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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。 %a<N[H3NV@  
插入排序: n7i;^=9 mM  
3+u11'0=t  
package org.rut.util.algorithm.support; J [J,  
1"RO)&  
import org.rut.util.algorithm.SortUtil; v*7}ux8  
/** 'IY?7+[  
* @author treeroot C|5eV=f)P  
* @since 2006-2-2 ),v[.9!}:  
* @version 1.0 }_u1'  
*/ N&K:Jp  
public class InsertSort implements SortUtil.Sort{ Li(}_  
}i!hzkK#  
/* (non-Javadoc) U=\ZeYK.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) " |[w.`  
*/ [y&uc  
public void sort(int[] data) { )B9/P>c  
int temp; +7 mUX  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5|A"YzY#  
} F|&%Z(@a  
} .3CQFbHF  
} +[` )t/   
jfU$qo!gi  
} ~hb;kc3  
wCEcMVT  
冒泡排序: ;--p/h*.  
i3vg7V.  
package org.rut.util.algorithm.support; =>- W!Of  
4*9BAv  
import org.rut.util.algorithm.SortUtil; T[- %b9h>  
ZfibHivz  
/** 4xF}rm  
* @author treeroot $wcTUl  
* @since 2006-2-2 s{:Thgv,9  
* @version 1.0 XZ"oOE0=  
*/ ao"Z%#Jb~  
public class BubbleSort implements SortUtil.Sort{ MM*9Q`cB  
`-g$ 0lm7  
/* (non-Javadoc) EY@KWs3"H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7[1 VFc#tf  
*/ %3yrX>Js  
public void sort(int[] data) { EX@Cf!GjN  
int temp; #V.u[:mO  
for(int i=0;i for(int j=data.length-1;j>i;j--){ zp\_5[qJ;  
if(data[j] SortUtil.swap(data,j,j-1); Ckhw d  
} j:$Z-s  
} c_u7O \  
} b?/Su<q  
} {KSy I#  
TA+#{q+a  
} uT Y G/O  
CoV @{Pi  
选择排序: @h\i<sh!^  
RN$q,f[#  
package org.rut.util.algorithm.support; X;v{,P=J  
1pqYB]*u_  
import org.rut.util.algorithm.SortUtil; q)PSHr=Z  
D >kkA|>  
/** &zPM# Q  
* @author treeroot \}Kad\)  
* @since 2006-2-2 ^y~oXS(  
* @version 1.0 5a/3nsup5  
*/ JEfhr  
public class SelectionSort implements SortUtil.Sort { ~]BR(n  
]0pI6"  
/* /x /W>J2  
* (non-Javadoc) T{ lm z<g  
* ?[ D6|gp  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P.~sNd oJ  
*/ fVZ_*'v  
public void sort(int[] data) { HPK}Z|Vl  
int temp; gIcPKj"8${  
for (int i = 0; i < data.length; i++) { %Jn5M(myC  
int lowIndex = i; *}LQZFrnX  
for (int j = data.length - 1; j > i; j--) { $-)y59w"  
if (data[j] < data[lowIndex]) { ;e~K<vMm;y  
lowIndex = j; & aF'IJC  
} [ HjGdC  
} *JaFt@ x  
SortUtil.swap(data,i,lowIndex); #elaz8 5  
} 7p18;Z+6>X  
} VE/~tT;  
cH7D@p}  
} 16I(S  
BimM)4g  
Shell排序: A3zNUad;  
5gPAX $jH  
package org.rut.util.algorithm.support; 2K'}Vm+  
uMP&.Y(  
import org.rut.util.algorithm.SortUtil; {XYf"ONi  
CY9`HQ1  
/** t{/ EN)J  
* @author treeroot W&^2Fb  
* @since 2006-2-2 B Zw#ACU  
* @version 1.0 R7By=Y!t  
*/ ;"GI~p2~7  
public class ShellSort implements SortUtil.Sort{ vGPaWYV  
YCQ+9  
/* (non-Javadoc) d>7bwG+k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VAR/"  
*/ m;I;{+"u  
public void sort(int[] data) { +<I1@C  
for(int i=data.length/2;i>2;i/=2){ |m7`:~ow  
for(int j=0;j insertSort(data,j,i); xE.=\UzJ  
} c[0$8F>  
} (.3L'+F  
insertSort(data,0,1); l@YpgyqaL  
} yc5n   
[G|2m_  
/** gf2w@CVF>=  
* @param data mwTn}h3N  
* @param j UoxF00H@!  
