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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。 hFj.d]S  
插入排序: VH+^G)^)W  
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package org.rut.util.algorithm.support; noh3mi  
tNmH*"wR<  
import org.rut.util.algorithm.SortUtil; B;hc|v{(  
/** 0%`\ 8  
* @author treeroot f9&D0x?  
* @since 2006-2-2 76$19  
* @version 1.0 +J_A *B  
*/ ^7F!>!9Ca  
public class InsertSort implements SortUtil.Sort{ /Eh\07p  
p0`Wci  
/* (non-Javadoc) peR=J7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .Eh~$wm  
*/ 1Qhx$If~  
public void sort(int[] data) { ;oWhTj`  
int temp; }9<aX Y,  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); E' JVf%)  
}  @*%Q,$  
} >OZ+k(saL  
} V|#B=W  
v?fB:[dG  
}  6:ZqS~-  
_ CXKJ]m4  
冒泡排序: 1K0 9iB  
>^D"%Oj y  
package org.rut.util.algorithm.support; Ud`V"X  
UFouIS#L  
import org.rut.util.algorithm.SortUtil; 2s?j5 Sd  
dH#S69>  
/** A{y3yH`#h  
* @author treeroot P]]9Sqo7  
* @since 2006-2-2 SO]x^+[  
* @version 1.0 JNuo+Pq  
*/ <kPU*P,  
public class BubbleSort implements SortUtil.Sort{ IC92lPM }  
e0(loWq]  
/* (non-Javadoc) >F Z6\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jEit^5^5|  
*/ oel3H5Nz  
public void sort(int[] data) { i3rvD ch  
int temp; l \xIGs  
for(int i=0;i for(int j=data.length-1;j>i;j--){ b0riiF  
if(data[j] SortUtil.swap(data,j,j-1); ?u'JhZ  
} f^:9gRt  
} 1S  0GjR  
} ZKAIG=l&!  
} P ,xayy  
=QRLKo#_  
} (aiE!c  
PKwHq<vAsB  
选择排序: fHlmy[V+M  
&>i+2c~  
package org.rut.util.algorithm.support; Ga N4In[d  
[<`xAh_,  
import org.rut.util.algorithm.SortUtil; Ij@YOt  
S%mN6b~{  
/** \hv*`ukF  
* @author treeroot p?0 a"5Q  
* @since 2006-2-2 D GOc!  
* @version 1.0 7KuTC%7  
*/ '#u |RsZ  
public class SelectionSort implements SortUtil.Sort { "%qGcC8  
A}H)ojG'v  
/* N$:[`,  
* (non-Javadoc) vRRi"bo  
* 8'Z9Z*^h#x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x8b w#  
*/ c .KpXY  
public void sort(int[] data) { VSmshld  
int temp; AM'-(x|  
for (int i = 0; i < data.length; i++) { -Ww'wH'2  
int lowIndex = i; 3$(1LN  
for (int j = data.length - 1; j > i; j--) { E-.M+[   
if (data[j] < data[lowIndex]) { 'S@h._q  
lowIndex = j; S7E:&E&  
} t+q:8HNh  
} tA}O'x  
SortUtil.swap(data,i,lowIndex); W O|2x0K  
} 4=*VXM/  
} &wK%p/?  
C Ij3D"  
} 1 /7H` O?  
[M Z'i/  
Shell排序: IUbYw~f3  
2[qO;js  
package org.rut.util.algorithm.support; :HMnU37m W  
sW3-JA]  
import org.rut.util.algorithm.SortUtil; Ko>pwhR}  
^3*/x%A,g  
/** pRPz1J$58  
* @author treeroot 1ncY"S/VO  
* @since 2006-2-2 <,HdX,5  
* @version 1.0 wrac\.  
