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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。 .yy-jf/  
插入排序: FL{?W(M  
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package org.rut.util.algorithm.support; &1Ndi<Y^  
c9nR&m8(+  
import org.rut.util.algorithm.SortUtil; qf(mJlU  
/** U|3!ixk>>w  
* @author treeroot tQ{/9bN?P  
* @since 2006-2-2 d AcSG  
* @version 1.0 XX/gS=NE#.  
*/ P)K $+oo  
public class InsertSort implements SortUtil.Sort{ ."+lij=56  
^+76^*0  
/* (non-Javadoc) _P.I+!w:x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (j'\h/  
*/ Dylm=ZZa  
public void sort(int[] data) { ~Y x_ 3  
int temp; lndz  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); FPYk`D  
} 6=;:[  
} #r9+thyC  
} a|FkU%sjzZ  
w!"L\QT  
} ZK]qQrIwy  
:dt[ #  
冒泡排序: KdCrI@^  
B2[f1IMI  
package org.rut.util.algorithm.support; ]u5TvI,C  
D<J'\mo  
import org.rut.util.algorithm.SortUtil; fi HE`]0  
,4H? +|!  
/** ~3:VM_  
* @author treeroot zufphS|  
* @since 2006-2-2 Be|! S_Y P  
* @version 1.0 X_2N9$},  
*/ 2V@5:tf  
public class BubbleSort implements SortUtil.Sort{ dq '2y  
WkuCn T  
/* (non-Javadoc) 0ZjT.Ep  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DKS1Sm6d0  
*/ G^ GIHdo  
public void sort(int[] data) { 9:{<:1?  
int temp; Gt&yz"?D  
for(int i=0;i for(int j=data.length-1;j>i;j--){ uJ2ZHrJ  
if(data[j] SortUtil.swap(data,j,j-1); 4<($ZN8  
} Ln# o:"E  
} 7 {92_xRL  
} U:*rlA@_.  
} 6 >)fNCe`  
]S%_&ZMCM  
} - jZAvb  
STwGp<8  
选择排序: ~Fb@E0 }!  
<Z-Pc?F&(k  
package org.rut.util.algorithm.support; ^dpM2$J  
}K)A jZ  
import org.rut.util.algorithm.SortUtil; J6CSu7Voa  
q(qm3OxYo  
/** US)i"l7:H*  
* @author treeroot k\O<pG[U  
* @since 2006-2-2 ~+'f[!^  
* @version 1.0 0cG[<\qT  
*/ .8QhJHwd  
public class SelectionSort implements SortUtil.Sort { wxHd^b  
6{5T^^x?<  
/* cI[i v  
* (non-Javadoc) d[?RL&hJO  
* WuE]pm]c  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B5 /8LEWw  
*/ jP<6J(  
public void sort(int[] data) { i]<@  
int temp; 3YLK?X8  
for (int i = 0; i < data.length; i++) { Ct `)R  
int lowIndex = i; F2zo !a8  
for (int j = data.length - 1; j > i; j--) { FZgf"XM>  
if (data[j] < data[lowIndex]) { K-]) RIM  
lowIndex = j; p8 S~`fjV  
} 3_@I E2dA  
} Ly(iq  
SortUtil.swap(data,i,lowIndex); BW;@Gq@N  
} }N9PV/a  
} P>q~ocq<  
pImq< Z  
} N=u( 3So  
z2V ->UK)  
Shell排序: Wg%]  
>0SG]er@  
package org.rut.util.algorithm.support; NdJ]\>5oN,  
Gu{1%bb#kL  
import org.rut.util.algorithm.SortUtil; kR1 12J9P  
S'RRe84 C  
/** Z<|x6%  
* @author treeroot WS&a9!3;  
* @since 2006-2-2 ,8DC9yM,  
* @version 1.0 4%}iKoT   
*/ B0RVtbK  
public class ShellSort implements SortUtil.Sort{ ,r3`u2)  
YP!}Bf  
/* (non-Javadoc) DPY+{5q2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0Bgj.?l  
*/ sz%]rN6$  
public void sort(int[] data) { @RB^m(> 5  
for(int i=data.length/2;i>2;i/=2){ L|{vkkBo  
for(int j=0;j insertSort(data,j,i); L7lpOy4k  
} jKcl{',  
} ]hlQU%&  
insertSort(data,0,1); .`KzA]&#  
} ^VzhjKSu  
maSVqG  
/** d?5oJ'JU  
* @param data mb_6f:Qh3  
* @param j DQ$m@_/4w  
* @param i ~d<&OL  
*/ [#aJ- Uu  
private void insertSort(int[] data, int start, int inc) { nCV7(ldmH  
int temp; pQZ`dS\  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); fM& fqI  
} kN*I_#  
} >t9DI  
} uu-M7>+  
q(EN]W],  
} M!hD`5.3  
~mHrgxQ-  
快速排序: kxrYA|x  
"\lO Op^-  
package org.rut.util.algorithm.support; WOgkv(5KN  
e~he#o[%a  
import org.rut.util.algorithm.SortUtil; 1D1kjM^Bo  
jc32s}/H  
/** jU 3ceXV  
* @author treeroot u>] )q7s  
* @since 2006-2-2 `"V}Wq ?I  
* @version 1.0 =^zGn+@z  
*/ d=\TC'd"{  
public class QuickSort implements SortUtil.Sort{ am 'K$s  
_iA oNT!  
