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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。 Fm3t'^SqF  
插入排序: r}W2Ak\  
8\Hr5FqB(  
package org.rut.util.algorithm.support; wC` R>)  
1mH\k5xu  
import org.rut.util.algorithm.SortUtil; SlaDt  
/** zOB=aG?/  
* @author treeroot A'-_TFwW  
* @since 2006-2-2 c\.P/~  
* @version 1.0 Fn+ ?u  
*/ v}[dnG  
public class InsertSort implements SortUtil.Sort{ \#6Fm_b] u  
A-uB\ L  
/* (non-Javadoc) euQ.ArF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e:-8k_0|  
*/ q SD9Pue  
public void sort(int[] data) { =k{`oO~:9+  
int temp; &y\sL"YL!  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); DC:)Ysuj  
} E\th%q,mG  
} s 3r=mp{  
} ^Z}Ob= .G  
fn}UBzED\  
} DtF}Qv A  
"A[ b rG  
冒泡排序: |d}MxS`^  
2UadV_s+s  
package org.rut.util.algorithm.support; _MfD   
k \qiF|B)Z  
import org.rut.util.algorithm.SortUtil; e@n!x}t8  
L?RF;jf  
/** nE|@IGH  
* @author treeroot Em^ (  
* @since 2006-2-2 yL1CZ_  
* @version 1.0 2]WE({P  
*/ mT.e>/pa  
public class BubbleSort implements SortUtil.Sort{ +  WDq =S  
8;"*6vHZ  
/* (non-Javadoc) (^n*Am;zlH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 51xk>_Hm}|  
*/ #T3 h}=  
public void sort(int[] data) { 11UB4CA  
int temp; tIuoD+AW  
for(int i=0;i for(int j=data.length-1;j>i;j--){ nII^mg~  
if(data[j] SortUtil.swap(data,j,j-1); sl|_=oXT  
} B0Xl+JIR#  
} I021p5h|  
} #A<P6zJXR  
} 0q6I;$H  
c&'JmKV>&  
} %f ju G  
z#Nl@NO&  
选择排序: :`Az/U[  
.EP6oKA  
package org.rut.util.algorithm.support; `-UJ /{  
5#2 F1NX  
import org.rut.util.algorithm.SortUtil; jC, FG'P  
G|u3UhyB  
/** BNucc']  
* @author treeroot xWX*tJ4  
* @since 2006-2-2 eon!CE0  
* @version 1.0 b,^*mx=  
*/ S h4wqf  
public class SelectionSort implements SortUtil.Sort { <7sIm^N  
K_BPZ5w  
/* b~0N^p[&%  
* (non-Javadoc) r)T[(D'Tm-  
* zO=%J)-=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t?)pl2!A  
*/ [=%YV# O  
public void sort(int[] data) { l{WjDed  
int temp; Oejq@iM"(  
for (int i = 0; i < data.length; i++) { xN"Z1n7t  
int lowIndex = i; r':TMhzHq?  
for (int j = data.length - 1; j > i; j--) { :@3Wg3N  
if (data[j] < data[lowIndex]) { /Cr/RG:OX  
lowIndex = j; b.yh8|&  
} 0GXO&rCG  
} T-" I9kM  
SortUtil.swap(data,i,lowIndex); "ZMkL)'7-  
} ]MTbW=*}ED  
} Qx`~g,wk8  
!|G(Yg7C  
} Iy7pt~DJ,  
k(s;,B\  
Shell排序: O8u3y  
SU%DW4 6  
package org.rut.util.algorithm.support; UlovXb  
G*}F5.>8(  
import org.rut.util.algorithm.SortUtil; V5rp.~   
PX,rWkOce  
/** v."Dnl  
* @author treeroot ` %?9=h%  
* @since 2006-2-2 >^_ bD  
* @version 1.0 8;\sU?  
