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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。 \(nb >K  
插入排序: U{IY F{;@  
7j>NUx=j3  
package org.rut.util.algorithm.support; ?e`4 s f_~  
;g3z?Uz)  
import org.rut.util.algorithm.SortUtil; d},IQ,Az:Z  
/** lZY0A#   
* @author treeroot hPC t-  
* @since 2006-2-2 Bf72 .gx{0  
* @version 1.0 0{ZYYB&"~J  
*/ Bs@!S?  
public class InsertSort implements SortUtil.Sort{ 6@7K\${  
hi{#HXa  
/* (non-Javadoc) A`=;yD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .4M8  
*/ 0XrB+nt  
public void sort(int[] data) { Ub0hISA  
int temp; !)jw o=l}J  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^w0V{qF{  
} 61Z#;2]  
} (M1HNIM;(  
} O'6zV"<P  
p.r \|  
} Zz"b&`K  
7}r!&Eb  
冒泡排序: ZP@or2No%  
Q9(J$_:  
package org.rut.util.algorithm.support; z (N3oBW  
QT1(= wK3  
import org.rut.util.algorithm.SortUtil; ugtzF  
}Yi)r*LI3  
/** dmq<vVxC  
* @author treeroot wq|~[+y  
* @since 2006-2-2 G}o?lo\#h  
* @version 1.0 i+/:^tc;  
*/ )Ir_:lk  
public class BubbleSort implements SortUtil.Sort{ H-?wEMi)*u  
h'i8o>7  
/* (non-Javadoc) 9;Z2.P"w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 63s<U/N  
*/ +N161vo7  
public void sort(int[] data) { 'bH',X8gF  
int temp;  0p8Z l  
for(int i=0;i for(int j=data.length-1;j>i;j--){ x=+R0ny  
if(data[j] SortUtil.swap(data,j,j-1); a,o>E4#c  
} _xg4;W6M=  
} }pE8G#O&  
} @S/PB[%S  
} l!n<.tQW  
Qfhhceb6#J  
} ep"YGx  
64Ot`=A"  
选择排序: GVFR^pzO  
)$V&Nf  
package org.rut.util.algorithm.support; vepZod}D  
.g CC$  
import org.rut.util.algorithm.SortUtil; ;5wmQFr  
`w_?9^7mH  
/** 4T*RJ3Fz!  
* @author treeroot y-UutI&  
* @since 2006-2-2 r ]XXN2[jO  
* @version 1.0 -29 Sw  
*/ o8 A]vaa  
public class SelectionSort implements SortUtil.Sort { / 38b:,  
8 S'g%  
/* J 4$^Hr  
* (non-Javadoc) /PP\L](  
* Rp~#zt9:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =1dU~B:Lm  
*/ OSQt:58K  
public void sort(int[] data) { 5K1WfdBX7)  
int temp; P);: t~  
for (int i = 0; i < data.length; i++) { 5rAI[r 9  
int lowIndex = i; m oQ><>/  
for (int j = data.length - 1; j > i; j--) { ZE#f{qF(  
if (data[j] < data[lowIndex]) { j@1rVOmK  
lowIndex = j; wi#]*\N\9  
} NLe+  
} 'xNPy =#  
SortUtil.swap(data,i,lowIndex); .s4hFB^n  
} U] 2fV|Hn  
} Jjb(lW  
V\ ud4  
} O[p;IG`  
-Yaw>$nJ  
Shell排序: x+V;UD=mH  
>U~B"'!xV  
package org.rut.util.algorithm.support; _":yUa0D  
Ua.7_Em  
import org.rut.util.algorithm.SortUtil; )PC(1Zn  
;4jRsirx9  
/** Mr}]P(4h  
* @author treeroot )"  H$1  
* @since 2006-2-2 =-M)2&~L~  
* @version 1.0 nZF(92v  
*/ 9N9dQ}[:g  
public class ShellSort implements SortUtil.Sort{ 0phO1h]2S)  
.xtjB8gc  
/* (non-Javadoc) B/IPG~aMEZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F+;{s(wx  
*/ o C]tEXJ  
public void sort(int[] data) { B,SH9,  
for(int i=data.length/2;i>2;i/=2){ qyP|`Pm4  
for(int j=0;j insertSort(data,j,i); zy(i]6  
} 1'5I]D ec  
} ZeD""vJRY  
insertSort(data,0,1); )oOcV%  
} @MfuV4*  
zcrLd={  
/** {;(X#vK}9  
