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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。 R`!x<J  
插入排序: 5?kF'yksR  
.v/s9'lB  
package org.rut.util.algorithm.support; ~ 9^1m  
q 1Rk'k4+  
import org.rut.util.algorithm.SortUtil; ]wER&/v"  
/** 8QXxRD;0:  
* @author treeroot \m*?5]m ;  
* @since 2006-2-2 P7 H-Dw  
* @version 1.0 jxZ R%D  
*/ b@/z^k{%  
public class InsertSort implements SortUtil.Sort{ ) $#ov-]  
;jo,&C  
/* (non-Javadoc) `:}GE@]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2oGl"3/p  
*/ M _Z*F!al<  
public void sort(int[] data) { 7'J}|m{7  
int temp; kQsyvE  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); dAm( uJ  
} LXJ"ct  
} ]lXTIej`dy  
} Q<;f-9q @  
YB*ZYpRVl  
} 9bNjC&:4/]  
~+q$TV  
冒泡排序: CLdLO u"  
2%rAf8=  
package org.rut.util.algorithm.support; iNT1lk  
IT'~.!o7/  
import org.rut.util.algorithm.SortUtil; bJx{mq  
Tm.(gK  
/** w`CGDF\Oo  
* @author treeroot e7{3:y|]d3  
* @since 2006-2-2 ne oT\HV  
* @version 1.0 4u"V52  
*/ M$FQoRwH  
public class BubbleSort implements SortUtil.Sort{ OzA"i y  
"m3u}!`3  
/* (non-Javadoc) Y"K7$+5#\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dSS_^E[{  
*/ [6FCbzS_W  
public void sort(int[] data) { u;F++$=  
int temp; n^UrHHOL  
for(int i=0;i for(int j=data.length-1;j>i;j--){ iKv{)5  
if(data[j] SortUtil.swap(data,j,j-1); >C*q  
} 1WfN_JKB5  
} i(a2FKLy  
} Yih^ZTf]O?  
} xD8x1-  
n,wLk./`  
} dp&4G6Y<A  
Fm#4;'x5E  
选择排序: {I@@i8)]  
yCf*ts1  
package org.rut.util.algorithm.support; 53=VIN]  
#?@k=e\  
import org.rut.util.algorithm.SortUtil; ZcYxH|Gn  
i jg'X#E  
/** W&A22jO.1  
* @author treeroot bO>Mvf  
* @since 2006-2-2 C8m8ys  
* @version 1.0 }e9E+2}Z\  
*/ 51*o&:eim  
public class SelectionSort implements SortUtil.Sort { ([qw#!;w;  
&s_[~g<  
/* vh"zYl`  
* (non-Javadoc) >Yl?i&3n  
* ^}ngb Dn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b* no.eB  
*/ d?$FAy'o5  
public void sort(int[] data) { _Su? VxU  
int temp; [@eNb^ R  
for (int i = 0; i < data.length; i++) { zb OEF  
int lowIndex = i; qq]ZkT}   
for (int j = data.length - 1; j > i; j--) { $-|`#|CBd  
if (data[j] < data[lowIndex]) { VuN= JX  
lowIndex = j; &DYHkG  
} OHdC t  
} J)6RXt*!  
SortUtil.swap(data,i,lowIndex); Ep|W>  
} aW$sd)  
} 5 UpN/\He  
7i`@`0   
} )|~pocXt<  
~]*P/'-{#  
Shell排序: j,K]T J  
x\]%TTps  
package org.rut.util.algorithm.support; w`bojM@e1  
:D-My28'  
import org.rut.util.algorithm.SortUtil; I: P/ ?-  
7 M=LyrO  
/** /[#<@o  
* @author treeroot 7{ (t_N >  
* @since 2006-2-2 yEJ}!/  
* @version 1.0 EEEYNu/4/  
*/ ^%@(> :)0  
public class ShellSort implements SortUtil.Sort{ il(dVW  
c`yLn %Of%  
/* (non-Javadoc) 9fp1*d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [[}KCND  
*/ QmvhmsDL  
public void sort(int[] data) { $z"3_4a  
for(int i=data.length/2;i>2;i/=2){ vrXUS9i.  