*/ 2WBq  
public class ShellSort implements SortUtil.Sort{ H7g< p"  
I!: z,t<  
/* (non-Javadoc) NCS!:d:Ry  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )j&"%[2F  
*/ F # YPOH  
public void sort(int[] data) { bE\,}DTy  
for(int i=data.length/2;i>2;i/=2){ +: Ge_-  
for(int j=0;j insertSort(data,j,i); 6[dur'x  
} u5E]t9~Pq  
} Rm>^tu -  
insertSort(data,0,1); j|(Z#3J  
} c6AWn>H  
]$iN#d|ZU  
/** d^D i*&X  
* @param data 6XV<? 9q  
* @param j W?RE'QV8  
* @param i pa]"iZz  
*/ #gbH^a'  
private void insertSort(int[] data, int start, int inc) { )@g;j>  
int temp; 2XSHZ|;  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); e$/B_o7(  
}  u\e\'\  
} zA+@FR?  
} !]?$f=  
P\R27Jd  
} g@v s*xE  
fP-|+Ty O  
快速排序: dE=Ue#1U@5  
)ZR+lX }  
package org.rut.util.algorithm.support; %@J1]E;  
"5|Lz)=  
import org.rut.util.algorithm.SortUtil; #Z!b G?="  
uQ Co6"e  
/** vA%^`5  
* @author treeroot \F6LZZ2Lv  
* @since 2006-2-2 j|_E$L A\  
* @version 1.0 l}g;'9ZB  
*/ (k"_># %  
public class QuickSort implements SortUtil.Sort{ )LHj+B  
'3(l-nPiG^  
/* (non-Javadoc) \ZXLX'-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7*H:Ob)9k  
*/ e;95a  
public void sort(int[] data) { SAv<&  
quickSort(data,0,data.length-1); `k{& /]  
} \c`oy=qY0  
private void quickSort(int[] data,int i,int j){ Es5p}uh.[Y  
int pivotIndex=(i+j)/2; ra7uU*  
file://swap qv{o |g QB  
SortUtil.swap(data,pivotIndex,j); zsl,,gk9Y  
aw $L$7b}  
int k=partition(data,i-1,j,data[j]); %:C ]7gQ  
SortUtil.swap(data,k,j); r64u31.)  
if((k-i)>1) quickSort(data,i,k-1); ! T9]/H?  
if((j-k)>1) quickSort(data,k+1,j); Yxd X#3  
-p,x&h,p  
} dKhA$f~  
/** C*6S@4k  
* @param data IO$z%r7  
* @param i  b`mj_b  
* @param j *JCQu0  
* @return *wbZ;rfF  
*/ !b|'Vp^U  
private int partition(int[] data, int l, int r,int pivot) { D^F{u Dlb  
do{ 3TuC+'`G  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); \k8rxW  
SortUtil.swap(data,l,r); keAcKhj  
} }E^S]hdvz  
while(l SortUtil.swap(data,l,r); X=X\F@V:u  
return l; $ItF])Bj5N  
} HL{$ ^l#v  
r4 dOK] 0  
} I*[tMzE  
V9 }t0$LN  
改进后的快速排序: |1= !;.#  
T5lQIr@a  
package org.rut.util.algorithm.support; xycH~ ?  
Z+:D)L  
import org.rut.util.algorithm.SortUtil; [Gr*,nVvB  
y6HuN  
/** tJI,r_  
* @author treeroot w5C*L)l  
* @since 2006-2-2 BNGe exs@  
* @version 1.0 WgR4Ix^L#  
*/ *<V^2z$y_  
public class ImprovedQuickSort implements SortUtil.Sort {  3yS  
ni CE\B~  
private static int MAX_STACK_SIZE=4096; 4g _"ku  
private static int THRESHOLD=10; Lm)\Z P+W  
/* (non-Javadoc) 5MxL*DB=b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @$@mqHI}  
*/ %,*$D} H  
public void sort(int[] data) { {==pZpyyh  
int[] stack=new int[MAX_STACK_SIZE]; =(r* 5vd  
$6f\uuTU2"  
int top=-1; D$k8^Vs  
int pivot; ,\PVC@xJ  
int pivotIndex,l,r; +*nGp5=^GE  
@!tVr3;N$  
stack[++top]=0; 9L eNe}9v  
stack[++top]=data.length-1; #TJk-1XM*q  
m@xi0t  
while(top>0){ J QKdW  
int j=stack[top--]; V2&^!#=s  
int i=stack[top--]; dG'SZ&<  
7LZ^QC  
pivotIndex=(i+j)/2; (il0M=M  
pivot=data[pivotIndex]; tOdT[&  
/ONV5IkPy  
SortUtil.swap(data,pivotIndex,j); &Y>zT9]$K  
9|r* pK[  
file://partition h+UnZfm  
l=i-1; ,8Iv9M}2  
r=j; *6ZCDm&N  
do{ y f1CXldi  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ;1AG3P'  
SortUtil.swap(data,l,r); / l>.mK()  
} =Ov7C[(  
while(l SortUtil.swap(data,l,r); Do-^S:.  
