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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。 _^!vCa7f  
插入排序: lu\o`m5wF  
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package org.rut.util.algorithm.support; 4SVW/Zl.?  
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import org.rut.util.algorithm.SortUtil; Cnh|D^{s  
/** }0/a\  
* @author treeroot ? Nj)6_&  
* @since 2006-2-2 zmFws-+A  
* @version 1.0 :h5J r8  
*/ D!3{gV#  
public class InsertSort implements SortUtil.Sort{ [/9(NUf  
P'[<A Z  
/* (non-Javadoc) pO/%N94s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "ED8z|]j  
*/ !vqC+o>@  
public void sort(int[] data) {  M[P^]J@  
int temp; R,0Oq5  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 05e>\}{0  
} !k&)EWP?  
} ! q6hC  
} EA0iYzV  
kn  Hv?#  
} Z6s5M{mE  
HtBF=Boq  
冒泡排序: &^QPkX@p  
z1j|E :  
package org.rut.util.algorithm.support; y?:dE.5p|  
@6MAX"  
import org.rut.util.algorithm.SortUtil; 3)E(RyQA3  
o}D![/  
/** otriif@+Z  
* @author treeroot Da,Tav%b  
* @since 2006-2-2 mnQ'X-q3iO  
* @version 1.0 L(o#4YH}>J  
*/ :t$A8+A+0  
public class BubbleSort implements SortUtil.Sort{ JZx%J)  
[X"k> Sq  
/* (non-Javadoc) l)Mh2lA,=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W<'<'z5  
*/ $$gtZ{ukQ  
public void sort(int[] data) { 0s%6n5>  
int temp; SGf9U^ds  
for(int i=0;i for(int j=data.length-1;j>i;j--){ P;U@y" s  
if(data[j] SortUtil.swap(data,j,j-1); >4)g4~'n!  
} YKx 1NC  
} Jt=>-Spj  
} g9V.13k  
} 5' \)`  
uQp_':\k  
} n<R \w''x  
lX;mhJj!  
选择排序: eE3-t/=  
/$`;r2LG  
package org.rut.util.algorithm.support; ,U=E[X=H  
y^s1t2]%  
import org.rut.util.algorithm.SortUtil; [j0w\{  
^KH%mSX>  
/** 'p)QyL`d  
* @author treeroot {nRUH*(d9  
* @since 2006-2-2 I'A:J  
* @version 1.0 eP|)SU  
*/ ,)$Wm-  
public class SelectionSort implements SortUtil.Sort { S aNN;X0  
CA^.?&CH^O  
/* Je~p%m#e;K  
* (non-Javadoc) P(_(w 9  
* 2Ow<`[7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a<p %hY3  
*/ +Jq`$+%C  
public void sort(int[] data) { !; WbOnLP  
int temp; 1n3$V:00  
for (int i = 0; i < data.length; i++) { ~e^)q>Lb7(  
int lowIndex = i; w2Kq(^?  
for (int j = data.length - 1; j > i; j--) { lU$X4JBzS  
if (data[j] < data[lowIndex]) { ^x3EotQ\  
lowIndex = j; z93nYY$`Y  
} ;&mxqY8`'  
} 6ZgNHARS  
SortUtil.swap(data,i,lowIndex); p#<nK+6.8  
} Q \WXi  
} %UG/ak%z  
)E~mJln  
} t aV|YP$  
F@^N|;_2  
Shell排序: PP4d?+;V  
IUawdB5CB  
package org.rut.util.algorithm.support; ,.7vBt6 p  
!E0fGh  
import org.rut.util.algorithm.SortUtil; MPG+B/P&  
g RU-g  
/** gV`S%   
* @author treeroot <G9<"{  
* @since 2006-2-2 pn*d[M|k  
* @version 1.0  2}!R T  
*/ iiN?\OO^~  
public class ShellSort implements SortUtil.Sort{ sL mW\\kA>  
D;C5,rN t  
/* (non-Javadoc) $Sw,hb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T#N80BH[  
*/ Nuq(4Yf1W  
public void sort(int[] data) { zKMv7;s?  
for(int i=data.length/2;i>2;i/=2){ l#ygb|=x  
for(int j=0;j insertSort(data,j,i); !PI0oh  
} !qS05  
} +{^'i P  
insertSort(data,0,1); $w`veP  
} B3 .X}ys#  
`&,_xUA  
/** /J.0s0 @  
* @param data (zEYpTp  
* @param j |rFJ*.nD  
* @param i pLo;#e8'f  
*/ m9I(TOw  
private void insertSort(int[] data, int start, int inc) { tnJ`D4  
int temp; N.vG]%1"  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); d3(+ztmG!  
