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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。 ] 9QXQH  
插入排序: gW~YB2 $  
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package org.rut.util.algorithm.support; t]B`>SL3W  
Mc?_2<u-  
import org.rut.util.algorithm.SortUtil; g0 Q,]\~  
/** (6fD5XtS  
* @author treeroot "smU5 s,P  
* @since 2006-2-2 xhALJfv  
* @version 1.0 Wps^wY  
*/ v} !lx)#  
public class InsertSort implements SortUtil.Sort{ 6GuTd  
m+M^we*R  
/* (non-Javadoc) 'A[PUSEE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2z;nPup,  
*/ >_Tyzl>z  
public void sort(int[] data) { 56Lxr{+X  
int temp; U/Cc!WXV]  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); xZ'C(~t  
} p4uzw  
} VK/L}^=GOO  
} s58dHnj5+  
`"~GqFwy~  
} n%WjU)<  
LTf)`SN %'  
冒泡排序: p63fpnH  
]R~hzo  
package org.rut.util.algorithm.support; Q0-gU+ig  
yFm88  
import org.rut.util.algorithm.SortUtil; |zRrGQY m  
[VX5r1-F  
/** zZd.U\"2  
* @author treeroot Swf%WuDj  
* @since 2006-2-2 5ms]Wbh)  
* @version 1.0 3Z~_6P^ +N  
*/ ~|<'@B!6  
public class BubbleSort implements SortUtil.Sort{ gDJ} <^  
_|;d D  
/* (non-Javadoc) i\ uj>;B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OGW3Pe0Z'  
*/ 07=I&Pum  
public void sort(int[] data) { M]%dFQ  
int temp; JS03B Itt  
for(int i=0;i for(int j=data.length-1;j>i;j--){ %$Fe[#1  
if(data[j] SortUtil.swap(data,j,j-1); 3;jx Io$,  
} 83]m/Iz  
} ]D~Ibv{Y  
} ;wJe%Nw?  
} -~RGjx  
e2fv%  
} 2WLLI8  
nWc@ufY  
选择排序: | oOAy  
3zmbx~| =\  
package org.rut.util.algorithm.support; P( -   
/j3",N+I  
import org.rut.util.algorithm.SortUtil; 7m%12=Im5  
VL5VYv=:  
/** o; 6^:  
* @author treeroot 4C?4M;  
* @since 2006-2-2 P B-x_D  
* @version 1.0 ?c8( <_I+  
*/ Wm{ebx  
public class SelectionSort implements SortUtil.Sort { $v_&j E  
n2_;:=  
/* yIr0D 6L  
* (non-Javadoc) /]0SF_dZ  
* 2&pE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M*cF'go  
*/ FbMtor  
public void sort(int[] data) { OVxg9  
int temp; 0$b4\.0>~  
for (int i = 0; i < data.length; i++) { 0nBDF79  
int lowIndex = i; b)#rUI|O  
for (int j = data.length - 1; j > i; j--) { g9;s3qXiG  
if (data[j] < data[lowIndex]) { MtF^}/0w!`  
lowIndex = j; = [: E  
} ' -9=>  
} O> _ F   
SortUtil.swap(data,i,lowIndex); unqUs08  
} -ON-0L  
} F+NX [  
U8gj\G\`  
} $y.0h(  
mJ(ElDG  
Shell排序: 7;Lv_Y"b  
pUqNB_  
package org.rut.util.algorithm.support; O8>&J-+2  
raSga'uT;  
import org.rut.util.algorithm.SortUtil; rtbV*@Z  
p(="73  
/** _E8Cvaob  
* @author treeroot :.=j)ljTx  
* @since 2006-2-2 Gj%q:[r  
* @version 1.0 f.%3G+  
*/ 8mLW^R:`  
public class ShellSort implements SortUtil.Sort{ UqsOG<L'6  
bJ9*z~z)e  
/* (non-Javadoc) ai?N!RX%H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O#):*II`9  
*/ 8QL=%Pv  
public void sort(int[] data) { HCkfw+gaV  
for(int i=data.length/2;i>2;i/=2){ FG!hb?_1  
for(int j=0;j insertSort(data,j,i); z`$c4p6G6  
} #*w)rGkU2  
} Ahbh,U  
insertSort(data,0,1); WI*CuJU<zJ  
} 8lDb<i  
Q}l~n)=  
/** lup2> "?*  
* @param data bZAL~z+ V  
* @param j IsJx5GO  
* @param i a9 q:e  
*/ oclU)f.,  
private void insertSort(int[] data, int start, int inc) { oD9L5c)  
int temp; Dm}M8`|X  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); <]DUJuF-M  
} j_h:_D4  
} _Yp~Oj  
} ^A=tk!C  
hosY`"X  
} ]jiVe_ OS<  
 f}*:wj  
快速排序: ]a uqf  
l\Ww^   
package org.rut.util.algorithm.support; D:IG;Rsc  
$%'3w~h`  
import org.rut.util.algorithm.SortUtil; KZ#\ >  
=O8>[u;  
/** }(XKy!G6  
* @author treeroot 8HZ+r/j  
* @since 2006-2-2 :?y Ma$  
* @version 1.0 +?Cy8Ev?  
