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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。 :[,-wZiT~6  
插入排序: f6u<.b  
=J<3B H^m  
package org.rut.util.algorithm.support; "! m6U#^  
GK~uoz:^O  
import org.rut.util.algorithm.SortUtil; !CY: XQm  
/** <V>]-bl/  
* @author treeroot 6||zfH  
* @since 2006-2-2 ^#KkO3  
* @version 1.0 PsaKzAg?  
*/ PFu{OJg&  
public class InsertSort implements SortUtil.Sort{ RG0kOw0  
;M1#M:  
/* (non-Javadoc) b<n*wH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +d>?aqI\A  
*/ YZMSiDv[e  
public void sort(int[] data) { Xq@Bzya  
int temp; 4hz T4!15  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); pE,2pT2>  
} QVJq%P  
} _ VKBzOH  
} DS%~'S  
o#fr5>h-w  
} @>cz$##`  
_Dr9 w&;<  
冒泡排序: Py y!B  
k#liYw I  
package org.rut.util.algorithm.support; nl5A{ s  
N:x--,2  
import org.rut.util.algorithm.SortUtil; -Aaim`06bv  
9sG]Q[:.]  
/** Ra) wlI x  
* @author treeroot Vdd HK  
* @since 2006-2-2 !K*(# [  
* @version 1.0 ;x%"o[[>  
*/ /#jH #f[  
public class BubbleSort implements SortUtil.Sort{ oq${}n<  
cD6S;PSg  
/* (non-Javadoc) _t&` T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g&z8t;@  
*/ sPX&XqWx  
public void sort(int[] data) { %|j`z?i|  
int temp; e`n+U-)z  
for(int i=0;i for(int j=data.length-1;j>i;j--){ d^MRu#]  
if(data[j] SortUtil.swap(data,j,j-1); 5C0![ $W>  
} 7zM9K+3L  
} 5(>SFxz"t  
} G?kK:eV  
} 3{$vN).  
f7YBhF  
} bd]9 kRq1K  
5EU~T.4C<  
选择排序: v{d$DZUs  
&^2SdF  
package org.rut.util.algorithm.support; 5`Q j<   
5skxixG  
import org.rut.util.algorithm.SortUtil; "!+gA&  
w=pr?jt1:  
/** qv& Bai[  
* @author treeroot ]Hp>~Zvbb  
* @since 2006-2-2 IjGPiC  
* @version 1.0 m/z,MT74*J  
*/ sSd/\Ap  
public class SelectionSort implements SortUtil.Sort { L!>nl4O>`  
*Nm$b+  
/* nv0\On7wd  
* (non-Javadoc) )fHr]#v  
* m9vX8;.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jp_|pC'  
*/ KL3Z(  
public void sort(int[] data) { G54J'*Z  
int temp; G4uG"  
for (int i = 0; i < data.length; i++) { wBcoh~ (y  
int lowIndex = i; {j=`  
for (int j = data.length - 1; j > i; j--) { )adV`V%=>  
if (data[j] < data[lowIndex]) { h5SJVa  
lowIndex = j; 6<2H 7'  
} LH)XD[  
} Z:dp/M}  
SortUtil.swap(data,i,lowIndex); W:,Wex^9n  
} |>yWkq   
} 3 P9ux  
vfc:ok1  
} ^|H={pd'c0  
T]ls&cW5  
Shell排序: baBBn %_V  
2 /FQ;<L  
package org.rut.util.algorithm.support;  V\o7KF  
GlnO8cAB  
import org.rut.util.algorithm.SortUtil; In?=$_p  
E7t;p)x  
/** yL*]_  
* @author treeroot tLBtE!J$[  
* @since 2006-2-2 /M_$4O;*@  
* @version 1.0 q pCI [[  
*/ pZ& ,YX  
public class ShellSort implements SortUtil.Sort{ "!~o  
7~SwNt,  
/* (non-Javadoc) $#q`Y+;L2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7 !$[XD  
*/ l-Z( ]  
public void sort(int[] data) { |@vkQ  
for(int i=data.length/2;i>2;i/=2){ 2%dL96  
for(int j=0;j insertSort(data,j,i); z Fo11;*D  
} J0?kEr  
} B1V{3  
insertSort(data,0,1); HwFX,?  