* @param i I@q>ES!1H  
*/ PX'I:B]x*  
private void insertSort(int[] data, int start, int inc) { Y<.F/iaH  
int temp; XT_BiZ%l5O  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); &f qmO>M  
} LGCL*Qbsg  
} "WYcw\@U  
} (A &@ <  
uf)W? `e~  
} Bv@m)$9\+3  
T[q-$8U  
快速排序: I}v'n{5(  
P[nWmY  
package org.rut.util.algorithm.support; gkk< -j'  
*Ucyxpu~$  
import org.rut.util.algorithm.SortUtil; (\/HGxv  
Yhw* `"X  
/** iK %Rq  
* @author treeroot -;`W"&`ss  
* @since 2006-2-2 fZ g*@RR  
* @version 1.0 g&E_|}u4  
*/ kyo ,yD  
public class QuickSort implements SortUtil.Sort{ f|^f^Hu:{  
)#ujF~w>  
/* (non-Javadoc) j'J*QK&Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8rpN2M 3h  
*/ 610k#$  
public void sort(int[] data) { tl^[MLQa  
quickSort(data,0,data.length-1); GyPN)!X@.&  
} "&+0jfLY+  
private void quickSort(int[] data,int i,int j){ "DN`@  
int pivotIndex=(i+j)/2; }b^lg&$(  
file://swap G<dXJ ]\\  
SortUtil.swap(data,pivotIndex,j); 7z,M`14  
hB+ t pa  
int k=partition(data,i-1,j,data[j]); r#}Sy \  
SortUtil.swap(data,k,j); 4QVd{  
if((k-i)>1) quickSort(data,i,k-1); n|*V 8VaL  
if((j-k)>1) quickSort(data,k+1,j); N_ DgnZ7*  
nz',Zm},  
} v: 0i5h&M  
/** ]\ezES  
* @param data gPi_+-@  
* @param i Vi|jkyC8  
* @param j rN~`4mZ  
* @return  e.GzGX  
*/ FS}z_G|4]  
private int partition(int[] data, int l, int r,int pivot) {  k WtUj  
do{ bcs!4  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); >?'FH +2K  
SortUtil.swap(data,l,r); "J1ar.li  
} W<L6,  
while(l SortUtil.swap(data,l,r); HKkf+)%)x  
return l; D.6dPzu`  
} &F}+U#H  
7. .vaq#  
} z>:7}=H0  
jb2:O,+!  
改进后的快速排序: a=FRJQ8S  
9-^p23.@[j  
package org.rut.util.algorithm.support; [mPdT^h  
,f+5x]F?m  
import org.rut.util.algorithm.SortUtil; jQ)>XOok  
o4;Nb|kk9+  
/** Q2NnpsA^6  
* @author treeroot iL, XBoE  
* @since 2006-2-2 %}!}2s.A  
* @version 1.0 ODEXQl}R  
*/ Ag6 (  
public class ImprovedQuickSort implements SortUtil.Sort { eeZysCy+DY  
F/SsiUBS  
private static int MAX_STACK_SIZE=4096; RKkI/Z0  
private static int THRESHOLD=10; ,<^HB+{Wo  
/* (non-Javadoc) u&XkbPZ%4c  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d 6EY'*0  
*/ I)6Sbt JV^  
public void sort(int[] data) { B?y t%f1  
int[] stack=new int[MAX_STACK_SIZE]; N08n/u&cr,  
Ib8i#DV  
int top=-1; _%vqBr*  
int pivot; znO00qX  
int pivotIndex,l,r; ; ,<J:%s  
*v ^"4  
stack[++top]=0; PAU+C_P  
stack[++top]=data.length-1; J*!:ar  
`;CU[Ps?]  
while(top>0){ je4&'vyU  
int j=stack[top--]; o}+Uy  
int i=stack[top--]; s@LNQ|'kO  
s;7qNwYO  
pivotIndex=(i+j)/2; 5MY}(w  
pivot=data[pivotIndex]; qd~98FS  
G=HxD4l  
SortUtil.swap(data,pivotIndex,j); 4F,Ql"ae(  
gQ=POJ=G  
file://partition 6//FZ:q  
l=i-1; asN }  
r=j; |;9 A{#zM  
do{ 0nn]]B@l  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); E(!6n= qR  
SortUtil.swap(data,l,r); 5f'g 3'  
} 2HGD{;6>v{  
while(l SortUtil.swap(data,l,r); p?$G>nkdq  
SortUtil.swap(data,l,j); Tj21YK.mk  
CQzjCRS d  
if((l-i)>THRESHOLD){ .k,Jt+  
stack[++top]=i; aXbNDj ][  
stack[++top]=l-1; k5t^s  
} [AX"ne# M*  
if((j-l)>THRESHOLD){ )@bH"  
stack[++top]=l+1; (#B^Hyz!  
