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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。 '3aDvV0  
插入排序: IYb@@Jzo  
|v:8^C7  
package org.rut.util.algorithm.support; RR*<txdN  
>cQ*qXI0  
import org.rut.util.algorithm.SortUtil; 5,k&^CK}  
/** Ju Kj  
* @author treeroot OiZPL"Q(K  
* @since 2006-2-2 VWaI!bK  
* @version 1.0 h{VCx#!]  
*/ JmtU>2z\  
public class InsertSort implements SortUtil.Sort{ #P<v[O/rA  
.^fq$7Y}7  
/* (non-Javadoc) B/&axm%0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^;!A`t  
*/ {eMu"<  
public void sort(int[] data) { [-=PK\ B  
int temp; Cir==7A0  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); V.>'\b/#  
} $*{PUj  
} fOF02WP^  
}  3_+-t5  
s-J>(|  
} S2@[F\|r  
4hr;k0sD  
冒泡排序: FU E/uh  
b Bb$0HOF  
package org.rut.util.algorithm.support; t=d~\_Oa  
3W5|Y@0  
import org.rut.util.algorithm.SortUtil; Ot`jjZ&  
dc|"34;^"  
/** 2X&~!%-  
* @author treeroot ;lB%N t<,  
* @since 2006-2-2 ?sfA/9"  
* @version 1.0 C7[_#1Oz  
*/ x;?4AJ{  
public class BubbleSort implements SortUtil.Sort{ =\eM -"r  
y4tM0h  
/* (non-Javadoc) MMN2X xS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tz4MT_f  
*/ 'p80X^g  
public void sort(int[] data) { pn{Mj  
int temp; . Zrt/;  
for(int i=0;i for(int j=data.length-1;j>i;j--){ $pyM<:*L&<  
if(data[j] SortUtil.swap(data,j,j-1); FVPhk2  
} nw+L _b  
} ;cH|9m:Y  
} tO~DA>R  
} 3k` "%R.H  
>pW8K[  
} cKEf- &~  
d kHcG&)  
选择排序: +AhR7R!  
^o+2:G5z}  
package org.rut.util.algorithm.support; OmQSNU.our  
H$>D_WeJ  
import org.rut.util.algorithm.SortUtil; ({zt=}r,  
p+ SFeUp  
/** IAf,TKfe  
* @author treeroot yv =LT~  
* @since 2006-2-2 BG_m}3j  
* @version 1.0 yH#zyO4fD-  
*/ i[`nu#n/  
public class SelectionSort implements SortUtil.Sort { b#(SDNo6  
ywXerz7dUk  
/* C '4u+raq  
* (non-Javadoc) .;ml[DXH  
* 2+M(!FHfy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y8HLrBTza  
*/ TS^(<+'  
public void sort(int[] data) { }jBr[S5  
int temp; l~!Tnp\M  
for (int i = 0; i < data.length; i++) { #Z;ziM:  
int lowIndex = i; "(PJh\S>S  
for (int j = data.length - 1; j > i; j--) { QDYS}{A:V  
if (data[j] < data[lowIndex]) { 58,_  
lowIndex = j; t uo'4%]i  
} UeV2`zIg`  
} JM!rop^  
SortUtil.swap(data,i,lowIndex); rVowHP  
} I~H:-"2  
} '31pb9@fH  
-BfZ P5  
} `~vqu69MF9  
KT~J@];Fb  
Shell排序: A(X~pP &oF  
?6+GE_VZ  
package org.rut.util.algorithm.support; #~*fZ|sq+3  
u`dWU}m)  
import org.rut.util.algorithm.SortUtil; 9_V'P]@  
u6IEBYG ((  
/** 85Zy0l  
* @author treeroot p/>}{Q )Y  
* @since 2006-2-2 jo{[*]Oa  
* @version 1.0 &MsnQP  
*/ 3ddH@Y|  
public class ShellSort implements SortUtil.Sort{ %>`0hk88  
}&sF \b  
/* (non-Javadoc) GV#"2{t j  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D@*<p h=  
*/ YbB8D-  
public void sort(int[] data) { fQRGz\r*k  
for(int i=data.length/2;i>2;i/=2){ A+w51Q  
for(int j=0;j insertSort(data,j,i); gd^1c}UZX  
} a<7Ui;^@  
} wG6>.`:  
insertSort(data,0,1); j:B?0~=  
} O`5PX(J1&  
