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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。 ZcT%H*Ib]9  
插入排序: c -1Hxd YD  
~CTe5PX c  
package org.rut.util.algorithm.support; zB,Vi-)vH  
vE4ce  
import org.rut.util.algorithm.SortUtil; 8cN[t.S  
/** 4rpx  
* @author treeroot kl(id8r  
* @since 2006-2-2 =}SH*xi6  
* @version 1.0 qyA%_;ReMY  
*/ UvR F\x%  
public class InsertSort implements SortUtil.Sort{ 6Ja } N  
{[Bo"a>%  
/* (non-Javadoc) V(/ @$&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bU3e*Er  
*/ (~}P.?C8  
public void sort(int[] data) { cu)ssT  
int temp; os<YfMM<:/  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); '!$g<= @  
} d46PAA{'  
} ,\t:R1.  
} 0Fd<@w Q0  
*RPdU.  
}  -)='htiU  
2>bTcud>  
冒泡排序: oRJ!J-Z]  
|s<IZ2z]}R  
package org.rut.util.algorithm.support; soSdlV{  
/iz{NulOz*  
import org.rut.util.algorithm.SortUtil; /Mac:;W`  
4<P=wK=a8X  
/** u1@&o9  
* @author treeroot N*vBu `  
* @since 2006-2-2 '{e9Vh<x  
* @version 1.0 pb>TUKvT&  
*/ ^T^l3B[  
public class BubbleSort implements SortUtil.Sort{ :K-05$K  
}(*eRF'  
/* (non-Javadoc) gd#j{yI/Xf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0Yh Mwg?  
*/ 0[\^Y<ec  
public void sort(int[] data) { H]^hEQ3DT  
int temp; w+,Kpb<x[0  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ,RP"m#l!\  
if(data[j] SortUtil.swap(data,j,j-1); Ib8*rL0p<L  
} {=Z xF  
} gL)l)}#  
} MM+x}g.?  
} 8mrB_B5  
Rw j4  
} tWT ,U[  
[ ;/4'  
选择排序: SVJL|S 3k  
O %x<  
package org.rut.util.algorithm.support; > T$M0&<  
^( w%m#  
import org.rut.util.algorithm.SortUtil; Z4&,KrV  
u ZzO$e  
/** H K]-QTEn  
* @author treeroot pJnT \~o  
* @since 2006-2-2 NU]+ {7  
* @version 1.0 ?%QWpKO7X  
*/ o7_*#5rD  
public class SelectionSort implements SortUtil.Sort { #8cpZ]#  
O_gr{L}  
/* {c(@u6l28  
* (non-Javadoc) xZMQ+OW2i  
* 5mtsN#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zCpsGr  
*/ ,sa%u Fm  
public void sort(int[] data) { IdHyd Y1  
int temp; ?.A~O-w  
for (int i = 0; i < data.length; i++) { <`PW4zSI  
int lowIndex = i; a/@F?\A  
for (int j = data.length - 1; j > i; j--) { FrKI=8  
if (data[j] < data[lowIndex]) { V:YN!  
lowIndex = j; bi@z<Xm%  
} :!'!V>#g  
} ?j'Nx_RoX  
SortUtil.swap(data,i,lowIndex); FZk=-.Hk  
} %ZKP d8  
} '<$!?="  
[Yi;k,F:  
} IasWm/  
@zQ.d{  
Shell排序: d ynq)lf  
5{PT  
package org.rut.util.algorithm.support; yA+ NRWWj  
88]4 GVi  
import org.rut.util.algorithm.SortUtil; NZ|(#` X  
r bfIH":  
/** cs-wqxTX[$  
* @author treeroot 6I<^wS9j_  
* @since 2006-2-2 3 |se]~  
* @version 1.0 |H .  