} 2{gwY85:  
} x{j+}'9  
} ++gPv}:$X  
ZR2\ dH*  
} l3\9S#3-^  
PbQE{&D#  
快速排序: I*9Gb$]=  
BiE$mM  
package org.rut.util.algorithm.support; #4lHaFq  
P;>!wU~*  
import org.rut.util.algorithm.SortUtil; 8nf4Jk8r  
\`&xprqAw  
/** kp.|gzA6  
* @author treeroot Ltl]j*yei  
* @since 2006-2-2 _rG-#BKW8L  
* @version 1.0 3U>S]#5}  
*/ wH!}qz /  
public class QuickSort implements SortUtil.Sort{ Iw*C*%}[Z  
e00RT1L  
/* (non-Javadoc) 4a1BGNI%SW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v$Dh.y  
*/ ^X$ I=ro  
public void sort(int[] data) { T 77)Np  
quickSort(data,0,data.length-1); [e1\A&T  
} g\qX7nIH?  
private void quickSort(int[] data,int i,int j){ jigbeHRy  
int pivotIndex=(i+j)/2; y]MWd#U  
file://swap [ns&Y0Y`t  
SortUtil.swap(data,pivotIndex,j); 7Z VVR*n|  
[(!Q-8  
int k=partition(data,i-1,j,data[j]); Zr5'TZ`$  
SortUtil.swap(data,k,j); O${r^6Hh  
if((k-i)>1) quickSort(data,i,k-1); PXR0Yn  
if((j-k)>1) quickSort(data,k+1,j); Y0rf9  
fo *!a$)  
} LuLy6]6D;  
/** Fz{o-4  
* @param data 2"zIR (  
* @param i 0NVG"-Q  
* @param j ]y$)%J^T  
* @return [;Vi~$p|Eo  
*/ rT o%=0P  
private int partition(int[] data, int l, int r,int pivot) { 1X Q87~  
do{ YBR)s\*  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); vsjM3=  
SortUtil.swap(data,l,r); gp%tMT I1  
} Bk@bN~B4  
while(l SortUtil.swap(data,l,r); |%n|[LP'  
return l; 3SmqXPOw  
} sek6+#|=  
h!ZZ2[  
} Qb@BV&^y&  
d"z *Nb  
改进后的快速排序: B6-AIPb  
gq=0L:  
package org.rut.util.algorithm.support; Ni&,g  
Dy98[cL  
import org.rut.util.algorithm.SortUtil; \]Kq(k[p  
}'%$7vL`Ft  
/** UnJi& ~O  
* @author treeroot Ua}g  
* @since 2006-2-2 //VG1@vaVX  
* @version 1.0 #@IQlqJfY7  
*/ %L.lkRs  
public class ImprovedQuickSort implements SortUtil.Sort { _P>1`IR  
:p,c%"8  
private static int MAX_STACK_SIZE=4096; $hC~af6  
private static int THRESHOLD=10; (q055y  
/* (non-Javadoc) k&n\ =tKN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GcPB'`!M  
*/ L!`*R)I45  
public void sort(int[] data) { mI2|0RWI)l  
int[] stack=new int[MAX_STACK_SIZE]; SB5@\^  
jY1^+y{  
int top=-1; (L]T*03#  
int pivot; (M4]#5  
int pivotIndex,l,r; R65;oJh  
)tJL@Qo  
stack[++top]=0; 77)OW $G  
stack[++top]=data.length-1; 3xc:Y> *`  
0^-z?Kb<}  
while(top>0){ mm3zQ!2j.  
int j=stack[top--]; A)=X?x  
int i=stack[top--]; @oUf}rMiDa  
Z`e$~n(Bh  
pivotIndex=(i+j)/2; AEBw#v!,o  
pivot=data[pivotIndex]; tW'qO:y+  
IO?~b XP  
SortUtil.swap(data,pivotIndex,j); [I#Q  
b=6ZdN1  
file://partition = .fc"R|<K  
l=i-1; 8f5%xY$  
r=j; 5;r({ J  
do{ `PXoJl  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); !.x=r  
SortUtil.swap(data,l,r); Y;~EcM  
} rCV$N&rK  
while(l SortUtil.swap(data,l,r); <e@I1iL37y  
SortUtil.swap(data,l,j); Ly@U\%.  
