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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。 o@T-kAEf-.  
插入排序: "u29| OY  
'x/pV5[hQ  
package org.rut.util.algorithm.support; KV&4Ep#  
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import org.rut.util.algorithm.SortUtil; PydU.,^7  
/** ]J|]IP Xy  
* @author treeroot G,o5JL"t  
* @since 2006-2-2 JK.<(=y\  
* @version 1.0 $W}YXLFj?  
*/ BF)!VnJ  
public class InsertSort implements SortUtil.Sort{ VY9o}J>,w  
#Y|t,x;  
/* (non-Javadoc) K"fr4xHq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +UvT;"  
*/ {,;R\)8D  
public void sort(int[] data) { 2Kg-ZDK8  
int temp; p;nRxi7'  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); o'Rr2,lVi  
} {N.J A=  
} \3K%>   
} *z?Vy<u G  
P|U9f6^3  
} `IC2}IiF  
2Q bCH}  
冒泡排序: N$&)gI:  
T( LlNq  
package org.rut.util.algorithm.support; ~;)H |R5kV  
5N~JRq\  
import org.rut.util.algorithm.SortUtil; 'tJb(X!]q  
PvHX#wJ  
/** I= '6>+P  
* @author treeroot 5`>%{ o  
* @since 2006-2-2 rl/]Ym4j  
* @version 1.0 czG]rl\1  
*/ *3R3C+ L  
public class BubbleSort implements SortUtil.Sort{ OV>JmYe1{/  
;*+wg5|  
/* (non-Javadoc) 5EX Ghc'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4CH/~b1 (  
*/ d U}kimz  
public void sort(int[] data) { I9VU,8~  
int temp; 7cMHzh k^  
for(int i=0;i for(int j=data.length-1;j>i;j--){ m7 $t$/g  
if(data[j] SortUtil.swap(data,j,j-1); Gf<f#.5y ,  
} eVRPjVzQ'Q  
} 9_Ws8nE  
} ,S V34+(  
} FTJvkcc?m  
]K0G!TR<  
} BmhIKXE{*  
i:/Ws1=q  
选择排序: q+ZN$4m  
OyG#  
package org.rut.util.algorithm.support; *4 HogC  
n.l7V<1  
import org.rut.util.algorithm.SortUtil; G4<M@ET  
S4O'N x  
/** fUKi@*^ZUa  
* @author treeroot oVAY}q|wU  
* @since 2006-2-2 :iEIo7B  
* @version 1.0 HSG7jC'_  
*/ wdMVy=SS  
public class SelectionSort implements SortUtil.Sort { ehTRw8"R  
goje4;  
/* gt \O  
* (non-Javadoc) wg}rMJoG|  
* 4 Q<c I2|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wAA9M4  
*/ )<K3Fz Bs  
public void sort(int[] data) { ; 8B )J<y  
int temp; Oj]4jRew  
for (int i = 0; i < data.length; i++) { ~TfN*0  
int lowIndex = i;  8 ?4/  
for (int j = data.length - 1; j > i; j--) { s2kom)  
if (data[j] < data[lowIndex]) { :ceT8-PBRx  
lowIndex = j; Va-.  
} 1e)5D& njS  
} crlCN  
SortUtil.swap(data,i,lowIndex); w f""=;  
} L (@".{T  
} HceZTe@  
{8e4TD9E0  
} f?BApm  
I&Z+FL&@f  
Shell排序: MZWicfUy  
c`s ]ciC  
package org.rut.util.algorithm.support; (yO8G-Z0  
'z$!9ufY,  
import org.rut.util.algorithm.SortUtil; Aa!#=V1d  
u5I#5  
/** <(tnClAn  
* @author treeroot @g%^H)T  
* @since 2006-2-2 u;Rm/.  
