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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。 &d$~6'x*  
插入排序: @ Gjny BJ  
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package org.rut.util.algorithm.support; :.IN?X  
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import org.rut.util.algorithm.SortUtil; 9zKBO* p`  
/** O+ .*lo  
* @author treeroot QocQowz  
* @since 2006-2-2 D$Kea  
* @version 1.0 W3pQ?  
*/ H/cTJ9zz  
public class InsertSort implements SortUtil.Sort{ h_ ! >yK  
|'hLa  
/* (non-Javadoc) jMpa?Jp1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SN]LeXesS  
*/ ,jh~;, w2  
public void sort(int[] data) { *v #/Y9}  
int temp; i+(GNcg2  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Dm{Ok#@r2  
} T |"`8mG  
} )+~E8yK  
} 9Vh_[^bR  
.)PqN s:  
} CvTwBJy1  
`^8*<+  
冒泡排序: |XcH]7Ai"  
l)@:T|)c  
package org.rut.util.algorithm.support; hLuJWjCV  
yFeeG3 n3  
import org.rut.util.algorithm.SortUtil; $p6N|p  
Gt^d;7x]  
/** pt!'v$G/*  
* @author treeroot 3IyZunFT  
* @since 2006-2-2 Pz~q%J  
* @version 1.0 pC^[[5A  
*/ Cd~LsdKE5  
public class BubbleSort implements SortUtil.Sort{ v}`1)BUeF  
9m!7|(QV  
/* (non-Javadoc) |cTpw1%I~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9O;vUy)  
*/ G=$}5; t  
public void sort(int[] data) { 3V-6)V{KaE  
int temp; cf*zejbw  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 9)ea.Gu  
if(data[j] SortUtil.swap(data,j,j-1); <aVfJd/fT  
} k=uZ=tUft*  
} sv=^k(d3  
} B_~jA%0m'  
} P4%>k6X  
f-+.;`H)T  
} 1X:&* a"5  
h3 @s2 fK  
选择排序: p{C9`wi)  
zD_H yGf  
package org.rut.util.algorithm.support; =~,l4g\  
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import org.rut.util.algorithm.SortUtil; 5faj;I{%JY  
ZLJNw0!=|t  
/** qY}Cg0[@g  
* @author treeroot JK^[{1 JI  
* @since 2006-2-2 Kq7C0)23  
* @version 1.0 $^$ECDOTB  
*/ HDj$"pS  
public class SelectionSort implements SortUtil.Sort { U"x~Jb3]O  
-3k;u  
/* )>$^wT  
* (non-Javadoc) ,>S+-L8  
* b;{h?xc6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RZ6~c{  
*/ Hja^edLj  
public void sort(int[] data) { ay[ZsQC  
int temp; cHEz{'1m  
for (int i = 0; i < data.length; i++) { ,wT g$ g-$  
int lowIndex = i; B/_6Ieb+  
for (int j = data.length - 1; j > i; j--) { EIK*49b2  
if (data[j] < data[lowIndex]) { 6+ANAk  
lowIndex = j; 1 PIzV:L\  
} wT% "5:  
} A;t zRe  
SortUtil.swap(data,i,lowIndex); }} #be  
} xN "wF-s4?  
} `oPLl0  
aH^{Vv$]M@  
} tQf!|]#J  
j@SYXKL~  
Shell排序: 4tnjXP8  
;_p fwa4  
package org.rut.util.algorithm.support; bqNLkw#  
%O_t`wz  
import org.rut.util.algorithm.SortUtil; &%:*\_2s  
_/ Tlqzp  
/** 9 P~d:'Ib  
* @author treeroot PvuAg(?  
* @since 2006-2-2 *k [kV  
* @version 1.0 _Z.;u0Zp8  
*/ khS/'b  
public class ShellSort implements SortUtil.Sort{ /x O{ .dr  
Vku#;:yUb^  
/* (non-Javadoc) Un\Ubqi0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \gP. \  
*/ /pU|ZA.z'2  
public void sort(int[] data) { d}VALjXHX!  
for(int i=data.length/2;i>2;i/=2){ t .L4%1OF  
for(int j=0;j insertSort(data,j,i); DA=qeVBg  
} &58 {  
} V0S6M^\DK  
insertSort(data,0,1); Z !Z,M' "  
} F`3^wHw^  
QSv^l-<  
/** lT3|D?sF  
* @param data 5Abz 5-^KH  
* @param j l\Cu1r-z  
* @param i /khnl9~+  
*/ uYabJqV  
private void insertSort(int[] data, int start, int inc) { ]'6'<S  
int temp; K7S754m  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); O&52o]k5l  
} d[" x= [f  
} ]qMH=>pOsj  
} )*Vj3Jx  
Tfr`?:yF  
} \d ui`F"Cc  
unJ iE!  