/* (non-Javadoc) UZ-pN_!Z:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $WRRCB/A6  
*/ x'G_z_<V  
public void sort(int[] data) { {a2Gb  
quickSort(data,0,data.length-1); Q"!GdKM  
} Y m|zM1qc  
private void quickSort(int[] data,int i,int j){ 8:,l+[\  
int pivotIndex=(i+j)/2; ]|[oL6"  
file://swap \qqt/  
SortUtil.swap(data,pivotIndex,j); >LwZ"IE V  
>_]j{}~\k  
int k=partition(data,i-1,j,data[j]); MD S;qZx=  
SortUtil.swap(data,k,j); Kuy,qZv!"  
if((k-i)>1) quickSort(data,i,k-1); Nq)=E[$  
if((j-k)>1) quickSort(data,k+1,j); V Z;ASA?;  
AjK'P<:/  
} (&FSoe/!['  
/** _*+ 7*vAL  
* @param data cSBYC_LU  
* @param i #|34(ML  
* @param j 5/Q^p"  
* @return `bffw:; %  
*/ 0Q=4{*:?  
private int partition(int[] data, int l, int r,int pivot) { m-UI^M,@<  
do{ EOjo>w>  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); A - G?@U  
SortUtil.swap(data,l,r); _rK}~y=0  
} 41WnKz9c  
while(l SortUtil.swap(data,l,r); !~cTe!T  
return l; m6)8L?B   
} Cw`v\ 9  
&'UY V>  
} ewSFB< N  
<DCrYt!1}c  
改进后的快速排序: t7("geN]  
DJ;G0*  
package org.rut.util.algorithm.support; ]C-hl}iq  
E/9 U0  
import org.rut.util.algorithm.SortUtil; 'QjX2ytgX  
*BT-@V.4  
/** O/>$kG%ge  
* @author treeroot 6yKr5tH4  
* @since 2006-2-2 9Nglt3J[  
* @version 1.0 =u(. Y  
*/ :Q=Jn?Gjb  
public class ImprovedQuickSort implements SortUtil.Sort { $6T*\(;T@A  
16[>af0<g  
private static int MAX_STACK_SIZE=4096; yw2^kk93|  
private static int THRESHOLD=10; H3}{]&a  
/* (non-Javadoc) >n)N=Zyu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [L8Bgw1  
*/ tB4- of3+  
public void sort(int[] data) {  cpp0Y^  
int[] stack=new int[MAX_STACK_SIZE]; BCk$FM@  
s"<k) Xi  
int top=-1; Y(ly0U}  
int pivot; dy;Ue5  
int pivotIndex,l,r; b2. xJ4  
Q2iS0#  
stack[++top]=0; 0ejx; Mum  
stack[++top]=data.length-1; a-,!K  
!9DqW&8  
while(top>0){ &Jv j@,>$d  
int j=stack[top--]; sXkWs2!  