} G18w3BFx  
]1|P|Jp  
/** 9@lWI  
* @param data !R=@Nr>  
* @param j } o%^ Mu B  
* @param i BDT L5N  
*/ X H-_tvB  
private void insertSort(int[] data, int start, int inc) { Qc; kj  
int temp; j,.\QwpU  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); f#\YX tR,k  
} O$<>v\NC?  
} bC/":+s& p  
} c-sjYJXKM*  
"9wD|wsz  
} CIjc5^Y2  
7l D-|yx  
快速排序: p+ CUYo(  
;V xRaj?  
package org.rut.util.algorithm.support; |_V(^b}  
zxbf h/=  
import org.rut.util.algorithm.SortUtil; Rff F:,b  
xT%`"eM}  
/** *yu}e)(0  
* @author treeroot =]Vz= <  
* @since 2006-2-2 CMXF[X)%  
* @version 1.0 9;E=w+  
*/ CkT(\6B-  
public class QuickSort implements SortUtil.Sort{ ;2p+i/sVj  
Z0F~?  
/* (non-Javadoc) UEU/505  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A&Y5z[p  
*/ c$O8Rhx  
public void sort(int[] data) { |' Fe?~P`  
quickSort(data,0,data.length-1);  c0oHE8@  
} E>!=~ 7.  
private void quickSort(int[] data,int i,int j){ [9 W@<p  
int pivotIndex=(i+j)/2; Zt`Tg7m  
file://swap [3 Pp NCY  
SortUtil.swap(data,pivotIndex,j); 5 4gr'qvr  
=p+y$  
int k=partition(data,i-1,j,data[j]); CSO'``16  
SortUtil.swap(data,k,j); E/P~HE{  
if((k-i)>1) quickSort(data,i,k-1); L*6'u17y  
if((j-k)>1) quickSort(data,k+1,j); /yOx=V  
Lo%n{*if  
} Wg']a/m  
/** gcJ!_KZK  
* @param data l<6u@,%s  
* @param i VdLoi\-/L  
* @param j |$RNY``J  
* @return eb62(:=N6  
*/ U2q6^z4l  
private int partition(int[] data, int l, int r,int pivot) { /jY u-H+C  
do{ apvcWF%  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); z3o i(  
SortUtil.swap(data,l,r); #b/qR^2qW  
} h>-P/  
while(l SortUtil.swap(data,l,r); qJhsMo2IH  
return l; b)LT[>f  
} BVQy@:K/  
xa>| k>I  
} ~b f\fPm  
ekM? ' 9ez  
改进后的快速排序: dftBD  
Nwvlv{k'  
package org.rut.util.algorithm.support; / ^.|m3  
sV\_DP/l  
import org.rut.util.algorithm.SortUtil; }E'0vf /  
{/'T:n#  
/** ,X4e?$7g  
* @author treeroot NAbVH{*\U  
* @since 2006-2-2 $v^hzC  
* @version 1.0 OQVrg2A%(  
*/ 8>Cr6m   
public class ImprovedQuickSort implements SortUtil.Sort { IhnBp 6p9  
_?{7%(C  
private static int MAX_STACK_SIZE=4096; x9_mlZ  
private static int THRESHOLD=10; g@.$P>Bh  
/* (non-Javadoc) $ [gN#QW%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PRKZg]?  
*/ nM,:f)z  
public void sort(int[] data) { Cf {F"o  
int[] stack=new int[MAX_STACK_SIZE]; 18X@0e  
U{U"%XdO  
int top=-1; Ve,g9I  
int pivot; ZN[<=w&(cB  
int pivotIndex,l,r;  T]#V  
&V"oJ}M/a  
stack[++top]=0; R.~[$G!  