快速排序: |[DV\23{G  
)kF2HF  
package org.rut.util.algorithm.support; pqOA/^ar  
nrF!;:x  
import org.rut.util.algorithm.SortUtil; D|[/>x  
rI *!"PL  
/** 5'62ulwMP=  
* @author treeroot ,5=kDw2  
* @since 2006-2-2 e7lo!( >#  
* @version 1.0 Yu1QcFuy  
*/ @OY1`Eu O  
public class QuickSort implements SortUtil.Sort{ V*>73I  
xl|ghjn  
/* (non-Javadoc) $\0TD7p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A%P 8c  
*/ \4/:^T}*  
public void sort(int[] data) { <3)|44.o&  
quickSort(data,0,data.length-1); k+f1sV[4}  
} t[/\KG8  
private void quickSort(int[] data,int i,int j){ 2'|XtSj  
int pivotIndex=(i+j)/2; ,YQ=Zk)w  
file://swap IL2e6b  
SortUtil.swap(data,pivotIndex,j); wG;}TxrLS  
XNKtL]U}$  
int k=partition(data,i-1,j,data[j]); g(KK9Unu  
SortUtil.swap(data,k,j); n}VbdxlN  
if((k-i)>1) quickSort(data,i,k-1); ~37R0`C  
if((j-k)>1) quickSort(data,k+1,j); 48H5_9>:  
loR,XW7z  
} >G<4R o"  
/** f_~}X#._  
* @param data LgO i3  
* @param i J1nXAh)J  
* @param j ?<Z)*CF)  
* @return A\Lr<{Jh  
*/ H]VsOr  
private int partition(int[] data, int l, int r,int pivot) { V/@[%w=  
do{ SgyqmYTvZw  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); D7EXqo  
SortUtil.swap(data,l,r); ~Ry $>n*/  
} 0BT;"B1  
while(l SortUtil.swap(data,l,r); )o86lH"z  
return l; sWp{Y.  
} f%vHx,  
=_K%$y*  
} "L ^TT2  
0W;q!H[G  
改进后的快速排序: 1d=0q?nH  
j~X j  
package org.rut.util.algorithm.support; 6.k^m&-A  
qw6EPC  
import org.rut.util.algorithm.SortUtil; UIO6|*ka  
7ytm .lU  
/** .L~fFns/  
* @author treeroot aIQrb  
* @since 2006-2-2 !1D%-=dWX  
* @version 1.0 A$%@fO.b  
*/ ] ,!\IqO  
public class ImprovedQuickSort implements SortUtil.Sort { j@%K*Gb`  
A"Tc^Ij  
private static int MAX_STACK_SIZE=4096; &*X3c h  
private static int THRESHOLD=10; (PRaiE  
/* (non-Javadoc) s4!|v`+$M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H?rSP0.  
*/ cZPbD;e:  
public void sort(int[] data) { 1-4   
int[] stack=new int[MAX_STACK_SIZE]; Q,OkO?uY  
ztRWIkI q  
int top=-1; rd|@*^k  
int pivot; %{N>c:2I$  
int pivotIndex,l,r; Rh!L'? C  
L+v8E/W  
stack[++top]=0; xmCm3ekmpC  
stack[++top]=data.length-1; $ iX^p4v  
U;x99Go:  
while(top>0){ Z)C:]}Ex  
int j=stack[top--]; HY*l4QK  
int i=stack[top--]; *=($r%)  
~5-~q0Ge  
pivotIndex=(i+j)/2; SS >:Sw  
pivot=data[pivotIndex]; h<PYE]?l  
]s1TJw [B  
SortUtil.swap(data,pivotIndex,j); 4U}.Skzq  
{Bav$kw;?e  
file://partition m~Lf^gbG?  