* @param data LGN,8v<W(  
* @param j /K mzi9j+  
* @param i (wmMHo|  
*/ d*26;5~\  
private void insertSort(int[] data, int start, int inc) { M\wIpRD,  
int temp; 5YJn<XEc  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 1y5]+GU'`  
} iSTr;>A  
} <BIj a  
} Vp $]  
$or?7 w>  
} }i1p &EN^  
)hH9VGZq(  
快速排序: GyV3]Qqj  
?^i$} .%W  
package org.rut.util.algorithm.support; g-=)RIwm  
tt=?*n  
import org.rut.util.algorithm.SortUtil; $tyF(RybG  
?iH`-SY  
/** ,jWMJ0X/N=  
* @author treeroot i/rdPbq  
* @since 2006-2-2 /#Y)nyE  
* @version 1.0 M.K-)r,  
*/ 73/kyu-0%  
public class QuickSort implements SortUtil.Sort{ s)$N&0\  
-Iz&/u*}f  
/* (non-Javadoc) EAQg4N:D7L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7%Zl^c>q  
*/ 4!Ez#\  
public void sort(int[] data) { `d#l o  
quickSort(data,0,data.length-1); ScrEtN  
} $AAv%v  
private void quickSort(int[] data,int i,int j){ MnvFmYgxA  
int pivotIndex=(i+j)/2; .BGM1ph}~  
file://swap "|CzQ&e  
SortUtil.swap(data,pivotIndex,j); ^(I4Do~}  
.s 31D%N  
int k=partition(data,i-1,j,data[j]); ]%IcUd}  
SortUtil.swap(data,k,j); &6A'}9Ch  
if((k-i)>1) quickSort(data,i,k-1); i<|5~tm  
if((j-k)>1) quickSort(data,k+1,j); @psyO]D=j%  
^Ye i9bXl  
} "}UJ~ j).  
/** ODK$G [-  
* @param data *>!O2c  
* @param i E6n3[Z  
* @param j kVs'>H@FY  
* @return =>Y b~r71  
*/ &LE,.Q34  
private int partition(int[] data, int l, int r,int pivot) { Zam.g>{]  
do{ ^yH!IRRAq  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); PL/as3O^A  
SortUtil.swap(data,l,r); .Gv9RKgd~  
} E"5 z T1d  
while(l SortUtil.swap(data,l,r); #q1Qa_LXc  
return l; 0es[!  
} X3#/|>  
k"|4 LPv[  
} '3Yci(t+  
I|lz;i}$  
改进后的快速排序: Z~{0XG\Y  
D<$~bUkxR  
package org.rut.util.algorithm.support; /5 Wy) -  
i"%X[(U7  
import org.rut.util.algorithm.SortUtil; |R:gu\gG  
R6~x!  
/** I%^Ks$<"  
* @author treeroot ^"\ jIP  
* @since 2006-2-2 vz:P 2TkM  
* @version 1.0 Q[^IX  
*/ zCKZv|j6  
public class ImprovedQuickSort implements SortUtil.Sort { {J q[N}  
T;jp2 #  
private static int MAX_STACK_SIZE=4096; kM5N#|!  
private static int THRESHOLD=10; \o9-[V#Gm  
/* (non-Javadoc) hK"hMyH^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1g6AzUXg  
*/ 9;s:Bo  
public void sort(int[] data) { v5l)T}Nb  
int[] stack=new int[MAX_STACK_SIZE]; ^'i(@{{o\  
jq#_*&Eg]  
int top=-1; WyVFh AuU  
int pivot; ZzLmsTtzIu  
int pivotIndex,l,r; {.$5:<8aC  
*@=in7*c  
stack[++top]=0; 7P O3{I  
stack[++top]=data.length-1; ;T~]|#T\6  
S?nk9 T+  
while(top>0){ j?%^N\9  
int j=stack[top--]; :#58m0YLA:  
int i=stack[top--]; 8 $0D-z  
Zpg/T K  
pivotIndex=(i+j)/2; pDb5t>  
pivot=data[pivotIndex]; "P HkbU  
0F-X.Dq  
SortUtil.swap(data,pivotIndex,j); w*<XPBi  
#pP4\n-~hU  
file://partition t m?[0@<s  
l=i-1; q\ FF)H  
r=j; !"/]<OQ   
do{ $Z6g/bD`E  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ~4h<nc  
SortUtil.swap(data,l,r); r=P)iE:  
} zb.^ _A  
while(l SortUtil.swap(data,l,r); =gS?atbX  
SortUtil.swap(data,l,j); Aifc0P-H  
#j -bT4!  
