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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。 |~/3u/  
插入排序: aR="5{en{:  
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package org.rut.util.algorithm.support; OUlxeo/  
mJGO)u&  
import org.rut.util.algorithm.SortUtil; d739UhKC  
/** CzzUi]*Ac{  
* @author treeroot /^z/]!JG:V  
* @since 2006-2-2 Eo7 _v  
* @version 1.0 zH=/.31Q  
*/ FhY{;-W(T  
public class InsertSort implements SortUtil.Sort{ uGuc._}=  
nxn[ ~~  
/* (non-Javadoc) *c~'0|r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b[{m>Fa+o#  
*/ G_2gKkIK-  
public void sort(int[] data) { ;I!+ lx3[  
int temp; -(/2_&"  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Edf=?K+\!i  
} z`86-Ov  
} bK_0NrXP  
} m{:"1]  
7X9+Qj;  
} aWHd}%  
gD,YQ%aq  
冒泡排序: hb /8Q  
2cs?("8e%  
package org.rut.util.algorithm.support; 4cXAT9  
_SMT.lG  
import org.rut.util.algorithm.SortUtil; QmWC2$b  
 ESC  
/** K:>NGGY8r  
* @author treeroot (ZE%tbm2  
* @since 2006-2-2 jsk:fh0~M  
* @version 1.0 ;x!,g5q"q  
*/ vO}qjw  
public class BubbleSort implements SortUtil.Sort{ pTa'.m  
!7:EE,W~  
/* (non-Javadoc) ^Ei*M0fF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 652uZ};e  
*/ MAuM)8_P/|  
public void sort(int[] data) { 'sm[CNzS  
int temp; k9*J*7l-m  
for(int i=0;i for(int j=data.length-1;j>i;j--){ L"""\5Bn(  
if(data[j] SortUtil.swap(data,j,j-1); QE7+rBa  
} g>6:CG"  
} 6obQ9L c  
} E p^B,;~  
} /`7 IK  
~fyF&+ibp'  
} +G5'kYzJ  
C!$Xv&"r  
选择排序: > [Xm|A#  
a='IT 5  
package org.rut.util.algorithm.support; Q;XXgX#l  
b*lKT]D,  
import org.rut.util.algorithm.SortUtil;  C#A@)>  
&E.OyqGZV  
/** +<)tql*  
* @author treeroot 1zdYBb6;j  
* @since 2006-2-2 1k!D0f3qb  
* @version 1.0 f2uZK!:m  
*/ -6u H.  
public class SelectionSort implements SortUtil.Sort { NY~ dM\  
'jh2**i 34  
/* n (OjjR m  
* (non-Javadoc) EwTS!gL  
* RM)1*l`!E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~&lQNl3`m6  
*/ \z2vV +f  
public void sort(int[] data) { u=(H#o<#  
int temp; V %i<;C  
for (int i = 0; i < data.length; i++) { }j& O/ Up  
int lowIndex = i; dz8-):  
for (int j = data.length - 1; j > i; j--) {  UP\8w#~  
if (data[j] < data[lowIndex]) { j1'\R+4U  
lowIndex = j; G"}qV%"6"  
} !.9l4@z#  
} #o"tMh!f  
SortUtil.swap(data,i,lowIndex); ;_x2 Ymw  
} wUbmzP.  
} .8-PB*vb  
j6`6+W=S(  
} %wOOzp`  
C,[ L/!  
Shell排序: 4"LPJX)Q  
X>2? `8M  
package org.rut.util.algorithm.support; fv:L\N1u  
i"/r)>"b  
import org.rut.util.algorithm.SortUtil; A8J?A#R*{q  
\{kHSV%z  
/** TV? ^c?{5  
* @author treeroot cS4xe(n8  
* @since 2006-2-2 t/A:k  
* @version 1.0 GX7VlI[  
*/ AD(xaQ&T  
public class ShellSort implements SortUtil.Sort{ !5NGlqEF#  
xOhRTxic  
/* (non-Javadoc) D4d]3|/T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %@>YNPD`E  
*/ yz2(_@R  
public void sort(int[] data) { ohtT O]\  
for(int i=data.length/2;i>2;i/=2){ X!o@f$  
for(int j=0;j insertSort(data,j,i); ?b5H 2 W  
} v Xc!Zg~  
} wI*Y{J  
insertSort(data,0,1); *jGPGnSo  
} :sFo  
4AJ9`1d4  
/** .6LS+[  
* @param data hRk,vB ]  
* @param j 8*vFdoE_oO  
* @param i R!9qQn?  