* @version 1.0 ZOzwO6(_  
*/ / 0ra]}[(  
public class ShellSort implements SortUtil.Sort{ I4Rd2G_  
Wagb|B\  
/* (non-Javadoc) /I~(*X  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $,8}3R5}  
*/ J/>9w  
public void sort(int[] data) { ["BD,mB  
for(int i=data.length/2;i>2;i/=2){ G_v^IM#B=  
for(int j=0;j insertSort(data,j,i); ojbms>a  
} i~ITRi@  
} 7*C>4Gs  
insertSort(data,0,1); W%P$$x5&  
} t2hI^J0y  
<d~IdK'\x  
/** F x3X  
* @param data 7OdJ&Gzd  
* @param j /;;$9O9  
* @param i Y*-dUJK-`  
*/ ,tl(\4n  
private void insertSort(int[] data, int start, int inc) { M-zqD8D  
int temp; P.W@5:sD  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); V2o1~R~  
} 58[.]f~0  
} zOn% \  
} d 6=Z=4w  
Gq =i-I  
} +z O.|`+  
|wkUnn4UB8  
快速排序: \xjI=P'-25  
_r?.%] \.  
package org.rut.util.algorithm.support; m~RMe9Qi  
/ TAza9a  
import org.rut.util.algorithm.SortUtil; Rc#c^F<  
?XnKKw\  
/** #<81`%  
* @author treeroot LPS]TG\  
* @since 2006-2-2 2|JtRE+  
* @version 1.0 OR<%h/ \f  
*/ .9$ 7 +  
public class QuickSort implements SortUtil.Sort{ D[Kq`  
0}wmBSl  
/* (non-Javadoc) +?ilTU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c^8csQ fG  
*/ {O5(O oDa  
public void sort(int[] data) { c;doxNd6  
quickSort(data,0,data.length-1); R=<uf:ca  
} G~{#%i  
private void quickSort(int[] data,int i,int j){ SGUZ'}  
int pivotIndex=(i+j)/2; '"]QAj?N  
file://swap B j z@X  
SortUtil.swap(data,pivotIndex,j); j% Wip j;c  
I9hZ&ed16  
int k=partition(data,i-1,j,data[j]); m98w0D@Ee  
SortUtil.swap(data,k,j); Z3N^)j8  
if((k-i)>1) quickSort(data,i,k-1); yv2wQ_({  
if((j-k)>1) quickSort(data,k+1,j); Lem:zXj  
?vg|;Q  
} _\u?]YTv  
/** d#u*NwY}  
* @param data ]^v*2!_(  
* @param i t$(<9  
* @param j QRz5eGpW  
* @return eK =v<X  
*/ j!/=w q  
private int partition(int[] data, int l, int r,int pivot) { ;bYLQ  
do{ a=AP*adx8  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); `c'R42S A  
SortUtil.swap(data,l,r); Qt"i  
} 9k3RC}dEr  
while(l SortUtil.swap(data,l,r); gi JjE  
return l; j7 \y1$w  
} nrJW.F]S8[  
EzGO/uZ]  
} *4O9W8Qz  
j)Y68fKK  
改进后的快速排序: ^wMZG'/  
x2Dg92  
package org.rut.util.algorithm.support; B; r` 1 G  
?7\$zn)v#  
import org.rut.util.algorithm.SortUtil; *5q_fO  
w~Jy,[@n  
/** k@9CDwh*s  
* @author treeroot sg8j}^VI  
* @since 2006-2-2 WNo<0|X  
* @version 1.0 sO 0j!;N  
*/ '=cAdja  
public class ImprovedQuickSort implements SortUtil.Sort { !xz{X?  
/(?,S{]  
private static int MAX_STACK_SIZE=4096; u$nYddak  
private static int THRESHOLD=10; b&I{?'"%8  
/* (non-Javadoc) mM\jU5P:^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hDD]Kc;G^1  
*/ O[\obi"}  
public void sort(int[] data) { ;]Ko7M(4  
int[] stack=new int[MAX_STACK_SIZE]; ;\rKkH"K8n  
{:ZsUnzm  
int top=-1; OJXK]dZ  
int pivot; ySNXjH Q=  
int pivotIndex,l,r; cp L'  
]Aa.=  
stack[++top]=0; 'I5~<"E  
stack[++top]=data.length-1; baz~luM  
/tu\q  
while(top>0){ {]3Rk  
int j=stack[top--]; ~s -"u *>  
int i=stack[top--]; IpKpj"eoLy  
JXk<t5@D  
pivotIndex=(i+j)/2; lvk r2Meu<  
pivot=data[pivotIndex]; fe+2U|y  
7R=A]@  
SortUtil.swap(data,pivotIndex,j); ?f4jqF~Fh  
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file://partition MRa |<yK  
l=i-1; *Fm#Qek  
r=j; T )"U q  
do{ 3mH(@ -OA  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); U_ *K%h\m  
SortUtil.swap(data,l,r); F.@U X{J  
} %617f=(E?!  
