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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。 uyNJN  
插入排序: <'[Ku;m  
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package org.rut.util.algorithm.support; z Bt`L,^  
:,kU#eZ$-  
import org.rut.util.algorithm.SortUtil; Vf 0fT?/K  
/** \C K(;J  
* @author treeroot JA)o@[l F  
* @since 2006-2-2 "#twY|wW  
* @version 1.0 Cqgk  
*/ %f(S'<DhC  
public class InsertSort implements SortUtil.Sort{ JzMZB"Z?  
pDq#8*q+v  
/* (non-Javadoc) #9`rXEz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (`6%og#8  
*/ B:-U`CHHQ  
public void sort(int[] data) { -@2'I++"@  
int temp; A)Qh  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Kej|1g1f  
} Y}LLOj@L  
} ~XUOWY75  
} uxO J3  
K 3Yw8t2J  
} $_C+4[R?  
URK!W?3c  
冒泡排序: rLJ[FqS  
&$qF4B*  
package org.rut.util.algorithm.support; \Mb(6~nC  
hCM8/Vvx6  
import org.rut.util.algorithm.SortUtil; j1YH9T#|D  
a@#Q:O)4  
/** ]U,CKJF%/  
* @author treeroot f xDj+Q1p  
* @since 2006-2-2 8xF)_UV  
* @version 1.0 qL| 5-(P  
*/ B6bOEPQ  
public class BubbleSort implements SortUtil.Sort{ H`m:X,6}  
oYz!O]j;a  
/* (non-Javadoc) TZ_rsj/t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x(PKFn  
*/ 3ai (x1%  
public void sort(int[] data) { QCOLC2I  
int temp; hH%,!tSx  
for(int i=0;i for(int j=data.length-1;j>i;j--){ -J,Q;tj  
if(data[j] SortUtil.swap(data,j,j-1); B0oxCc/'sZ  
} $PSY:Zz  
} TDlZ!$g(  
} e?V,fzg  
} ~G>jw"r  
TbLe6x  
} Q,.By&  
3;*z3;#}  
选择排序: ?7 #7:  
6b?`:$Cw3)  
package org.rut.util.algorithm.support; P:sAqvH6  
+z\\VD  
import org.rut.util.algorithm.SortUtil;  I>A^I  
]gu1#  
/** Q|Pbt(44  
* @author treeroot n]+.  
* @since 2006-2-2 ; XG]Q<S\  
* @version 1.0 BhKO_wQ?:J  
*/ L=,OZ9aA  
public class SelectionSort implements SortUtil.Sort { }YQ:6I  
&=6%>  
/* <cYp~e%xIw  
* (non-Javadoc) &hayR_F9  
* cd!|Ne>fe  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .nEs:yn  
*/ Is13:  
public void sort(int[] data) { 2H[ ; v+  
int temp; {Eu'v$c!  
for (int i = 0; i < data.length; i++) { T2wv0sHlt  
int lowIndex = i; %[w Tz$S"  
for (int j = data.length - 1; j > i; j--) { q7,^E`5EgU  
if (data[j] < data[lowIndex]) { <_9!  