if((l-i)>THRESHOLD){ \Zz"%i  
stack[++top]=i; W[BZ/   
stack[++top]=l-1; 1ael{b!  
} D7|[:``  
if((j-l)>THRESHOLD){ GL$!JKWp  
stack[++top]=l+1; WZO8|hY  
stack[++top]=j; uc!j`G*]  
} S9R(;  
`s5<PCq  
} X.hU23w  
file://new InsertSort().sort(data); :)VO,b~r  
insertSort(data); lxb+0fiN  
} e5G)83[=  
/** .zQ:u{FT  
* @param data )9F-h8 &"  
*/ %jz]s4u$5j  
private void insertSort(int[] data) { 0fwmQ'lW(  
int temp; |N_tVE  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); m3W:\LTTp  
} >QO^h<.>  
} )3 #gpM  
} +\g/KbV7  
X{4jyi-<  
} /a.4atb0  
|f), dC  
归并排序: |U{9Yy6p  
|{ W4JFKJ  
package org.rut.util.algorithm.support; ly"Jl8/<  
k7JE{(Ok  
import org.rut.util.algorithm.SortUtil; 0$)s? \  
q1ybJii  
/** "%fh`4y3\  
* @author treeroot r09gB#K4  
* @since 2006-2-2 `G*7y7  
* @version 1.0 zQ3m@x  
*/ +GCN63 nX  
public class MergeSort implements SortUtil.Sort{ ;6S,|rC ]  
XN9s!5A<L)  
/* (non-Javadoc) V/|).YG2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :T^!<W4  
*/ wKOljE6d  
public void sort(int[] data) { & $E[l'  
int[] temp=new int[data.length]; uQh dg4  
mergeSort(data,temp,0,data.length-1); \7rAQ[\#V  
} .nN=M>#/  
X`i'U7%I  
private void mergeSort(int[] data,int[] temp,int l,int r){ )!6JSMS  
int mid=(l+r)/2; <T]%Gg8  
if(l==r) return ; -]""Jl^  
mergeSort(data,temp,l,mid); Zjis0a]v~k  
mergeSort(data,temp,mid+1,r); MMlryn||1  
for(int i=l;i<=r;i++){ kQ~2mU  
temp=data; {!!df.h  
} !5,>[^y3  
int i1=l; |^fubQs;2  
int i2=mid+1; ql"&E{u?  
for(int cur=l;cur<=r;cur++){ gc(Gc vdB\  
if(i1==mid+1) ]0v;;PfVl6  
data[cur]=temp[i2++]; ^b|Z<oF  
else if(i2>r) H$'|hUwds%  
data[cur]=temp[i1++]; U\aP  
else if(temp[i1] data[cur]=temp[i1++]; =k.:XblEe[  
else EdGA#i3  
data[cur]=temp[i2++]; sF9{(Us  
} +&hhj~I.  
