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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。 .@x.    
插入排序: < e3] pM  
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package org.rut.util.algorithm.support; CnuM=S:  
0Gj/yra9MO  
import org.rut.util.algorithm.SortUtil; a1_ N~4r`  
/** N5l`Rq^K  
* @author treeroot \4qF3#  
* @since 2006-2-2 rmBzLZ}  
* @version 1.0 =W2.Nc  
*/ #IGcQY  
public class InsertSort implements SortUtil.Sort{ M &-p  
G8]{pbX  
/* (non-Javadoc) q2|x$5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t ^>07#z  
*/ u gRyUny  
public void sort(int[] data) { >"UXY)  
int temp; -N/n|{+F  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); wx-&(f   
} +)h# !/  
} \_u{ EB'b  
} rhzI*nwOT  
B t3++ Mj  
} JK,^:tgm  
IM6n\EZ^  
冒泡排序: f4\F:YT  
1c/<2xO~  
package org.rut.util.algorithm.support; i.^UkN{  
[qxpu{  
import org.rut.util.algorithm.SortUtil; GZ<@#~1%\  
p-"wY?q  
/** >9XG+f66E  
* @author treeroot C% z9Q  
* @since 2006-2-2 qm#?DSLap  
* @version 1.0 Y,mo}X<>  
*/ .z$UNB(!M  
public class BubbleSort implements SortUtil.Sort{ p\I3fI0i  
U(+QrC:  
/* (non-Javadoc) _ \+0e:Ae  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?mV2|;  
*/ OWfB8*4@  
public void sort(int[] data) { 9*JxP%8T~X  
int temp; fFC9:9<  
for(int i=0;i for(int j=data.length-1;j>i;j--){ \3(s&K\Y6\  
if(data[j] SortUtil.swap(data,j,j-1); V@LBy1z  
} 08@4u L  
} L4+R8ojG  
} 3#""`]9H  
} `6Q+N=k~Z  
aA*h*  
} 0n X5Vo  
e7iQG@i7  
选择排序: ?N+pWdi  
_ZWU~38PM  
package org.rut.util.algorithm.support; 6V9r[,n  
X`Lv}6}xT  
import org.rut.util.algorithm.SortUtil; 4`5W] J]6  
ZHwN3  
/** |]:6IuslJ  
* @author treeroot q 7W7sw  
* @since 2006-2-2 mGwJ>'+d  
* @version 1.0 `nII@ !  
*/ K\RMX?YsP  
public class SelectionSort implements SortUtil.Sort { }#g &l*P  
# mM9^LJ   
/* l YdATM(h  
* (non-Javadoc) 8% ; .H-  
* Ozulp(8*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B\|^$z2  
*/ ]LCL?zAzH!  
public void sort(int[] data) { .1h\r, #  
int temp; 4 y.' O  
for (int i = 0; i < data.length; i++) { MjBI1|*  
int lowIndex = i; Vl(id_~_  
for (int j = data.length - 1; j > i; j--) { 6 P9#6mZ  
if (data[j] < data[lowIndex]) { [$>@f{:  
lowIndex = j; ,DW q  
} \/wk!mWV@  
} BD.l5 ~:  
SortUtil.swap(data,i,lowIndex); BB/c5?V  
} LEg|R+ 6E  
} &RS)U72  
^}gZ+!kA  
} :1UOT'_  
55y}t%5  
Shell排序: $Zi {1w  
>Ir?)h  
package org.rut.util.algorithm.support; 4;jAdWj3  
+U1fa9NSn  
import org.rut.util.algorithm.SortUtil; t=fAG,k5  
/lHs]) ,  
/** <g&GIFE,  
* @author treeroot Nb0T3\3W  
* @since 2006-2-2 RY,L'Gt O  
* @version 1.0 FD8  
*/ PJKxh%J  
public class ShellSort implements SortUtil.Sort{ tOj5b 7'ui  
m,4'@jg0  
/* (non-Javadoc) uW(Ngcpr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L]X Lv9J0  
*/ ][\ uH|  
public void sort(int[] data) { Nhjz~S<o  
for(int i=data.length/2;i>2;i/=2){ 1 j|XC  
for(int j=0;j insertSort(data,j,i); 4&L,QSJ V  
} *rm[\  
} ]3U|K .G  
insertSort(data,0,1); /HSg)  
} aO:A pOAO  
xy)W_~Mk  
/** +miL naO~L  
* @param data '7]9q#{su  
* @param j 5"x1Pln  
* @param i obX2/   
*/ ZE/Aj/7Qy  
private void insertSort(int[] data, int start, int inc) { Ox aS<vQ3  
int temp; ?a?] LIE8  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 0KZsWlD:L  
} s BuXw a  
} NUi&x+  
} .p~.S&)  
7pH[_]1"  
} A~a7/N6s;  
<Lle1=qQ  
快速排序: @a]`C $ 6  
"+&@iL  
package org.rut.util.algorithm.support; M7gqoJM'Q  
m}m|(;T  
import org.rut.util.algorithm.SortUtil; @<S'f<>g  
%CrpUx  
/** 61b<6 r0o  
* @author treeroot ?I.bC   
* @since 2006-2-2 57N<OQWf  
* @version 1.0 @<1T&X{Z!  