Fo--PtY`p  
if((l-i)>THRESHOLD){ ,:\zXESy4  
stack[++top]=i; RXIH(WiK  
stack[++top]=l-1; bvt-leA=  
} r>n8`W  
if((j-l)>THRESHOLD){ H J2O@e  
stack[++top]=l+1; h5h-}qBA  
stack[++top]=j; N9~'P-V  
} {FrHm  
 ."$=  
} s2,`eV  
file://new InsertSort().sort(data); Py(wT%w  
insertSort(data); sIP6GWK$  
} b@UF PE5jy  
/** Iwd"f  
* @param data x`&P}4v0  
*/ hfVzzVX:  
private void insertSort(int[] data) { J~PTVR  
int temp; 0ll,V  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); NpjsZcA  
} Br?++\  
} \H}@-*z+)  
} #CBo  
^^U)WB  
} @DjG? yLK$  
YQlpk@X`2  
归并排序: GcU(:V2o  
zXA= se0U  
package org.rut.util.algorithm.support; -0[>}!l=G  
n~L'icD[  
import org.rut.util.algorithm.SortUtil; x %!OP\  
&QHA_+88W  
/** U/~Zk@3j  
* @author treeroot [m@e^6F0U  
* @since 2006-2-2 6M2i? c  
* @version 1.0 _ ;v _L  
*/ [NR0] #h  
public class MergeSort implements SortUtil.Sort{ aG8;,H=%,  
cfF-e93T  
/* (non-Javadoc) o F,R@f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |$i1]Dr6  
*/ dRarNW  
public void sort(int[] data) { #&HarBxx  
int[] temp=new int[data.length]; )xXrs^  
mergeSort(data,temp,0,data.length-1); $txWVjR?\  
} *HfW(C$  
DXw9@b  
private void mergeSort(int[] data,int[] temp,int l,int r){ }sm56}_  
int mid=(l+r)/2; rSzXa4m(  
if(l==r) return ; c'VtRE# z~  
mergeSort(data,temp,l,mid); p5D3J[?N  
mergeSort(data,temp,mid+1,r); dh7)N}2  
for(int i=l;i<=r;i++){ $(!D/bvJ  
temp=data; Y?q*hS0!H  
} 2R~=@  
int i1=l; 5}(YMsUb  
int i2=mid+1; 9fk\Ay1P  
for(int cur=l;cur<=r;cur++){ knj,[7uh  
if(i1==mid+1) R _~m\P  
data[cur]=temp[i2++]; YQw/[  
else if(i2>r) `XRb:d^  
data[cur]=temp[i1++]; KfN`ZZ<  
else if(temp[i1] data[cur]=temp[i1++]; Yqj.z|}Nb  
else mYU dhL ^  
data[cur]=temp[i2++]; [~&:`I1  
} tue%L]hc  
} bU@>1>b6lE  
1+y6W1m^R  
} ~P.-3  
4h0jX 9  
改进后的归并排序: 88X*:Kf?:  
)QJU ]G  
package org.rut.util.algorithm.support; }][|]/s?42  
~N+/ZVo&y  
import org.rut.util.algorithm.SortUtil; p{pzOMi6  
}<x!95  
/** H;"N|pBy  
* @author treeroot #h|,GvmF<b  
* @since 2006-2-2 WG!;,~f>o  
* @version 1.0 Tef3 Z6  
*/ _S7M5{U_  
public class ImprovedMergeSort implements SortUtil.Sort { ` TVcI\W  
j,V$vKP  
private static final int THRESHOLD = 10; JCMEhI6d*  
Z~.]ZWj -  
/* E;+OD&|  
* (non-Javadoc) MsVI <+JZ  
* ?5+KHG*)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WSX@0A.&)  
*/  z]R!l%`  
public void sort(int[] data) { U Edl"FwM4  
int[] temp=new int[data.length]; !n?*vN=S  
mergeSort(data,temp,0,data.length-1); 77[;J  
} K^1O =1gY  
cbHn\m)J,  
private void mergeSort(int[] data, int[] temp, int l, int r) { PX>\j&  
int i, j, k; %A Du[M.  
