe|Z  
public final static int QUICK = 5; BB m;QOBU  
public final static int IMPROVED_QUICK = 6; iu.+bX|b  
public final static int MERGE = 7; R<-(  
public final static int IMPROVED_MERGE = 8; \c$! C8z  
public final static int HEAP = 9; :~]ha  
{-Y% wM8<i  
public static void sort(int[] data) { JS1''^G&.  
sort(data, IMPROVED_QUICK); Q2/ZO2  
} > jvi7  
private static String[] name={ |Gh~Zu p  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" }M9L,O*^   
}; Z:}d\~`x$%  
!pLQRnI}6  
private static Sort[] impl=new Sort[]{ x+7jJ=F  
new InsertSort(), :X;' 37o#q  
new BubbleSort(), $n?@zd@53  
new SelectionSort(), Y/_b~Ahn  
new ShellSort(),  cUz7F  
new QuickSort(), pTlNJ!U>  
new ImprovedQuickSort(), H-o>| C  
new MergeSort(), bO%bMZWB!y  
new ImprovedMergeSort(), n089tt=TE  
new HeapSort() (1(dL_?  
}; hqVFb.6[  
e" f/  
public static String toString(int algorithm){ QvH=<$  
return name[algorithm-1]; DLv\]\h}L  
} |%R}!O<.c  
SablF2doa  
public static void sort(int[] data, int algorithm) { o'Byuct  
impl[algorithm-1].sort(data); 2\M^ _x$N  
} c _li.]P  
7 Ld5  
public static interface Sort { #B3P3\  
public void sort(int[] data); B#_<?  
} I|*w?i*  
.>0j<|~  
public static void swap(int[] data, int i, int j) {  3%G>TB  
int temp = data; tB_GEt2M  
data = data[j]; C$~2FTx  
data[j] = temp; )Fh+6  
} 9"3 7va  
} :O}=$[  
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