;W,XP#{W  
/** 5xX*68]%  
* @param data uq~$HXdc  
* @param j <3zA|  
* @param i zC #[  
*/ <x@brXA  
private void insertSort(int[] data, int start, int inc) { <o,]f E[  
int temp; yM>:,TS  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 37Ux2t  
} ts/ rV#s~  
} 'MH WNPG0  
} T(zE RWo  
2Sbo7e  
} aal5d_Y  
&Iv3_T<AF  
快速排序: eFS;+?bu  
*-"DZ  
package org.rut.util.algorithm.support; kSoa '  
2<53y~Yi%  
import org.rut.util.algorithm.SortUtil; - `F#MN  
c+$alw L~  
/** !j[Oy r|  
* @author treeroot _1_CYrUc  
* @since 2006-2-2 ~x;1&\'k  
* @version 1.0 N9@@n:JT  
*/ l?GN& u  
public class QuickSort implements SortUtil.Sort{ w:%3]2c  
uz-O%R-  
/* (non-Javadoc) h^o>9s/|/H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &U/7D!^X  
*/ :4RD .l  
public void sort(int[] data) { uj#bK 7  
quickSort(data,0,data.length-1); yop,%Fe  
} sbn|D\p  
private void quickSort(int[] data,int i,int j){ [~e{58}J|  
int pivotIndex=(i+j)/2; 6\"g,f  
file://swap nv>|,&;  
SortUtil.swap(data,pivotIndex,j); MNd8#01q`  
9XtR8MH  
int k=partition(data,i-1,j,data[j]); &L6xagR7M  
SortUtil.swap(data,k,j); eT 8(O36%  
if((k-i)>1) quickSort(data,i,k-1); sk* AlSlM  
if((j-k)>1) quickSort(data,k+1,j); Hw[(v[v  
Yzo_ZvL  
} $OEhdz&Fi  
/** $M%<i~VXe&  
* @param data qQ\&]  
* @param i 4rkj$  
* @param j Si=zxy T  
* @return M.B0)  
*/ "Z xM,kI  
private int partition(int[] data, int l, int r,int pivot) { 'u"r^o?  
do{ S ?v^/F  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); qz]b8rX  
SortUtil.swap(data,l,r); +<qmVW^X  
} I !\;NVhv  
while(l SortUtil.swap(data,l,r); q6E8^7RtS@  
return l; J* V@huF  
} jm~(OLg  
NlLgXn!  
} fd Vye|%  
eYSVAj  
改进后的快速排序: VL6_in(  
Wp5w}8g  
package org.rut.util.algorithm.support; >v1E;-ZA  
"^?|=sQ  
import org.rut.util.algorithm.SortUtil; 4q%hn3\  
xOfZ9@VU  
/** &dA{<.  
* @author treeroot g$=y#<2?  
* @since 2006-2-2 ~r(/)w\  
* @version 1.0 B^8]quOH  
*/ AH?T}t2  
public class ImprovedQuickSort implements SortUtil.Sort { wD9Gl.uQ  
4(2iR0N  
private static int MAX_STACK_SIZE=4096; P?QVT;]  
private static int THRESHOLD=10; 2VSs#z!  
/* (non-Javadoc) m5Q?g8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y~ubH{O#  
*/ {~cG'S Y%  
public void sort(int[] data) { BgPwIK x  
int[] stack=new int[MAX_STACK_SIZE]; <|qh5Scp  
ZAK NyA2  
int top=-1; zpPzXQv]/  
int pivot; =^nb-9.  
int pivotIndex,l,r; QY$Z,#V)  
.Ioj]r  
stack[++top]=0; Z{' .fq2A  
stack[++top]=data.length-1; !%v=9muay  
H2EKr#(  
while(top>0){ P.8CFl X  
int j=stack[top--]; +A 3Q$1F  
int i=stack[top--]; A4C4xts]N  
h~\bJ*Zp  
pivotIndex=(i+j)/2; %Fb4   
pivot=data[pivotIndex]; ez2rCpA  
zYL</!6a[  
SortUtil.swap(data,pivotIndex,j); ^M51@sXI7  
6[iuCMOZ  
file://partition +y}4^3Vx^  
l=i-1; BK+(Uf;g  
r=j; O(P ,!  
do{ -Odk'{nW  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); PA=.)8  
SortUtil.swap(data,l,r); L%3m_'6QP  
} /Dh[lgF0C  
while(l SortUtil.swap(data,l,r); |G!PG6%1  
SortUtil.swap(data,l,j); rSGt`#E-s.  