*/ gpvzOW/  
public class ShellSort implements SortUtil.Sort{ qk+RZ>T<o  
ep,"@,,  
/* (non-Javadoc) C>MEgGP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >.xg o6  
*/ $ ;J:kd;<  
public void sort(int[] data) { '5f6 M^}|2  
for(int i=data.length/2;i>2;i/=2){ &E/0jxM1  
for(int j=0;j insertSort(data,j,i); 7NFRCCXHQ  
} ;Xr|['\'  
} u&E$(  
insertSort(data,0,1); )j_Y9`R  
} [& d"Z2gK  
u/ Gk>F  
/** \>G:mMk/  
* @param data 0#/NZO  
* @param j U!TSAg21P  
* @param i E!s?amM4  
*/ R(1N]>  
private void insertSort(int[] data, int start, int inc) { rLKwuZ  
int temp; ~43T$^<w;  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); `[(.Q  
} .='hYe.  
} dlf nhf  
} _rN1(=J  
<N~&Leh  
} o8ERU($/  
[_X.Equ  
快速排序: (K74Qg  
^&|KuI+ u  
package org.rut.util.algorithm.support; c %f'rj  
v PJ=~*P=  
import org.rut.util.algorithm.SortUtil; Z'<I Is:J  
R'z -#*[  
/** Cqra\  
* @author treeroot @p\te7(P%  
* @since 2006-2-2 B/^1uPTZ71  
* @version 1.0 LJh^-FQ  
*/ Y+ Qm.  
public class QuickSort implements SortUtil.Sort{ 4k]DktY}.  
`,7;2ZG~O  
/* (non-Javadoc) l`b%imX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &UextGk7  
*/ Iq% 0fX  
public void sort(int[] data) { I;5:jT`  
quickSort(data,0,data.length-1); C]f`  
} |'SgGg=E  
private void quickSort(int[] data,int i,int j){ b]oPx8*'  
int pivotIndex=(i+j)/2; AnW72|=A(  
file://swap u 6"v}gN  
SortUtil.swap(data,pivotIndex,j); P-LdzVt(^  
)zMsKfQ  
int k=partition(data,i-1,j,data[j]); $%Kyz\;7/  
SortUtil.swap(data,k,j); h+ggrwg'  
if((k-i)>1) quickSort(data,i,k-1); }~bx==SF6!  
if((j-k)>1) quickSort(data,k+1,j); U8]BhJr$Q  
%gbvX^E?  
} Od?b(bE.]  
/** ][[\!og  
* @param data  x#hGJT  
* @param i dFw>SYrpu  
* @param j q)F@f /  
* @return VM"z6@  
*/ ^;DbIo\6H  
private int partition(int[] data, int l, int r,int pivot) { })TXX7[h  
do{ s6HfN'  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); WW.amv/[a  
SortUtil.swap(data,l,r); E!6Nf[  
} M!Wjfq ^~  
while(l SortUtil.swap(data,l,r); ?c0@A*:o  
return l; e"u89acp  
} -6yFE- X/  
D/<;9hw  
} 47 |&(,{  
+=JJ=F)  
改进后的快速排序: W>2m %q U  
4/+P7.}ea-  
package org.rut.util.algorithm.support; ?]Wg{\NC6  
=.9uuF:  
import org.rut.util.algorithm.SortUtil; .0ExHcr  
hL(zVkYI  
/** %.mHV7c)%  
* @author treeroot w.9'TR  
* @since 2006-2-2 %7n(>em  
* @version 1.0 slRD /  
*/ #$*l#j"#A  
public class ImprovedQuickSort implements SortUtil.Sort { Ar iW&E  
X ^\kI1  
private static int MAX_STACK_SIZE=4096; s<`54o ,  
private static int THRESHOLD=10; ,EuJ0]2  
/* (non-Javadoc) 4.o[:5'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z&W5@6")`  
*/ o0`|r+E\  
public void sort(int[] data) { k,M %"FLQ  
int[] stack=new int[MAX_STACK_SIZE]; =3R5m>6!/  
f!D~aJ  
int top=-1; tI;pdR]  
int pivot; |`c=`xK7'  
int pivotIndex,l,r; qFwJ%(IQ  
r[votdFo  
stack[++top]=0; ~L3]Wa.  
stack[++top]=data.length-1; @, %IVKg\  
18{" @<wIs  
while(top>0){ -< RG'I~  
int j=stack[top--]; |-! yKB  
int i=stack[top--]; Im0#_ \  
*5Aq\g,n  
pivotIndex=(i+j)/2; ~K-_]*[x  
pivot=data[pivotIndex]; 4Px  
Ua](o H  
SortUtil.swap(data,pivotIndex,j); B(l8&  
yw{;Qm2\7  
file://partition C?h`i ^ >2  
l=i-1; pQ/ bIuq  
r=j; #nS[]UbwZ  
do{ _5l3e7YN  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); xZpGSlA  
SortUtil.swap(data,l,r); %^VQw!  