lowIndex = j; s~^*+kq  
} td >,TW=A*  
} .Gh%p`<  
SortUtil.swap(data,i,lowIndex); lop uf/U0  
} B{p4G`$i1  
} yRC3 . [  
}W$8M>l  
} i\Yl  
{I{3(M#"  
Shell排序: d$K=c1  
I"1CgKYK^+  
package org.rut.util.algorithm.support; XA1f' Kk  
J A`H@qE  
import org.rut.util.algorithm.SortUtil; f&ytK  
FI{AZb_'  
/** HT"gT2U+  
* @author treeroot xW>ySEf  
* @since 2006-2-2 lkA^\ +Ct  
* @version 1.0 Cxm6TO`-;  
*/ xuU x4,Z  
public class ShellSort implements SortUtil.Sort{ S[mM4et|  
vZ@g@zB4o0  
/* (non-Javadoc) q#N R32byF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aG! *WHt  
*/ Ky kSFB  
public void sort(int[] data) { xc;DdK=1X  
for(int i=data.length/2;i>2;i/=2){ M)JADX  
for(int j=0;j insertSort(data,j,i); +I5 2EXo  
} Vl<9=f7[  
} ne4c %?>t  
insertSort(data,0,1); 4T`&Sl  
}  (#o t^  
!v9lk9SV  
/** O8lFx_N7Q  
* @param data )iU^&@[S  
* @param j FXahZW~Ol  
* @param i Uoj i@  
*/ s<vs:jna  
private void insertSort(int[] data, int start, int inc) { t`5j4bdG  
int temp; vXdZmYrC  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); X |b2c+I  
} Oz{%k#X-  
} KE.Dt  
} NZk&JND  
]JjK#eh  
} :l,OalO  
h^oH^moq<  
快速排序: #. ct5  
}ptMjT{9  
package org.rut.util.algorithm.support; .!RavEg+  
`~h4D(n`  
import org.rut.util.algorithm.SortUtil; #`ls)-`7  
_KN/@(+F  
/** m`6VKp{YD  
* @author treeroot [i7YVwG4  
* @since 2006-2-2 uWjU OJEe  
* @version 1.0  s;Y<BD  
*/ ^.go O]  
public class QuickSort implements SortUtil.Sort{ Izo!rC  
%NajFjBI  
/* (non-Javadoc) bik*ZC?E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >(3\k iYS  
*/ cp6WMHLj   
public void sort(int[] data) { >72JV; W]  
quickSort(data,0,data.length-1); 30Drrno7Io  
} dE5D3ze  
private void quickSort(int[] data,int i,int j){ >xg5z  
int pivotIndex=(i+j)/2; uzBz}<M=  
file://swap ?j{C*|yHO  
SortUtil.swap(data,pivotIndex,j); OBOwz4<  
T_;]fPajjD  
int k=partition(data,i-1,j,data[j]); WeMAe w/d  
SortUtil.swap(data,k,j); R7?29?$7  
if((k-i)>1) quickSort(data,i,k-1); |`O7nOM  
if((j-k)>1) quickSort(data,k+1,j); `rb>K  
4(cJ^]wb^  
} Z4hLdHo_  
/** B4g8 ~f  
* @param data s8<gK.atl  
* @param i 4w$_ ]ke  
* @param j (\,BxvhG=  
* @return osH Cg  
*/ 9}P"^N  
private int partition(int[] data, int l, int r,int pivot) { Gy"%R-j7  
do{ U BZ9A  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); >#(n"RCHf  
SortUtil.swap(data,l,r);  !HK^AwNY  
} u[oUCTY  
while(l SortUtil.swap(data,l,r); %Mn.e a  
return l; 1n=_y o  
} L":bI&V?:  
_P7tnXww  
} 1S:|3W  
SJ?)%[(T  
改进后的快速排序: #VGjCEeU  
b]Z@^<_E  
package org.rut.util.algorithm.support; aFj.i8+  
4n0xE[-  
import org.rut.util.algorithm.SortUtil; /)>S<X  
cYNV\b4-  
/** lr@#^  
* @author treeroot 8g~EL{'  
* @since 2006-2-2 q]% T:A=  
* @version 1.0 /rc%O*R  
*/ 1(#;&:$`i  
public class ImprovedQuickSort implements SortUtil.Sort { d 8o53a]  
-db75=  
private static int MAX_STACK_SIZE=4096; \3XqHf3|o  
private static int THRESHOLD=10; > m q,}!n  
/* (non-Javadoc) m D58T2 Z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jd-glE,Y/  
*/ K^[#]+nQ  
public void sort(int[] data) { {+.r5py  
int[] stack=new int[MAX_STACK_SIZE]; |L6&Gf]#5  
S:bC[}  
int top=-1; aelO3'UN  
int pivot; _5Bcwa/  
int pivotIndex,l,r; &^".2)zU  