4nIs+  
if((l-i)>THRESHOLD){ !a(#G7zA  
stack[++top]=i; #5Zf6w  
stack[++top]=l-1; 'Fe1]B"Y  
} 9)_fH6r  
if((j-l)>THRESHOLD){ W0++q=F  
stack[++top]=l+1; ^5"2s:vP  
stack[++top]=j; 4sj:%% UE  
} &n5Lc`  
q;XO1Se  
} 9PpPAF  
file://new InsertSort().sort(data); L `7~~  
insertSort(data); btQDG  
} )v4?+$g  
/** ;k<n}shD  
* @param data `2 vv8cg^  
*/  3,7SGt r  
private void insertSort(int[] data) { 3IrmDT  
int temp; E0g` xf 6c  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 'h?;i2[  
} Q t!X<.  
} b IS 3  
} (l|:$%[0  
I 0/enL  
} -ZmccT"8  
ws{2 0  
归并排序: E"EBj7<s  
eyx;8v cM  
package org.rut.util.algorithm.support; 4h|48</  
=bVaB<!  
import org.rut.util.algorithm.SortUtil; N*k`'T  
0st)/\  
/** S\qYw(G  
* @author treeroot !,f#oCL  
* @since 2006-2-2 Jgf73IX[  
* @version 1.0 ^'UJ&UfX  
*/ ]5!}S-uJq  
public class MergeSort implements SortUtil.Sort{ -I#]#i@gX  
LI>tN R~  
/* (non-Javadoc) $;9zD11  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gC}r$ZB(  
*/ :/Zy=F9:  
public void sort(int[] data) { E(5'vr0  
int[] temp=new int[data.length]; R'#[}s  
mergeSort(data,temp,0,data.length-1); Ha U6`IP  
} )czuJ5  
I?) .D?o  
private void mergeSort(int[] data,int[] temp,int l,int r){ (s/hK  
int mid=(l+r)/2; EF7Y4lp  
if(l==r) return ; _L?`C  
mergeSort(data,temp,l,mid); g;bfi{8s_  
mergeSort(data,temp,mid+1,r); e}Y|' bG  
for(int i=l;i<=r;i++){ 0>uMR{ #  
temp=data; CS:"F) at  
} |<,!K;@  
int i1=l; 3NEbCILF  
int i2=mid+1; 2#sJ`pdQ  
for(int cur=l;cur<=r;cur++){ @O;gKFx  
if(i1==mid+1) "V|1w>s  
data[cur]=temp[i2++]; =Q % F~  
else if(i2>r) ,S|v>i, @  
data[cur]=temp[i1++]; QLq^[ >n  
else if(temp[i1] data[cur]=temp[i1++]; r!qr'Ht<  
else &_q&TEi  
data[cur]=temp[i2++]; 82w='~y  
} &E@8 z&  
} H /E.R[\+x  
u$7o d$&S  
} e8HGST`  
<NV[8B#k]  
改进后的归并排序: ;&|MNN^  
"Qf X&'09  
package org.rut.util.algorithm.support; lyBae?%&  
f'hrS}e  
import org.rut.util.algorithm.SortUtil; /8Sg<  
o% ZtE  
/** Z.a`S~U  
* @author treeroot PcXz4?Q$  
* @since 2006-2-2 _]SV@q^  
* @version 1.0 z(sfX}%  
*/ +{Qk9Z  
public class ImprovedMergeSort implements SortUtil.Sort { VdrqbZ   
WoP5[.G  
private static final int THRESHOLD = 10; OH2Xxr[bQ  
]>E)0<t  
/* 3)jFv7LAU  
* (non-Javadoc) _#6_7=g@s6  
* sdk%~RN0T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /%E X4 W  
*/ F iZe4{(p  
public void sort(int[] data) { (vX+ Yw  
int[] temp=new int[data.length]; )<_e{_ h  
mergeSort(data,temp,0,data.length-1); !(:R=J_h  
} ZPrL)']  
D6cqON0a.  
