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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。 ^ 0g!,L  
插入排序: ]T;  
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package org.rut.util.algorithm.support; !%(PN3*  
Ya29t 98Pk  
import org.rut.util.algorithm.SortUtil; Jy P$'v~  
/** >c=-uI  
* @author treeroot D zdKBJT+  
* @since 2006-2-2 K)#6&\0tT  
* @version 1.0 %cl{J_}{&  
*/ 6){nu rDBG  
public class InsertSort implements SortUtil.Sort{ ,FK.8c6g  
:NynNu'  
/* (non-Javadoc) +QA|]Y~!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Hn}m}A  
*/ @y/!`Ziw  
public void sort(int[] data) { 'B;n&tJ   
int temp; Wg=qlux-  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); a49t/  
}  ay,"MJ2  
} u+m9DNPF  
} qkA8q@Y4|  
9R99,um$  
} }=fls=c/0  
UG=],\E2  
冒泡排序: l9z{pZ\KM  
X }Fqif4A  
package org.rut.util.algorithm.support; NL-V",gI-~  
Y'Yu1mH)  
import org.rut.util.algorithm.SortUtil; 5Bp>*MR/".  
&HtG&RvQf  
/** *YP:-  
* @author treeroot w3FEX$`_  
* @since 2006-2-2 R,`3 SW()  
* @version 1.0 ltlnXjRUv  
*/ TGZr [  
public class BubbleSort implements SortUtil.Sort{ e3WEsD+  
v9 8s78  
/* (non-Javadoc) F./P,hhN9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A2''v3-h8  
*/ 59H~qE1Md  
public void sort(int[] data) { y]}N [l  
int temp; kC iOcl*$  
for(int i=0;i for(int j=data.length-1;j>i;j--){ <_yy0G  
if(data[j] SortUtil.swap(data,j,j-1); Tbj}04;I  
} q{XeRQ'/  
} ?nwg.&P  
} qT^0 %O:  
} h* V~.H  
4U*CfdZZ  
} 'H(khS  
:8U@KABH@h  
选择排序: 5P[urOvV  
dMK\ y4#i  
package org.rut.util.algorithm.support; 1IN^,A]r2h  
xiO10:L4  
import org.rut.util.algorithm.SortUtil; N~%~Q  
+8.1cDEH\  
/** ~iJ@x;`  
* @author treeroot LJOJ2x  
* @since 2006-2-2 VgO.in^q  
* @version 1.0  #]J"j]L  
*/ ,p V3O`z  
public class SelectionSort implements SortUtil.Sort { I^m9(L4%  
<f;X s(  
/* |N0RBa4%  
* (non-Javadoc) A\v]ZN4  
* 7Mb-v}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aPin6L$;)  
*/ u-=VrHff^*  
public void sort(int[] data) { J+=?taZ  
int temp; !=?Q>mz  
for (int i = 0; i < data.length; i++) { }tbZ[:T{K  
int lowIndex = i; cHon' tS  
for (int j = data.length - 1; j > i; j--) { 6|Xm8,]yRw  
if (data[j] < data[lowIndex]) { m}]\^$d  
lowIndex = j; ~b})=7n.  