*/ t~q?lT  
private void insertSort(int[] data, int start, int inc) { ATo}FL 2  
int temp; n7@j}Q(&?  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); <H!O:Mf_p  
} Bf/ |{@  
} m!;G/s*  
} ::ri3Tu  
z[*zuo  
} wBLsz/  
ssPI$IRg!  
快速排序: ZxI]I1)  
yk`)Cq%=;  
package org.rut.util.algorithm.support; `6UtxJSx  
[Q|M/|mnR1  
import org.rut.util.algorithm.SortUtil; {|Bd?U;  
>C:If0S4X  
/** Q]^Yi1PbS  
* @author treeroot u"\=^F  
* @since 2006-2-2 9]Lo  
* @version 1.0 /;7ID41  
*/ v O PMgEI  
public class QuickSort implements SortUtil.Sort{ 2?*||c==*  
(ZS/@He  
/* (non-Javadoc) 1EQvcw #  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UUGe"]V^g:  
*/ C>NQ-w^  
public void sort(int[] data) { 8sH50jeP  
quickSort(data,0,data.length-1); ~oo'ky*H!  
} ZOC#i i`:  
private void quickSort(int[] data,int i,int j){ ZzT&$J7]`{  
int pivotIndex=(i+j)/2; 22|"K**3J|  
file://swap XO%~6Us^  
SortUtil.swap(data,pivotIndex,j); B2Qp}  
%OEq,Tb  
int k=partition(data,i-1,j,data[j]); b#A(*a_gN  
SortUtil.swap(data,k,j); fQP,=  
if((k-i)>1) quickSort(data,i,k-1); ]H>+m 9  
if((j-k)>1) quickSort(data,k+1,j); _=?2 3  
r,Ds[s)B  
} qrpb[)Ll  
/** bb}?h]a   
* @param data Oi6Eo~\f  
* @param i l^ Rm0t_  
* @param j JdO)YlM-  
* @return X5 j=C]  
*/ /z#F,NB  
private int partition(int[] data, int l, int r,int pivot) { x^X$M$o,l  
do{ 4T%cTH:.9N  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); l=xt;c!  
SortUtil.swap(data,l,r); X>{p}vtvf>  
} R3Ee%0QK  
while(l SortUtil.swap(data,l,r); K?[)E3  
return l; ]Z/R!y?l"G  
} Nq_A8Ph9  
nc&Jmo7  
} +YuzpuxjJ  
7OE[RX8!f  
改进后的快速排序: @iRO7 6m  
ogJ<e_ m  
package org.rut.util.algorithm.support; #52NsVaT@  
IkU|W3Vo  
import org.rut.util.algorithm.SortUtil; D'n L  
Z}+yI,  
/** 4\HsU9x  
* @author treeroot 9ad6uTc  
* @since 2006-2-2 "$DldHC  
* @version 1.0 'bPk'pj9  
*/ @mNJ=mEV  
public class ImprovedQuickSort implements SortUtil.Sort { +9C;<f  
ED/FlL{  
private static int MAX_STACK_SIZE=4096; 8 URj1 W  
private static int THRESHOLD=10; 79wLT \&  
/* (non-Javadoc) !UcOl0"6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vK:QX$b  
*/  NpR6  
public void sort(int[] data) { ]4o?BkL  
int[] stack=new int[MAX_STACK_SIZE]; "wINBya'M  
qv uxhzF  
int top=-1; > H~6NBd5D  
int pivot; `iQqhx  
int pivotIndex,l,r; )!sa)\E?  