SortUtil.swap(data,l,j); H3/caN:  
1cN')"  
if((l-i)>THRESHOLD){ VAQ)Hc]  
stack[++top]=i; 7G2PMe;$m  
stack[++top]=l-1; 3SG?W_  
} *U7 %|wd  
if((j-l)>THRESHOLD){ $+= <(*  
stack[++top]=l+1; T8J4C=?/  
stack[++top]=j; haSM=;uPM  
} Gy29MUF  
!R{R??  
} [2Mbk~  
file://new InsertSort().sort(data); 1hQN8!:<  
insertSort(data); oW}!vf3z  
} [W,|kDK  
/** GUp;AoQ  
* @param data H ZJL/=;  
*/ (yrh=6=z  
private void insertSort(int[] data) { hXL|22>w<  
int temp; U5ZX78>a  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); qc-,+sn(  
} GY!C|7kN  
} h^|5|l  
} z5cYyx r>  
 .jg0a  
} j.?:Gaab?#  
w_-+o^  
归并排序: 2OBfHO~D  
m9$:9yRm  
package org.rut.util.algorithm.support; D9ufoa&ua  
#B}?Zg  
import org.rut.util.algorithm.SortUtil; a=]W zlz  
LgqGVh3\s  
/** D#rrW?-z  
* @author treeroot C*~aSl7  
* @since 2006-2-2 HD`>-E#  
* @version 1.0 5mB]N%rfW%  
*/ j+ ::y) $  
public class MergeSort implements SortUtil.Sort{ M].8HwC+  
7!V @/S}7  
/* (non-Javadoc) |hzT;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d.F)9h]XHO  
*/ !XE aF]8  
public void sort(int[] data) { &_-](w`  
int[] temp=new int[data.length]; LK7Xw3  
mergeSort(data,temp,0,data.length-1);  $g8}^1  
} ^QL 877  
-AD2I {C  
private void mergeSort(int[] data,int[] temp,int l,int r){ |Ur"za;%@  
int mid=(l+r)/2; D0bnN1VP  
if(l==r) return ; n]? WCG}cd  
mergeSort(data,temp,l,mid); S q@H  
mergeSort(data,temp,mid+1,r); w<nv!e?  
for(int i=l;i<=r;i++){ kyUl{Zj  
temp=data; gSi5u# }J  
} HMQI&Lh=U  
int i1=l; ZW4aY}~)$  
int i2=mid+1; i?}>.$j  
for(int cur=l;cur<=r;cur++){ UsW5d]i}Y  
if(i1==mid+1) t 0O4GcAN  
data[cur]=temp[i2++]; L4' [XcY  
else if(i2>r) L10IF  
data[cur]=temp[i1++]; %_)zWlN  
else if(temp[i1] data[cur]=temp[i1++]; |"7Pv skT  
else 7!4V >O8@  
data[cur]=temp[i2++]; >.%4~\U  
} 1 =GI&f2I  
} kA?_%fi1  
4MvC]_&  
} {[#(w75R{  
h[Tk; h  
改进后的归并排序: "~+.Af  
)C]x?R([m  
package org.rut.util.algorithm.support; V0i9DK|!  