*/ YAeF*vP  
public class QuickSort implements SortUtil.Sort{ );q~TZ[Do  
.oLV\'HAR  
/* (non-Javadoc) S-Bx`e9'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YHu]\'Ff  
*/ goF87^M  
public void sort(int[] data) { n{etDO  
quickSort(data,0,data.length-1); (dQ=i  
} VlL%dN; 0  
private void quickSort(int[] data,int i,int j){  QX<x2U  
int pivotIndex=(i+j)/2; j!%^6Io4  
file://swap ^Mc9MZ)  
SortUtil.swap(data,pivotIndex,j); h9}*_qc&kV  
mW{>  
int k=partition(data,i-1,j,data[j]); W\w#}kY  
SortUtil.swap(data,k,j); 7m]J7 +4  
if((k-i)>1) quickSort(data,i,k-1); pWv1XTs@t:  
if((j-k)>1) quickSort(data,k+1,j); |S |'o*u  
[Y@>,B!V  
} ;y1/b(t  
/** yf8kBT:&S  
* @param data \weg%a  
* @param i -}h^'#  
* @param j d}ycC.h4k  
* @return {i8 zM6eC  
*/ ~7*2Jp'  
private int partition(int[] data, int l, int r,int pivot) { <m1v+cnqo  
do{ -MTYtw(  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); %OO}0OW  
SortUtil.swap(data,l,r); mb1c9  
} V?wV*]c  
while(l SortUtil.swap(data,l,r); *W^ZXhrZ  
return l; r;[=y<Yf  
} Z(Y:  
d(ypFd9z  
} C&*1H`n  
Vr( Z;YO  
改进后的快速排序: y35~bz^2  
2=0HQXXrq  
package org.rut.util.algorithm.support; 8=joVbs  
w=rD8 @  
import org.rut.util.algorithm.SortUtil; u-4@[*^T$  
vW vu&3tx  
/** DU]KD%kl  
* @author treeroot VHl1f7%@H  
* @since 2006-2-2 A%$~  
* @version 1.0 7C3YVm6g  
*/ blIMrP%  
public class ImprovedQuickSort implements SortUtil.Sort { Dat',5  
+0UBP7kn  
private static int MAX_STACK_SIZE=4096; Q% d1n*;+  
private static int THRESHOLD=10; Bi :!"Nw[X  
/* (non-Javadoc) 4:N*C7 P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c-Yd> 4+ 1  
*/ CPRVSN0b{4  
public void sort(int[] data) { { $yju_[  
int[] stack=new int[MAX_STACK_SIZE]; u5glKE  
"opMS/a"7  
int top=-1; dpNERc5  
int pivot; S5y.H  
int pivotIndex,l,r; zhFm2  
|C<#M<  
stack[++top]=0; 25{_x3t^  
stack[++top]=data.length-1; YE{t?Y\5  
*`Vmncv3  
while(top>0){ `V\?YS}  
int j=stack[top--]; *tEqu%N1'  
int i=stack[top--]; $#u'XyA  
9CeR^/i  
pivotIndex=(i+j)/2; A!x&,<  
pivot=data[pivotIndex]; Xw!\,"{s  
GjHR.p?-  
SortUtil.swap(data,pivotIndex,j); PMB4]p%o  
K SO D(  
file://partition >5L_t   
l=i-1; [{BY$"b#:  
r=j; fTvm2+.nX  
do{ c AEvv[  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); kv3Dn&<rJ  
SortUtil.swap(data,l,r); 8SKrpwy  
} 'OziP  
while(l SortUtil.swap(data,l,r); :Q3pP"H,}  
SortUtil.swap(data,l,j); ;' uQBx}  
3+>n!8x ;A  
if((l-i)>THRESHOLD){ wLXJ?iy3  
stack[++top]=i; yivu|q  
stack[++top]=l-1; L8PX SJ  
} tULGfvp  
if((j-l)>THRESHOLD){ V1V0T ,  
stack[++top]=l+1; @q/g%-WNz  
stack[++top]=j; "Nj/{BU  
} gaY&2  
f;zNNx< ;  
} ~,HFd`  
file://new InsertSort().sort(data); ~&73f7  
insertSort(data); ls]N&!/hq  