} ztC>*SX  
} 9'A^n~JHF  
SortUtil.swap(data,i,lowIndex); [_HOD^  
} w sbzGW~=  
} O+=C8  
gp4@6HuUd  
} ?&bB?mg\  
<[V1z=Eo/]  
Shell排序: Ph17(APt,Q  
xzBUm  
package org.rut.util.algorithm.support; :z2G a  
+THK Jn!>  
import org.rut.util.algorithm.SortUtil; c3J12+~;  
<%m$ V5h  
/** 1SG^X-(GM/  
* @author treeroot :`Xg0J+P  
* @since 2006-2-2 |H;+9(  
* @version 1.0 4S*dNYc  
*/ "]B%V!@  
public class ShellSort implements SortUtil.Sort{ Jm-bE 8b  
@"n]v)[4  
/* (non-Javadoc) Svm'ds7>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L/)Q1Mm  
*/ {YEGy  
public void sort(int[] data) { \Z_29L w=  
for(int i=data.length/2;i>2;i/=2){ beFD}`  
for(int j=0;j insertSort(data,j,i); G=&nwSL  
} J#?z/3v(  
} 8b< 'jft  
insertSort(data,0,1); |b+CXEzo  
} QW2SFpE  
s ?|Hw|j  
/** BO'7c1FU  
* @param data 2{4f>,][  
* @param j v8>bR|n5  
* @param i U<wM#l P|Z  
*/ SzyaVBD3  
private void insertSort(int[] data, int start, int inc) { WT:ZT$W  
int temp; :~'R|l  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ITfz/d8  
} n W:Bo#  
} )F4BVPI  
} j5G=ZI86y  
ZC3;QKw>  
} KdC'#$  
mJ+mTA5bW  
快速排序: 3+H[S#e:Z  
@j=rS S  
package org.rut.util.algorithm.support; /.Jq]"   
f}7/UGd  
import org.rut.util.algorithm.SortUtil; 9S8V`aC  
TnJNs  
/** nTr{ D&JS  
* @author treeroot ;8yEhar  
* @since 2006-2-2 FMz>p1s|dK  
* @version 1.0 abg` : E  
*/ *@g>~q{`  
public class QuickSort implements SortUtil.Sort{ Vj6 w7hz  
l]S%k&  
/* (non-Javadoc) >`I%^+ z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HH|N~pBJB  
*/ 5?8jj  
public void sort(int[] data) { ?4#wVzuzA  
quickSort(data,0,data.length-1); \12y,fOJ  
} tfVlIY<  
private void quickSort(int[] data,int i,int j){ UP*5M  
int pivotIndex=(i+j)/2; ?P(U/DS8  
file://swap U2jlDx4yg  
SortUtil.swap(data,pivotIndex,j); nRcy`A%  
H Yw7*  
int k=partition(data,i-1,j,data[j]); ;jFUtG  
SortUtil.swap(data,k,j); d?N[bA  
if((k-i)>1) quickSort(data,i,k-1); MC%!>,tC  
if((j-k)>1) quickSort(data,k+1,j); *`V r P  
HEF\TH9  
} !%/(a)B$^$  
/** <J-.,:  
* @param data +f'@  
* @param i :*eJ*(M  
* @param j ]BfJ~+ N  
* @return zh9B8r)C  
*/ SDko#  
private int partition(int[] data, int l, int r,int pivot) { [I78<IJc  
do{ $.3J1DU  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); *z)+'D*+  
SortUtil.swap(data,l,r); R6\|:mI,$  
} -V=,x3Zew  
while(l SortUtil.swap(data,l,r); r}-vOPn`E  
return l; k<y~n*{_  
} p:3 V-$4X  
/g$8JL  
} ;nKhmcQ4  
eHU b4,%P  
改进后的快速排序: 0Z jE(3i  
H6<3'P  
package org.rut.util.algorithm.support; 4tz@?T Cb  
Fz2C XC  
import org.rut.util.algorithm.SortUtil; r:H.VAD  
E51S#T  
/**  yHn8t]{  
* @author treeroot I$*LMzve  
* @since 2006-2-2 G!7A]s>C  
* @version 1.0 4{LKT^(!f  
*/ ~9c jc  
public class ImprovedQuickSort implements SortUtil.Sort { O&r9+r1`  
,D\}DJ`)C  
private static int MAX_STACK_SIZE=4096; 7$Lt5rn"}  
private static int THRESHOLD=10; #2;8/"v  
/* (non-Javadoc) !&pk^VFl+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W$:D#;jz`h  
*/ "89L^I  
public void sort(int[] data) { ESnir6HoU  
int[] stack=new int[MAX_STACK_SIZE]; >w#&fd  
69N8COLB  
int top=-1; >Y;[+#H[  
int pivot; S%o6cl=  
int pivotIndex,l,r; scZ&}Ni  
<%S[6*6U  