private void mergeSort(int[] data, int[] temp, int l, int r) { vrr&Ve  
int i, j, k; )bJS*#  
int mid = (l + r) / 2; MeD}S@H  
if (l == r) X,m6#vLK2  
return; dso6ZRx  
if ((mid - l) >= THRESHOLD) xcBV,[E{  
mergeSort(data, temp, l, mid); 84xA/BRW  
else p.(8ekh  
insertSort(data, l, mid - l + 1); &e2|]C4  
if ((r - mid) > THRESHOLD) T#ktC0W]h  
mergeSort(data, temp, mid + 1, r); HYd&.*41rE  
else oMM+af  
insertSort(data, mid + 1, r - mid); |y,%dFNLf  
zcF`Z {&+  
for (i = l; i <= mid; i++) { O=2"t%Gc  
temp = data; 74Fv9  
} N~c Y~a  
for (j = 1; j <= r - mid; j++) { !Ee#jCXS  
temp[r - j + 1] = data[j + mid]; : ,0F_["3  
} in>Os@e#  
int a = temp[l]; >A'Q9Tia;  
int b = temp[r]; *>m,7} L  
for (i = l, j = r, k = l; k <= r; k++) { ;,d^=:S6@  
if (a < b) { 6N7^`ghTf  
data[k] = temp[i++]; qnFi./  
a = temp; "x;|li3;  
} else { ]/G~ L  
data[k] = temp[j--]; T7F)'Mx<  
b = temp[j]; 5somoV B  
} :Nry |  
} 2P&KU%D)0s  
} adi^*7Q] )  
ssf.ef$  
/** <a=,{O  
* @param data uT")j,tz  
* @param l rn$LZE %  
* @param i ],!7S"{97  
*/ -w>2!@8  
private void insertSort(int[] data, int start, int len) { 2u B66i  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); M/!5r  
} G@Jl4iHug"  
} J5i$D0K[  
} #CRAQ#:45(  
} &:]ej6 V'[  
1[? xU:;9  
堆排序: **RW 9FU  
u]<7}R@s  
package org.rut.util.algorithm.support; 8y9`xRy  
h;s~I/e(  
import org.rut.util.algorithm.SortUtil; e!eUgD  
5eP0W#  
/** be@\5  
* @author treeroot [{K   
* @since 2006-2-2 fo$5WTY  
* @version 1.0 y2_^lW%  
*/ |._9;T-Yde  
public class HeapSort implements SortUtil.Sort{ l(o;O.dLt  
">-mZ'$#L  
/* (non-Javadoc) 4>JDo,AWy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  !623;   
*/ =|Q7k+b  
public void sort(int[] data) { [@"7qKd1  
MaxHeap h=new MaxHeap(); ~|FKl%  
h.init(data); NWN Pq"  
for(int i=0;i h.remove(); dg(fD>+  
System.arraycopy(h.queue,1,data,0,data.length); sKIpL(_I$  
} YtQsSU  
#3+-vyZm  
private static class MaxHeap{ ^GS,4[)H  
\G+uK:PC,  
void init(int[] data){ 2 c%*u {=:  
this.queue=new int[data.length+1]; J&vmW}&  
for(int i=0;i queue[++size]=data; `S&$y4|Vs  
fixUp(size); _QS+{  
} ,(D:cRN  
} !awsQ!e|  
CyWaXp65  
private int size=0; Gtyy^tz[  
*irYSTA$  
private int[] queue; [6$n  
x|TLMu=3=  
public int get() { 5os(.   
return queue[1]; qYwEPGa\  
} ~EV7E F  
 GD]yP..  