*/ gi/W3q3c6  
public class QuickSort implements SortUtil.Sort{ 5)4?i p  
8?o{{ay  
/* (non-Javadoc) i,y{*xBT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w (,x{Bg\  
*/ *ul-D42!U  
public void sort(int[] data) { Pv$O=N6-  
quickSort(data,0,data.length-1); ?l 0WuU  
} Nu; 9  
private void quickSort(int[] data,int i,int j){ cl'qw##  
int pivotIndex=(i+j)/2; erV&N,cI  
file://swap z)FGbX  
SortUtil.swap(data,pivotIndex,j); 7YU}-gi  
Eo{js?1G_  
int k=partition(data,i-1,j,data[j]); 1i|5ii*vc  
SortUtil.swap(data,k,j); U&gl$/4U@  
if((k-i)>1) quickSort(data,i,k-1); a3_pF~Qx  
if((j-k)>1) quickSort(data,k+1,j); {'zs4)vw  
pmDFmES  
} o PA m*  
/** }Do$oyAV$G  
* @param data V#-8[G6Ra  
* @param i E-#}.}i5  
* @param j qEPC]es|T  
* @return LkJ-M=y  
*/ U$IB_a2  
private int partition(int[] data, int l, int r,int pivot) { i~*#z&4A+  
do{ #|}EPD9$  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); PkdL] !:  
SortUtil.swap(data,l,r); Kx,<-]4  
} ,NU`aG-  
while(l SortUtil.swap(data,l,r); *i7|~q/u  
return l; MJ@PAwv"  
} rge/qUr/^  
/3 ;t &]  
} SDW!9jm>R  
vQ DlS1L  
改进后的快速排序: eq36mIo  
cfW;gFf  
package org.rut.util.algorithm.support; k`,>52  
^{+_PWn  
import org.rut.util.algorithm.SortUtil; ?w"zW6U  
k Rp$[^ma  
/** }$'T=ay&  
* @author treeroot 6.QzT(  
* @since 2006-2-2 .u9,w  
* @version 1.0 09HqiROw  
*/ !JwR[X\f  
public class ImprovedQuickSort implements SortUtil.Sort { k!wEPi]  
~@VyJT%  
private static int MAX_STACK_SIZE=4096; 140_WV?7  
private static int THRESHOLD=10; ygTc Y  
/* (non-Javadoc) m3Rss~l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D3;#:  
*/ DqBiBH[%h  
public void sort(int[] data) { mp>Ne6\Tu  
int[] stack=new int[MAX_STACK_SIZE]; CF@j]I@{   
8}!WJ2[R  
int top=-1; hdH}4W  
int pivot; /.[78:G\,  
int pivotIndex,l,r; n]P,5  
b(:U]>J  
stack[++top]=0; WQYw@M~4Q!  