while(l SortUtil.swap(data,l,r); X$9 "dL  
SortUtil.swap(data,l,j); +=g9T`YbE  
(VB-5&b  
if((l-i)>THRESHOLD){ NG\^>.8  
stack[++top]=i; ">!<OB  
stack[++top]=l-1; o 76QQ+hP  
} OE5JA8/H  
if((j-l)>THRESHOLD){ [hXnw'Im/  
stack[++top]=l+1; )=6o  ,  
stack[++top]=j; #({ 9M  
} Gu5%Pou  
Z{rD4S @^  
} ,Ep41v;T%`  
file://new InsertSort().sort(data); LRKl3"M  
insertSort(data); CINC1Ll_24  
} 6/l{e)rX2o  
/** w6@8cNXK  
* @param data n}toUqUnk\  
*/ ,,CheRO  
private void insertSort(int[] data) { &b!|Y  
int temp; B| .8+Q  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =`KV),\  
} G_)(?  
} $\vTiS'  
} ^eY% T5K   
uJu#Vr:m  
} MT(G=r8  
)sG/H8  
归并排序: @;g|styh^  
3FhkK/@  
package org.rut.util.algorithm.support; 0mYKzJi  
jR@J1IR<  
import org.rut.util.algorithm.SortUtil; iYBp"+#2  
CT#u+]T  
/** KXbD7N.  
* @author treeroot t7qzAr  
* @since 2006-2-2 *;X,yEK[  
* @version 1.0 8|H^u6+yz  
*/ 6[SE*/E@L  
public class MergeSort implements SortUtil.Sort{ ;.#l[  
^UiSezc I  
/* (non-Javadoc) oV=~ Q#v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C ehz]C  
*/ 8D1+["&  
public void sort(int[] data) { _0 $W;8X  
int[] temp=new int[data.length]; Ry4`Q$=:  
mergeSort(data,temp,0,data.length-1); tk~<tqMq  
} PYJ8\XZ1_N  
5`O af\S  
private void mergeSort(int[] data,int[] temp,int l,int r){ v]e6CZwo  
int mid=(l+r)/2; n s`njx}C  
if(l==r) return ; <OA[u-ph%S  
mergeSort(data,temp,l,mid); e'L$g-;>4b  
mergeSort(data,temp,mid+1,r); +RN|ZG&  
for(int i=l;i<=r;i++){ ddG5g  
temp=data; VMgO1-F  
} aOK,Mm:iO  
int i1=l; E6_.Q `!ll  
int i2=mid+1; Dvz}sQZ  
for(int cur=l;cur<=r;cur++){ d|RDx;r l8  
if(i1==mid+1) 7@l.ZECJ1  
data[cur]=temp[i2++]; !a<}Mpeg  
else if(i2>r) 0w<G)p~%n  
data[cur]=temp[i1++]; 9#D?wR#J=  
else if(temp[i1] data[cur]=temp[i1++]; oH]"F  
else 3*;S%1C^  
data[cur]=temp[i2++]; |8s45g>  
} \o=YsJ8U  
} 8CN~o|uN  
#Ss lH  
} *h Z{>  
R@Bnrk  
改进后的归并排序: V/CZcMY_  
SRBQ"X[M2  
package org.rut.util.algorithm.support; `8<h aU  
Kta7xtu  
import org.rut.util.algorithm.SortUtil; 4M{]YZMw8  
6$_//  
/** A.>TD=Nz  
* @author treeroot F` "bMS  
* @since 2006-2-2 2j( ]Bt:  
* @version 1.0 'D<84|w:1  
*/ X4dXO5\  
public class ImprovedMergeSort implements SortUtil.Sort { H6/C7  
b0ablVk  
private static final int THRESHOLD = 10;  %3A~&  
mb_~ "}A  
/* dPO|x+N,  
* (non-Javadoc) HA W57N  
* xXn2M*g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P K9BowlW  
*/ Ki{]5Rz  
public void sort(int[] data) { 'H.,S_v1x  
int[] temp=new int[data.length]; $9m>(b/;n  
mergeSort(data,temp,0,data.length-1); ^s[OvJb  
} .GH#`j  
IolKe:'>@  
private void mergeSort(int[] data, int[] temp, int l, int r) { /C"?Y'  
int i, j, k; %jRqrICd  