for(int j=0;j insertSort(data,j,i); i(Cd#1<  
} 02g}}{be8  
} 4nmc(CHQ:  
insertSort(data,0,1); T\eOrWt/  
} >V2Tr$m j  
aze}ko NE  
/** Ms ;:+JI  
* @param data bF;g.-.2  
* @param j +!\$SOaR{  
* @param i R3`!Xj#&M  
*/ ne4j_!V{Mf  
private void insertSort(int[] data, int start, int inc) { 2%y}El^+_  
int temp; EtjN :p|$  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); _Qs=v0B//  
} l~kxt2&  
} f7c%Z:C#Y  
} .uG|Vq1v  
494"-F6  
} 7E*d>:5I  
ujGvrY j  
快速排序: `rzgC \  
:@a8>i1&  
package org.rut.util.algorithm.support; GD<xmuo  
&k*sxW'  
import org.rut.util.algorithm.SortUtil; qn}4PVn4  
"a %5on  
/** k\8]fh)J\7  
* @author treeroot ln-+=jk  
* @since 2006-2-2 vY&[=2=  
* @version 1.0 78&jaw*1A  
*/ }SIUsh'  
public class QuickSort implements SortUtil.Sort{ h W\q  
8XZS BR(Z  
/* (non-Javadoc) PzbLbH8A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M@ILB-H  
*/  pbM~T(Y8  
public void sort(int[] data) { 1|_jV7`Mz  
quickSort(data,0,data.length-1); jHBzZ!<  
} r8x<- u4  
private void quickSort(int[] data,int i,int j){ x?v/|  
int pivotIndex=(i+j)/2; :_E=&4&g  
file://swap =:OS"qD3l  
SortUtil.swap(data,pivotIndex,j); s 4uZ;  
V +j58Wuf  
int k=partition(data,i-1,j,data[j]); s{\USD6  
SortUtil.swap(data,k,j); oh c/{D2  
if((k-i)>1) quickSort(data,i,k-1); 4n_f7'GZg  
if((j-k)>1) quickSort(data,k+1,j); mcvd/  
D=uU:7m  
} EUZ#o\6  
/** {WfZE&B  
* @param data f}Mx\dc  
* @param i ?*lpu  
* @param j mxUM&`[  
* @return Khp`KPxz%  
*/ .21[3.bp/q  
private int partition(int[] data, int l, int r,int pivot) { u hW @ Y+  
do{ %s<7 M@]f  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); b3]QH h/  
SortUtil.swap(data,l,r); OIP JN8V  
} ]w ^9qS  
while(l SortUtil.swap(data,l,r); 8D7 = ]  
return l; ',`GdfAsH  
} Q'xZ\t  
EF1aw2  
} AG/?LPJ  
OE_;i}58  
改进后的快速排序: |t](4  
/sVy"48-  
package org.rut.util.algorithm.support; !jZXh1g%  
B=?4; l7  
import org.rut.util.algorithm.SortUtil; E{+V_.tlu  
80=6B  
/** (ns> z7  
* @author treeroot }Fy~DsQ  
* @since 2006-2-2 |]FJfMX  
* @version 1.0 X.TsOoy  
*/ N0TEVDsk  
public class ImprovedQuickSort implements SortUtil.Sort { 9,8}4Y=GVI  
92zo+bc  
private static int MAX_STACK_SIZE=4096; $}kT )+K  
private static int THRESHOLD=10; Z#w@ /!"}T  
/* (non-Javadoc) 0G@sj7)]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h2M>4c  
*/ zq\YZ:JC  
public void sort(int[] data) { 7&-i :2  
int[] stack=new int[MAX_STACK_SIZE]; Ps=OL\i  
B"sQ\gb%Q  
int top=-1; 7\ELr 5  
int pivot; mhTi{t_fHM  
int pivotIndex,l,r; .[YM0dt  
rZ}y'A   
stack[++top]=0; (`%$Aa9J  
stack[++top]=data.length-1; c!#DD;<Q  
Wc] L43u  
while(top>0){ lxsBXXZg  
int j=stack[top--]; Wl!|+-  
int i=stack[top--]; ;#c=0*.  
'Bul_D4B  
pivotIndex=(i+j)/2; Dxj&9Ra  
pivot=data[pivotIndex]; ]!l]^/ .  