stack[++top]=0; fK+[r1^  
stack[++top]=data.length-1; rS_pv=0S  
fkD-mRKw  
while(top>0){ ~LJtlJ 0  
int j=stack[top--]; [uFv_G{H  
int i=stack[top--]; =H?^G[y  
cX|(/h,W/  
pivotIndex=(i+j)/2; Wt!8.d} =  
pivot=data[pivotIndex]; 60r0O5=|Fl  
`Db%:l^e  
SortUtil.swap(data,pivotIndex,j); C@ "l"  
)Tw A?kj  
file://partition yXBWu=w3`O  
l=i-1; RSIhZYA  
r=j; tD6ukK1x  
do{ yH]w(z5Z  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 8r48+_y3u  
SortUtil.swap(data,l,r); pf#~|n#t  
} s"(F({J  
while(l SortUtil.swap(data,l,r); jV(b?r)eT{  
SortUtil.swap(data,l,j); @m9dB P  
q m"AatA  
if((l-i)>THRESHOLD){ a#m T@l\  
stack[++top]=i; '-_tF3x  
stack[++top]=l-1; DiSU\?N2'  
} |j}%"wOh  
if((j-l)>THRESHOLD){ pPJE.[)V/  
stack[++top]=l+1; a<P?4tbF  
stack[++top]=j; RU\MT'E>(  
} eNr2-R  
SeBl*V  
} 4_ kg/  
file://new InsertSort().sort(data); o(g}eP,g }  
insertSort(data); _cd=PZhI  
} _EC H(  
/** LNM#\fb  
* @param data +d=8/3O%  
*/ Y 9@ 2d  
private void insertSort(int[] data) { 9''x'E=|  
int temp; Os1=V  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); %QQJSake|  
} Z%QU5.  
} T.q7~ba*  
} E|x t\ *  
)No>Q :t  
} 7|X.E  
4']eJ==OH  
归并排序: 7&1 dr  
l42tTD8Awz  
package org.rut.util.algorithm.support; ,b74 m  
YeB)]$'?u`  
import org.rut.util.algorithm.SortUtil; /,JL \b  
`\Te,  
/** d#:7V%]d p  
* @author treeroot {r_x\VC=p  
* @since 2006-2-2 :Kk+wp}f #  
* @version 1.0 >!% +)  
*/ ~!"z`&  
public class MergeSort implements SortUtil.Sort{ Wn5xX5H C  
s\q m  
/* (non-Javadoc) q!<n\X3]u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jKp79].  
*/ :nxBM#:xu  
public void sort(int[] data) { hf5+$^RZ  
int[] temp=new int[data.length]; @Mf ZP~T+  
mergeSort(data,temp,0,data.length-1); hh<ryuZ  
} "2hs=^&8  
0134mw%jk  
private void mergeSort(int[] data,int[] temp,int l,int r){ &@z M<A  
int mid=(l+r)/2; "/{H=X3was  
if(l==r) return ; =&y6mQ  
mergeSort(data,temp,l,mid); %!OA/7XbG  
mergeSort(data,temp,mid+1,r); $q0i=l&$&  
for(int i=l;i<=r;i++){ P5`BrY,hZ  
temp=data; b.QL\$a &  
} <O4W!UVg  
int i1=l; Dj'+,{7,u  
int i2=mid+1; B=|m._OL]n  
for(int cur=l;cur<=r;cur++){ U\(T<WX,  
if(i1==mid+1) 3EA`]&d>  
data[cur]=temp[i2++]; h8:5[;e  
else if(i2>r) EO G&Xa  
data[cur]=temp[i1++]; k .W1bF9n6  
else if(temp[i1] data[cur]=temp[i1++]; II{"6YI>  
else Df=Xbf>jt9  
data[cur]=temp[i2++]; HA3d9`  
} #BhcW"@  
} U] av{}U  
T;{"lp.  
} G>S3?jGk  
)\QPUdOvx  
改进后的归并排序: 5k`Df/  
tWITr  
package org.rut.util.algorithm.support; 5.F/>?<  
~iU@ns|g\  
import org.rut.util.algorithm.SortUtil; M+Eg{^ q`  
?d@zTAI  
/** ""x>-j4  
* @author treeroot 6:AZZF1  
* @since 2006-2-2 {hBnEj^@  
* @version 1.0 l vfplA  
*/ f<*-;  
public class ImprovedMergeSort implements SortUtil.Sort { xGt>X77  
8RU91H8fE  
private static final int THRESHOLD = 10; 7>xfQ  
}/M`G]wT#  
/* U&u~i 3  
* (non-Javadoc) :KBy(}V  
* (dAE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rz.`$  
*/ ;!pJ %p0Sc  
public void sort(int[] data) { uX~YDy  
int[] temp=new int[data.length]; pU[5f5_  
mergeSort(data,temp,0,data.length-1); oU)3du   
} l'kVi  
KfV& 7yi  
private void mergeSort(int[] data, int[] temp, int l, int r) { =|_k a8{?  