public void remove() { "b#L8kN  
SortUtil.swap(queue,1,size--); @@])B#  
fixDown(1); 5LIbHSK  
} 0Ud.u  
file://fixdown nw)yK%`;M  
private void fixDown(int k) { R cz;|h8  
int j; RV&=B%w+  
while ((j = k << 1) <= size) { Ki8]+W37  
if (j < size %26amp;%26amp; queue[j] j++; App9um3:  
if (queue[k]>queue[j]) file://不用交换 %GY U$aA  
break; YhZmyYamE  
SortUtil.swap(queue,j,k); IpRdGT02  
k = j; Z0(}doh  
}  4dd]Ju  
} 1pM"j!  
private void fixUp(int k) { |KC!6<}T~9  
while (k > 1) { ;1wRo`RD  
int j = k >> 1; npJyVh47  
if (queue[j]>queue[k]) Kc%GxD`  
break; ) vKZs:  
SortUtil.swap(queue,j,k); @5C!`:f  
k = j; 0fpxr`  
} pc=f,  
} TsvF~Gdp  
%]iDhXLr  
} LRuB&4r8  
q#mw#Uw-  
} HZ+l){u  
Pr!H>dH8o  
SortUtil: H/v|H}d;  
BbV@ziL  
package org.rut.util.algorithm; &rj)Oh2  
$U]KIHb  
import org.rut.util.algorithm.support.BubbleSort; v'vYN h  
import org.rut.util.algorithm.support.HeapSort; 1dl@2CVS  
import org.rut.util.algorithm.support.ImprovedMergeSort; ?_VoO  
import org.rut.util.algorithm.support.ImprovedQuickSort; j&c YRKpz  
import org.rut.util.algorithm.support.InsertSort; 9CxFj)#5F  
import org.rut.util.algorithm.support.MergeSort; T=kR!Gx  
import org.rut.util.algorithm.support.QuickSort; OX  r%b  
import org.rut.util.algorithm.support.SelectionSort; zo^34wW^  
import org.rut.util.algorithm.support.ShellSort; S=N3qBH6  
ZliJc7lss  
/** XuY#EJbZ  
* @author treeroot k|Syw ATr  
* @since 2006-2-2 Kz>Bw;R(  
* @version 1.0 0?{Y6:d+  
*/ Sp2<rI  
public class SortUtil { T|L_ +(M{  
public final static int INSERT = 1; b":3J)Y6.  
public final static int BUBBLE = 2; w|AHE  
public final static int SELECTION = 3; ]m(C}}  
public final static int SHELL = 4; )qL UHE=  
public final static int QUICK = 5; \D<w:\P  
public final static int IMPROVED_QUICK = 6; TGxmc37?  
public final static int MERGE = 7; H E'1Wa0r  
public final static int IMPROVED_MERGE = 8; Wt,t5  
public final static int HEAP = 9; _?YP0GpU  
U =G}@Y  
public static void sort(int[] data) { xaSg'8-  
sort(data, IMPROVED_QUICK); 68 *~5]  
} 'Wv`^{y <^  
private static String[] name={ WA$Ug  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" + bU*"5"  
}; FB\lUO)U\c  
z K+C&X  
private static Sort[] impl=new Sort[]{ ?: XY3!{  
new InsertSort(), ,+Bp>=pvs  
new BubbleSort(), H/I1n\  
new SelectionSort(), \H -,^[G3  
new ShellSort(), f0h^ULd  
new QuickSort(), 'ZUB:R@[  
new ImprovedQuickSort(), bFv,.(h'  
new MergeSort(), t'.oty=  
new ImprovedMergeSort(), O9_S"\8]@  
new HeapSort() \GFFPCi4 D  
}; M< 1rQW'  
n-5@<y^  
public static String toString(int algorithm){ yW!+:y_N_  
return name[algorithm-1]; Z6F^p8O-  
} |vI1C5e  
(0c L! N;;  
public static void sort(int[] data, int algorithm) { dPtQ Sa  
impl[algorithm-1].sort(data); pp!>:%  
} P\3$Y-id  
rF*L@HI  
public static interface Sort { 3ZhB 8 P  
public void sort(int[] data); M*xt9'Yd  
} r'GD  
Naqz":%.  
public static void swap(int[] data, int i, int j) { `Qg#`  
int temp = data; `Qrrnq  
data = data[j]; |*5QFp  
data[j] = temp; yE80*C~d  
} ':[:12y[  
} GY[+HgT  
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