} " +n\0j;  
while(l SortUtil.swap(data,l,r); @!MhVNS_<  
SortUtil.swap(data,l,j); o*}--d? S  
ZA! yw7~  
if((l-i)>THRESHOLD){ SeX:A)*ez%  
stack[++top]=i; gyx4='Q  
stack[++top]=l-1; ^V5g[XL2  
} D/7hVwMw:  
if((j-l)>THRESHOLD){ =m6yH_`@  
stack[++top]=l+1; ,U?W  
stack[++top]=j; 6~b]RZe7  
} QZ:xG:qyk;  
hJIF!eoI  
} .dStV6  
file://new InsertSort().sort(data); X1GpLy)p  
insertSort(data); RLtIn!2OU  
} Gi*GFv%xB  
/** I'$}n$UvZ  
* @param data Mq [|w2.  
*/ `E4OgO  
private void insertSort(int[] data) { Y#[>j4<T  
int temp; F')fi0=  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); sM0o,l(5  
} oPVyLD  
} D3i`ehh  
} 5lp};  
Z/hk)GI  
} R]8^ @i1  
$k= 5nJ  
归并排序: SF#Rc>v  
I X]K "hT  
package org.rut.util.algorithm.support; +CF"Bm8@  
-'jPue2\  
import org.rut.util.algorithm.SortUtil; WI+ 5x  
.o!z:[IPY  
/** F A#?+kd  
* @author treeroot ! !9l@  
* @since 2006-2-2 V`;$Ua;y  
* @version 1.0 Ml Bw=Nr  
*/ 7=gv4arRwt  
public class MergeSort implements SortUtil.Sort{ rt5eN:'qY  
wWU5]v  
/* (non-Javadoc) o"5[~$O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oF9c>^s  
*/  #Lq{_Y  
public void sort(int[] data) { ^%<t^sE  
int[] temp=new int[data.length]; !"e~HZmr  
mergeSort(data,temp,0,data.length-1); OYC\+ =  
} 4EB&Zmg[K  
1G6MO  
private void mergeSort(int[] data,int[] temp,int l,int r){ |>2IgTh1a  
int mid=(l+r)/2; eJm7}\/6`  
if(l==r) return ; buv*qPO  
mergeSort(data,temp,l,mid); ^twJNm{99  
mergeSort(data,temp,mid+1,r); ".=LzjE<gv  
for(int i=l;i<=r;i++){ 5W29oz}-S  
temp=data; ag \d4y6  
} Y=-ILN("  
int i1=l; rW&# Xw/a  
int i2=mid+1; ZO!  
for(int cur=l;cur<=r;cur++){ ,*w  
if(i1==mid+1) _P]!J~$5  
data[cur]=temp[i2++]; ,& ^vc_}  
else if(i2>r) xO<$xx  
data[cur]=temp[i1++]; (3;dtp>Xx  
else if(temp[i1] data[cur]=temp[i1++]; .}V&*-ep  
else ,%a7sk<5k  
data[cur]=temp[i2++]; hDf|9}/UQd  
} ;C+g)BW  
} $)fybn Y  
EC6Q<&]Iw  
} Wveba)"$  
ydyGPZ t  
改进后的归并排序: L`!M3c@u  
i47xF7y\  
package org.rut.util.algorithm.support;   ps*dO  
Lk-%I?  
import org.rut.util.algorithm.SortUtil; clwJ+kku@  
w|uO)/v  
/** rq.S0bzH  
* @author treeroot W"@FRWcd  
* @since 2006-2-2 MGmUgc  
* @version 1.0 E9yBa=#*c  
*/ 3Q@HP;<  
public class ImprovedMergeSort implements SortUtil.Sort { Q6|~ks+Y  
q~K KN /N  
private static final int THRESHOLD = 10; =c>w  
guC7!P^  
/* 4p %=8G|  
* (non-Javadoc) rkW2_UTZE  
* !w[io;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %!>~2=Q2*  
*/ _Wjd`*  
public void sort(int[] data) { p FkqDU  
int[] temp=new int[data.length]; !QB(M@1  
mergeSort(data,temp,0,data.length-1); 0H6^2T<  
} 1{.=T&eG#  
x\ pC&  
private void mergeSort(int[] data, int[] temp, int l, int r) { v .ftfL!  