int mid = (l + r) / 2; JMIS*njq^  
if (l == r) O~=|6#c  
return; "E/UNE6P4  
if ((mid - l) >= THRESHOLD) dxAP7v  
mergeSort(data, temp, l, mid); .Bb86Y=3  
else ];VJ54  
insertSort(data, l, mid - l + 1); "O j2B|:s&  
if ((r - mid) > THRESHOLD) 2,.;Mdl  
mergeSort(data, temp, mid + 1, r); |ZBHXv  
else \]gUX-  
insertSort(data, mid + 1, r - mid); wjnQK  
LYvjqNC&4  
for (i = l; i <= mid; i++) { !3 j@gi2  
temp = data; pXBlTZf  
} Z{gJm9  
for (j = 1; j <= r - mid; j++) { lhRo+X#G  
temp[r - j + 1] = data[j + mid]; w=MiJr#3^  
} Q@HW`@i  
int a = temp[l]; 8M9}os  
int b = temp[r]; $yY\[C  
for (i = l, j = r, k = l; k <= r; k++) { i!k5P".o^  
if (a < b) { O2 sAt3'  
data[k] = temp[i++]; bQelU  
a = temp; Se>"=[=  
} else { N@>o:(08  
data[k] = temp[j--]; w,qYT -R  
b = temp[j]; %\ef Mhn  
} ghu8Eg,Y  
} NP_b~e6O=  
} _b(y"+k  
LtIw{* 3  
/** %A ^qm  
* @param data e+ckn   
* @param l pg:1AAhT[  
* @param i ="=Aac#n`  
*/ nL]-]n;  
private void insertSort(int[] data, int start, int len) { <~}# Q,9  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); nm.~~h+8M  
} h..D1(M  
} @ %}4R`S0  
} 5o P 3 1  
} :2_8.+:  
yw3E$~k  
堆排序: }jWZqIqj  
S85}&\m&4  
package org.rut.util.algorithm.support; dD{{G :V  
]BiLLDz(  
import org.rut.util.algorithm.SortUtil; a$K.Or}  
= ^OXP+o  
/** j9XRC9   
* @author treeroot eYD|`)-f<^  
* @since 2006-2-2 `3KXWN`.s  
* @version 1.0 _T)G?iv:&  
*/ 2A^>>Q/,u  
public class HeapSort implements SortUtil.Sort{ \vR&-+8dk  
/y~ "n4CK~  
/* (non-Javadoc) )QO"1#zg@c  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ` e~nn  
*/ ]l.qp5eQ  
public void sort(int[] data) { t:?8I9d  
MaxHeap h=new MaxHeap(); gfW8s+  
h.init(data); /^F$cQX(  
for(int i=0;i h.remove(); Q\ AM] U  
System.arraycopy(h.queue,1,data,0,data.length); D3BNA]P\2@  
} f6d:5 X_  
n,+/%IZ  
private static class MaxHeap{ 5`?'}_[Yj  
Hve'Z,X  
void init(int[] data){ i& ,Wg8#R  
this.queue=new int[data.length+1]; +dIO+(&g  
for(int i=0;i queue[++size]=data; 0s#`H  
fixUp(size); P$=BmBq18`  
} :UrS@W^B  
} j(*ZPo>oD  
zYW+Goz/C  
private int size=0; RIDzNdM>U  
`J(im  
private int[] queue; |9X$@R  
X$<s@_#1  
public int get() { n M?mdb  
return queue[1]; HpD<NVu  
} jhN]1t /\X  
:@H&v%h(u  
public void remove() { ",hPy[k  
SortUtil.swap(queue,1,size--); \k69 S/O  
fixDown(1); +UGWTO\#ha  
} xpb,Nzwt^  
file://fixdown NLz[ F`I  
private void fixDown(int k) { E>}(r%B  
int j; +oT/v3,  
while ((j = k << 1) <= size) { `qnNEJL,  
if (j < size %26amp;%26amp; queue[j] j++; 4%(\y"T  
if (queue[k]>queue[j]) file://不用交换 [A.ix}3mm  
break; scsN2#D7U/  
SortUtil.swap(queue,j,k); I!L`W _  
k = j; _+vE(:T  
} >5aZ?#TS1  
} A=z+@b6  