stack[++top]=data.length-1; 0RUk^  
^D yw(>9  
while(top>0){ l$42MRi/  
int j=stack[top--]; WK ~H]w  
int i=stack[top--]; S,Y|;p<+^  
K/Q"Z*  
pivotIndex=(i+j)/2; Lb*KEF%s  
pivot=data[pivotIndex]; &#r+a'  
H;H=8'  
SortUtil.swap(data,pivotIndex,j); `Q] N]mK  
04a ^jjc  
file://partition @Nu2 :~JO  
l=i-1; Q$jEmmm%V[  
r=j; /d`"WK,  
do{ u v%Q5O4  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); c_lHj#A(l  
SortUtil.swap(data,l,r); $] 6u#5  
} ,:_c-d#  
while(l SortUtil.swap(data,l,r); ui8 Q2{z  
SortUtil.swap(data,l,j); ua\t5M5  
lCi{v.  
if((l-i)>THRESHOLD){ NBikYxa  
stack[++top]=i; 20:F$d  
stack[++top]=l-1; @^{Hq6_`  
} nJD GNm,  
if((j-l)>THRESHOLD){ 12$0-@U  
stack[++top]=l+1; .[|UNg  
stack[++top]=j; sI ,!+  
} H4/wO  
nl@an!z  
} ] V D  
file://new InsertSort().sort(data); -<iP$,bq72  
insertSort(data); q=1 N&#R G  
} p/H.bG!z  
/** <p@Cx  
* @param data hor7~u+  
*/ ;>6< u.N  
private void insertSort(int[] data) { TlG>)Z@/  
int temp; "oP^2|${  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); k,h602(  
} 3Ax'v|&Hg  
} MKK ^-T  
} #Z&/w.D2  
eP{srP3 9  
} `lhw*{3A  
1.hWgWDP  
归并排序: )G[byBa  
U,P_bz*)  
package org.rut.util.algorithm.support; %sa?/pjK  
]#/nn),Z  
import org.rut.util.algorithm.SortUtil; x*7@b8J  
FD=% 4#|  
/** w)btv{*  
* @author treeroot 3%WB?k c  
* @since 2006-2-2 $vn6%M[  
* @version 1.0 ^r}c&@  
*/ ,Oo`*'a[o7  
public class MergeSort implements SortUtil.Sort{ 2TK \pfD  
iL/c^(1  
/* (non-Javadoc) s%[F,hQRk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PKm|?kn{0(  
*/ J^!;$Hkd  
public void sort(int[] data) { $8EEtr,!  
int[] temp=new int[data.length]; cNll??j  
mergeSort(data,temp,0,data.length-1); 0G%9 @^B  
} kVn RSg}R  
kpOdyn(  
private void mergeSort(int[] data,int[] temp,int l,int r){ _]:b@gXUw  
int mid=(l+r)/2; q'3{M]Tk  
if(l==r) return ; rPxRGoR  
mergeSort(data,temp,l,mid); `/| *u  
mergeSort(data,temp,mid+1,r); ) u?f| D  
for(int i=l;i<=r;i++){ 7iB!Uuc  
temp=data; XF`2*:7  
} A(Ct^/x-  
int i1=l; Q*M#e  
int i2=mid+1; +qi& ?}  
for(int cur=l;cur<=r;cur++){ !-I,Dh-A  
if(i1==mid+1) 0uy'Py@2<  
data[cur]=temp[i2++]; -@Ap;,=  
else if(i2>r) 5epI'D  
data[cur]=temp[i1++]; CEfqFn3^  
else if(temp[i1] data[cur]=temp[i1++]; ew;;e|24  
else I}$`gUXX8x  
data[cur]=temp[i2++]; BR|!ya+_2  
} Bfb~<rs[  
} vu0Ql1  
{i;,Io7 W  
} q<Rj Ai  
@2(u=E:^  
改进后的归并排序: RB>=#03  
)Q2Ap&  
package org.rut.util.algorithm.support; I| TNo-!$  
uHbg&eW  
import org.rut.util.algorithm.SortUtil; VZ]iep  
~E}kwF  
/** lZzW- %K  
* @author treeroot y4\X~5kU  
* @since 2006-2-2 0d2P   
* @version 1.0 (Tx_`rO4VY  
*/ l5z//E}W  
public class ImprovedMergeSort implements SortUtil.Sort { =4TQ*;V:  
~DH 9iB  
private static final int THRESHOLD = 10; 5SFr E`  
+.cpZqWn3  
/* aIgexi,  
* (non-Javadoc) 74e=zW?  