int i, j, k; ,;2x.We  
int mid = (l + r) / 2; J"x M[c2  
if (l == r) x-e?94}^  
return; RQ1`k,R=  
if ((mid - l) >= THRESHOLD) Z !qHL$  
mergeSort(data, temp, l, mid); i'Oh^Y)E#  
else :.+?v*%;n  
insertSort(data, l, mid - l + 1); aFj)s?$4]K  
if ((r - mid) > THRESHOLD) BK_x5mGu3  
mergeSort(data, temp, mid + 1, r); +Y^_1  
else (v\Cv)OS  
insertSort(data, mid + 1, r - mid); B`/c Kfg  
a09]5>*  
for (i = l; i <= mid; i++) { -cjwa-9 ~  
temp = data; Ikkv <uY  
} Y68T&swD  
for (j = 1; j <= r - mid; j++) { =DhzV D  
temp[r - j + 1] = data[j + mid]; |Q'l&Gt6  
} @Ik@1  
int a = temp[l]; 4}~zVT0'~  
int b = temp[r]; }/%(7Ff{  
for (i = l, j = r, k = l; k <= r; k++) { ^}-(8~_en  
if (a < b) { {ER%r'(4Z  
data[k] = temp[i++]; QX*HvT  
a = temp; DJtKLG0  
} else { ;(kU:b|j  
data[k] = temp[j--]; l+>&-lX'  
b = temp[j]; ?T\m V}  
} l"\W]'T:r  
} \gh`P S-B  
} %EZG2JjO)  
?]fd g;?@  
/** !~{AF|2f  
* @param data .Jt&6N  
* @param l =Of!1TR(  
* @param i *N0R3da  
*/ 9M)N2+hkZ  
private void insertSort(int[] data, int start, int len) { Fn8d;%C  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); );^] is~  
} GHMoT  
} "G8w}n:y  
}  !,*#e  
} ~$0Qvyb>  
|/?)u$U<  
堆排序: rKDMIECrm  
rmCrP(  
package org.rut.util.algorithm.support; f3 lKdXnP  
;P-xKRU!Xx  
import org.rut.util.algorithm.SortUtil; yK +&1U2`  
J^@0Ff;=5^  
/** EV:y}  
* @author treeroot lg0iNc!  
* @since 2006-2-2 ,3k"J4|d  
* @version 1.0 8 0>qqz  
*/ e ,_b  
public class HeapSort implements SortUtil.Sort{ vG'JMzAm  
g+ik`q(ge  
/* (non-Javadoc) W9{>.E?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F<y5zqGy@  
*/ ELp @/c=Wr  
public void sort(int[] data) { 2WjQ-mM#  
MaxHeap h=new MaxHeap(); xGQ958@  
h.init(data); MorR&K  
for(int i=0;i h.remove(); D?u*^?a2  
System.arraycopy(h.queue,1,data,0,data.length); .)W'{2J-  
} lc%2Pi[X  
Azrc+k  
private static class MaxHeap{ P`'Nv  
Nb[z+V{=  
void init(int[] data){ 4c2*)x$@  
this.queue=new int[data.length+1]; =kq!e  
for(int i=0;i queue[++size]=data; qA<PF+f  
fixUp(size); ;r[@;2p*(  
} jXO*_R  
} -WIT0F4o;  
M"OX NPkc  
private int size=0; {89F*  
R{~Yh.)~  
private int[] queue; T!uK _  
fiSc\C~  
public int get() { cvpcadN[  
return queue[1]; E3#}:6m  
} ) MFa~/x  
~n#rATbxf  
public void remove() { W@w#A]  
SortUtil.swap(queue,1,size--); o$4n D#P3  
fixDown(1); L Ty [)  
} %,rUN+vW  
file://fixdown t)74(  
private void fixDown(int k) { Oo<^~d2=  
int j; r"OVu~ND  
while ((j = k << 1) <= size) { *yqEl O  
if (j < size %26amp;%26amp; queue[j] j++; [X.sCl|  
if (queue[k]>queue[j]) file://不用交换 DfFsCTu  
break; L  &F0^  
SortUtil.swap(queue,j,k); -I.OvzQ*  
k = j; #/  1  
} 5taYm'  
} pHlw&8(f"  