} ~dRstH7u  
/** cA q3Gh  
* @param data 0^-1d2Z~  
*/ 4F~^RR"  
private void insertSort(int[] data) { 3Hom0g,V4  
int temp; w#9Kt W,tt  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6&eXQl  
} :V)jm`)#+  
} ]zSFX =~(S  
} ^}d]O(  
&P|[YP37_  
} x [FLV8`b|  
:BF? r  
归并排序: [fa4  
A>yU0\A  
package org.rut.util.algorithm.support; UUJQc ~=  
ilL0=[2  
import org.rut.util.algorithm.SortUtil; "S%t\  
EX`P(=zD  
/** sV  
* @author treeroot .9qK88fUR  
* @since 2006-2-2 tUJRNEg  
* @version 1.0 uPA ( 1  
*/ |/*Pimk  
public class MergeSort implements SortUtil.Sort{ A]/o-S_  
(hzN(Dh  
/* (non-Javadoc) ~ y!'\d>q<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YZBh}l6t  
*/ 3`HK^((o  
public void sort(int[] data) { 5G* cAlU  
int[] temp=new int[data.length]; aKbmj  
mergeSort(data,temp,0,data.length-1); %T{]l;5  
} 0Z9DewwP  
RwWg:4   
private void mergeSort(int[] data,int[] temp,int l,int r){ "#j}F u_!  
int mid=(l+r)/2; _8VP'S=  
if(l==r) return ; senK (kbc  
mergeSort(data,temp,l,mid); az(<<2=  
mergeSort(data,temp,mid+1,r); (CmK> "C+  
for(int i=l;i<=r;i++){ \n) ',4mY  
temp=data; $RaN@& Wm  
} )|F|\6:ne  
int i1=l; +T+@g8S  
int i2=mid+1; h4? x_"V"  
for(int cur=l;cur<=r;cur++){ FRBu8WW0L  
if(i1==mid+1) n{ ;j  
data[cur]=temp[i2++]; 'x!\pE-  
else if(i2>r) afEa@et'  
data[cur]=temp[i1++]; _IDZ.\'>$  
else if(temp[i1] data[cur]=temp[i1++]; pN%&`]Wev  
else N4!`iS Y  
data[cur]=temp[i2++]; &v{Ehkr*  
} zH8E,)  
} fd\RS1[  
|^pev2g  
} @X2*O9  
NB"S ,\M0  
改进后的归并排序: du3f'=q6|  
X W)TI  
package org.rut.util.algorithm.support; u epyH  
-u2i"I730  
import org.rut.util.algorithm.SortUtil; '$K E= Jy  
tMIYVHGy  
/** !'7fOP-J]  
* @author treeroot k_al*iM>H  
* @since 2006-2-2 `FP?9R6Y  
* @version 1.0 E9HMhUe  
*/ \N>-+r  
public class ImprovedMergeSort implements SortUtil.Sort { +eM${JyXH  
rH+OXGoB  
private static final int THRESHOLD = 10; Lsmcj{1d  
-Mt 5< s  
/* hvd}l8  
* (non-Javadoc) NR{wq|"  
* 'Wonz<{'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K"}fD;3  
*/ yVd^A2  
public void sort(int[] data) { 5Wt){rG0Z  
int[] temp=new int[data.length]; yzA05npTl  
mergeSort(data,temp,0,data.length-1); OG,P"sv  
} I$n= >s  
[M_{~1xX  
private void mergeSort(int[] data, int[] temp, int l, int r) { e%4?-{(  
int i, j, k; A KNx~!%2  
int mid = (l + r) / 2; 1SQATUV  
if (l == r) T5BZD +Ta  
return; X|M!Nt0'  
if ((mid - l) >= THRESHOLD) YeX*IZX8  
mergeSort(data, temp, l, mid); +Q*`kg'  
else g;IlS*Ld  
insertSort(data, l, mid - l + 1); ^?69|,  
if ((r - mid) > THRESHOLD) g8),$:Uw  
mergeSort(data, temp, mid + 1, r); 85{m+1O~  
else &v\F ah U  
insertSort(data, mid + 1, r - mid); W+XWS,(  
r );R/)&  
for (i = l; i <= mid; i++) { A 5?"  