(Q_2ODKo  
stack[++top]=0; N Bz%(? \  
stack[++top]=data.length-1; :".w{0l@  
(u9Zk~)F  
while(top>0){ #w*"qn#2Uz  
int j=stack[top--]; fI]bzv;  
int i=stack[top--]; Egf^H>,.M  
fGTOIi@#  
pivotIndex=(i+j)/2; UJn/s;$.e  
pivot=data[pivotIndex]; nvH|Ngg Q  
/WYh[XKe  
SortUtil.swap(data,pivotIndex,j); "Yb y  
0m&3?"5u  
file://partition {(Fe7,.S3  
l=i-1; W+hV9  
r=j; ;RHNRVP  
do{ F~R7~ZE  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); {cR3.%wX  
SortUtil.swap(data,l,r); u(2BQO7  
} H#Q;"r3  
while(l SortUtil.swap(data,l,r); .Q[yD<)Ubs  
SortUtil.swap(data,l,j); tN2 W8d  
?wCs&tM  
if((l-i)>THRESHOLD){ 9^\hmpP@D  
stack[++top]=i; ~!] m6/  
stack[++top]=l-1; 'HB~Dbq`V  
} ~-<:+9m  
if((j-l)>THRESHOLD){ #8UseK  
stack[++top]=l+1; s#P:6]Ar  
stack[++top]=j; ET+'Pj3  
} tT-=hDw  
@n@g)`  
} P^zy;Qs7  
file://new InsertSort().sort(data); O^NP0E  
insertSort(data); /buWAX 1  
} aDveU)]=1  
/** u>o<tw%Y  
* @param data c,$mWTC  
*/ f[}|rf  
private void insertSort(int[] data) { G#lg|# -#  
int temp; Nb1J ~v  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); O9e.=l  
} Kj!Y K~~  
} #_fY4vEO  
} OZT^\Ky_l  
m^A]+G#/  
} i~8DSshA  
MS{{R +&  
归并排序: ?4sJw:  
J7n5Ps\M  
package org.rut.util.algorithm.support; N7pt:G2~%  
PG"@A  
import org.rut.util.algorithm.SortUtil; QnU0"_-  
kwF]TO S  
/** qHJ'1~?q  
* @author treeroot = t-fYV  
* @since 2006-2-2 x.\XUJ4x  
* @version 1.0 oLP]N$'#  
*/ : I)Gv  
public class MergeSort implements SortUtil.Sort{ :x+ig5  
9GPb$ gtx  
/* (non-Javadoc) p%8 v`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J#(,0h  
*/ qguVaV4Y  
public void sort(int[] data) { Z(UD9wY5m  
int[] temp=new int[data.length]; tN}c0'H  
mergeSort(data,temp,0,data.length-1); G4m4k  
} A8!Ed$@  
=)*JbwQ   
private void mergeSort(int[] data,int[] temp,int l,int r){ k(v"B@0  
int mid=(l+r)/2; %A2`&:ip  
if(l==r) return ; eJ:Yj ~X`<  
mergeSort(data,temp,l,mid); /x/4NeD  
mergeSort(data,temp,mid+1,r); oAnigu;  
for(int i=l;i<=r;i++){ Y-]YDXrPQ  
temp=data; ?@3&dk~ni  
} DM'qNgB7  
int i1=l; J | q^+K  
int i2=mid+1; M5 `m.n<  
for(int cur=l;cur<=r;cur++){ gY%&IHQ'  
if(i1==mid+1) xx0k$Dqt2I  
data[cur]=temp[i2++]; ~v\hIm3=m  
else if(i2>r) 3&9zGy{V+  
data[cur]=temp[i1++]; pw;r 25   
else if(temp[i1] data[cur]=temp[i1++]; B0"0_n7-  
else :o l6%Z's  
data[cur]=temp[i2++]; _25d%Ne0  
} VY_f =  
} ArL-rJ{}  
RF!'K ko  
} tIp{},bQ^  
e2bLkb3c  
改进后的归并排序: ?UJSxL  
Q]T BQ&  
package org.rut.util.algorithm.support; n. I2$._(b  
J[6VBM.Y  
import org.rut.util.algorithm.SortUtil; Ph Ttx(!  
0+|>-b/%  
/** AI~9m-,mE  
* @author treeroot *(p7NYf1  
* @since 2006-2-2 ke^d8Z.  