Y*oT (  
SortUtil.swap(data,pivotIndex,j); H$GJpXIb  
-U'3kaX5<  
file://partition 9cV;W\ Tw  
l=i-1; W!.F\H,(  
r=j; cO}`PD$i  
do{ gzdR|IBa  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ig:E` Fe@  
SortUtil.swap(data,l,r); HHd;<%q  
} !I3_KuJ5  
while(l SortUtil.swap(data,l,r); <<a1a  
SortUtil.swap(data,l,j); rmVF88/;  
ks{y=@ <,  
if((l-i)>THRESHOLD){ gKyYBr  
stack[++top]=i; .7lDJ2  
stack[++top]=l-1; rDr3)*H?0  
} H\W/;Nn  
if((j-l)>THRESHOLD){ 9UF^h{X  
stack[++top]=l+1; yMz%s=rh  
stack[++top]=j;  ! n@*6  
} 0|mF /  
3eOwy~  
} UvwO/A\Gv  
file://new InsertSort().sort(data); Hrz #So\#  
insertSort(data); /"$A?}V  
} + Xc s<+b  
/** II=(>G9v  
* @param data 9RzTC  
*/ fcDiYJC*  
private void insertSort(int[] data) { j A/xe  
int temp; (A@~]N ,U/  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Z+# =]Kw)  
} Na6z1&wS  
} o u%Xnk~  
} Q[5j5vry  
%5) 1^  
} ;S,k U{F  
{& Pk$Q!  
归并排序: xV]eEOiLM  
g>g]qQ  
package org.rut.util.algorithm.support; ~96fyk|  
k(<:  
import org.rut.util.algorithm.SortUtil; '!$g<= @  
d46PAA{'  
/** Ab| t E5%  
* @author treeroot bf#@YkE  
* @since 2006-2-2 "Q{)H8,E)x  
* @version 1.0 {\HEUIa]w  
*/ ?\_\pa/+  
public class MergeSort implements SortUtil.Sort{ d#Hl3]wT  
Nd5G-eYI  
/* (non-Javadoc) rUg<(/c  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ! };OL Q  
*/ @jXdQY%{  
public void sort(int[] data) { pi/Jto25z  
int[] temp=new int[data.length]; 960[.99  
mergeSort(data,temp,0,data.length-1); ar+ j`QIe  
} rt5FecX\  
ape \zZCV  
private void mergeSort(int[] data,int[] temp,int l,int r){ qM~;Q6{v  
int mid=(l+r)/2; `>.^/SGu>?  
if(l==r) return ; b#h}g>l  
mergeSort(data,temp,l,mid); ~Bw)rf,  
mergeSort(data,temp,mid+1,r); Rv-`6eyAA  
for(int i=l;i<=r;i++){ O/Q7{5n  
temp=data; wNNInS6  
} Q~p)@[q  
int i1=l; 7FQ&LF46  
int i2=mid+1; G[;GP0\N  
for(int cur=l;cur<=r;cur++){ A>C&`A=-  
if(i1==mid+1) _zuaImJ0o  
data[cur]=temp[i2++]; `a$c6^a  
else if(i2>r) HUP~  
data[cur]=temp[i1++]; H%`$@U>  
else if(temp[i1] data[cur]=temp[i1++]; ef !@|2  
else SVJL|S 3k  
data[cur]=temp[i2++]; O %x<  
} > T$M0&<  
} ^( w%m#  
5uo?KSX%  
} u ZzO$e  
H K]-QTEn  
改进后的归并排序: pJnT \~o  
NU]+ {7  
package org.rut.util.algorithm.support; "L?h@8sa  
o7_*#5rD  
import org.rut.util.algorithm.SortUtil; @ )bCh(u  
D90.z"N\i9  
/** {c(@u6l28  
* @author treeroot  BVJ6U[h`  
* @since 2006-2-2 5mtsN#  
* @version 1.0 D7X8yv1  
*/ &3@ {?K  
public class ImprovedMergeSort implements SortUtil.Sort { IdHyd Y1  
%a'Nf/9=:  
private static final int THRESHOLD = 10; <`PW4zSI  
Za"m;+H<E  
/* !Dc|g~km\  
* (non-Javadoc) V:YN!  