int i=stack[top--]; 6+A<_r`#Q  
i2A>T/?{  
pivotIndex=(i+j)/2; G*ZHLLO4S\  
pivot=data[pivotIndex]; K_',Gd4L  
at${^,&  
SortUtil.swap(data,pivotIndex,j); wj9CL1Gx  
0: R}  
file://partition 8E"Ik ~  
l=i-1; 7-.Y VM~R  
r=j; u[dR*o0'  
do{ DTk)Y-eQ  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); \1hbCv$Hf  
SortUtil.swap(data,l,r); h}i /u  
} sptDzVM  
while(l SortUtil.swap(data,l,r); R_:47.qq  
SortUtil.swap(data,l,j); h.ojj$f,  
sH(4.36+  
if((l-i)>THRESHOLD){ LX'.up11X5  
stack[++top]=i; *+re2O)Eh'  
stack[++top]=l-1; iXK.QktHw  
} -bu.Ar-#;h  
if((j-l)>THRESHOLD){ nellN}jYsM  
stack[++top]=l+1; DcE)6z#  
stack[++top]=j; \%z#|oV#<  
} q3adhY9|)0  
mBSa*s)  
} -gefdx6ES  
file://new InsertSort().sort(data); E8zga )  
insertSort(data); 3~}G~ t  
} "qjkw f)\  
/** b[<r+e8  
* @param data P% _cIR  
*/ "<H.F 87Z)  
private void insertSort(int[] data) { P?  VGY  
int temp; S:4'k^E  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); NypM+y  
} MWl?pG!Y  
} 2W:R{dHE  
} kg?[   
qk;*$Q  
} 'd4I/  
KWbnSL8  
归并排序: O*xC}$OOn  
A}pmr  
package org.rut.util.algorithm.support; hJ$o+sl  
:kz*.1  
import org.rut.util.algorithm.SortUtil; jh0``{  
NFw7g&1;Kp  
/** q&OF?z7H  
* @author treeroot ["Mq  
* @since 2006-2-2 =(:{>tO_"  
* @version 1.0 'QW/TJ=7r  
*/ IV*@}~BJ  
public class MergeSort implements SortUtil.Sort{ $51M' Qu  
?=,4{(/)  
/* (non-Javadoc) / RU'~(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /(Mi2$@v1  
*/ C4wJSQl_I  
public void sort(int[] data) { V}gP'f07zy  
int[] temp=new int[data.length]; G<n(\85X  
mergeSort(data,temp,0,data.length-1); n+ 1!/H=d  
} XCr\Y`,Z@  
/{@^h#4M1  
private void mergeSort(int[] data,int[] temp,int l,int r){ e59P6/z  
int mid=(l+r)/2; VQ wr8jXye  
if(l==r) return ; ^*JpdmVhu  
mergeSort(data,temp,l,mid); =OY&;d!C  
mergeSort(data,temp,mid+1,r); [P~6O>a5p  
for(int i=l;i<=r;i++){ ML@-@BaN  
temp=data; ZS&>%G  
} RO.GD$ 3n  
int i1=l; !_EL{/ko  
int i2=mid+1; >Y,3EI\  
for(int cur=l;cur<=r;cur++){ n.9k<  
if(i1==mid+1) Sc!]M 5  
data[cur]=temp[i2++]; dQP7CP  
else if(i2>r) _ nFsC  
data[cur]=temp[i1++]; :sO^b*e /  
else if(temp[i1] data[cur]=temp[i1++]; }xhat,9  
else bz5",8Mn  
data[cur]=temp[i2++]; E.~;  
} 0zH^yx:ma  
} Xc)V;1  
1K(a=o[Ce  
} 7C~qAI6Eg  
x1H?e8  
改进后的归并排序: >6 p <n  
]MI> "hn  
package org.rut.util.algorithm.support; "s[Y$!#  
jvfVB'Tmr  
import org.rut.util.algorithm.SortUtil; w\(LG_n|  
85;hs  
/** Jt-s6-2  
* @author treeroot 'p0|wM_  
* @since 2006-2-2 g7*"*%v 2  
* @version 1.0 oh%kuO T[  
*/ si`{>e~`6P  
public class ImprovedMergeSort implements SortUtil.Sort { e<_yr>9g"  
Eu%19s; u  
private static final int THRESHOLD = 10; b1X.#pz7F  
`D2wlyqO6  
/* E>_?9~8Mf  
* (non-Javadoc) _W@SCV)yH  
* X`,4pSQ;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NF?FEUoxz  
*/ 6 yIl)5/=  
public void sort(int[] data) { &5 *)r@+  
int[] temp=new int[data.length]; :V)W?~Z7B  
mergeSort(data,temp,0,data.length-1); fX.V+.rj  
} iEDZ\\,  
e"jA#Y #  
private void mergeSort(int[] data, int[] temp, int l, int r) { "|1MJuY_6  
int i, j, k;  eiLtZQ  
int mid = (l + r) / 2; doR'E=Z4h  
if (l == r) Salu[)+?  