stack[++top]=j; *rn]/w8ZW  
} MkW1FjdP  
vDW&pF_eI>  
} 7<1fKrN?GF  
file://new InsertSort().sort(data); _TOi [G T  
insertSort(data); PM-PP8h  
} A?Nn>xF9X  
/** <F)w=_%&  
* @param data U8K &Q4^  
*/ ] `B,L*m6  
private void insertSort(int[] data) { UOu6LD/|h  
int temp; 'EL ||  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); w.D4dv_H  
} I[=Wmxa?r  
} Wg` +u  
} h7EUIlh"  
4\1wyN /}M  
} 7}d$*C  
13.{Y)  
归并排序: ]HyHz9QkL  
8lOZ IbwS  
package org.rut.util.algorithm.support; m)@Q_{=6M  
0):uF_t<  
import org.rut.util.algorithm.SortUtil; ]{|fYt_-  
C|4 U78f{  
/** 5 6Sh  
* @author treeroot JlC<MQ?  
* @since 2006-2-2 66~e~F}z  
* @version 1.0 AZxrJ2G  
*/  n5bXQ  
public class MergeSort implements SortUtil.Sort{ h4Xc Kv+  
F2bm+0vOJ  
/* (non-Javadoc) \|eJJC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #Rin*HL##  
*/ 1Q&cVxA"\  
public void sort(int[] data) { 09  
int[] temp=new int[data.length]; 0rku4T  
mergeSort(data,temp,0,data.length-1); R=\v3m  
} <G\ <QV8W  
bbd0ocva  
private void mergeSort(int[] data,int[] temp,int l,int r){ Az9X#h.vf  
int mid=(l+r)/2; =cdh'"XN  
if(l==r) return ; M4TrnZ1D}  
mergeSort(data,temp,l,mid); *he7BUO  
mergeSort(data,temp,mid+1,r); 2;~KL-h0TK  
for(int i=l;i<=r;i++){ Az U|p  
temp=data; z@!^ow)`J  
} B;eW/#`  
int i1=l; ')C|`(hs   
int i2=mid+1; `]K,'i{R  
for(int cur=l;cur<=r;cur++){ d@-wi%,^  
if(i1==mid+1) X$BXT  
data[cur]=temp[i2++]; u=vh Z%A]  
else if(i2>r) uDILjOT  
data[cur]=temp[i1++]; ]ddHA  
else if(temp[i1] data[cur]=temp[i1++]; =MMCf0  
else 'oC$6l'rQ  
data[cur]=temp[i2++]; mYjf5  
} -"F0eV+y  
} j: <t  
-{!&/;Z  
} BwJNi6,  
HKpD 2M  
改进后的归并排序: /ca(a\@R  
+d=~LQ}*  
package org.rut.util.algorithm.support; %h0D)6 j  
!loO%3_)  
import org.rut.util.algorithm.SortUtil; {U(Bfe^a,  
ab{;Z 5O  
/** @|^jq  
* @author treeroot gC0;2  
* @since 2006-2-2 +q7qK*  
* @version 1.0 !2(.$}E  
*/ _]P a>8X*  
public class ImprovedMergeSort implements SortUtil.Sort { pXssh  
Bk+{}  
private static final int THRESHOLD = 10; uLF\K+cz  
m79m{!q$-  
/* j^:b-:F  
* (non-Javadoc) {3jm%ex  
* *pmoLiuB>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iFY]0@yt  
*/ Tm0?[[3hC  
public void sort(int[] data) { dV'6m@C  
int[] temp=new int[data.length]; zjzqKdy}F  
mergeSort(data,temp,0,data.length-1); |P^ikx6f5  
} PsacXZNs\N  
^a: Saq-}  
private void mergeSort(int[] data, int[] temp, int l, int r) { \z<ws&z3`$  
int i, j, k; hn*}5!^  
int mid = (l + r) / 2; hrUm} @d  
if (l == r) PpI+@:p[  
return; ,%& LG],6  
if ((mid - l) >= THRESHOLD) aU,0gvI(}  
mergeSort(data, temp, l, mid); M p}!+K  
else t"jIfU>'a/  
insertSort(data, l, mid - l + 1); 17?NR\Q  