private void fixUp(int k) { Nhv~f0  
while (k > 1) { 7p&%0'BO1z  
int j = k >> 1; J7BfH,o  
if (queue[j]>queue[k]) Ij hC@5qk  
break; DCv~^  
SortUtil.swap(queue,j,k); 0+b1R}!2  
k = j; C8%Io l  
} 83UIH0(  
} d-g&TSGd  
2H8,&lY.p  
} xX`P-h>V`c  
2{zFO3i<3  
} |q5R5 mQ  
:Vc+/ZyW  
SortUtil: &[}T41  
n83,MV?-  
package org.rut.util.algorithm; }E+}\&  
>ZKE  
import org.rut.util.algorithm.support.BubbleSort; yz!j9pJ  
import org.rut.util.algorithm.support.HeapSort; IiV:bHUE}0  
import org.rut.util.algorithm.support.ImprovedMergeSort; p%_#"dkC7  
import org.rut.util.algorithm.support.ImprovedQuickSort; ]R/VE"-  
import org.rut.util.algorithm.support.InsertSort; 6X5`npf  
import org.rut.util.algorithm.support.MergeSort; Hd6g0  
import org.rut.util.algorithm.support.QuickSort; [ "}0umt  
import org.rut.util.algorithm.support.SelectionSort; R=~+-^O!  
import org.rut.util.algorithm.support.ShellSort; U]lXw+&  
DQ^yqBVgQ  
/** oJy]n9  
* @author treeroot [^B04x@  
* @since 2006-2-2 _ 97  
* @version 1.0 w? A&XB+  
*/ yzt6   
public class SortUtil { |D u.aN  
public final static int INSERT = 1; Q>u$tLX&  
public final static int BUBBLE = 2; 4(MZ*6G]?  
public final static int SELECTION = 3; r#wMd9])  
public final static int SHELL = 4; !']=7It{  
public final static int QUICK = 5; l9XK;0R9  
public final static int IMPROVED_QUICK = 6; s.]7c CY  
public final static int MERGE = 7; }!b9L]  
public final static int IMPROVED_MERGE = 8; |l(rR06#.]  
public final static int HEAP = 9; 2xH9O{  
Ob2H7 !  
public static void sort(int[] data) { Af5O;v\  
sort(data, IMPROVED_QUICK); zlIXia5  
} dL'hC#!h  
private static String[] name={ IB:Wh;_x  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" pb_+_(/c  
}; TOV531   
{~ ZSqd  
private static Sort[] impl=new Sort[]{ FLJdnL  
new InsertSort(), u1O?`  
new BubbleSort(), E~]8>U?V  
new SelectionSort(), ^Humy DD6  
new ShellSort(), P& C,EE$  
new QuickSort(), E^_P  
new ImprovedQuickSort(), x]lv:m\)jT  
new MergeSort(), w1EYXe  
new ImprovedMergeSort(), S P)$K=  
new HeapSort()  B\1F  
}; _H(m4~ M  
orCD?vlh  
public static String toString(int algorithm){ l@nkR&4[  
return name[algorithm-1];  Ok[y3S  
} j8 nG Gx  
)nyud$9w'  
public static void sort(int[] data, int algorithm) { $A)i}M;uK  
impl[algorithm-1].sort(data); w~QUG^0Fx  
} 7%L%dyN  
lq=| =  
public static interface Sort { >l{<p(  
public void sort(int[] data); h|"98PI  
} cAIMt]_  
ZurQr}  
public static void swap(int[] data, int i, int j) { 4]RGLN  
int temp = data; D`PnY&ffT  
data = data[j]; EAp6IhW{  
data[j] = temp; :\x53-&hO4  
} ;LNFPo   
} Ath^UKO"  
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