*/ MftX~+  
public class ShellSort implements SortUtil.Sort{ FL/@e$AK  
)O#>ONm^  
/* (non-Javadoc) ,DXNq`24  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |XLx6E2F  
*/ }yK_2zak5i  
public void sort(int[] data) { J0C,K U(  
for(int i=data.length/2;i>2;i/=2){ ~BDVmQa  
for(int j=0;j insertSort(data,j,i); a^,6[  
} F?T3fINR  
} %_KNAuM  
insertSort(data,0,1); 7t0\}e  
} _F;(#D  
Y3mATw 3Wh  
/** FxTOc@<  
* @param data ,l.O @  
* @param j a4 O  
* @param i R`:Y&)c_$  
*/ O5{ >k  
private void insertSort(int[] data, int start, int inc) { ^7.864  
int temp; \2L%%M  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); O<)"k j 7  
} ( T VzYm y  
} 5A>W;Q\4  
} NMJ230?  
*h-_   
} cPPE8}PVH  
4IG'T m  
快速排序: 1WfN_JKB5  
|F iL1_  
package org.rut.util.algorithm.support; ZgcA[P  
Yih^ZTf]O?  
import org.rut.util.algorithm.SortUtil; xD8x1-  
n,wLk./`  
/** dp&4G6Y<A  
* @author treeroot V2^(qpM!  
* @since 2006-2-2 {I@@i8)]  
* @version 1.0 yCf*ts1  
*/ Vx~[;*{,C9  
public class QuickSort implements SortUtil.Sort{ #?@k=e\  
ZcYxH|Gn  
/* (non-Javadoc) EZ8Ih,j9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W&A22jO.1  
*/ Y 'Yoc  
public void sort(int[] data) { C8m8ys  
quickSort(data,0,data.length-1); Aq^1(-g  
} c#<v:b  
private void quickSort(int[] data,int i,int j){ S@k4k^Vg  
int pivotIndex=(i+j)/2; @-NdgM<  
file://swap |4\.",Bg  
SortUtil.swap(data,pivotIndex,j);  G;Q)A$-  
=4RnXZ[P0  
int k=partition(data,i-1,j,data[j]); )U6T]1  
SortUtil.swap(data,k,j); 6w0/;8(_m  
if((k-i)>1) quickSort(data,i,k-1); Z h)Qq?H  
if((j-k)>1) quickSort(data,k+1,j); $Dxz21|P7  
</5uB' B ^  
} isLIfE>  
/** eRWTuIV6  
* @param data 2ZNTj u7h  
* @param i <*i '  
* @param j ^*C8BzcH  
* @return exiCy 1[+  
*/ 5%rD7/7N  
private int partition(int[] data, int l, int r,int pivot) { 5 UpN/\He  
do{ 7i`@`0   
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ~]*P/'-{#  
SortUtil.swap(data,l,r); SaH0YxnY+  
} x\]%TTps  
while(l SortUtil.swap(data,l,r); w`bojM@e1  
return l; :D-My28'  
} I: P/ ?-  
7 M=LyrO  
} /[#<@o  
npkE [JE:  
改进后的快速排序: yEJ}!/  
I8d#AVF2  
package org.rut.util.algorithm.support; <{Wsh#7}.  
il(dVW  
import org.rut.util.algorithm.SortUtil; X2 c<.  
9fp1*d  
/** _8vq]|rC  
* @author treeroot Du k v[/60  
* @since 2006-2-2 $z"3_4a  
* @version 1.0 R*`A',]:9  
*/ i(Cd#1<  
public class ImprovedQuickSort implements SortUtil.Sort { 02g}}{be8  
{9q~bt  
private static int MAX_STACK_SIZE=4096; f }PT3  
private static int THRESHOLD=10; %>_ZUu3M  
/* (non-Javadoc) .S>:-j'u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AifnC4  
*/ I'{-T=R-q  
public void sort(int[] data) { \Bg;}\8 X  
int[] stack=new int[MAX_STACK_SIZE]; IGeXj%e  
f7c%Z:C#Y  
int top=-1; .uG|Vq1v  
int pivot; 494"-F6  
int pivotIndex,l,r; 7E*d>:5I  
ujGvrY j  
stack[++top]=0; `rzgC \  
stack[++top]=data.length-1; :@a8>i1&  
hg_@Ui@[z  
while(top>0){ &k*sxW'  
int j=stack[top--]; wWB-P6  
int i=stack[top--]; :8cp]v dW  
i1e|UR-wl  
pivotIndex=(i+j)/2; bnt>j0E  
pivot=data[pivotIndex]; y=_8ae}aD~  
'te4mY}  
SortUtil.swap(data,pivotIndex,j); *~~ >?  