G?)vWM`j  
import org.rut.util.algorithm.SortUtil; .Ao0;:;(2-  
MK$Jj "  
/** q?  z>  
* @author treeroot |ng%PQq)  
* @since 2006-2-2 s@@1 *VQ  
* @version 1.0 Ob@Hng% v  
*/ G2Qjoe`Uc  
public class ImprovedMergeSort implements SortUtil.Sort { DZ`k[Z.VZ  
=Viy^ieN$  
private static final int THRESHOLD = 10; F8mC?fbK9  
Yv\!vW7I  
/* g`Md80*Zfk  
* (non-Javadoc) 00<{:  
* ExhL[1E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HtBF=Boq  
*/ &a #GXf  
public void sort(int[] data) { \HSicV#i  
int[] temp=new int[data.length]; z1j|E :  
mergeSort(data,temp,0,data.length-1); szq+@2:  
} 7sV /_3H+  
3oBC   
private void mergeSort(int[] data, int[] temp, int l, int r) { ZwJciT!_~  
int i, j, k; sBW3{uK  
int mid = (l + r) / 2; ;;#nV$  
if (l == r) y:so L:(F  
return; EZj1jpL  
if ((mid - l) >= THRESHOLD) @EZ>f5IO+  
mergeSort(data, temp, l, mid); C3"&sdLb$  
else $G";2(-k  
insertSort(data, l, mid - l + 1); gA:TL{X0  
if ((r - mid) > THRESHOLD) bx;f`8SN  
mergeSort(data, temp, mid + 1, r); qu{mqkfN>  
else J_"3UZ~&  
insertSort(data, mid + 1, r - mid); {BOLP E-  
 rz  
for (i = l; i <= mid; i++) { &?<AwtNN  
temp = data; _Z#eS/,O@  
} 8&(-8  
for (j = 1; j <= r - mid; j++) { 4XG]z_+I  
temp[r - j + 1] = data[j + mid]; VXC4%  
} %$n02"@  
int a = temp[l]; dr]&kqm  
int b = temp[r]; iJnh$jo  
for (i = l, j = r, k = l; k <= r; k++) { h|W%4|]R)  
if (a < b) { TVkcDS  
data[k] = temp[i++]; $I8[BYblB  
a = temp; &9P<qU^N)  
} else { a@ W7<9fY;  
data[k] = temp[j--]; OlGR<X  
b = temp[j]; r%-n*_?.s  
} TA;,>f*  
} y^s1t2]%  
} n2'|.y}Um:  
P;GprJ`l  
/** qi\n]I  
* @param data rO^xz7K^  
* @param l 2%YXc|gGT  
* @param i D rS?=C@  
*/ ^, wnp@  
private void insertSort(int[] data, int start, int len) { $c =&0yt5  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); oyvtZ/@  
} mxL;;-  
} TzF0/T!  
} *.8:'F  
} *8-p7,D  
2Ow<`[7  
堆排序: a<p %hY3  
+Jq`$+%C  
package org.rut.util.algorithm.support; !; WbOnLP  
-1mvhR~  
import org.rut.util.algorithm.SortUtil; d}% (jJ(I  
`o-*Tr  
/** lU$X4JBzS  
* @author treeroot ^x3EotQ\  
* @since 2006-2-2 z93nYY$`Y  
* @version 1.0 ;&mxqY8`'  
*/ 6ZgNHARS  
public class HeapSort implements SortUtil.Sort{ p#<nK+6.8  
Q \WXi  
/* (non-Javadoc) %UG/ak%z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )E~mJln  
*/ t aV|YP$  
public void sort(int[] data) { F@^N|;_2  
MaxHeap h=new MaxHeap(); PP4d?+;V  
h.init(data); 5"2@NL  
for(int i=0;i h.remove(); ,.7vBt6 p  
System.arraycopy(h.queue,1,data,0,data.length); !E0fGh  
} MPG+B/P&  
g RU-g  
private static class MaxHeap{ )@$ &FFIu  
$i%HDt|  
void init(int[] data){ m3"c (L`B  
this.queue=new int[data.length+1]; dqz1xQ1  
for(int i=0;i queue[++size]=data; Sj1r s#@1  
fixUp(size); S w "|iBZ@  
} 4k*qVOBa6R  
} %mmxA6I  
6vWii)O.D  
private int size=0; B$`d&7I;D  
gix>DHq$k  
private int[] queue; eoL0^cZj  
%IU4\ZY>  
public int get() { |VYr=hjo  
return queue[1]; I1v@\Rb  
} NYwGK|  
w(#:PsMo<  
public void remove() { W U0UG$o`  
SortUtil.swap(queue,1,size--); 0#]!#1utg  
fixDown(1); 0STk)> 3$-  