l=i-1; J`U$b+q6  
r=j; =g{_^^n  
do{ 4v rm&k  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); #R~">g:w  
SortUtil.swap(data,l,r); S/#) :,YS  
} MAsWds`bpB  
while(l SortUtil.swap(data,l,r); u.ULS3`C/X  
SortUtil.swap(data,l,j); k+W  
sg'Y4  
if((l-i)>THRESHOLD){ >=.ch5h3J)  
stack[++top]=i; ?K= gg<  
stack[++top]=l-1; GM34-GH+  
} ~EM#Hc,  
if((j-l)>THRESHOLD){ =Bcux8wA#6  
stack[++top]=l+1; jldcvW  
stack[++top]=j; gJWlWVeq$  
} Mq rt-VPh  
(H|%?F;{l  
} >=Rd3dgDG  
file://new InsertSort().sort(data); bAA'=z<  
insertSort(data); d +*T@k]>M  
} ;j[q?^ b  
/** *so6]+)cU  
* @param data Xm_Ub>N5  
*/ -ucz+{  
private void insertSort(int[] data) { *~\;&G29Y  
int temp; @LwVmR |{  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); bTA14&& q  
} $6 Q2)^LJ  
} Z7K!"I  
} ^*$WZMMJ1  
NKIkd  
} 'ugR!o1  
BP7<^`i&  
归并排序: ~|$) 1  
\kua9bK  
package org.rut.util.algorithm.support; ijR-?nrR  
zD#+[XI]K  
import org.rut.util.algorithm.SortUtil; XY$cx~  
=6"hj,[Q  
/** ynOc~TN  
* @author treeroot )VSGqYr#  
* @since 2006-2-2 _zVbqRHlw  
* @version 1.0 3!ajvSOI9j  
*/ bOnukbJ  
public class MergeSort implements SortUtil.Sort{ DI2S %N l  
qqO10~Xc  
/* (non-Javadoc) 8&`T<ECq>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v]d?6g  
*/ A7I8Z6&  
public void sort(int[] data) { 7@e[:>e  
int[] temp=new int[data.length]; U3VsMV*Y  
mergeSort(data,temp,0,data.length-1); j3V"d3)  
} R[ +]d|L  
Vt$ $ceu  
private void mergeSort(int[] data,int[] temp,int l,int r){ T8M[eSbZ  
int mid=(l+r)/2; W+-f `  
if(l==r) return ; mtHi9).,y|  
mergeSort(data,temp,l,mid); 0zq\ j  
mergeSort(data,temp,mid+1,r); hH|XtQ.n^  
for(int i=l;i<=r;i++){ s]V{}bY`  
temp=data; s>"WQ|;6  
} <)0LwkFtB  
int i1=l; 4^jZv$l5  
int i2=mid+1; O7L6Htya  
for(int cur=l;cur<=r;cur++){ XQJV.SVS  
if(i1==mid+1) =^".{h'-  
data[cur]=temp[i2++]; ^HU=E@  
else if(i2>r) m-pIFL<^N  
data[cur]=temp[i1++];  # 8-P  
else if(temp[i1] data[cur]=temp[i1++]; 6=[ PJM  
else KlSY^(kHR  
data[cur]=temp[i2++]; swe8  
} @% 5F^Vbd  
} @)M.u3{\  
%Tm' aY"  
} X~/ 9Vd g  
}~0{1&  
改进后的归并排序: [;kj,j  
!UPAEA  
package org.rut.util.algorithm.support; R.n`R|NOd  
5Dh&ez`oR'  
import org.rut.util.algorithm.SortUtil; nG(|7x   
"}azC|:5  
/** R}=]UOqH-  
* @author treeroot n$\6}\k  
* @since 2006-2-2 KcMzZ!d7m  
* @version 1.0 B1AF4}~5  
*/ RAXJsF^5o  
public class ImprovedMergeSort implements SortUtil.Sort { {3 yws 4  
RWEgUDX^/  
private static final int THRESHOLD = 10; :fMM-?s]  
W0C$*oe!_i  
/* ^LAS9K1.  