return; ,gU%%>-_~w  
if ((mid - l) >= THRESHOLD) jgiP2k[Xom  
mergeSort(data, temp, l, mid); 3YY<2<  
else o?G^=0T  
insertSort(data, l, mid - l + 1); ?$O5w*  
if ((r - mid) > THRESHOLD) ++KY+j.^  
mergeSort(data, temp, mid + 1, r); `[+9n2j  
else X,- ' v[z  
insertSort(data, mid + 1, r - mid); 0Sz&Oguv  
!g? ~<`   
for (i = l; i <= mid; i++) { DSwF }  
temp = data; Y^)VHE]  
} T7;)HFGeW  
for (j = 1; j <= r - mid; j++) { k&nhF9Y4  
temp[r - j + 1] = data[j + mid]; uo1G   
} Tb-`0^y&X1  
int a = temp[l]; =goZI67  
int b = temp[r]; MDkIaz\U  
for (i = l, j = r, k = l; k <= r; k++) { CvpqQ7&k7  
if (a < b) { -_jV.`t  
data[k] = temp[i++]; F"a^`E&  
a = temp; mRCgKW<  
} else { $ Z;HE/ 3  
data[k] = temp[j--]; nf< <]iHf  
b = temp[j]; (PYUfiOf  
} ]\nG1+ta  
} .}fc*2.'  
} *D1fSu!  
*8p\.za1  
/** PF.sM(  
* @param data u)P$xkf  
* @param l hMJ \a  
* @param i ^F*)Jq  
*/ _lQ+J=J$.R  
private void insertSort(int[] data, int start, int len) { +N[dYm  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); [Hdk=p  
} Xi5kE'_  
} hvBuQuk)  
} v\Y;)/!  
} ;hs:wLVa"  
+!POKr  
堆排序: rOY^w9!  
[[D}vL8d  
package org.rut.util.algorithm.support; qn@Qd9Sf  
`n-e.{O((  
import org.rut.util.algorithm.SortUtil; F dv&kK!  
~E^EF{h   
/** if5Y!Tx?G  
* @author treeroot ?l,i(I  
* @since 2006-2-2 "EpE!jh  
* @version 1.0 JXj`  
*/ sSG]I%oB3  
public class HeapSort implements SortUtil.Sort{ ?p5RSt  
"4"\tM(  
/* (non-Javadoc) c%~'[W04\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3:Co K#  
*/ ! # tRl  
public void sort(int[] data) { j<deTK;.  
MaxHeap h=new MaxHeap(); @7lZ{jV$  
h.init(data); C`mXEX5  
for(int i=0;i h.remove(); B_5q}Bp<  
System.arraycopy(h.queue,1,data,0,data.length); *MagicA  
} Wc3!aLNx  
n+GCL+Mo  
private static class MaxHeap{ j{_MDE7N  
4 d]  
void init(int[] data){ s* 9tWSd  
this.queue=new int[data.length+1]; 88j ;7  
for(int i=0;i queue[++size]=data; nW_  
fixUp(size); !X8R  
} BkfBFUDQ  
} Uzn|)OfWP  
j.}V~Sp*  
private int size=0; I "2FTGA  
Kj 8 W  
private int[] queue; :t^})%  
u_8 22Z  
public int get() { s= fKAxH  
return queue[1]; y3]"H(  
} pNFIO t:(  
vKC&Qi ;  
public void remove() { pH%c7X/[3L  
SortUtil.swap(queue,1,size--); v6\2m c.  