stack[++top]=data.length-1; fnU;DS] W  
#uH%J<U  
while(top>0){ (wZ/I(4  
int j=stack[top--]; 4#w Z#}  
int i=stack[top--]; T [2l32  
- |&&lxrwh  
pivotIndex=(i+j)/2; hxuc4C\J  
pivot=data[pivotIndex]; MJI`1*(  
:0j_I\L  
SortUtil.swap(data,pivotIndex,j); xEqr3(  
:PDyc(s{  
file://partition xU;;@9X  
l=i-1; IpI|G!Y,  
r=j; qv$m5CJvK  
do{ ]F*fQ Ncjy  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 6{TUs>~  
SortUtil.swap(data,l,r); 9g`o+U{  
} [I5}q&  
while(l SortUtil.swap(data,l,r); 5Ls ][l7  
SortUtil.swap(data,l,j); UrEfFtH'  
rl](0"Y0 t  
if((l-i)>THRESHOLD){ 6Y&`mgMF'  
stack[++top]=i; P jh3=Dr  
stack[++top]=l-1; 5Z*6,P0  
} % (x9~"  
if((j-l)>THRESHOLD){ YS+|n%?  
stack[++top]=l+1; yk&PJ;%O<  
stack[++top]=j; ppK`7J>Z  
} v<t r1cUT  
jkfc=O6^  
} RD0=\!w*5  
file://new InsertSort().sort(data); 8(""ui 8  
insertSort(data); f#b;s<G  
} )TzQ8YpO}  
/** 6 ly`lu9  
* @param data R&]#@PW^  
*/ w j<fi  
private void insertSort(int[] data) { w>h\643  
int temp; cCbZ*  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); g.T:72"  
} swLrp 74  
} #8qhl  
} U/9_:  
\*5${[  
} T43Jgk,  
6_kv~`"tZ  
归并排序: nb}rfd.  
0;2"X [e  
package org.rut.util.algorithm.support; Y2Y)|<FH  
2*ByVK  
import org.rut.util.algorithm.SortUtil; HGlQZwf  
~l"]J'jF"H  
/** }*s`R;B|,  
* @author treeroot ![9um sx  
* @since 2006-2-2 Eohv P[i  
* @version 1.0 CWw#0  
*/ r: M>/Z/  
public class MergeSort implements SortUtil.Sort{ u@pimRVo  
g}n-H4LI  
/* (non-Javadoc) AS'%Md&I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aGq1 YOD[$  
*/ *Sp_s_tS  
public void sort(int[] data) { kqQT^6S   
int[] temp=new int[data.length]; T1=T  
mergeSort(data,temp,0,data.length-1); ?Es(pwJB  
} YML]pNB  
a(oa?OdJ  
private void mergeSort(int[] data,int[] temp,int l,int r){ u4vyj#V  
int mid=(l+r)/2; 1V:I }~\  
if(l==r) return ; G[$g-NU+  
mergeSort(data,temp,l,mid); !N'HL-oT  
mergeSort(data,temp,mid+1,r); |Q?^Ba  
for(int i=l;i<=r;i++){ xTg=oq  
temp=data; h1 pEC  
} iR]K!j2  
int i1=l; dpSNh1  
int i2=mid+1; }WDzzjDR+  
for(int cur=l;cur<=r;cur++){  x>$e*  
if(i1==mid+1) ]+A%3 7  
data[cur]=temp[i2++]; 7-#   
else if(i2>r) +FJ+,|i  
data[cur]=temp[i1++]; R,dbq4xkl  
else if(temp[i1] data[cur]=temp[i1++]; 9wbj}tN\z  
else fs\A(]`$  
data[cur]=temp[i2++]; dTZ$92<  
} c8 Je&y8  
} aI;-NnC  
^xm%~   
} dJ>~  
7!U^?0?/  
改进后的归并排序: `i<omZ[aT  
y ~n1S~5cI  
package org.rut.util.algorithm.support; g+A>Bl3#  
O+OUcMa,  
import org.rut.util.algorithm.SortUtil; J"~!jrzBh(  
LY;Fjb yU  
/** ZXl_cq2r  
* @author treeroot Hg5 :>?Lw@  
* @since 2006-2-2 ]Bj2;<@y  
* @version 1.0 LS]0p#  
*/ E.N  
public class ImprovedMergeSort implements SortUtil.Sort { $Da?)Hz'F  
y #zO1Nig`  
private static final int THRESHOLD = 10; L Iz<fB  
7>lM^ :A  
/* .F},Z[a&  
* (non-Javadoc) [h63*&  
* Z7XFG&@6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gVNoC-n)  
*/ F.),|t$\  
public void sort(int[] data) { ;2P  
int[] temp=new int[data.length]; }`.d4mm  
mergeSort(data,temp,0,data.length-1); &EmG\vfE  
} gCq'#G\Z  
U0Uy C  
private void mergeSort(int[] data, int[] temp, int l, int r) { V]NCFG  
int i, j, k; ^B:;uyG]M  
int mid = (l + r) / 2; VwOcWKD  
if (l == r) s  }Ql9  
return; YD;G+"n?T  
if ((mid - l) >= THRESHOLD) \@[,UZ  
mergeSort(data, temp, l, mid); BU#3fPl  
else RdBIbm  
insertSort(data, l, mid - l + 1); 9l(T>B2a  
if ((r - mid) > THRESHOLD) 6H=gura&   
mergeSort(data, temp, mid + 1, r); 0X3yfrim  
else UmR4zGM}  
insertSort(data, mid + 1, r - mid); 2Qt!JXC  
~7an j.  