O;9?(:_  
stack[++top]=0; )_7>nuQ6  
stack[++top]=data.length-1; u1^wDc*xg  
{QAv~S>4  
while(top>0){ 2 QTZwx  
int j=stack[top--]; wBSQ:f]g  
int i=stack[top--]; [bz T& o  
_BM4>r?\  
pivotIndex=(i+j)/2; f3MRD4+-  
pivot=data[pivotIndex]; BJ}D%nm}  
P9Q~r<7n  
SortUtil.swap(data,pivotIndex,j); !CTxVLl"F  
J([s5:.[  
file://partition Z|lU8`'5  
l=i-1; s1N?/>lmB  
r=j; t= #&fSR  
do{ =EP13J  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); K=::)/{P  
SortUtil.swap(data,l,r); 6xK[34~ 6  
} <Zb/  
while(l SortUtil.swap(data,l,r); H}}$V7]^),  
SortUtil.swap(data,l,j); *e>]~Z,  
7[#yu2  
if((l-i)>THRESHOLD){ A^\.Z4=d"  
stack[++top]=i; 4u;9J*r4  
stack[++top]=l-1; */qtzt  
} YIRZ+H<Q  
if((j-l)>THRESHOLD){ (N-RIk73/O  
stack[++top]=l+1; =uHnRY  
stack[++top]=j; }yn0IWVa  
} kRJ4-n^@><  
'9p@vi{\  
} eV^d6T$  
file://new InsertSort().sort(data); "r4AY  
insertSort(data); N2r/ho}8  
} uN*KHE+h  
/** ;bzX% f?|G  
* @param data 2F{hg%  
*/ gV;H6"  
private void insertSort(int[] data) { e}Vw!w  
int temp; B!]2Se2G  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /6uT6G+(z}  
} "I6P=]|b  
} /*FH:T<V  
} I=)hWC/  
2&mGT&HAVA  
} 6RO(]5wX  
C$h<Wt=<  
归并排序: 2j JmE&)7,  
tc ;'oMUP  
package org.rut.util.algorithm.support; JCx WWre  
+j_ ;(Gw7  
import org.rut.util.algorithm.SortUtil; |y;}zQB-dH  
)> ,wj  
/** d_UN0YT<  
* @author treeroot B(a-k?  
* @since 2006-2-2 v4,h&JLt  
* @version 1.0 ?lGG|9J\  
*/ -&x2&WE'  
public class MergeSort implements SortUtil.Sort{ 1/1Xk,E  
wcSyw2D  
/* (non-Javadoc) Bs+(L [Z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h` U?1xS  
*/ - O98pi  
public void sort(int[] data) { >2$5eI  
int[] temp=new int[data.length]; v,-{Z1N%m  
mergeSort(data,temp,0,data.length-1); G'2#9<c*  
} _/8FRkx  
:bV mgLgG  
private void mergeSort(int[] data,int[] temp,int l,int r){ EF7+ *Q9  
int mid=(l+r)/2; S1 Z2_V  
if(l==r) return ; kE>0M9EdH  
mergeSort(data,temp,l,mid); o./.Q9e7  
mergeSort(data,temp,mid+1,r); +y7;81ND  
for(int i=l;i<=r;i++){ 6*4's5>?D  
temp=data; 0]KraLu"N  
} Amr[wx  
int i1=l; T{wpJ"F5<]  
int i2=mid+1; n~"$^Vr  
for(int cur=l;cur<=r;cur++){ <?-YTY|  
if(i1==mid+1) w{[=l6L m  
data[cur]=temp[i2++]; 4%4avEa"w  
else if(i2>r) 2]GdD*  
data[cur]=temp[i1++]; 1_fZm+oW!  
else if(temp[i1] data[cur]=temp[i1++]; ;{ i'#rn{  
else 0nn okN^  
data[cur]=temp[i2++]; mpAR7AG6  
} W>r#RXmh  
} ?]fF3SJk  
2XTPBZNe  
} qPB8O1fyU  
tO7v4  
改进后的归并排序: LTNj| u  
3 !Sp0P  
package org.rut.util.algorithm.support; :q8b;*:  
3czeTj  
import org.rut.util.algorithm.SortUtil; [U}+sTQ  
[Vd[-  
/** *Do/+[Ae  
* @author treeroot ;Op3?_  
* @since 2006-2-2 +4[^!q* H  
* @version 1.0 s2?T5oWU  
*/  Q~R ~xz  
public class ImprovedMergeSort implements SortUtil.Sort { Q9I j\HbA"  
WLF0US'  
private static final int THRESHOLD = 10; 8^Hn"v  
}I 3gU  
/* G+B~Ix-  
* (non-Javadoc) M02uO`Y9  
* 4S~o-`&W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .s#;s'>g  
*/ ^~{$wVGa  
public void sort(int[] data) { \V9Z #>  
int[] temp=new int[data.length]; -.g|l\  
mergeSort(data,temp,0,data.length-1); NCxqh<  
} RoCfJ65  
hN['7:bQ  
private void mergeSort(int[] data, int[] temp, int l, int r) { R@Gq)P9?  