int i, j, k; M6"a w6  
int mid = (l + r) / 2; {{ +8oRzY  
if (l == r) dS;Ui]/J  
return; \>c1Z5H>  
if ((mid - l) >= THRESHOLD) TS@U0Ror  
mergeSort(data, temp, l, mid); iKAqM{(  
else betTAbF  
insertSort(data, l, mid - l + 1); !X+}W[Ic^  
if ((r - mid) > THRESHOLD) 3'6by!N,d  
mergeSort(data, temp, mid + 1, r); tiTh7qYi9  
else /9SNXjfbt  
insertSort(data, mid + 1, r - mid); Mb(hdS90  
2R~[B]2"r  
for (i = l; i <= mid; i++) { (n4Uc308  
temp = data; &f<Ltdw  
} &-p!Lg&D  
for (j = 1; j <= r - mid; j++) { `l+9g"q  
temp[r - j + 1] = data[j + mid]; .'=-@W*  
} \Vl)q>K _h  
int a = temp[l]; 17yg ~  
int b = temp[r]; ew*;mQd  
for (i = l, j = r, k = l; k <= r; k++) { BD&AtOj[,  
if (a < b) { Fz^5cxmw  
data[k] = temp[i++]; V5S6?V \  
a = temp; !b'!7p  
} else { (]sk3 A  
data[k] = temp[j--]; G'WbXX  
b = temp[j]; m";?B1%x  
} 'Jl3%axR  
} 15"[MX A  
} D<(VP{ ,G  
JJu}Ed_  
/** (zIF2qY  
* @param data e)A{ {wD/  
* @param l s5u  
* @param i 0l~z0pvT  
*/ i z dJ,8  
private void insertSort(int[] data, int start, int len) { ]vq=~x  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); '2v$xOh!y  
} (V# *}eGy  
} -ei+r#  
} [<IJ{yfx  
} L?r\J8Ch<  
p@%H. 5&&  
堆排序:  Y$nI9  
.oz(,$CS"  
package org.rut.util.algorithm.support; e\ O&Xe  
`;z;=A*  
import org.rut.util.algorithm.SortUtil;  4B'-tV  
=xRxr @  
/** ?oQAxb&  
* @author treeroot [OQ+&\  
* @since 2006-2-2 mM-7 j z  
* @version 1.0 T*zy^we  
*/ yrV]I(Xe  
public class HeapSort implements SortUtil.Sort{ 7:X@lmBz=  
f}{Oj-:"CC  
/* (non-Javadoc) |5me }!C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5g4xhYl70n  
*/ <O9.GHV1v  
public void sort(int[] data) { w"A%@<V3Ec  
MaxHeap h=new MaxHeap(); `(pe#Xxn  
h.init(data); @rxfOc0J#  
for(int i=0;i h.remove(); r9$7P?zm  
System.arraycopy(h.queue,1,data,0,data.length); 1zc-$B`t  
} m'5rzZP  
<R8!fc{`  
private static class MaxHeap{ lBfG#\rdW~  
J]qx4c  
void init(int[] data){ `sJv?  
this.queue=new int[data.length+1]; n^k Uu2g|  
for(int i=0;i queue[++size]=data; W0KSLxM  
fixUp(size); >@L^^ -r  
} %y R~dt'  
} ^li(q]g1!  
