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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。 ;u(<h?%e  
插入排序: ;Q[mL(1:  
M9@ri^x  
package org.rut.util.algorithm.support; oMTf"0EIW  
g(J&m< I  
import org.rut.util.algorithm.SortUtil; rZ^v?4Z\  
/** ,o,I5>`  
* @author treeroot RYl>  
* @since 2006-2-2 ";Rtiiu  
* @version 1.0 y+6o{`0  
*/ 5qoSEI-m  
public class InsertSort implements SortUtil.Sort{ 4NG?_D5&  
^?]%sdT q  
/* (non-Javadoc) ),!;| bh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LLXVNO@e+  
*/ '07P&g-  
public void sort(int[] data) { D{d>5P?W  
int temp; eI:C{0p=  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); R&';Oro  
} /BV03B  
} Adgc% .#  
} A\#P*+k0  
5N*Ux4M  
} sx51X^d  
7C2&NyWJ  
冒泡排序: L^4-5`gj  
3UQ;X**F  
package org.rut.util.algorithm.support; YH_7=0EJ  
~JD nKo  
import org.rut.util.algorithm.SortUtil; (S`2[.j  
ADk8{L{UU  
/** f'{]"^e=  
* @author treeroot 1`9xIm*9w  
* @since 2006-2-2 @b~fIW_3>  
* @version 1.0 b2=0}~LK  
*/ &o97u4xi  
public class BubbleSort implements SortUtil.Sort{ AT)a :i  
u% n*gcY  
/* (non-Javadoc) VA%Un,5h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0{PzUIM,W  
*/ u=/CRjot  
public void sort(int[] data) { 4T<Lgb  
int temp; `VL}.h  
for(int i=0;i for(int j=data.length-1;j>i;j--){ P?]aWJ  
if(data[j] SortUtil.swap(data,j,j-1); (nab  
} aCxE5$~$  
} $Qy7G{XJ[^  
} %-AE]-/HI  
} Yl$SW;@  
$<|l E/_]  
} D^;*U[F?  
~w;]c_{.b  
选择排序: y tf b$;|  
}Lw>I94e  
package org.rut.util.algorithm.support; @M8|(N%  
@ (i!Y L  
import org.rut.util.algorithm.SortUtil; FsGlJ   
I;?X f  
/** n7YEG-J  
* @author treeroot 3TZ*RPmFRm  
* @since 2006-2-2 R1W}dRE}  
* @version 1.0 zPKr/  
*/ b2b75}_A  
public class SelectionSort implements SortUtil.Sort { !HJ$UG/\  
J!*/a'Cv  
/* LR,7,DH$9'  
* (non-Javadoc) 35x 0T/8  
* DK&h eVIoZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M8b4NF_&  
*/ ;|cTHGxbE  
public void sort(int[] data) { GBC*>Y  
int temp; eb8w~   
for (int i = 0; i < data.length; i++) { {A o,t+j  
int lowIndex = i; -sMytHH.  
for (int j = data.length - 1; j > i; j--) { 1]T`n/d V  
if (data[j] < data[lowIndex]) { x4#T G  
lowIndex = j; *AIEl"29  
} (:+>#V)pZ  
} fXQiNm[P  
SortUtil.swap(data,i,lowIndex); .M4IGOvOS  
} <vbIp&  
} Bfv.$u00p  
:;!\vfZbU  
} '?yCq$&  
jAsO8  
Shell排序: -6Mm#sX  
'~wpP=<yyF  
package org.rut.util.algorithm.support; G8Y+w  
)hj|{h7  
import org.rut.util.algorithm.SortUtil; |k{-l!HI  
mEuHl>  
/** p '{xoV  
* @author treeroot gK3Mms]}m  
* @since 2006-2-2 K$REZe  
* @version 1.0 /M OnNnV  
*/ &VWlt2-R0h  
public class ShellSort implements SortUtil.Sort{ 6b Z[Kt  
C6& ( c  
/* (non-Javadoc) G7* h{nE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I 2HT2c$  
*/  \`xkp[C  
public void sort(int[] data) { u>Ki$xP1  
for(int i=data.length/2;i>2;i/=2){ S C_|A9  
for(int j=0;j insertSort(data,j,i); qSO*$1i  
} czBi Dk4  
} }1%r%TikY  
insertSort(data,0,1); u=qPzmywt  
} ZcryAm:I  
f3 ]  
/** f8:$G.}i  
* @param data p#_[  
* @param j 8kW/DcLE  
* @param i X$wehMBX  
*/ !g 0cC.'  