private void fixUp(int k) { Tf bB1  
while (k > 1) { "Y> #=>8  
int j = k >> 1; _7#9nJ3|  
if (queue[j]>queue[k]) 1JFCYJy  
break; nX|f?5 O  
SortUtil.swap(queue,j,k); U^n71m>]%T  
k = j; XIAHUT5~J  
}  )Uk!;b  
} H:d@@/  
d*e0/#s  
} d\_$Nb*  
z~S(OM@olJ  
} b85r=tm   
zB?} {@  
SortUtil: mYy{G s7  
LL}|# %4d  
package org.rut.util.algorithm; r}1.=a  
xxsax/h  
import org.rut.util.algorithm.support.BubbleSort; oVK3=m@ {  
import org.rut.util.algorithm.support.HeapSort; S{qc1qj  
import org.rut.util.algorithm.support.ImprovedMergeSort; 4NY}=e5  
import org.rut.util.algorithm.support.ImprovedQuickSort; >+ P5Zm(_  
import org.rut.util.algorithm.support.InsertSort; jOYa}jm?  
import org.rut.util.algorithm.support.MergeSort; ^Pq4 n%x  
import org.rut.util.algorithm.support.QuickSort; f[AN=M"B"s  
import org.rut.util.algorithm.support.SelectionSort; ;9+[t8Y)D  
import org.rut.util.algorithm.support.ShellSort; lD%Fk3  
!m* YPY31  
/** w Bi'KS  
* @author treeroot $hn=MOMc  
* @since 2006-2-2 j0XS12eM  
* @version 1.0 Y2j>@  
*/ R0l5"l*@+  
public class SortUtil { 'K L" i  
public final static int INSERT = 1; nI63Ns  
public final static int BUBBLE = 2; -8r';zR  
public final static int SELECTION = 3; /3VSO"kcZ  
public final static int SHELL = 4; 1^x "P#u  
public final static int QUICK = 5; #s\HiO$BT  
public final static int IMPROVED_QUICK = 6; C3XB'CL6  
public final static int MERGE = 7; [%);N\o2Y  
public final static int IMPROVED_MERGE = 8; j>{Dbl:#2  
public final static int HEAP = 9; R7q\^Yzo  
co93}A,k  
public static void sort(int[] data) { &tAhRMa  
sort(data, IMPROVED_QUICK); !>,\KxnM  
} /f5*KRM  
private static String[] name={ 4Pbuv6`RK  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" t==CdCl  
}; Xiy9Oeq2uh  
m>H+noc^  
private static Sort[] impl=new Sort[]{  ?)_?YLi  
new InsertSort(), fbG+.'  
new BubbleSort(), `Mh 3v@K:  
new SelectionSort(), &!xePKvO6k  
new ShellSort(), GQ@`qYLZ+  
new QuickSort(), j.?c~Fh  
new ImprovedQuickSort(), al<;*n{/  
new MergeSort(), >{seaihK  
new ImprovedMergeSort(), OzVCqq"]  
new HeapSort() H'Oy._,]t  
}; {CO]wqEj  
iOFp9i=j  
public static String toString(int algorithm){ H8'q Y  
return name[algorithm-1]; B#+0jdF;  
} o#D;H[' A  
Mx7  
public static void sort(int[] data, int algorithm) { StuQ}  
impl[algorithm-1].sort(data); y.xyr"-Q  
} QgR3kc^7/  
)g()b"Z #>  
public static interface Sort { SH009@l_8  
public void sort(int[] data); F&Bh\C)]  
} r+0<A.''a  
Z}8khNCYr  
public static void swap(int[] data, int i, int j) { y:m ;_U,%c  
int temp = data; z(8:7 G  
data = data[j]; vuNt+  
data[j] = temp; !R 2;]d*  
} KWq&<X5  
} @PaOQ@  
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