u )cc  
file://partition o(Yj[:+m  
l=i-1; . Xn w@\k'  
r=j; }ac0}  
do{ 6,"86  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 3e+ Ih2  
SortUtil.swap(data,l,r); 4 8l!P(>?y  
} } QVREj  
while(l SortUtil.swap(data,l,r); G9J+D?'hH  
SortUtil.swap(data,l,j); |B yw]\3v  
RwJ#G7S#  
if((l-i)>THRESHOLD){ uH7 $/  
stack[++top]=i; T2|dFKeWG  
stack[++top]=l-1; !)~b Un  
} .Az' THD}  
if((j-l)>THRESHOLD){ c193Or'6Y  
stack[++top]=l+1;  MO|aN,  
stack[++top]=j; BO)K=gl;8  
} :Lu=t3#  
$a|C/s+}7>  
} LxaR1E(Cc'  
file://new InsertSort().sort(data); qOAK`{b  
insertSort(data); *Y8nea^$  
} T|RW-i3  
/** oKjQ? 4  
* @param data \6~(# y  
*/ !8S $tk  
private void insertSort(int[] data) { zXWf($^&E  
int temp;  0IO#h{t  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); OP>rEUtj  
} 4d~Sn81xW  
} &Jw]3U5J  
} VL4ErOoZ  
(`<X9w,  
} f'._{"  
QS.t_5<U  
归并排序: "l0z?u  
j_ i/h "  
package org.rut.util.algorithm.support; s3?pv  
r/E'#5 Q  
import org.rut.util.algorithm.SortUtil; K'z|a{ru.{  
#Duz|F+%  
/** Plpt7Pa_  
* @author treeroot ig|o l*~  
* @since 2006-2-2 _ T ;+*  
* @version 1.0 !@j5yYf  
*/ w$%d"Jm#X  
public class MergeSort implements SortUtil.Sort{ &cy @Be}|T  
0RmQfD>  
/* (non-Javadoc) O%feBe  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LA?h+)  
*/ sswYwU  
public void sort(int[] data) { #'s}=i}y"C  
int[] temp=new int[data.length]; `j+[JMr  
mergeSort(data,temp,0,data.length-1); \0. c_  
} F#d`nZ=M  
QfqosoP\D  
private void mergeSort(int[] data,int[] temp,int l,int r){ -;rr! cQ?  
int mid=(l+r)/2; -:Up$6PR  
if(l==r) return ; "\0&1C(G  
mergeSort(data,temp,l,mid); h:%L% Y9z  
mergeSort(data,temp,mid+1,r); Y)="of  
for(int i=l;i<=r;i++){ U 8Rko)  
temp=data; rq=D[vX\N(  
} &,~0*&r0  
int i1=l; =P>c1T1-  
int i2=mid+1; W6cA@DN$#  
for(int cur=l;cur<=r;cur++){ aLzRbRv  
if(i1==mid+1) 8&T6  
data[cur]=temp[i2++]; 9[# 9cv  
else if(i2>r) #{97<sU\  
data[cur]=temp[i1++]; yn&+ >{  
else if(temp[i1] data[cur]=temp[i1++]; Z :51Q  
else 5~ho1Ud  
data[cur]=temp[i2++]; p) #7K  
} )q#1C]7m*  
} cO}`PD$i  
7Uy49cs,  
} gr]:u4}  
`rt?n|*QF  
改进后的归并排序: Hqsj5j2i  
9em?2'ysa  
package org.rut.util.algorithm.support; y"5>O|`  
c*iZ6j"iI  
import org.rut.util.algorithm.SortUtil; yffg_^fR  
@0js=3!2  
/** H<6TN^  
* @author treeroot )<Cf,R  
* @since 2006-2-2 ean_/E  
* @version 1.0 K7o!,['W  
*/ `` !BE"yN  
public class ImprovedMergeSort implements SortUtil.Sort { aB@D-Y"HO  
{{'GR"D  
private static final int THRESHOLD = 10; Z.:g8Xl-6  
mR JX,  
/* !2]eVO  
* (non-Javadoc) df@r2 /Y  
* 6[cC1a3r:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rK^Sn7U  
*/ ShFC@)<lJ  
public void sort(int[] data) { 7;]n+QRfm  
int[] temp=new int[data.length]; h?UUd\RU)  
mergeSort(data,temp,0,data.length-1); T&@xgj|!)  