* ~!t#M2Sk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E~4d6~s  
*/ RWX?B  
public void sort(int[] data) { 3Ygt!  
int[] temp=new int[data.length]; \/wbk`2  
mergeSort(data,temp,0,data.length-1); sxP1. = W  
} vO?\u`vY  
>+/2g  
private void mergeSort(int[] data, int[] temp, int l, int r) { <~d3L4h*<  
int i, j, k; B IW?/^  
int mid = (l + r) / 2;  Zk={3Y  
if (l == r) ekR/X  
return; tPQjjoh  
if ((mid - l) >= THRESHOLD) o(gEyK  
mergeSort(data, temp, l, mid); \ #yKCA';  
else =x &"aF1  
insertSort(data, l, mid - l + 1); {E 'go]  
if ((r - mid) > THRESHOLD) hOOkf mOM  
mergeSort(data, temp, mid + 1, r); \me'B {aa  
else y;GwMi $KI  
insertSort(data, mid + 1, r - mid); g,k} nkIT  
rDD,eNjG  
for (i = l; i <= mid; i++) { }ldOxJSB?  
temp = data; ;2&ym)`  
} :l;SG=scx  
for (j = 1; j <= r - mid; j++) { w3<%wN>tE  
temp[r - j + 1] = data[j + mid]; 0gIJ&h6*f  
} ?q*,,+'0  
int a = temp[l]; r;7&U<j~Z  
int b = temp[r]; ]ChGi[B~9  
for (i = l, j = r, k = l; k <= r; k++) { ]%Db%A  
if (a < b) { :`Z'vRj  
data[k] = temp[i++]; m9Pzy^g1  
a = temp; ='[J.  
} else { \nzaF4+$  
data[k] = temp[j--]; C"gH>G  
b = temp[j]; gP 13n!7  
} 3g{T+c*  
} ;^"#3_7T]  
} SjmWlf,  
ozCH1V{p  
/** cns~)j~  
* @param data 5McOSy  
* @param l U65a _dakk  
* @param i SK]"JSY`  
*/ ]lgI Q;r  
private void insertSort(int[] data, int start, int len) { W3gBLotdg  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Vlf=gP  
} us,~<e0  
} |eu:qn8  
} *a[iq`499  
} 8q"C=t7  
(Qp53g  
堆排序: (c\i.z  
&OXWD]5$6  
package org.rut.util.algorithm.support; G@(ukt`0}  
!A|ayYBb\  
import org.rut.util.algorithm.SortUtil;  %&81xAt  
4e!>A  
/** M3EB=tU  
* @author treeroot l`b%imX  
* @since 2006-2-2 &UextGk7  
* @version 1.0 ^}{`bw{  
*/ ]nQC  
public class HeapSort implements SortUtil.Sort{ DxvD 1u   
wRCv?D`vV  
/* (non-Javadoc) M~O$ ,dof  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +8zC ol?j  
*/ BXx l-x  
public void sort(int[] data) { P-LdzVt(^  
MaxHeap h=new MaxHeap(); )zMsKfQ  
h.init(data); cg| C S?  
for(int i=0;i h.remove(); D&]dlY@*  
System.arraycopy(h.queue,1,data,0,data.length);  F<Y>  
} WWtksi,  
([Da*Tk*  
private static class MaxHeap{ h4,S /n  
CY?19Ak-xd  
void init(int[] data){ :&-j{8p-  
this.queue=new int[data.length+1]; p(6!7t:  
for(int i=0;i queue[++size]=data; An2Wj  
fixUp(size); 6?uo6 I  
} lD]/Kx  
} *D:"I!Ho  
&`}8Jz=S  
private int size=0; T/YvCbo  
IPxK$nI^  
private int[] queue; \*r]v;NcP  
Y5XhV;16  
public int get() { nu!tk$Q  
return queue[1]; G@+AB*Eu  
} Lk8NjK6  
YYi:d=0<SO  
public void remove() { mcm8|@Y{  
SortUtil.swap(queue,1,size--); us2RW<Oxv  
fixDown(1); AfqthI$*m  
} R;3Tyn+  
file://fixdown ,nnVHBN  
private void fixDown(int k) { ;z3w#fNMv  
int j; tEC`-> |  
while ((j = k << 1) <= size) { ]*\m@lWu  
if (j < size %26amp;%26amp; queue[j] j++; p J#<e  
if (queue[k]>queue[j]) file://不用交换 3A)Ec/;~  
break; ]R7zvcu&  
SortUtil.swap(queue,j,k); t9Y?0O}/  
k = j; >SSRwYIN  
} OO  /Pc  
} kA/V=xO<  
private void fixUp(int k) { \66j4?H#  
while (k > 1) { 0<4Sw j3s7  
int j = k >> 1; m! H7;S-(  
if (queue[j]>queue[k]) l99{eD  
break; p(`?y:.3  
SortUtil.swap(queue,j,k); 2[e^mm&.   