for (i = l; i <= mid; i++) { >x>/}`  
temp = data; 9dm oB_G  
} 1YK(oRSDn  
for (j = 1; j <= r - mid; j++) { $,P:B%]  
temp[r - j + 1] = data[j + mid]; J$5Vjh'aM  
} =f!clhO  
int a = temp[l]; YjH~8==  
int b = temp[r]; >, [@SF%  
for (i = l, j = r, k = l; k <= r; k++) { ,l Y4WO  
if (a < b) { Xv3pKf-K  
data[k] = temp[i++];  TJ1h[  
a = temp; Wy%FF\D.Y  
} else { >n^780S|  
data[k] = temp[j--]; T*nP-b  
b = temp[j]; zz /4 ()u  
} 3)yL#hXg)  
} vA}_x7}n(  
} l0C`teO  
SL-;h#-y 4  
/** PD&gC88  
* @param data hHHQmK<r  
* @param l axpZ`BUc  
* @param i 9:P]{}  
*/ wZs 2 aa  
private void insertSort(int[] data, int start, int len) { qV6WT&)T  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); uFha N\S  
} [dAQrou6P  
} QFMA y>Gdn  
} =3 Vug2*wd  
} YZ`SF"Bd(  
tj$[szo  
堆排序: :AS`1\ C  
K8R>O *~  
package org.rut.util.algorithm.support; -Caj>K  
JQ 6M,O  
import org.rut.util.algorithm.SortUtil; hGkJ$QT  
kRc+OsY9  
/** 5VJe6i9;  
* @author treeroot =J4|"z:  
* @since 2006-2-2 1X&.po  
* @version 1.0 BM`6<Z"3q  
*/ lLDZ#'&An  
public class HeapSort implements SortUtil.Sort{ ] |nW  
R3;%eyu  
/* (non-Javadoc) lPI~5N8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 15hqoo9!  
*/ Fj(GyPFG  
public void sort(int[] data) { /0 4US5En  
MaxHeap h=new MaxHeap(); X\/M(byn  
h.init(data); FF~r&h8H  
for(int i=0;i h.remove(); eIfQ TV  
System.arraycopy(h.queue,1,data,0,data.length); ~`C _B]3|  
} O`Gq7=X  
vaGF(hfTA  
private static class MaxHeap{ N@L{9ak1  
e"52'zAV-  
void init(int[] data){ ~7U~   
this.queue=new int[data.length+1]; r4fHD~#l{  
for(int i=0;i queue[++size]=data; c(e>Rmh  
fixUp(size); >W;NMcN~  
} a5GLbanF  
} # )y/aA  
[ r8 ZAS  
private int size=0; U!`iKy-  
)+hV+rM jp  
private int[] queue; Yu>DgMW  
{*AA]z? zo  
public int get() { 7oW Mjw\  
return queue[1]; Hddc-7s  
} kQ}n~Hn  
94?WL  
public void remove() { c%J6!\  
SortUtil.swap(queue,1,size--); JD~;.3$/k  
fixDown(1); ,_fz)@)  
} 4a "Fu<q  
file://fixdown u }gavG l  
private void fixDown(int k) { AoeRoqg&#  
int j; 3_~iq>l  
while ((j = k << 1) <= size) { > :IWRc2  
if (j < size %26amp;%26amp; queue[j] j++; NOuG#P  
if (queue[k]>queue[j]) file://不用交换  D**GC  
break;  7P7OTN  
SortUtil.swap(queue,j,k); &J*M  
k = j; 1XMR7liE  
} ^Aq0<  
} G$+v |z  
private void fixUp(int k) { $KO2+^%y  
while (k > 1) { uI)twry]@  
int j = k >> 1; RI0^#S_{  
if (queue[j]>queue[k]) B-R#?Xn:!I  
break; sa(.Anmlj  
SortUtil.swap(queue,j,k); `;E/\eG"  
k = j; ( %\7dxiK  