} SZE`J:w  
file://fixdown 4K'|DO|dH  
private void fixDown(int k) { ZmP1C`>  
int j; o{g@Nk'f  
while ((j = k << 1) <= size) { VLx T"]f  
if (j < size %26amp;%26amp; queue[j] j++; iz(m3k:w  
if (queue[k]>queue[j]) file://不用交换  %|bN@@  
break; 7_7xL(F/  
SortUtil.swap(queue,j,k); 9JXhHAxD  
k = j; 30BR 0C  
} > XZg@?Iw  
} ]%||KC!O  
private void fixUp(int k) { +>^[W~[2  
while (k > 1) { Ga?UHw~  
int j = k >> 1; 9QZ}Hn`p  
if (queue[j]>queue[k]) $Uy#/MX  
break; Iw*C*%}[Z  
SortUtil.swap(queue,j,k); e00RT1L  
k = j; Z{ %Uw;d  
} JkJhfFV  
} > `0| X  
yq!CWXZ2  
} ~6MMErSj  
(w}r7`n  
} qjzZ}  
,A^L=+  
SortUtil: '&/(oJ ;O~  
~V!EtZG$  
package org.rut.util.algorithm; ud.poh~|  
ItMl4P`|  
import org.rut.util.algorithm.support.BubbleSort; .^BWR  
import org.rut.util.algorithm.support.HeapSort; Y0rf9  
import org.rut.util.algorithm.support.ImprovedMergeSort; fo *!a$)  
import org.rut.util.algorithm.support.ImprovedQuickSort; Fr<Pe&dn  
import org.rut.util.algorithm.support.InsertSort; 0:HC;J  
import org.rut.util.algorithm.support.MergeSort; <kROH0+  
import org.rut.util.algorithm.support.QuickSort; D . 77WjwQ  
import org.rut.util.algorithm.support.SelectionSort; F6~b#Jz&i  
import org.rut.util.algorithm.support.ShellSort; rT o%=0P  
2k%Bl+I  
/** FV`3,NFk  
* @author treeroot Q4#\{" N!  
* @since 2006-2-2 DCz\TwzU  
* @version 1.0 IM$ 'J  
*/ ER/\ +Z#Z  
public class SortUtil { nIG[{gGX  
public final static int INSERT = 1; FyQOa)5  
public final static int BUBBLE = 2; So0`c,D  
public final static int SELECTION = 3; >h|UCJ1 `  
public final static int SHELL = 4; {|G&W^`  
public final static int QUICK = 5; //VG1@vaVX  
public final static int IMPROVED_QUICK = 6; "sC$%D<oc  
public final static int MERGE = 7; (2n3exx  
public final static int IMPROVED_MERGE = 8; t!NrB X  
public final static int HEAP = 9; qdKh6{  
AX/=}G  
public static void sort(int[] data) { q=T<^Tk#e  
sort(data, IMPROVED_QUICK); jY1^+y{  
} 4mki&\lw`  
private static String[] name={ Z?5,cI[6#  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" $[WN[J  
}; Ufyxw5u5F  
Z?vY3)  
private static Sort[] impl=new Sort[]{ F I80vV7  
new InsertSort(), &pa)Ee>  
new BubbleSort(), I #Arr#%  
new SelectionSort(), a g|9$  
new ShellSort(), L2:oZ&:u`J  
new QuickSort(), e,PQ)1  
new ImprovedQuickSort(), h}Fu"zK  
new MergeSort(), Yk(NZ3O  
new ImprovedMergeSort(), ;Of?fe5:  
new HeapSort() Q&\ZC?y4  
}; lsTe*Od  
MZgmv  
public static String toString(int algorithm){ &Z#Vw.7U  
return name[algorithm-1]; 8Xt=eL/P  
} j(wY/Hl  
"Wzij&WkQ  
public static void sort(int[] data, int algorithm) { fSm?27_  
impl[algorithm-1].sort(data); F>hVrUD8  
} _Eet2;9  
C`=`Ce~|d  
public static interface Sort { B' <O)"1w  
public void sort(int[] data); c~Q`{2%+  
} O :5ldI  
rElG7[+)p  
public static void swap(int[] data, int i, int j) { F 5b]/;|  
int temp = data; LGdf_M-f  
data = data[j]; 0~LnnD N  
data[j] = temp; &q kl*#]  
} bYRQI=gW':  
} 0ll,V  
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