} WKjE^u  
PWU8 9YXp  
private void mergeSort(int[] data, int[] temp, int l, int r) { Rn] `_[)*~  
int i, j, k; @D:$~4ks  
int mid = (l + r) / 2; o u%Xnk~  
if (l == r) Q[5j5vry  
return; %5) 1^  
if ((mid - l) >= THRESHOLD) R 1CoS6  
mergeSort(data, temp, l, mid); {& Pk$Q!  
else #ZFedK0vv  
insertSort(data, l, mid - l + 1); 55aJ =T  
if ((r - mid) > THRESHOLD) ZjCT * qx  
mergeSort(data, temp, mid + 1, r); iA=QK u!  
else I.V?O}   
insertSort(data, mid + 1, r - mid); k5s8s@  
a!OS2Tz:  
for (i = l; i <= mid; i++) { TgFj- "L\  
temp = data; ?ykQ]r6a<  
} tXlo27J  
for (j = 1; j <= r - mid; j++) { 6xDYEvHS  
temp[r - j + 1] = data[j + mid]; hT c VMc  
} gmFCjs  
int a = temp[l]; soSdlV{  
int b = temp[r]; /iz{NulOz*  
for (i = l, j = r, k = l; k <= r; k++) { /Mac:;W`  
if (a < b) { 4<P=wK=a8X  
data[k] = temp[i++]; u1@&o9  
a = temp; HLD8W8  
} else { 6R.%I{x'  
data[k] = temp[j--]; xbZx&`(  
b = temp[j]; 16;r+.FB'  
} n2e#rn  
} cM'\u~m{  
} {xW HKsI>,  
j=&]=0F  
/** Wc6Jgpl  
* @param data uv&??F]/  
* @param l D's Tv}P  
* @param i pQ:7%+Om  
*/ y;'yob  
private void insertSort(int[] data, int start, int len) { i. O670D  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); '>8IOC  
} _zuaImJ0o  
} `a$c6^a  
} HUP~  
} p,(gv])ie  
1R}rL#h;=  
堆排序: 4Z'/dI`  
!c 3c%=W  
package org.rut.util.algorithm.support; !xqy6%p  
NVt612/'7y  
import org.rut.util.algorithm.SortUtil; EISgc {s  
3I}(as{Rp  
/** !]^,!7x,8j  
* @author treeroot o#p{0y  
* @since 2006-2-2 $oPx2sb  
* @version 1.0 //x^[fkNq)  
*/ Z}b25)  
public class HeapSort implements SortUtil.Sort{ G)(vd0X1  
fu=GgD*  
/* (non-Javadoc) <%_7%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D@O#P^?  
*/ ( pDu  
public void sort(int[] data) { G}|!Jdr  
MaxHeap h=new MaxHeap(); As5*)o"&  
h.init(data); ||xiKg  
for(int i=0;i h.remove(); C[4{\3\Va  
System.arraycopy(h.queue,1,data,0,data.length); SC Qr/Q  
} [osIQ!u;:  
eNQQ`ll@m  
private static class MaxHeap{ ~g#$'dS  
>EacXPt-O  
void init(int[] data){ /-{C,+cB  
this.queue=new int[data.length+1]; BXzn-S  
for(int i=0;i queue[++size]=data; Bv=  
fixUp(size); Qru iQ/t  
} %>)HAx `  
} CXAW>VdK_  
nfj8z@!  