} <0lXJqd  
aAM!;3j]B`  
} F6>K FU8  
.*XELP=BT  
改进后的归并排序: EUBJnf:q  
+;z^qn  
package org.rut.util.algorithm.support; W P7RX|7  
& Tz@lvOv%  
import org.rut.util.algorithm.SortUtil; vBy t_X  
t^ _0w[  
/** V{!fag  
* @author treeroot #yNSQd  
* @since 2006-2-2 Br/qOO:n$}  
* @version 1.0 6oTWW@  
*/ {g8uMt\4  
public class ImprovedMergeSort implements SortUtil.Sort { kk|7{83O  
G!]%xFwYa  
private static final int THRESHOLD = 10; ,RmXZnWY  
h>ZNPP8N  
/* 9%fd\o@X  
* (non-Javadoc) oCtg{*vp  
* $cl[Qcw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;]*V6!6RR  
*/ wQ1_Q8:Z  
public void sort(int[] data) { U@t" o3E  
int[] temp=new int[data.length]; $DPMi9,7^  
mergeSort(data,temp,0,data.length-1); /|7@rH([{  
} tW<i;2 l  
EY3x o-H  
private void mergeSort(int[] data, int[] temp, int l, int r) { E :gS*tsY  
int i, j, k; w+A:]SU  
int mid = (l + r) / 2; %v}SJEXF p  
if (l == r) 0e./yPTT  
return; 2_S%vA<L  
if ((mid - l) >= THRESHOLD) 2MT_5j5[N  
mergeSort(data, temp, l, mid); $db]b  
else 1D2Uomd(  
insertSort(data, l, mid - l + 1); $;O-1# ]  
if ((r - mid) > THRESHOLD) #h,7dz.d  
mergeSort(data, temp, mid + 1, r); nP]tc  
else X;2I' Kg  
insertSort(data, mid + 1, r - mid); IZ){xI  
99QMMup  
for (i = l; i <= mid; i++) { !LGnh  
temp = data; ku2g FO  
} s |40v@ M  
for (j = 1; j <= r - mid; j++) { |W't-}yf  
temp[r - j + 1] = data[j + mid]; Wp2W:JX:  
} @|I:A  
int a = temp[l]; R$>]7-N}  
int b = temp[r]; @ P:b\WCI  
for (i = l, j = r, k = l; k <= r; k++) { 0[A4k:  
if (a < b) { {;:QY 1Q T  
data[k] = temp[i++]; 48}L!m @  
a = temp; cb36~{  
} else { ZD$W>'m{F  
data[k] = temp[j--]; NxOiT#YH  
b = temp[j]; l'yX_`*Iq  
} :+ASZE.  
} U2Uf69R  
} 7CKpt.Sz6  
Tbf@qid e  
/** 8(AI|"A"-  
* @param data | aAu 4   
* @param l oAnNdo  
* @param i ^Rel-=Z$B  
*/ ^{ Kj{M22  
private void insertSort(int[] data, int start, int len) { rTJ='<hIy  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ` u|8WK:  
} b*;zdGX.A9  
} Fe:M'.  
} Cx N]fo  
} W|~Jl7hs8Q  
4[\$3t.L  
堆排序: / 7i>0J]  
@M]uUL-ze  
package org.rut.util.algorithm.support; $ 12mS  
;Avz%2#c`  
import org.rut.util.algorithm.SortUtil; YwbRzY-#F  
d]3c44kkK{  
/** Yg @&@S]  
* @author treeroot m=s aUhI*9  
* @since 2006-2-2 XwZ~pY ~  
* @version 1.0 M-#OPj*  
*/ Lg;b17  
public class HeapSort implements SortUtil.Sort{ YN=dLr([<  
UU7E+4O&  
/* (non-Javadoc) "-y 2En  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cpIFjb>u{  
*/ p3m!Iota  
public void sort(int[] data) { 7g* "AEk  
MaxHeap h=new MaxHeap(); @Feusprs  
h.init(data); b 8vyJb,K  
for(int i=0;i h.remove(); -dj9(~?^  
System.arraycopy(h.queue,1,data,0,data.length); 5hhiP2q  
} /*V:Lh  
p"xti+2,  
private static class MaxHeap{ o {W4@:Ib  
R*"31&3le4  
void init(int[] data){ Qkk3>{I  
this.queue=new int[data.length+1];  +*W9*gl  
for(int i=0;i queue[++size]=data; 3 s@6pI  
fixUp(size); ;~A-32;Y4  
} ^#6"d+lp  
} S!LLC{  
|b BA0.yS  
private int size=0; 4qd =]i  
)td?t.4  
private int[] queue; # NoY}*  
$0kuR!U.N  
public int get() { qdM=}lbc  
return queue[1]; gs xT  
} Q3@MRR^tY  
X0QY:?  
public void remove() { !!{!T;)l  
SortUtil.swap(queue,1,size--); f1Z  
fixDown(1); LTn@OhC  
} nV[0O8p2Md  
file://fixdown : ~R Y  
private void fixDown(int k) { {6y@;Fd  
int j; @;6I94Bp  
while ((j = k << 1) <= size) { #5Q?Q~E@  
if (j < size %26amp;%26amp; queue[j] j++; "M-zBBY]  
if (queue[k]>queue[j]) file://不用交换 Hm>7|!  