private void insertSort(int[] data, int start, int inc) { ]X" / yAn  
int temp; +CTmcbyOi  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); +|C[-W7Sw  
} pX<a2F P  
} < `Z%O<X  
} 3DoRE2}  
BQjam+u6  
} =p\Xy*  
` X+j2TmS  
快速排序: 4S *,\q]q  
9)yG.9d1  
package org.rut.util.algorithm.support;  ]R Mb,hJ  
M@^U 0 ?  
import org.rut.util.algorithm.SortUtil; 2;N@aZX  
|@`"F5@,  
/** }~*rx7p  
* @author treeroot gEKO128  
* @since 2006-2-2 NdQ%:OKC  
* @version 1.0 y-cw~kNPP3  
*/ )bYez  
public class QuickSort implements SortUtil.Sort{ 5a$$95oL  
M j~${vj  
/* (non-Javadoc) BQ#jwu0e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MCAXt1sL&E  
*/ hh&Js'd  
public void sort(int[] data) { YZ[%uArm  
quickSort(data,0,data.length-1); caD5Pod4  
} 9N}W(>  
private void quickSort(int[] data,int i,int j){ kGD|c=K}  
int pivotIndex=(i+j)/2; bhKV +oN  
file://swap ALR:MAXwC  
SortUtil.swap(data,pivotIndex,j); ]7F)bIG[  
FR'b`Xv:  
int k=partition(data,i-1,j,data[j]); ^I./L)0= }  
SortUtil.swap(data,k,j); fNEz  
if((k-i)>1) quickSort(data,i,k-1); AijUs*n 2  
if((j-k)>1) quickSort(data,k+1,j); J3\)Jy  
+UaO<L  
} O<a3DyUa;  
/** em/Xu  
* @param data g*r/u;  
* @param i Ty}R^cy{d  
* @param j ;@'0T4Z&l  
* @return t>@yv#  
*/ GG>Y/;^  
private int partition(int[] data, int l, int r,int pivot) { h *waRD  
do{ b.(XS?4o  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); WFpl1O73  
SortUtil.swap(data,l,r); w}b<D#0XC  
} Ei|0L$NCg  
while(l SortUtil.swap(data,l,r); +cw{aI`a8  
return l; Y(W{Jd+  
} Ebbe=4  
_"v~"k 90^  
} "9 u-lcQ\  
9 G((wiE  
改进后的快速排序: ^s.oZj q  
%)dI2 J^Xf  
package org.rut.util.algorithm.support; \)s3b/oap  
2:n|x5\H  
import org.rut.util.algorithm.SortUtil; ]t7ClT)n!  
5GUH;o1m  
/** PgqECd)f  
* @author treeroot {z-NlH  
* @since 2006-2-2 0 c, bet{m  
* @version 1.0 &(WE]ziuO  
*/ taBO4LV  
public class ImprovedQuickSort implements SortUtil.Sort { e8 v; D  
`GP3 D~  
private static int MAX_STACK_SIZE=4096; dY 6B%V  
private static int THRESHOLD=10; h FDze  
/* (non-Javadoc) U=M#41J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 69?I?,7  
*/ \v.HG] /u  
public void sort(int[] data) { '>"`)-  
int[] stack=new int[MAX_STACK_SIZE]; ]C+eJ0"A  
!OV|I  
int top=-1;  \8 g.  
int pivot; ~igRg~k:/  
int pivotIndex,l,r; 0%#t[us Y  
h#vL5At  
stack[++top]=0; Z<w,UvJa  
stack[++top]=data.length-1; fdg[{T4:  
!Jh*a *I}  
while(top>0){ 2f s9JP{^0  
int j=stack[top--]; xAFek;GY?  