* HwU9 y   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 18$d-[hX  
*/ T!/o^0w  
public void sort(int[] data) { /R&`]9].s  
int[] temp=new int[data.length]; fECV\Z  
mergeSort(data,temp,0,data.length-1); Va!G4_OT  
} u%-]-:c  
@ZEBtM%.O  
private void mergeSort(int[] data, int[] temp, int l, int r) { *%uzLW0  
int i, j, k; Z% +$<J  
int mid = (l + r) / 2; 2gWR2 H@  
if (l == r) 4Kqo>|C  
return; nD i^s{  
if ((mid - l) >= THRESHOLD) ED0cnr\yG  
mergeSort(data, temp, l, mid); ?NE/ }?a  
else XtCIUC{r,  
insertSort(data, l, mid - l + 1); lpT&v ;$`  
if ((r - mid) > THRESHOLD) MqJTRBs%  
mergeSort(data, temp, mid + 1, r); ^y,h0?Z9  
else SIK:0>yK"  
insertSort(data, mid + 1, r - mid); b'wy{~l@  
d` GN!^  
for (i = l; i <= mid; i++) { . !1[I{KU  
temp = data; {S0-y  
} K6{wM  
for (j = 1; j <= r - mid; j++) { #-|fdcb  
temp[r - j + 1] = data[j + mid]; !7t&d  
} mG)5xD  
int a = temp[l]; "#)|WVa=BM  
int b = temp[r]; 3a:Hx| Yg  
for (i = l, j = r, k = l; k <= r; k++) { stiF`l  
if (a < b) { Wvl~|Sx]  
data[k] = temp[i++]; ,#;hI{E  
a = temp; <NZPLo F  
} else { j$ T12  
data[k] = temp[j--]; c0wLc,)G  
b = temp[j]; )at:Xm<s  
} 7U7!'xU  
} >/ _#+,  
} ?j&hG|W9<z  
-!!]1\S*Y  
/** %P}H3;2  
* @param data B/X$ZQ0  
* @param l >5O~SF.  
* @param i [IHo ~   
*/ RKLE@h7[?  
private void insertSort(int[] data, int start, int len) { -1Tr!I:1  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 3cHYe  
} =!-}q  
} 2hV -h  
} )4rt-_t<  
} a&{Y~Og?%  
f2~Aug  
堆排序: pW+uVv,  
"{8j!+]4i  
package org.rut.util.algorithm.support; !h1:AW_iz  
4T@+gy^.  
import org.rut.util.algorithm.SortUtil; #E+ybwA  
}etdXO_^  
/** 9(t(sP_  
* @author treeroot _1[Wv?  
* @since 2006-2-2 YPx+9^)  
* @version 1.0 he(K   
*/ np2&W'C/i  
public class HeapSort implements SortUtil.Sort{ fTXip)n!r  
]Ea-MeH  
/* (non-Javadoc) D>k(#vYKB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8XJi}YPQ  
*/ 4Q!A w  
public void sort(int[] data) { N.mRay,  
MaxHeap h=new MaxHeap(); D\M"bf>q1  
h.init(data); CHTK.%AQH!  