* @version 1.0 q- H&5K  
*/ yYk|YX(7U  
public class ImprovedMergeSort implements SortUtil.Sort { w#<p^CS  
'{CWanTPi  
private static final int THRESHOLD = 10; .8x@IWJD  
m\?\6W k  
/* fzyzuS$  
* (non-Javadoc) k{1b20  
* R|-j]Ne  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^6#-yDZC@  
*/ L W?&a3e  
public void sort(int[] data) { /L$NE$D} "  
int[] temp=new int[data.length]; !")WZq^`  
mergeSort(data,temp,0,data.length-1); vU{jda$$#  
} VRB~7\A5<)  
716hpj#*  
private void mergeSort(int[] data, int[] temp, int l, int r) { RJLFj  
int i, j, k; Y6a$gXRT  
int mid = (l + r) / 2; Op90NZI#K  
if (l == r) E)Srj~$d  
return; YLigP"*~^  
if ((mid - l) >= THRESHOLD) .5N Zf4:C  
mergeSort(data, temp, l, mid); &#Wkww&Y  
else /xJY7yF  
insertSort(data, l, mid - l + 1); $^ubo5%  
if ((r - mid) > THRESHOLD) YMK>+y[+4  
mergeSort(data, temp, mid + 1, r); "d2LyQy  
else YY\Rua/nG  
insertSort(data, mid + 1, r - mid); VD9J}bgJ  
#]igB9Cf)w  
for (i = l; i <= mid; i++) { $M-NR||k  
temp = data; T*8_FR<  
} ZRUh/<\[  
for (j = 1; j <= r - mid; j++) { ?N(u4atC  
temp[r - j + 1] = data[j + mid]; Y6+k9$h  
} o3fR3P%$  
int a = temp[l]; BjN{@ aEO  
int b = temp[r]; ThbP;CzI#  
for (i = l, j = r, k = l; k <= r; k++) { lR, G;  
if (a < b) { wD}EW  
data[k] = temp[i++]; #c :9 V2  
a = temp; 9wzg{4/-$  
} else { +H[Q~P8'[  
data[k] = temp[j--]; Y5Ft96o))x  
b = temp[j]; > e;]mU`,  
} sBbL~ce50?  
} 8.PXTOhVL  
}  H RWZ0 '  
o%$<LaQG5  
/** n|J.)E.  
* @param data cj`#Tg.  
* @param l HK^a:BI  
* @param i #DrZ`Aq  
*/ t&8<k+m  
private void insertSort(int[] data, int start, int len) { #wGQv  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); xu`d`!Tx  
} N"&$b_u[  
} t7sUtmq  
} _T_PX$B  
} 2lX[hFa5  
>aX:gN  
堆排序: 3x,Aczb  
#/\pUK~km  
package org.rut.util.algorithm.support; O7! fI'R  
Xqc'R5C w  
import org.rut.util.algorithm.SortUtil; S83]O!w0  
Jii?r*"d  
/** R (t!xf  
* @author treeroot Q9Q!9B @  
* @since 2006-2-2 'O!Z:-qE  
* @version 1.0 V< 2IIH5^  
*/ QJ[(Y@ O6a  
public class HeapSort implements SortUtil.Sort{ _G_ &Me0  
0G+L1a-  
/* (non-Javadoc) c _R)P,P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L3-<Kop  
*/ 50}.Xm@,BO  
public void sort(int[] data) { p,3go[9X:R  
MaxHeap h=new MaxHeap(); ^yzo!`)fso  
h.init(data); !"Z."fm*  
for(int i=0;i h.remove(); ex0 kb  
System.arraycopy(h.queue,1,data,0,data.length); ~gSF@tz@  
} uzat."`d'  
H>gWxJ 5  
private static class MaxHeap{ KIXwx98  
6,CU)-98G  
void init(int[] data){ Fh*q]1F  
this.queue=new int[data.length+1]; ux" D ]P  
for(int i=0;i queue[++size]=data; Ek gZxT_&  
fixUp(size); P_:?}h\  
} c,b`N0dOKL  
} bxPY'&  
;EE{ ~  
private int size=0; #QJ4o_  
=B3!jir  
private int[] queue; $1Q3Y'Q9  
)]0[`iLe  
public int get() { 'l0eo' K  
return queue[1]; M]%!n3Fb  
} Bd N{[2  
0+VncL)u  
public void remove() { (;Dn%kK  
SortUtil.swap(queue,1,size--); OuYE-x2]x"  
fixDown(1); ;T"m [D  
} `uaD.m$EJ  
file://fixdown os "[Iji  
private void fixDown(int k) { `-9*@_ -=M  