int i, j, k; &] \X]p  
int mid = (l + r) / 2; u0P)7~%  
if (l == r) .sQ=;w/ZA  
return; R[ 49(>7H4  
if ((mid - l) >= THRESHOLD) d,8mY/S>w  
mergeSort(data, temp, l, mid); e[sK@jX6  
else |F9z,cc"  
insertSort(data, l, mid - l + 1); v9Xp97J2  
if ((r - mid) > THRESHOLD) \Mg`(,kwe  
mergeSort(data, temp, mid + 1, r); ;'81jbh  
else f|y:vpd%  
insertSort(data, mid + 1, r - mid); J=pztASt  
i)#s.6.D>  
for (i = l; i <= mid; i++) { LL|7rS|o  
temp = data; ,J`'Y+7W  
} )c l5B{1P  
for (j = 1; j <= r - mid; j++) { Zy|Mz&  
temp[r - j + 1] = data[j + mid]; sp@E8G%xO  
} ,K:ll4{b  
int a = temp[l]; #gm)dRKm%  
int b = temp[r]; kId n6 Wx,  
for (i = l, j = r, k = l; k <= r; k++) { A AHt218  
if (a < b) { .uNQBBNv  
data[k] = temp[i++]; G_>#Js  
a = temp; _+ .\@{c  
} else { o)OUWGjb/K  
data[k] = temp[j--]; hJzxbr <  
b = temp[j]; 3!5Ur&  
} _fZZ_0\Q  
} Oy 2+b1{  
} b T 2a40ul  
FQ>`{%>  
/** bzdb|I6Z  
* @param data 0i8LWX_M  
* @param l ^ wY[3"{  
* @param i }K8/-d6  
*/ wvrrMGU)a  
private void insertSort(int[] data, int start, int len) { 7\ nf:.  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1);  9CCkqB/  
} )5|I_PXB  
} ='TE,et@d  
} 6sa"O89   
} 1heS*Fwn'  
"B_K XL  
堆排序: K \vSB~{ [  
['%69dPh  
package org.rut.util.algorithm.support; xoOJauSX1  
- Ij&  
import org.rut.util.algorithm.SortUtil; rHP%0f 9:  
&-5_f* {  
/** _-5,zP R  
* @author treeroot rp5(pV 7*  
* @since 2006-2-2  BUwONF  
* @version 1.0 PQ@L+],C  
*/ kNqH zo  
public class HeapSort implements SortUtil.Sort{ [o*7FEM|<  
4mn&4e  
/* (non-Javadoc) y>*xVK{D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S$2b>#@UJ  
*/ K(XN-D/c  
public void sort(int[] data) { 8u!"#S#>a  
MaxHeap h=new MaxHeap(); &YDK (&>  
h.init(data); JsO *1{6g  
for(int i=0;i h.remove(); "bDs2E+W  
System.arraycopy(h.queue,1,data,0,data.length); d&#~ h:~  
} >a3p >2  
V5U?F6  
private static class MaxHeap{ %%cHoprDa  
={hX}"*D  
void init(int[] data){ JoSJH35=:  
this.queue=new int[data.length+1]; OLI$1d_  
for(int i=0;i queue[++size]=data; eHDef  
fixUp(size); ^Q&u0;OJ  
} [b:e:P 2  
} :8A!HI}m{  
~q&pF"va8  
private int size=0; .'a&3 3J  
)]#aauC+  
private int[] queue; Z@Ae$ '9H  
5XLs} :  
public int get() { nk3y"ne7  
return queue[1]; *Sh^ J+j  
} xG;-bJu  
D/h/Y) Y  
public void remove() { Jjl`_X$CB  
SortUtil.swap(queue,1,size--); )Fb>8<%  
fixDown(1); 4[r/}/iGo  
} fr!Pj(Q1  
file://fixdown Py{ <bd  
private void fixDown(int k) { U\rh[0  
int j; y,pZTlE  
while ((j = k << 1) <= size) { N?X~w <  
if (j < size %26amp;%26amp; queue[j] j++; |pa$*/!NT  
if (queue[k]>queue[j]) file://不用交换 uytE^  
break; Et_V,s<|  
SortUtil.swap(queue,j,k); 0|; .6\  
k = j; K!,<7[MBg  
} U?.9D  
} ^fz+41lE\  
private void fixUp(int k) { @ |'5 n  
while (k > 1) { wW>)(&!F  
int j = k >> 1; w\}?(uO  
if (queue[j]>queue[k]) >[6{LAe~hp  
break; ?bw4~  
SortUtil.swap(queue,j,k); K R"M/#  
k = j; ~H6r.:]  
} _4cvX  
} <_(/X,kBK  
c)0amM  
} $wYFEz  
>hH0Q5aL  
} ,ZS6jZ  
!a$ D4(`v  
SortUtil: mXUYQ 82  
-Z-IF#%  
package org.rut.util.algorithm; B^%1Rpcn  
l]<L [Y,E-  
import org.rut.util.algorithm.support.BubbleSort; moVbw`T  
import org.rut.util.algorithm.support.HeapSort; 81*M= ?  