int i=stack[top--]; #^"hqNwA  
\-DM-NrZ1U  
pivotIndex=(i+j)/2; 7^`RP e^a+  
pivot=data[pivotIndex]; aS3P(s L  
ks)fQFSbu  
SortUtil.swap(data,pivotIndex,j); /IrKpmbq  
UeFtzty,a  
file://partition 2#,8evH  
l=i-1; 4u7c7K>\Y  
r=j; L; @a E[#z  
do{ :Fw *r|  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ]Fb8.q5(Y  
SortUtil.swap(data,l,r); +>n. T  
} ^[k6]1h  
while(l SortUtil.swap(data,l,r); ")fOup@ ^a  
SortUtil.swap(data,l,j); aY3pvOV  
lqhHbB  
if((l-i)>THRESHOLD){ o}5'v^"6,  
stack[++top]=i; JDIz28Ww  
stack[++top]=l-1; [N'r3  
} ju @%A@s  
if((j-l)>THRESHOLD){ qpH j4  
stack[++top]=l+1; {jq^hM!TEy  
stack[++top]=j; V3aY]#Su  
} 11nO<WH  
wWp?HDl"M  
} Yb,G^+;  
file://new InsertSort().sort(data); THegPD67J  
insertSort(data); Y- z~#;  
} VQZT.^  
/** Vs2v j  
* @param data d %F/,c-=  
*/ s (l+{b &  
private void insertSort(int[] data) { ;jpw"-J`  
int temp; $~;6hnr m  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {EiG23!qV  
} N^@%qUvT]  
} )o}=z\M-bN  
} >?:i6&4o  
dja9XWOg  
} 2/a04qA#  
l,~ N~?  
归并排序: "N=&4<]I5  
{Hrr:hC  
package org.rut.util.algorithm.support; DU*Hnii  
am)J'i,  
import org.rut.util.algorithm.SortUtil; 8. ~Euz  
A=@V LU4%  
/** *o2_EqXL*  
* @author treeroot 3oNt]2w/'  
* @since 2006-2-2 J}93u(T5  
* @version 1.0 ^O,6(@>  
*/ 8tB{rK,  
public class MergeSort implements SortUtil.Sort{ 123-i,epg  
v@<lEG#$"|  
/* (non-Javadoc) 's%ct}y\J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C$EFh4  
*/ j+ T\c2d  
public void sort(int[] data) { ek_i{'hFd  
int[] temp=new int[data.length]; ZS 7)(j$.  
mergeSort(data,temp,0,data.length-1); J>&dWKM3  
} Av[|.~g  
q0xE&[C[M  
private void mergeSort(int[] data,int[] temp,int l,int r){ .x9nWa  
int mid=(l+r)/2; .Jnp{Tet  
if(l==r) return ; {U2| ):  
mergeSort(data,temp,l,mid); qoyGs}/I8  
mergeSort(data,temp,mid+1,r);  4pOc`  
for(int i=l;i<=r;i++){ Yru1@/;  
temp=data; vzT6G/  
} +k"8e?/e.  
int i1=l; Q'V,?#  
int i2=mid+1; w2mlqy2L  
for(int cur=l;cur<=r;cur++){ ~wQ WWRk  
if(i1==mid+1) ,4?|}xg  
data[cur]=temp[i2++]; f+(w(~O  
else if(i2>r) ZYp-dlEXq  
data[cur]=temp[i1++]; 6!Ap;O^*  
else if(temp[i1] data[cur]=temp[i1++];   ]q\=  
else $DMu~wwfG  
data[cur]=temp[i2++]; 3  %{'Uh,  
} fn"jYSy  
} H'(o}cn7~  
_}%# Yz  
} d%|#m)  
X+G*Q}5  
改进后的归并排序: &JzF   
rD)v%vvr&`  
package org.rut.util.algorithm.support; Ab|NjY:  
L.~]qs|G/K  
import org.rut.util.algorithm.SortUtil; h4xf%vA(;  
YuZ   
/** GA@Q:n8UuR  