} $+!dP{   
} ba);f[>  
2t-w0~O  
} n%s%i-[5B  
\A"o[A2v  
} by X!,  
%,kP_[!>Q  
SortUtil:  :^.wjUI  
hPDKxYD]f  
package org.rut.util.algorithm; `t&{^ a&Y"  
"y,YC M`  
import org.rut.util.algorithm.support.BubbleSort; Xq*^6*E-}  
import org.rut.util.algorithm.support.HeapSort; 6'r8.~O  
import org.rut.util.algorithm.support.ImprovedMergeSort; $'4 98%K2  
import org.rut.util.algorithm.support.ImprovedQuickSort; t'v t'[~,U  
import org.rut.util.algorithm.support.InsertSort; 0jf6 z-4  
import org.rut.util.algorithm.support.MergeSort; \ ;npdFy  
import org.rut.util.algorithm.support.QuickSort; ,vJt!}}  
import org.rut.util.algorithm.support.SelectionSort; HYmC3  
import org.rut.util.algorithm.support.ShellSort; tcuwGs>_  
U]iI8c  
/** QO/0VB42  
* @author treeroot 50W+!'  
* @since 2006-2-2 ["Ltqgx  
* @version 1.0 2T~cOH;T  
*/  ?pTX4a&>  
public class SortUtil { D(#f`Fj;  
public final static int INSERT = 1; G@[8P?M=Z  
public final static int BUBBLE = 2;  5&&4-  
public final static int SELECTION = 3; 2J ZR"P  
public final static int SHELL = 4; &X$T "Dp  
public final static int QUICK = 5; lW&(dn)}  
public final static int IMPROVED_QUICK = 6; ~2w&+@dV%  
public final static int MERGE = 7; <W80AJ  
public final static int IMPROVED_MERGE = 8; pk/#RUfT+  
public final static int HEAP = 9; H\67Pd(Z6  
Az`Aa0h]7  
public static void sort(int[] data) { <(L@@.87R  
sort(data, IMPROVED_QUICK); Y%s:oHt  
} 1iy$n  
private static String[] name={ F4EAC|Y  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" I,j4 BU4  
}; Tlsh[@Q  
 `Y#At3{  
private static Sort[] impl=new Sort[]{ 5Q?Jm~H9  
new InsertSort(), $KiCs]I+  
new BubbleSort(), Oj5UG*  
new SelectionSort(), &O&HczO  
new ShellSort(), 0 &zp  
new QuickSort(), Ts5)r(  
new ImprovedQuickSort(), \G" S7  
new MergeSort(), M&Ka ^h;N  
new ImprovedMergeSort(), =ejj@c  
new HeapSort() 8M,*w6P  
}; eqo0{e  
Ps!MpdcL3  
public static String toString(int algorithm){ ;c(a)_1  
return name[algorithm-1]; |*&l?S  
} 9y7N}T6  
Zd*$^P,|  
public static void sort(int[] data, int algorithm) { };/QK*  
impl[algorithm-1].sort(data);  zUfq.   
} /`*{57/3  
=}^NyLE?  
public static interface Sort { ,XD" p1(|G  
public void sort(int[] data); Jl Do_}  
} > ;,S||  
-/yqiC-yx  
public static void swap(int[] data, int i, int j) { %tCv-aX4  
int temp = data; RgJ@J/p"  
data = data[j]; Ys"wG B>  
data[j] = temp; /{i~CGc ;"  
} _4ag-'5  
} 6>>; fy2  
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