temp = data; 6Z/`p~e  
} LHAlXo;  
for (j = 1; j <= r - mid; j++) { .J#'k+>  
temp[r - j + 1] = data[j + mid]; E$d3+``  
} WKf<% E$  
int a = temp[l]; JuRoeq.  
int b = temp[r]; Vs>Pv$kW  
for (i = l, j = r, k = l; k <= r; k++) { gjF5~ `  
if (a < b) { +bjy#=  
data[k] = temp[i++]; >&L|oq7$  
a = temp; N,ht<l\  
} else { oL4W>b )  
data[k] = temp[j--]; *2X6;~  
b = temp[j]; N&8TG  
} vccWe7rh  
} +,Dc0VC?  
} ! \] ^c  
w$gvgz  
/** wAMg"ImJ  
* @param data T.q2tC[bR  
* @param l a|ftl&uk  
* @param i -luQbGcT3  
*/ <Ij!x`MS+  
private void insertSort(int[] data, int start, int len) { +^I0> \  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); vwR_2u  
} 5<?Ah+1  
} 337.' |ZE  
} ROO*/OOd  
} ?7{U=1gb$  
5Z=4%P*I  
堆排序: N_t,n^i9>*  
(1/Sf&2i  
package org.rut.util.algorithm.support; OhF55,[  
DF%d/a{]  
import org.rut.util.algorithm.SortUtil; 3)OZf{D[  
#86N !&x  
/** %cNN<x8  
* @author treeroot ;5a$ OM  
* @since 2006-2-2 mrGV{{.  
* @version 1.0 -15e  
*/ s8j |>R|k  
public class HeapSort implements SortUtil.Sort{ o7y<Zd`Bj  
J?4{#p  
/* (non-Javadoc) H7O~So*N5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =4y gbk  
*/ *MJm:  
public void sort(int[] data) { v|?@k^Ms  
MaxHeap h=new MaxHeap(); 'Kelq$dn#  
h.init(data); Iil2R}1  
for(int i=0;i h.remove(); WR+j?Fcf  
System.arraycopy(h.queue,1,data,0,data.length); !0 7jr%-~  
} d[9,J?'OQ  
G,8mFH  
private static class MaxHeap{ YMGy-]!o  
o$_0Qs$  
void init(int[] data){ OT#@\/>  
this.queue=new int[data.length+1]; w,~*ead  
for(int i=0;i queue[++size]=data; /%$Zm^8c  
fixUp(size); / "m s  
} YV>a 3  
} +in)(a.  
M-WSdG[AJ  
private int size=0; O7.V>7Y9H  
UlXm4\@  
private int[] queue; 9~ p;iiKGG  
EPo)7<|>  
public int get() { AvL /gt:  
return queue[1]; %$BRQ-O  
} 7uBx  
j }~?&yB  
public void remove() { {uDW<u_!  