int j; 0pZ.; /<{  
while ((j = k << 1) <= size) { g 'd*TBnk  
if (j < size %26amp;%26amp; queue[j] j++; .:r2BgL  
if (queue[k]>queue[j]) file://不用交换 cLN[o8 ZU  
break; Qw{\sCH>  
SortUtil.swap(queue,j,k); .SRuyioF&  
k = j; a|] %/[G@  
} OyG_thX  
} toYg$IV  
private void fixUp(int k) {  q~:'R  
while (k > 1) { ;/hH=IT  
int j = k >> 1; ~ (l2%(3G  
if (queue[j]>queue[k]) O>o}<t7  
break; c9cphZ(z  
SortUtil.swap(queue,j,k); ;s!ns N  
k = j; J _[e9  
} ; ei<Q =[  
} >X\s[d&(  
|=h)efo}  
} #P,[fgNy  
dWq/)%@t  
} R>YMGUH~w  
7}iewtdy,  
SortUtil: 4 L~;>]7  
6{Cu~G{]N  
package org.rut.util.algorithm; kgbr+Yw2X  
I W] 841  
import org.rut.util.algorithm.support.BubbleSort; '@}?NV0  
import org.rut.util.algorithm.support.HeapSort; -XDP-Trk  
import org.rut.util.algorithm.support.ImprovedMergeSort; Ymk4Cu.s  
import org.rut.util.algorithm.support.ImprovedQuickSort; .xc/2:m9  
import org.rut.util.algorithm.support.InsertSort; 61Iy{-/ZV  
import org.rut.util.algorithm.support.MergeSort; ~jRk10T(B  
import org.rut.util.algorithm.support.QuickSort; @qr3v>3X<  
import org.rut.util.algorithm.support.SelectionSort; nm:let7GB  
import org.rut.util.algorithm.support.ShellSort; Ow .)h(y/  
+<9q]V  
/** ]Buk9LTe  
* @author treeroot ,h(f\h(9  
* @since 2006-2-2 MIXrLh3  
* @version 1.0 J^+$L"K  
*/ C&s }m0R  
public class SortUtil { Qig!NgOM  
public final static int INSERT = 1; HV.|Eh_7  
public final static int BUBBLE = 2; w2C!>fJ]1  
public final static int SELECTION = 3; id[>!fQ=Y  
public final static int SHELL = 4; 1n5e^'z  
public final static int QUICK = 5; !y2h`ZAZ  
public final static int IMPROVED_QUICK = 6; r|H!s,  
public final static int MERGE = 7; 4Uy>#IL  
public final static int IMPROVED_MERGE = 8; &+w!'LSaD  
public final static int HEAP = 9; 3=L1HZH  
q$2taG}  
public static void sort(int[] data) { WSB|-Qj}W  
sort(data, IMPROVED_QUICK); b Ho?Rw!.  
} nKa ;FaJ  
private static String[] name={ ~\s &]L  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" #uw*8&%0  
}; rM~IF+f0XD  
uY%3X/^j  
private static Sort[] impl=new Sort[]{ ^~1@HcJo  
new InsertSort(), qA_DQ):  
new BubbleSort(), }lvP|6Y: y  
new SelectionSort(), WxP4{T* <  
new ShellSort(), 4}YT@={g}  
new QuickSort(), :IKp7BS  
new ImprovedQuickSort(), *CD=cmdD*  
new MergeSort(), %fSk "%u%<  
new ImprovedMergeSort(), n\)f.}YD8d  
new HeapSort() !I+u/f?TO7  
}; McI4oD~"  
]{,=mOk  
public static String toString(int algorithm){ OZ]3OL,  
return name[algorithm-1]; s#Y7*?Sm  
} S5 oHe4#89  
x=r6vOj  
public static void sort(int[] data, int algorithm) { `2U/O .rV  
impl[algorithm-1].sort(data); ~#x!N=q  
} `2~Ea_Z  
G uI sM  
public static interface Sort { bL#TR;*]  
public void sort(int[] data); E|}Nj}(*  
} .4)P=*  
WW/m /+  
public static void swap(int[] data, int i, int j) { }pZnWK+  
int temp = data; VrL>0d&d  
data = data[j];  2x J5  
data[j] = temp; ]6 7wk  
} g}j>;T  
} qO'5*d;!d  
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3+5=?,请输入中文答案:八 正确答案:八