break; yLC5S3^1\"  
SortUtil.swap(queue,j,k); &J]|pf3m  
k = j; 4 6yq F  
} [Iwb7a0p  
} m L#%H(  
private void fixUp(int k) { xr;:gz!h  
while (k > 1) { ""Ub^:ucD  
int j = k >> 1; 8C[W;&Y=  
if (queue[j]>queue[k]) &N+,{7.  
break; ?k|}\l[X1  
SortUtil.swap(queue,j,k); D2,2Yy5 y  
k = j; NcuZw?  
} H'2J!/V  
} ,qj1"e  
n#US4&uT4A  
} 3 L:s5  
~.:9~(2;  
} T z`O+fx &  
k@[P\(a3b  
SortUtil: J~e%EjN5e  
T#o?@ ;  
package org.rut.util.algorithm; o+w G6 9  
'\,|B x8Q  
import org.rut.util.algorithm.support.BubbleSort; ?k 4|;DD  
import org.rut.util.algorithm.support.HeapSort; Iu)76Y@=5=  
import org.rut.util.algorithm.support.ImprovedMergeSort; M%3P@GRg  
import org.rut.util.algorithm.support.ImprovedQuickSort; &8!~H<S  
import org.rut.util.algorithm.support.InsertSort; &rc]3! B  
import org.rut.util.algorithm.support.MergeSort; ]* #k|>Fl  
import org.rut.util.algorithm.support.QuickSort; Np.] W(  
import org.rut.util.algorithm.support.SelectionSort; v^;p]_c~2  
import org.rut.util.algorithm.support.ShellSort; T?DX|?2X  
'j#J1 xwJ  
/** Au=9<WB%H  
* @author treeroot Q#h*C ZT  
* @since 2006-2-2 `U.VfQR:  
* @version 1.0 u%s@B1j  
*/ y8HwyU>  
public class SortUtil { K3;lst>4  
public final static int INSERT = 1; . `ND  
public final static int BUBBLE = 2; QE#Ar8tU  
public final static int SELECTION = 3; G $F3dx.I  
public final static int SHELL = 4; San=E@3}v!  
public final static int QUICK = 5; #A:+|{H"  
public final static int IMPROVED_QUICK = 6; ]N& Y25oT5  
public final static int MERGE = 7; #GlQwk3  
public final static int IMPROVED_MERGE = 8; 5n1aRA1  
public final static int HEAP = 9; ZCcKY6b  
.{=|N8*py8  
public static void sort(int[] data) { 5PRS|R7  
sort(data, IMPROVED_QUICK); |_} LMkU)  
} ,Fv8&tR  
private static String[] name={ _MI8P/  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" }|Ao@UvH  
}; 4t]YHLBS  
<mk'n6B  
private static Sort[] impl=new Sort[]{ VEc^Ap1?'  
new InsertSort(), 1 7..  
new BubbleSort(), W ZAkp|R  
new SelectionSort(), 'g@Yra&09  
new ShellSort(), @[=K`n:n_  
new QuickSort(), (v@)nv]U  
new ImprovedQuickSort(), zK_+UT  
new MergeSort(), q!OB?03n  
new ImprovedMergeSort(), 1Z$` }a  
new HeapSort() K<g<xW*X  
}; Ofm?`SE*|  
xh90qm  
public static String toString(int algorithm){ >QcIrq%=  
return name[algorithm-1]; Vzmw%f)_+  
} 7<Yf  
O/N@ Gz[g%  
public static void sort(int[] data, int algorithm) { A><q-`bw  
impl[algorithm-1].sort(data); HT% =o}y  
} nF)XZB 0F  
*}@zxFe +  
public static interface Sort { 01_*^iCf5  
public void sort(int[] data); CD"D^\z  
} 89kxRH\IhG  
;Pd nE~  
public static void swap(int[] data, int i, int j) { &hSABtr}  
int temp = data; )*CDufRFz  
data = data[j]; [dXpz^Co  
data[j] = temp; ^tr?y??k  
} C-:lM1  
} HO`N]AMw  
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3+5=?,请输入中文答案:八 正确答案:八