k = j; ge@KopZ&  
} kE*OjywN  
} "U6:z M  
pU)g93  
} qR>"r"Fq  
D8r=V f  
} ??g`c=R!V  
18{" @<wIs  
SortUtil: -< RG'I~  
S mjg[  
package org.rut.util.algorithm; 48t_?2>  
=j$!N# L  
import org.rut.util.algorithm.support.BubbleSort; %Tvy|L ,  
import org.rut.util.algorithm.support.HeapSort;  ET:B"  
import org.rut.util.algorithm.support.ImprovedMergeSort; !ZC0n`  
import org.rut.util.algorithm.support.ImprovedQuickSort; t w?\bB  
import org.rut.util.algorithm.support.InsertSort; ")?NCun>  
import org.rut.util.algorithm.support.MergeSort; A"W}l)+X  
import org.rut.util.algorithm.support.QuickSort; gZ&' J\  
import org.rut.util.algorithm.support.SelectionSort; C?47v4n-'  
import org.rut.util.algorithm.support.ShellSort; 0{'%j~"  
X GhV? tA  
/** I6B4S"Q5<  
* @author treeroot Rb=8(#  
* @since 2006-2-2 hq[RU&\  
* @version 1.0 >~)IsQ*%  
*/ \8HLQly|@  
public class SortUtil { 'V-_3WWxU  
public final static int INSERT = 1; 7Ew.6!s#n1  
public final static int BUBBLE = 2; x O gUX6n  
public final static int SELECTION = 3; @c{rqa v  
public final static int SHELL = 4; V/@?KC0B5  
public final static int QUICK = 5; ,U?W  
public final static int IMPROVED_QUICK = 6; 6~b]RZe7  
public final static int MERGE = 7; cV+ x.)a.  
public final static int IMPROVED_MERGE = 8; 0A. PfqYi  
public final static int HEAP = 9; WymBjDos:  
YnLwBJ2i  
public static void sort(int[] data) { L^Q q[>  
sort(data, IMPROVED_QUICK); rh%-va9  
} XDM~H  
private static String[] name={ '<v_YxEn  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" !/|^ )d^U  
}; `kERM-@A  
xw5LPz;B  
private static Sort[] impl=new Sort[]{ M!nwcxB!  
new InsertSort(), Z.v2 !u  
new BubbleSort(), Ag#o&Y  
new SelectionSort(), MV.$Ay  
new ShellSort(), }?vVJm'  
new QuickSort(), 0*-nVC1  
new ImprovedQuickSort(), RxZ#`$F  
new MergeSort(), ))z1T8  
new ImprovedMergeSort(), $hM>%u  
new HeapSort() ~~D =Z#  
}; u>U4w68  
\XI9 +::%  
public static String toString(int algorithm){ 057$b!A-a  
return name[algorithm-1]; h~zG*B5F  
} |m5 E%E  
4X^{aIlshk  
public static void sort(int[] data, int algorithm) { _#mo6')j  
impl[algorithm-1].sort(data); v7kR]HU[y  
} sKLH.@  
S7 _^E  
public static interface Sort { 2*<'=*zaQ  
public void sort(int[] data); 5f'<0D;K  
} 3jG #<4;J  
yk<$XNc  
public static void swap(int[] data, int i, int j) { @T6Z3Zj}  
int temp = data; jj&4Sv#>  
data = data[j]; |>2IgTh1a  
data[j] = temp; eJm7}\/6`  
} buv*qPO  
} ^twJNm{99  
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