* (non-Javadoc) &opH\wa  
* )F9V=PJE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uma9yIk  
*/ t3h \.(mq  
public void sort(int[] data) { !un"XI0`t<  
int[] temp=new int[data.length]; hJtghG6v  
mergeSort(data,temp,0,data.length-1); epm8N /  
} E<.{ v\  
JjL0/&  
private void mergeSort(int[] data, int[] temp, int l, int r) { ,\">ovV33  
int i, j, k; k? _$h<Y  
int mid = (l + r) / 2; R|^t~h-  
if (l == r) UW~tS  
return; A UO0  
if ((mid - l) >= THRESHOLD) 9cHNwgD>v  
mergeSort(data, temp, l, mid); Y{\2wU!Isn  
else Vt 5XC~jK  
insertSort(data, l, mid - l + 1); m:o$|7r  
if ((r - mid) > THRESHOLD) aG&kl O>m  
mergeSort(data, temp, mid + 1, r); Z_TbM^N  
else @eD2<e  
insertSort(data, mid + 1, r - mid); W71#NjM2Z  
;R-Q,aCM}  
for (i = l; i <= mid; i++) { u=?P*Y/|W  
temp = data; X$Qi[=L  
} vzQmijr-  
for (j = 1; j <= r - mid; j++) { Ffqn|} gb  
temp[r - j + 1] = data[j + mid]; vskM;  
} 'Y/V9;`)s  
int a = temp[l]; @C6DOB  
int b = temp[r]; &qj&WfrB,  
for (i = l, j = r, k = l; k <= r; k++) { b+fy&rk@-  
if (a < b) { >Sl:Z ,g;  
data[k] = temp[i++]; Sv[_BP\^h  
a = temp; XcW3IO  
} else { 7.=s1~p  
data[k] = temp[j--]; "B{xC}Tw  
b = temp[j]; P) 0=@{(  
} (:hmp"S  
} K LM^O$=  
} F_ lj>;}a5  
U8@*I>vA  
/** tw^.(m5d  
* @param data A-NC,3  
* @param l \y+F!;IxL  
* @param i BB}iBf I'  
*/ EwJn1Mvq  
private void insertSort(int[] data, int start, int len) { ; yC`5  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Le+8s LE`Y  
} uTF EI.N  
} &S`'o%B  
} sjbC~Te--  
} YRX2^v ^[  
#hiDZ>nr  
堆排序: %y~]3XWik  
h.0&)t\q"  
package org.rut.util.algorithm.support; 0hr)tYW,G  
&Fr68HNmj  
import org.rut.util.algorithm.SortUtil; fXR_)d  
)=y6s^}  
/** |Szr=[  
* @author treeroot ~ .=HN}E  
* @since 2006-2-2 oEf^o*5(  
* @version 1.0 $XzlW=3y  
*/ Qpu2RfP  
public class HeapSort implements SortUtil.Sort{ {@`Uf;hPAX  
=*G'.D /*  
/* (non-Javadoc) <{~UKi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ho*RLVI0U  
*/ A ba%Gh  
public void sort(int[] data) { \{^yB4F_Z  
MaxHeap h=new MaxHeap(); ?DTP-#5Ba  
h.init(data); `RLrT3 4  
for(int i=0;i h.remove(); B$eF@v"  
System.arraycopy(h.queue,1,data,0,data.length); Al;oI3  
} G~j<I/)"  
omU)hFvyS  
private static class MaxHeap{ m.X+sP-e  
L{ ^@O0S  
void init(int[] data){ }Bg<Fm  
this.queue=new int[data.length+1]; n]g,)m  
for(int i=0;i queue[++size]=data; i2c<q0u  
fixUp(size); 8 ?R_O}U  
} Uv$ u\D+@[  
} O c3%pb;  
FK('E3PG  
private int size=0; tA n6pGp  
AMiFsgBj  
private int[] queue; %HS!^j3C%  
_\6(4a`,  
public int get() { M?CMN.Dw  
return queue[1]; ph+tk5k  
} tOVm~C,R  
0(6`dr_  
public void remove() { QAw,XZ.K^  
SortUtil.swap(queue,1,size--); lt"*y.%@b  
fixDown(1); [l{eJ /W  
} r\D8_S_  
file://fixdown :cz]8~i\  
private void fixDown(int k) { )}lV41u  
int j; NGzqiu"J  
while ((j = k << 1) <= size) { O/~^}8TLL  
if (j < size %26amp;%26amp; queue[j] j++; .OUE'5e p  
if (queue[k]>queue[j]) file://不用交换 )eyxAg  
break; >gl<$LQ?X  
SortUtil.swap(queue,j,k); t9l7 % +y  
k = j; VAzJclB  
} i`s pM<iR.  