* @author treeroot "VOW V3Z  
* @since 2006-2-2 V,%5 hl'&  
* @version 1.0 pHbguoH,  
*/ T<~[vjA  
public class ImprovedMergeSort implements SortUtil.Sort { rcb/X`l=  
T;e(Q,!H  
private static final int THRESHOLD = 10; At_Y$N:  
^)K[1]"uM  
/* }qX&*DU_@  
* (non-Javadoc) :a<TV9?H0  
* Gb)iB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g KY ,G  
*/ {xx;zjt%}}  
public void sort(int[] data) { u+T, n  
int[] temp=new int[data.length]; +as\>"Cj+2  
mergeSort(data,temp,0,data.length-1); OX`GN#yl  
} ])";Z  
,,-3p#P bw  
private void mergeSort(int[] data, int[] temp, int l, int r) { [t\Mu}b  
int i, j, k; ?ew]i'9(  
int mid = (l + r) / 2; u,k8i:JY  
if (l == r) ATkqzE`;  
return; ^x#RUv  
if ((mid - l) >= THRESHOLD) 8o!^ZOmU<  
mergeSort(data, temp, l, mid); uy%PTi+A  
else B_G7F[/K  
insertSort(data, l, mid - l + 1); X-WvKH(=w  
if ((r - mid) > THRESHOLD) {.)~4.LhQM  
mergeSort(data, temp, mid + 1, r); 5~6y.S  
else aQuy*\$$  
insertSort(data, mid + 1, r - mid); >R0j<:p :  
mM%BO(X{=  
for (i = l; i <= mid; i++) { WkmS   
temp = data; E8 )*HOT_T  
} N8Q{4c  
for (j = 1; j <= r - mid; j++) { Hs!CJ(0"y  
temp[r - j + 1] = data[j + mid]; U9OF0=g  
} ?5M2DLh~  
int a = temp[l]; HC}C_Q5c91  
int b = temp[r]; a"N_zGf2$  
for (i = l, j = r, k = l; k <= r; k++) { Ct33S+y  
if (a < b) { aDEP_b;  
data[k] = temp[i++]; 9_dsiM7CT  
a = temp; >b${rgCvQ  
} else { \'b- ;exH  
data[k] = temp[j--]; /! 3:K<6@  
b = temp[j]; o8"xoXK5xf  
} h2snGN/{Hb  
} (]dZ+"O{  
} GDntGTE~sk  
o%7yhCY  
/** zK;t041e  
* @param data MeS$+9jV(  
* @param l Hn.UJ4V  
* @param i 'IszS!kY  
*/ ShxX[k  
private void insertSort(int[] data, int start, int len) { ;I' ["k%  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ybkN^OEJ  
} exvsf|  
} ^5F/=TtE G  
} JASn\z  
} ^)I:82"|?  
zvj\n9H  
堆排序: aKO@_R,:  
ij^!TY[0  
package org.rut.util.algorithm.support; C]cw@:o%  
Uk4">]oct  
import org.rut.util.algorithm.SortUtil; st>t~a|T  
[5-5tipvWp  
/** }% *g\%L  
* @author treeroot ~E~J*R Ze  
* @since 2006-2-2  =%`"  
* @version 1.0 `}l%Am  
*/ v2Y=vr  
public class HeapSort implements SortUtil.Sort{ .}wir,  
m~A/.t%=  
/* (non-Javadoc) kzu=-@s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &2J|v#$F  
*/ !T)>q%@ai  
public void sort(int[] data) { b :00w["  
MaxHeap h=new MaxHeap(); u1l#k60  
h.init(data); T rW3@@}j  
for(int i=0;i h.remove(); !/SFEL@_B  
System.arraycopy(h.queue,1,data,0,data.length); YzqhFFaj.  