fixDown(1); )d u{ZWr  
} J*X.0&Toc  
file://fixdown h_yR$H&tX  
private void fixDown(int k) { z{L;)U B^  
int j; _|:bac8pL  
while ((j = k << 1) <= size) { F@bCm+z-  
if (j < size %26amp;%26amp; queue[j] j++; ,z )NKt#  
if (queue[k]>queue[j]) file://不用交换 'LLx$y.Ei[  
break; 86F+N_>Z  
SortUtil.swap(queue,j,k); *+4iBpyiB  
k = j; $yFuaqG`Wo  
} 2{Iz  
} ^3o8F  
private void fixUp(int k) { '|N4fbZd  
while (k > 1) { jdf)bO(9#  
int j = k >> 1; D D;+& fe  
if (queue[j]>queue[k]) RyWOiQk;  
break; g 'a?  
SortUtil.swap(queue,j,k); d|+jCTKS  
k = j; x>" JWD  
} 3|r!*+.  
}  .OS?^\  
}QW~.>`  
} VhIIW"1  
-f|^}j?  
} psy(]Pf  
"gajBY  
SortUtil: ={@ @`yP^$  
Ny7=-]N4{"  
package org.rut.util.algorithm; Y6? mY!  
&\` a5[  
import org.rut.util.algorithm.support.BubbleSort; xWe1F2nY  
import org.rut.util.algorithm.support.HeapSort; zRE8299%z  
import org.rut.util.algorithm.support.ImprovedMergeSort; lT!$\E$1   
import org.rut.util.algorithm.support.ImprovedQuickSort; <O)X89dFM  
import org.rut.util.algorithm.support.InsertSort; YkAWKCOni  
import org.rut.util.algorithm.support.MergeSort; )r,R!8  
import org.rut.util.algorithm.support.QuickSort; 7 +hF;  
import org.rut.util.algorithm.support.SelectionSort; +Z~!n  
import org.rut.util.algorithm.support.ShellSort; 2$W,R/CLh  
a{Hb7&  
/** JP,(4h *  
* @author treeroot jP.b oj_u*  
* @since 2006-2-2 ~G:2iSi(#  
* @version 1.0 c1AG3Nb  
*/ [67E5rk-  
public class SortUtil { >AX~c jo  
public final static int INSERT = 1; Cm<j*Cnl  
public final static int BUBBLE = 2; bKMR7&e.Ep  
public final static int SELECTION = 3; (yAvDyJOn  
public final static int SHELL = 4; ?&<o_/`-H5  
public final static int QUICK = 5; 5~%,u2  
public final static int IMPROVED_QUICK = 6; po2[uJ  
public final static int MERGE = 7; HGQ?(2]8$  
public final static int IMPROVED_MERGE = 8; 4zfRD`;  
public final static int HEAP = 9; X8SRQO^  
O:=|b]t  
public static void sort(int[] data) { ie~fQ!rf  
sort(data, IMPROVED_QUICK); VMye5  P  
} sqpOS!]  
private static String[] name={ ) !}-\5F  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 1LId_vJtJ  
}; ^0tf1pV2  
oYh<k  
private static Sort[] impl=new Sort[]{ 5H :~6z  
new InsertSort(), $K_YC~  
new BubbleSort(), :{ WrS  
new SelectionSort(), [kuVQ$)  
new ShellSort(), 6+B{4OY  
new QuickSort(), 87pXv6'FQ  
new ImprovedQuickSort(), cI%"Ynq"3  
new MergeSort(), ;y~{+{{Ow  
new ImprovedMergeSort(), 1S(\2{Ylo  
new HeapSort() H9san5{  
}; u|OzW}xb7j  
@6 ;oN  
public static String toString(int algorithm){ ]dbSa1?  
return name[algorithm-1]; ta4JWllf  
} jWK@NXMH  
o!toO&=  
public static void sort(int[] data, int algorithm) { rx6-~0!eI=  
impl[algorithm-1].sort(data); I' ! r  
} {s8U7rmML  
JYg% ~tW'  
public static interface Sort { t.E4Tqzc>  
public void sort(int[] data); wLOQhviI^-  
} { 8f+h  
jH&_E'XMX  
public static void swap(int[] data, int i, int j) { M6jp1:ZH2q  
int temp = data; @ <OO  
data = data[j]; 4j@i%  
data[j] = temp; K/2.1o;9  
} 3xzkZ8]/  
} JS/M~8+Et  
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