~:):.5o  
private int size=0; &-4SA j  
=\)qUs\z  
private int[] queue; 7G9o%!D5  
o]m56  
public int get() { BV6 U -  
return queue[1]; LKI2R_|n  
} M;1B}x@  
Ub<^;Du5  
public void remove() { <!I^xo [  
SortUtil.swap(queue,1,size--); dJUI.!hv;  
fixDown(1); `&qeSEs\  
} ?\Lf=[  
file://fixdown b'TkYa^  
private void fixDown(int k) { 5.FAuzz  
int j; {^SHIL  
while ((j = k << 1) <= size) { eHH qm^1z  
if (j < size %26amp;%26amp; queue[j] j++; (vr v-4  
if (queue[k]>queue[j]) file://不用交换 6;hZHe'W  
break; +B-;.]L T  
SortUtil.swap(queue,j,k); XyytO;X M-  
k = j; G~`nLC^Y  
} 1JO@G3,  
} s14;\  
private void fixUp(int k) { XyE%<]  
while (k > 1) { qjVhBu7A  
int j = k >> 1; iV8O<en&i  
if (queue[j]>queue[k]) <[<]+r&*  
break; pPt w(5bH  
SortUtil.swap(queue,j,k); +*P;Vb6D  
k = j; yB,{:kq7D  
} :gacP?  
} /2AeJH\-  
Q>[GD(8k  
} %2`geN<  
wNhtw'E8  
} zHW}A `Rz  
,.PmH.zjmR  
SortUtil: ?ZlN$h^  
CAV Q[r5y  
package org.rut.util.algorithm;  *"K7<S[  
'Z ,T,zW  
import org.rut.util.algorithm.support.BubbleSort; g;PZ$|%&s>  
import org.rut.util.algorithm.support.HeapSort; `]\:%+-  
import org.rut.util.algorithm.support.ImprovedMergeSort; I85bzzZB  
import org.rut.util.algorithm.support.ImprovedQuickSort; R.B3  
import org.rut.util.algorithm.support.InsertSort; 6qp' _?  
import org.rut.util.algorithm.support.MergeSort; NlV,] $L1T  
import org.rut.util.algorithm.support.QuickSort; F~${L+^  
import org.rut.util.algorithm.support.SelectionSort; \)m V2r!%  
import org.rut.util.algorithm.support.ShellSort; $09PZBF,i  
/J` ZO$  
/** 8lcB.M  
* @author treeroot '*,P33h9<!  
* @since 2006-2-2  -p2 =?a  
* @version 1.0 f+j-M|A  
*/ (D rDWD4_  
public class SortUtil { ~q05xy8  
public final static int INSERT = 1; /E0/)@pDq  
public final static int BUBBLE = 2; )#_:5^1  
public final static int SELECTION = 3; qLh[BR  
public final static int SHELL = 4; (L7@ez  
public final static int QUICK = 5; T|FF&|Pk  
public final static int IMPROVED_QUICK = 6; E]IPag8C  
public final static int MERGE = 7; CPS1b  
public final static int IMPROVED_MERGE = 8; t+`>zux5(T  
public final static int HEAP = 9; r>gU*bs(  
(jB_uMuS  
public static void sort(int[] data) { -Rz%<`  
sort(data, IMPROVED_QUICK); biw2 f~V  
} g_F-PT>($  
private static String[] name={ 0-a[[hL?  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 3a\.s9A "  
}; z Qhc V  
h`:f  
private static Sort[] impl=new Sort[]{ I&Y9  
new InsertSort(), e#j kp'  
new BubbleSort(), FfR%@ V'  
new SelectionSort(), H`028^CH$  
new ShellSort(), )>~d`_$dt  
new QuickSort(), ( [m[<  
new ImprovedQuickSort(), = 7TK&  
new MergeSort(), Fi!XaO  
new ImprovedMergeSort(), ss>p  
new HeapSort() |g}~7*+i  
}; #X?#v7i",D  
C~#ndl Ij  
public static String toString(int algorithm){ :UdH}u!Ek  
return name[algorithm-1]; SF2<   
} cKbsf ^R[e  
eLc@w<yB  
public static void sort(int[] data, int algorithm) {  /i  
impl[algorithm-1].sort(data); zP$Ef7bB  
} ,Xt!dT-  
zBd)E21H  
public static interface Sort { _onEXrM  
public void sort(int[] data); ]t|-  
} xIh,UW#  
T nG=X:+=  
public static void swap(int[] data, int i, int j) { KeiPo KhZi  
int temp = data; cw)'vAE  
data = data[j]; ubvXpK:.  
data[j] = temp; C-6m[W8S  
} 4RXF.kJ3=  
} 5? rR'0  
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