SortUtil.swap(queue,1,size--); 8lQ/cGAc  
fixDown(1); hzD)yf  
} a%go[_w  
file://fixdown |N,^*xP(6  
private void fixDown(int k) { 1eXMMZ/?  
int j; 3=S |U,  
while ((j = k << 1) <= size) { vgW(l2,@  
if (j < size %26amp;%26amp; queue[j] j++; ra^</o/  
if (queue[k]>queue[j]) file://不用交换 2 BY|Cp4R  
break; b"g^Jm! j  
SortUtil.swap(queue,j,k); G<Z}G8FW^  
k = j; lL}6IZ5sb  
} >=k7#av  
} a%q,P @8  
private void fixUp(int k) { %p7 ?\>  
while (k > 1) { +V=<vT  
int j = k >> 1; d`\SX(C  
if (queue[j]>queue[k]) U$:^^Zt`B  
break; I0-1Hr  
SortUtil.swap(queue,j,k); L5hF-Ek! 3  
k = j; %Tp9G Gt  
} [bLKjD  
} vbJ<|#|r-  
A-x^JC=  
} 81RuNs]  
aru2H6  
} g5BL"Dn  
cMK|t;" 3  
SortUtil: DVQr7tQf  
qw+ 7.h#V  
package org.rut.util.algorithm; YB*)&@yx  
5{H)r   
import org.rut.util.algorithm.support.BubbleSort; wXNng(M7  
import org.rut.util.algorithm.support.HeapSort; )St0}?I~  
import org.rut.util.algorithm.support.ImprovedMergeSort; ]H`wE_2tu  
import org.rut.util.algorithm.support.ImprovedQuickSort; `(W"wC   
import org.rut.util.algorithm.support.InsertSort; F"Dr(V  
import org.rut.util.algorithm.support.MergeSort; 8%4;'[UV  
import org.rut.util.algorithm.support.QuickSort; G>~/  
import org.rut.util.algorithm.support.SelectionSort; 1I;q@g0  
import org.rut.util.algorithm.support.ShellSort; !&%KJS6p4  
pI@71~|R  
/** l6zAMyau5  
* @author treeroot EXdX%T\  
* @since 2006-2-2 ^%oH LsY9  
* @version 1.0 h(WlJCln  
*/ <n_? $ TJ  
public class SortUtil { a- *sm~u  
public final static int INSERT = 1; su0K#*P&I  
public final static int BUBBLE = 2; \:'GAByy  
public final static int SELECTION = 3; j ,rc9  
public final static int SHELL = 4; c{ 'Z.mut  
public final static int QUICK = 5; 1dD%a91  
public final static int IMPROVED_QUICK = 6; MpKXC   
public final static int MERGE = 7; cg )(L;  
public final static int IMPROVED_MERGE = 8; #m#IBRD:  
public final static int HEAP = 9; &UDbH* !4=  
G-CL \G\n  
public static void sort(int[] data) { D(z#)oDr  
sort(data, IMPROVED_QUICK); U& GPede  
} mmQC9nZ  
private static String[] name={ 4n#u?)  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" H Qj,0#J)  
}; y^r'4zN'  
X&Oo[Z  
private static Sort[] impl=new Sort[]{ u`EK^\R  
new InsertSort(), azZ|T{S  
new BubbleSort(), Md X4Rp'  
new SelectionSort(), yCz"~c  
new ShellSort(), Rd(8j+Q?ps  
new QuickSort(), [KUkv  
new ImprovedQuickSort(), `&I6=,YLp  
new MergeSort(), ~ESw* 6s9  
new ImprovedMergeSort(), j1Ys8k%$l  
new HeapSort() =Vh]{ y~$  
}; OL1xxzo  
$7X;FmlG&  
public static String toString(int algorithm){ *Y1s4FXu2  
return name[algorithm-1]; do`'K3a"  
} }51QUFhL0  
^uo,LTq+  
public static void sort(int[] data, int algorithm) { Q3=X#FQ  
impl[algorithm-1].sort(data); mAH7; u<  
} Gb2|e.z  
hzbvR~rn  
public static interface Sort { '3XOU.  
public void sort(int[] data); l[ko)%7V  
} A@M2(?w4  
g=KK PSK  
public static void swap(int[] data, int i, int j) {  H#F"n"~$  
int temp = data; qY&(O`?m&  
data = data[j]; '>[ZfT  
data[j] = temp; TaF*ZT2  
} n4?;!p<F  
} }?b\/l<  
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