int mid = (l + r) / 2; Bo\dt@0;  
if (l == r) R<YYf^y  
return; '%r@D&*vp  
if ((mid - l) >= THRESHOLD) 8 H"f9S=K  
mergeSort(data, temp, l, mid); 0aN}zUf  
else \(v_",  
insertSort(data, l, mid - l + 1); DWevg;_]$(  
if ((r - mid) > THRESHOLD) Gxt<kz  
mergeSort(data, temp, mid + 1, r); nfPl#]ef*  
else {UVm0AeUq  
insertSort(data, mid + 1, r - mid); JnKbd~  
GeW$lA I  
for (i = l; i <= mid; i++) { ^# g;"K0  
temp = data; d"$oV~>P|  
} 9tW.}5V  
for (j = 1; j <= r - mid; j++) { R)d 7b,_Yd  
temp[r - j + 1] = data[j + mid]; {w1h<;MH  
} SbNUX  
int a = temp[l]; @%B!$\]  
int b = temp[r]; sV4tu(~  
for (i = l, j = r, k = l; k <= r; k++) { 2/o/UfYjgF  
if (a < b) { W;9X*I8f8  
data[k] = temp[i++]; 'f<_SKd  
a = temp; ,f""|X5  
} else { [LEh  
data[k] = temp[j--]; kIZdN D&  
b = temp[j]; 2*;Y%NcP[  
} hx;kEJ  
} #?d#s19s  
} 0GR9C%"]  
<("w'd}  
/** s 7cyo ]  
* @param data wN0OAbtX'  
* @param l zNTu j p  
* @param i B*?PB]  
*/ >+LgJo R  
private void insertSort(int[] data, int start, int len) { wuCtg=  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); =id $  
} 3B|-xq;]I  
} cNB$g )`  
} F!cAaL1  
} +g7nM7,1a  
%Yn)t3d  
堆排序: >u[1v  
$%"}N_M  
package org.rut.util.algorithm.support;  s !vROJ  
wLp t2b8S  
import org.rut.util.algorithm.SortUtil; Tsp-]-)  
}EG(!)u  
/** p5rRhu/|k3  
* @author treeroot %YAiSSsV  
* @since 2006-2-2 \@t5S  
* @version 1.0 "$V2$  
*/ -ZON']|<}k  
public class HeapSort implements SortUtil.Sort{ a~TZ9yg+HL  
A0k>Nb\c3  
/* (non-Javadoc) g>-[-z$E3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *^5,7}9Qo  
*/ xa*gQ%+F  
public void sort(int[] data) { ^W05Z!}  
MaxHeap h=new MaxHeap(); )GKgK;=~  
h.init(data); `GWq3c5  
for(int i=0;i h.remove(); >^ar$T;Ys  
System.arraycopy(h.queue,1,data,0,data.length); R}26"+~  
} qiryC7.E  
D;n%sRq(Z  
private static class MaxHeap{ 1iW9?=a"  
>Ga1p'8FtU  
void init(int[] data){ 9>>}-;$  
this.queue=new int[data.length+1]; y5D?Bg|M  
for(int i=0;i queue[++size]=data; +E[)@;T  
fixUp(size); V-r<v1}M  
} ~,1q :Kue  
} )t=u(:u]  
WYzaD}  
private int size=0; fb;"J+  
N6 8>`  
private int[] queue; "kg$s5o  
D*Q#G/TF3  
public int get() { /8HO7E+5  
return queue[1]; ~8{3Fc0  
} bD-Em#>  
<\EfG:e  
public void remove() { GLF"`M/g  
SortUtil.swap(queue,1,size--); GK%ovK  
fixDown(1); *03/ :q^(  
} s@iCfXU  
file://fixdown *?"{T;4u~O  
private void fixDown(int k) { k|C8sSH  
int j; 5z>\'a1U  
while ((j = k << 1) <= size) { 28yxX431S  
if (j < size %26amp;%26amp; queue[j] j++; AAY UXY!  