private int size=0; ls;!Og9  
5 ]c\{G  
private int[] queue; B IW?/^  
y TbOBl  
public int get() { KxA ^?,t[  
return queue[1]; [|5gw3 y  
} >'/KOK"  
o(gEyK  
public void remove() { nq/SGo[c  
SortUtil.swap(queue,1,size--); s%6{X48vY^  
fixDown(1); L  `\>_  
} , z-#B]  
file://fixdown 9"g!J|+  
private void fixDown(int k) { (yr<B_Y'MY  
int j; O ,9,= 2j  
while ((j = k << 1) <= size) { y E; n. L  
if (j < size %26amp;%26amp; queue[j] j++; f4mQDRlD  
if (queue[k]>queue[j]) file://不用交换 aSGZF w  
break; N I*x):bx  
SortUtil.swap(queue,j,k); yPn!1=-(  
k = j; B$\,l.h E  
} 6r]l8*3 4;  
} u&E$(  
private void fixUp(int k) { :j<ij]rsI  
while (k > 1) { Ic<J]+Xq  
int j = k >> 1; D#.N)@\  
if (queue[j]>queue[k]) |/YwMBi  
break; iXgy/>qgT  
SortUtil.swap(queue,j,k); e`7dRnx&0  
k = j; *WQl#JAr  
} K/;*.u`:  
} MEI.wJZ  
,UveH` n-  
} Xc}~_.]  
((AsZ$[S  
} bTd94  
H\PY\O&cP  
SortUtil: *7JsmN?  
-(;<Q_'s{"  
package org.rut.util.algorithm; iVUkM3  
=[ +)T[  
import org.rut.util.algorithm.support.BubbleSort; -50 Nd=1  
import org.rut.util.algorithm.support.HeapSort; fZ6-ap,u  
import org.rut.util.algorithm.support.ImprovedMergeSort;  {F'~1qf  
import org.rut.util.algorithm.support.ImprovedQuickSort; 5ns.||%k  
import org.rut.util.algorithm.support.InsertSort; jE#&u DfI  
import org.rut.util.algorithm.support.MergeSort; Y CBcyE}p  
import org.rut.util.algorithm.support.QuickSort; GV"X) tGo  
import org.rut.util.algorithm.support.SelectionSort; V,?BVt  
import org.rut.util.algorithm.support.ShellSort; aCZ7G % Y  
(+x!wX( x  
/** (p1}i::Y8  
* @author treeroot b\.l!vn0  
* @since 2006-2-2 8o7%qWX  
* @version 1.0 P.t0o~hoK;  
*/ e.n*IJ_fz  
public class SortUtil { hgU#2`fS  
public final static int INSERT = 1; !xRboPg  
public final static int BUBBLE = 2; U#mrbW  
public final static int SELECTION = 3; 2@jlF!zC  
public final static int SHELL = 4; Y@#rGV>  
public final static int QUICK = 5; >39\u &)  
public final static int IMPROVED_QUICK = 6; v-MrurQ4  
public final static int MERGE = 7; P. >5`^  
public final static int IMPROVED_MERGE = 8; },& =r= B  
public final static int HEAP = 9; B s{n  
Be4n\c.  
public static void sort(int[] data) { p+y2w{{  
sort(data, IMPROVED_QUICK); ixjhZki<  
} FG{45/0We  
private static String[] name={  F<Y>  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" "b6ew2\  
}; RLE6=#4  
(RM;T@`  
private static Sort[] impl=new Sort[]{ 2+'4m#@)  
new InsertSort(), >$/PfyY7@#  
new BubbleSort(), hAvX{]  
new SelectionSort(), 9`| ^cL*6  
new ShellSort(), g+zfa.wQ  
new QuickSort(), Afao Fn+  
new ImprovedQuickSort(), Z{p62|+Ck@  
new MergeSort(), ;#+Se,)  
new ImprovedMergeSort(), {[tx^b  
new HeapSort() >VE!3'/'  
}; J12hjzk6@  
UPr8Q^wm  
public static String toString(int algorithm){ g>&b&X&Y_  
return name[algorithm-1]; QP={b+8  
} yrCY-'%  
wS%j!|xhlV  
public static void sort(int[] data, int algorithm) { ;R4qE$u2^  
impl[algorithm-1].sort(data); bi<?m^j  
} JXNfE,_  
 #-^y9B  
public static interface Sort { l6y*SW5+  
public void sort(int[] data); q*pWx]Y  
} =e!o  
 o8h1  
public static void swap(int[] data, int i, int j) { /q\{OsrX  
int temp = data; _N2tf/C&=  
data = data[j]; w}:&+B:  
data[j] = temp; s<`54o ,  
} nLjc.Z\Bl  
} .`5BgX7W  
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