import org.rut.util.algorithm.support.ImprovedMergeSort; ~SvC[+t+U  
import org.rut.util.algorithm.support.ImprovedQuickSort; 5Zw1y@k(  
import org.rut.util.algorithm.support.InsertSort; }K hjlPhx  
import org.rut.util.algorithm.support.MergeSort; -uh(?])H  
import org.rut.util.algorithm.support.QuickSort; OIl#DV.  
import org.rut.util.algorithm.support.SelectionSort; ;+1RU v  
import org.rut.util.algorithm.support.ShellSort; jgS%1/&  
c]B$i*t  
/** !`bio cA  
* @author treeroot ,7XtH>2s  
* @since 2006-2-2 SR*wvQnOx  
* @version 1.0 ?|e'Gbb_  
*/ (Z5##dS3  
public class SortUtil { @E.k/G!~Nb  
public final static int INSERT = 1; 1 y}2+Kk  
public final static int BUBBLE = 2; Z!0]/mCE8  
public final static int SELECTION = 3; "7>>I D  
public final static int SHELL = 4; ET];%~ ^  
public final static int QUICK = 5; &uUo3qXQ5l  
public final static int IMPROVED_QUICK = 6; >yJ9U,Y  
public final static int MERGE = 7; dz>;<&2Z  
public final static int IMPROVED_MERGE = 8; a}SdW  
public final static int HEAP = 9; PA w-6;  
`"@X.}\  
public static void sort(int[] data) { m`6Yc:@E  
sort(data, IMPROVED_QUICK); W(RF n`g\  
}  Xtq{%  
private static String[] name={ ?X?&~3iD%  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" (6v (9p  
}; Yl;^ k0ZI  
(Toq^+`c  
private static Sort[] impl=new Sort[]{ e"r)R8  
new InsertSort(), `]Bxn) b(  
new BubbleSort(), D|qk_2R%  
new SelectionSort(), Z`3ufXPNlO  
new ShellSort(), 1{_A:<VBl  
new QuickSort(), HyiF y7j  
new ImprovedQuickSort(), .}')f;jH5<  
new MergeSort(), !se0F.K  
new ImprovedMergeSort(), W0jZOP5_.$  
new HeapSort() 7kKy\W  
}; L}#0I+Ml7  
0N=X74  
public static String toString(int algorithm){ Nx#4W1B[`H  
return name[algorithm-1]; YC]L)eafo`  
} H;aYiy  
N)% ;jh:T  
public static void sort(int[] data, int algorithm) { yk2!8  
impl[algorithm-1].sort(data); 97!>%d[0  
} z'p:gv]  
Da$r`  
public static interface Sort {  g/UaYCjM  
public void sort(int[] data); Y,8KPg@W  
} P\CDd=yWc  
)Z+{|^`kJ  
public static void swap(int[] data, int i, int j) { 2}?wYI*:5|  
int temp = data; l:]Nn%U(>  
data = data[j];  QH]M   
data[j] = temp; .ut{,(5  
} 6I_Hd>4  
} ^BZkHAp  
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3+5=?,请输入中文答案:八 正确答案:八