if (queue[k]>queue[j]) file://不用交换 {\zr_v`g  
break; 9iNns;^`q  
SortUtil.swap(queue,j,k); F ;&e5G  
k = j; u.FDe2|[)  
} 3:#rFb  
} r2'rf pQ  
private void fixUp(int k) { n"Vd"}sU.  
while (k > 1) { 9X` QlJ2|  
int j = k >> 1; p00AcUTq  
if (queue[j]>queue[k]) T+D]bfjr&&  
break; <~+  
SortUtil.swap(queue,j,k); Z$XpoDbOy  
k = j; LS$82UB&  
} y]9U FL"  
} R  |%  
lHqx}n@e  
} jy2nn:1#^  
1iDo$]TEK  
} Af<>O$$6  
"6QMa,)D  
SortUtil: d]`,}vi#E9  
J,Ap9HJt  
package org.rut.util.algorithm; @E;pT3; )  
- S-1<xR  
import org.rut.util.algorithm.support.BubbleSort; j #YFwX4.  
import org.rut.util.algorithm.support.HeapSort; J@iN':l-  
import org.rut.util.algorithm.support.ImprovedMergeSort; 3Q)>gh*  
import org.rut.util.algorithm.support.ImprovedQuickSort; ;# j 82  
import org.rut.util.algorithm.support.InsertSort; ]l%.X7M9  
import org.rut.util.algorithm.support.MergeSort; qQvb;jO  
import org.rut.util.algorithm.support.QuickSort; -rlX<(pl)  
import org.rut.util.algorithm.support.SelectionSort; Fo~v.+^?  
import org.rut.util.algorithm.support.ShellSort; RkwY3 s"  
Y1\vt+`O  
/** ]SgeZ07  
* @author treeroot >6+K"J-@  
* @since 2006-2-2 8l0 (6x$  
* @version 1.0 "M &4c:cz  
*/ BB$>h-M/%#  
public class SortUtil { ,&G M\FTeb  
public final static int INSERT = 1; eov-"SJB  
public final static int BUBBLE = 2; -~fI|A^  
public final static int SELECTION = 3; ~\,6 C1M  
public final static int SHELL = 4; _6 `4_<c=  
public final static int QUICK = 5; yRkMR$5&  
public final static int IMPROVED_QUICK = 6; QGy=JHb  
public final static int MERGE = 7; Am4(WXVQ  
public final static int IMPROVED_MERGE = 8; 2,0F8=L  
public final static int HEAP = 9; (=rv `1  
UUqj?'Nv  
public static void sort(int[] data) { nDy=ZsK  
sort(data, IMPROVED_QUICK); jF9CTL<  
} YYW70k:  
private static String[] name={ aM!#  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" G - WJlu  
}; I_7EfAqg(  
It-*CD9  
private static Sort[] impl=new Sort[]{ q2vz#\A?  
new InsertSort(), fM.|#eLi  
new BubbleSort(), A!yLwkc:5  
new SelectionSort(), ze)K-6SKH  
new ShellSort(), {fD#=  
new QuickSort(), 7gcG|kKT  
new ImprovedQuickSort(), ze N!*VG  
new MergeSort(), O]eJQ4XN<  
new ImprovedMergeSort(), Mk?I}  
new HeapSort() <Q)}  
}; F-0PmO~3+W  
or`stBx  
public static String toString(int algorithm){ |'_<(z  
return name[algorithm-1]; [rU8 #4.  
} 89mre;v`  
)n@3@NV  
public static void sort(int[] data, int algorithm) { @un }&URp  
impl[algorithm-1].sort(data); 2"mj=}y6  
} Ms)zEy>[Ql  
TVwYFX  
public static interface Sort { vy2aNUmt  
public void sort(int[] data); ZQA C &:  
} 5&= n  
m28w4   
public static void swap(int[] data, int i, int j) {  ?Nql7F4  
int temp = data; FoCkTp+/  
data = data[j]; U:hC! t:  
data[j] = temp; " SqKS,J  
} Y3>\;W*?  
} # HYkzjb  
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