} bME3" e{O  
private void fixUp(int k) { S?tLIi/  
while (k > 1) { !d )i6W?  
int j = k >> 1; {bEEQCweNJ  
if (queue[j]>queue[k]) gWPa8q<b  
break; "xI[4~'`:  
SortUtil.swap(queue,j,k); ,6L>f.V^(U  
k = j; |Q;1;QXd  
} bS6Yi)p  
} s]>%_(5  
TD9`S SpP  
} xUoY|$fI  
Sa~C#[V  
} (o\~2e:  
)T_ #X!  
SortUtil: A4x3TW?  
)UUe5H6Hd0  
package org.rut.util.algorithm; r/f;\w7  
z$b!J$A1  
import org.rut.util.algorithm.support.BubbleSort; CxV%/ChJ#  
import org.rut.util.algorithm.support.HeapSort; Z;s-t\C  
import org.rut.util.algorithm.support.ImprovedMergeSort; g&wQ^  
import org.rut.util.algorithm.support.ImprovedQuickSort; v,B\+q/  
import org.rut.util.algorithm.support.InsertSort; _Y=yR2O  
import org.rut.util.algorithm.support.MergeSort; mAa]E t.  
import org.rut.util.algorithm.support.QuickSort; kMXl {  
import org.rut.util.algorithm.support.SelectionSort; s9>!^MzBK  
import org.rut.util.algorithm.support.ShellSort; ]^<~[QK_C  
W@=ilW3RD  
/** t T:yvU@a  
* @author treeroot U @|_5[nl  
* @since 2006-2-2 jyr#e  
* @version 1.0 .IU+4ENSy4  
*/ ] ={Hq9d@  
public class SortUtil { cGKk2'v?  
public final static int INSERT = 1; 4N&}hOM'S  
public final static int BUBBLE = 2; ?CDq^)T[  
public final static int SELECTION = 3; q4oZJ-`  
public final static int SHELL = 4; ,,gYU_V  
public final static int QUICK = 5; !NjE5USi  
public final static int IMPROVED_QUICK = 6; 5c8x: e@  
public final static int MERGE = 7; Q!v[b{]8  
public final static int IMPROVED_MERGE = 8; H2vEFnV  
public final static int HEAP = 9; o5uwa{v  
KMcP!N.I  
public static void sort(int[] data) { |zKcL3*  
sort(data, IMPROVED_QUICK); g~b'}^J  
} tHeLq*))  
private static String[] name={ >wwEa4   
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 5JXLfYTUI  
}; (WvA9s{/  
aT#|mk=\  
private static Sort[] impl=new Sort[]{ 0 M?}S~p]  
new InsertSort(), dGe  
new BubbleSort(), CS49M  
new SelectionSort(), \mloR '  
new ShellSort(), KMZ`Wn=  
new QuickSort(), rf@81Ds  
new ImprovedQuickSort(), v]~[~\|a  
new MergeSort(), [qB=OxH?  
new ImprovedMergeSort(), @$]h[   
new HeapSort() S8l+WF4q  
}; M;R>]wP"V  
Tx_ LH"8  
public static String toString(int algorithm){ R0[Gfq9M =  
return name[algorithm-1]; oLoa71Q}  
} 0P42C{>'w  
5]E5V@C   
public static void sort(int[] data, int algorithm) { ?$Pj[O^hl  
impl[algorithm-1].sort(data); ~m7+^c@,  
} vNIQc "\-  
26A#X  
public static interface Sort { R#>E{[9  
public void sort(int[] data); "5Mo%cUp  
} |wx1 [xZ  
[Wc 73-  
public static void swap(int[] data, int i, int j) { Alz#zBGb  
int temp = data; ff0,K#-  
data = data[j]; syF/jWM5  
data[j] = temp; (!s[~O6  
} jk@]d5  
} i{2KMa{K  
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