for(int i=0;i h.remove(); \^6[^\@[  
System.arraycopy(h.queue,1,data,0,data.length); k.C&6*l!5;  
} NCh-BinK@  
.@fA_8  
private static class MaxHeap{ LEM%B??&5z  
o/3.U=px~  
void init(int[] data){ q\@_L.tc[  
this.queue=new int[data.length+1]; u<8b5An;  
for(int i=0;i queue[++size]=data; s,r|p@^  
fixUp(size); JPn)Op6  
} # bHkI~  
} 3E wdu  
c5%}* "z  
private int size=0; #OPEYJ;*9d  
6=n|Ha  
private int[] queue; CNb(\]  
G_?U?:!AC  
public int get() { 0GxJja  
return queue[1]; Iuz_u2"C  
} G@/iK/>5|`  
7d R?70Sz  
public void remove() { vyDxX  
SortUtil.swap(queue,1,size--); :pM 8Q1:B  
fixDown(1); rJGh3%  
} -+{[.U<1jk  
file://fixdown <Q(E {c3"  
private void fixDown(int k) { T/E=?kBR  
int j; I#xdksY  
while ((j = k << 1) <= size) { f2[R2sto@  
if (j < size %26amp;%26amp; queue[j] j++; ATqblU>D  
if (queue[k]>queue[j]) file://不用交换 %SB4_ r*<  
break; >%;i@"  
SortUtil.swap(queue,j,k); !#pc@(rE  
k = j; Eu' ;f_s  
} h,FU5iK|  
} 6HZtdRQF  
private void fixUp(int k) { vYm-$KQ"o  
while (k > 1) { lIS`_H}  
int j = k >> 1; K@*+;6y@  
if (queue[j]>queue[k]) B!pz0K*uG  
break; C W#:'  
SortUtil.swap(queue,j,k); )YgntI@  
k = j; b 9rQQS  
} 3" m]A/6C}  
} la<.B^  
KO=$Hr?f;  
} QTBc_Z  
b5H}0<  
} Hmr f\(x  
n4!RGq.}  
SortUtil: #1U>  
_|US`,kfc  
package org.rut.util.algorithm; qK7:[\T|?T  
s8&q8r7%  
import org.rut.util.algorithm.support.BubbleSort; <[\I`kzq  
import org.rut.util.algorithm.support.HeapSort; UB5H8&Rf!  
import org.rut.util.algorithm.support.ImprovedMergeSort; joskKik^  
import org.rut.util.algorithm.support.ImprovedQuickSort; Bk\Y v0  
import org.rut.util.algorithm.support.InsertSort; o3hgkoF   
import org.rut.util.algorithm.support.MergeSort; we[+6Z6J  
import org.rut.util.algorithm.support.QuickSort; m6[}KkW  
import org.rut.util.algorithm.support.SelectionSort; ;Tnid7:S  
import org.rut.util.algorithm.support.ShellSort; BW)-F (v   
lXTE#,XVf  
/** ,2$<Pt;  
* @author treeroot Qu[QcB{ro-  
* @since 2006-2-2 QNOdt2NN  
* @version 1.0 4 9N.P;b  
*/ :=y5713  
public class SortUtil { 2c]"*Pb  
public final static int INSERT = 1; 9[zxq`qT}+  
public final static int BUBBLE = 2; )KE  
public final static int SELECTION = 3; m|W17LhW{  
public final static int SHELL = 4; 4*qBu}(  
public final static int QUICK = 5; :pdX  
public final static int IMPROVED_QUICK = 6; dscah0T  
public final static int MERGE = 7; avq$aq(3&  
public final static int IMPROVED_MERGE = 8; hUi@T}aA|  
public final static int HEAP = 9; #?w07/~L  
R`@T<ob)  
public static void sort(int[] data) { WF`%7A39Af  
sort(data, IMPROVED_QUICK); _ cQ '3@  
} dvjj"F'Bf  
private static String[] name={ k5E2{&wZ  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" iGhvQmd(/*  
}; uQ-GJI^t  
)9"^ D  
private static Sort[] impl=new Sort[]{ H9)n<r  
new InsertSort(), fYjmG[4  
new BubbleSort(), 86)2\uan  
new SelectionSort(), KV$&qM.  
new ShellSort(), QO}~"lMj  
new QuickSort(), 9oJM?&i  
new ImprovedQuickSort(), I`{*QU  
new MergeSort(), iY/2 `R  
new ImprovedMergeSort(), N_bgWQY  
new HeapSort() *@''OyL  
}; ]S4"JcM  
0\XWdTj{  
public static String toString(int algorithm){ lo>9 \ Po  
return name[algorithm-1]; 3eE=>E4,  
} pL1ABvBB  
%3qjgyLZ|  
public static void sort(int[] data, int algorithm) { nDdY~f.B  
impl[algorithm-1].sort(data); ]0*aE  
} syB pF:`-W  
={%'tv`  
public static interface Sort { F2}Fuupb.  
public void sort(int[] data); ?@4Mt2Z\  
} <VhmtT%7  
 bUS:c 2"  
public static void swap(int[] data, int i, int j) { Y:;_R=M  
int temp = data; m@XX2l9:9  
data = data[j]; |p[Mp:^^  
data[j] = temp; S'34](9n6  
} `.J)Z=o  
} -:%QoRC y  
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