} i^(<E0vS  
ikC;N5Sw  
private static class MaxHeap{ &V$R@~x  
ewY X\  
void init(int[] data){ iuEdm:pW  
this.queue=new int[data.length+1]; tti.-  
for(int i=0;i queue[++size]=data; n >'}tT)U  
fixUp(size); _=b[b]Ec$s  
} RD^o&VXO  
}  "d'@IN  
;A_QI>>  
private int size=0; p5\b&~ g  
(iFhn*/ E  
private int[] queue; qM)^]2_-  
Qa=;Elp:[  
public int get() { P<1zXs.H  
return queue[1]; n"JrjvS  
} -9mh|&z`  
ZyG528O22  
public void remove() { (`&g  
SortUtil.swap(queue,1,size--); O;~1M3Ii  
fixDown(1); yI!K quMC  
} DIY WFVh  
file://fixdown =B\ ?(  
private void fixDown(int k) { j<[<qU:  
int j; V>hy5hDpH  
while ((j = k << 1) <= size) { ^t"\PpmK<d  
if (j < size %26amp;%26amp; queue[j] j++; {,m!%FDL  
if (queue[k]>queue[j]) file://不用交换 Z`D#L[z$  
break; Cpl\}Qn  
SortUtil.swap(queue,j,k); 8r5j~Df  
k = j; Lt)t}0  
} $ _zdjzT  
} (Q@+W |~  
private void fixUp(int k) { T SOt$7-  
while (k > 1) { [30<  0  
int j = k >> 1; +XsY*$O  
if (queue[j]>queue[k]) 0F"xU1z,  
break; _\[Zr.y  
SortUtil.swap(queue,j,k); &{>~ |^  
k = j; rl4-nA  
} a 3H S!/  
} =T1i(M#  
Y!KGJ^.mF  
} LWY`J0/  
,E_hG3}}  
} O!a5  
? O.&=im_  
SortUtil: BQm H9g|2  
TO QvZ?_  
package org.rut.util.algorithm; +s`n]1HC  
T^"d%au  
import org.rut.util.algorithm.support.BubbleSort; >4;A (s`  
import org.rut.util.algorithm.support.HeapSort; )ZT&V I  
import org.rut.util.algorithm.support.ImprovedMergeSort; bH&[O`vf  
import org.rut.util.algorithm.support.ImprovedQuickSort; vJYy`k^Y  
import org.rut.util.algorithm.support.InsertSort; )J 0'We  
import org.rut.util.algorithm.support.MergeSort; $v+g3+7  
import org.rut.util.algorithm.support.QuickSort; vsc&$r3!5{  
import org.rut.util.algorithm.support.SelectionSort; rK];2[U  
import org.rut.util.algorithm.support.ShellSort; Fd2zvi  
z*:^*,  
/** C6GYhG]  
* @author treeroot AE@*#47  
* @since 2006-2-2 \i{=%[c  
* @version 1.0 BONM:(1  
*/ /QTGZ b  
public class SortUtil { __)9JF  
public final static int INSERT = 1; B;^7Yu0,  
public final static int BUBBLE = 2; FX\ -Y$K  
public final static int SELECTION = 3; ++xEMP)  
public final static int SHELL = 4; Dk:Zeo]+my  
public final static int QUICK = 5; !IP[C?(nB  
public final static int IMPROVED_QUICK = 6; `6UW?1_Z5  
public final static int MERGE = 7; zL1H[}[z+  
public final static int IMPROVED_MERGE = 8; LTrn$k3}  
public final static int HEAP = 9; ! XA07O[@  
o <sX6a9e  
public static void sort(int[] data) { V"gnG](2l  
sort(data, IMPROVED_QUICK); 2U i)'0  
} je.mX/Lpj  
private static String[] name={ `XQM)A  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 9;kWuP>k4u  
}; }*;Hhbox  
C)Mh  
private static Sort[] impl=new Sort[]{ jRzR`>5  
new InsertSort(), Ot5 $~o  
new BubbleSort(), LDO@$jg  
new SelectionSort(), ^BW V6  
new ShellSort(), $f_Brc:n {  
new QuickSort(), 8 z\WyDz  
new ImprovedQuickSort(), db4Ol=  
new MergeSort(), ,0;E_i7  
new ImprovedMergeSort(), Qr$ uFh/y  
new HeapSort() BHqJ~2&FDW  
}; zAS&L%^tV  
\%f4)Qb  
public static String toString(int algorithm){ > PfYHO  
return name[algorithm-1]; (yn!~El3  
} ybcQ , e  
Lr_+) l  
public static void sort(int[] data, int algorithm) { Ggsfr;m\`  
impl[algorithm-1].sort(data); >cQ*qXI0  
} (WX,&`a<$  
UPA))Iv>  
public static interface Sort { BB>3Kj:|  
public void sort(int[] data); "EDn;l-Q  
} 3L/>=I{5  
OANn!nZ.  
public static void swap(int[] data, int i, int j) { fo^M`a!va0  
int temp = data; %BC*h}KGH  
data = data[j]; 79z(n[^  
data[j] = temp; +3!um  
}  0'%R@|  
} !zVuO*+  
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