if ((r - mid) > THRESHOLD) 6yV5Yjs  
mergeSort(data, temp, mid + 1, r); rerUM*0  
else _:/Cl9~  
insertSort(data, mid + 1, r - mid); Ih9ORp7  
My`josJ`Pb  
for (i = l; i <= mid; i++) { XY&]T'A  
temp = data; 1mvu3}ewx  
} T +|J19  
for (j = 1; j <= r - mid; j++) { lyMJW }T+>  
temp[r - j + 1] = data[j + mid]; eUGm ns  
} eHfG;NsV /  
int a = temp[l]; 0jl:Yzo&\  
int b = temp[r]; OgzGkc@A  
for (i = l, j = r, k = l; k <= r; k++) { 0%(4G83gw  
if (a < b) { 3M`hn4)K  
data[k] = temp[i++]; MZ >0K  
a = temp; sWqPw}/3>  
} else { o}j_eH l{  
data[k] = temp[j--]; + 3~Gc<OO  
b = temp[j]; 0e7O#-  
} @eAGN|C5  
} `SSP53R(0  
}  P %U9S  
J"a2 @S&  
/** * 7zN  
* @param data [xp~@5r'  
* @param l [|m>vY!  
* @param i !<['iM  
*/ t6H2tP\AS  
private void insertSort(int[] data, int start, int len) { }SJLBy0  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); *n$m;yI  
} qU /Wg  
} Npg5Z%+y  
} F?+Uar|-a  
} %3@RZe  
s1*WK&@  
堆排序: K_w0+oY a  
gw}7%U`T9  
package org.rut.util.algorithm.support; OA8b_k~  
XQ4^:3Yc  
import org.rut.util.algorithm.SortUtil; 2kmna/Qa6  
r)Mx.`d!  
/** L{o >D"  
* @author treeroot #/ gme  
* @since 2006-2-2 MIMPJXT#.  
* @version 1.0 H?zCIue3  
*/ 0I ND9h. %  
public class HeapSort implements SortUtil.Sort{ pN^G[  
CH R?i1e  
/* (non-Javadoc) MM58w3Mz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1PT_1[eAR  
*/ 1H2u,{O  
public void sort(int[] data) { ss M9t  
MaxHeap h=new MaxHeap(); JD\-X(O  
h.init(data); _R!!4Hp<Q  
for(int i=0;i h.remove(); 4 *2>R8SX~  
System.arraycopy(h.queue,1,data,0,data.length); vG Lb2Q  
} kod_ 1LD  
B #V 4  
private static class MaxHeap{ <xh'@592  
] !*  
void init(int[] data){ pa> 2JF*  
this.queue=new int[data.length+1]; mYs->mg1  
for(int i=0;i queue[++size]=data; KX`nHu;  
fixUp(size); 9QM"JEu@  
} MAhPO!e5.  
} /n3&e  
2W-NCE%K)T  
private int size=0; gS o(PW)  
qZ]VS/5A  
private int[] queue; z(#hL-{c  
(R 2P< Zr  
public int get() { O=?X%m #  
return queue[1]; {,mRMDEy  
} Cot\i\]jv  
arH\QPaka'  
public void remove() { l$~bkVNL  
SortUtil.swap(queue,1,size--); |"E9DD]{  
fixDown(1); rls#g w  
} Xq)%w#l5?  
file://fixdown EF^=3  
private void fixDown(int k) { Ol5xyj  
int j; :H8L(BsI  
while ((j = k << 1) <= size) { CH+&  
if (j < size %26amp;%26amp; queue[j] j++; &``oZvu B  
if (queue[k]>queue[j]) file://不用交换 WMl^XZO  
break; =X'7V}Q}  
SortUtil.swap(queue,j,k); Gbm_xEPC  
k = j; B]}V$*$ \?  
} +&8Ud8Q  
} =sVt8FWGY  
private void fixUp(int k) { 1Moh`  
while (k > 1) { 8t \>  
int j = k >> 1; k_^/   
if (queue[j]>queue[k]) ~TR|Pv  
break; oi4Wxcj  
SortUtil.swap(queue,j,k); +7OT`e %q  
k = j; x#VUEu]8  
} u9~J1s<e  
} O7*i;$!R  
5VoiDM=\c  
} j;'Wf[V  
:R\v# )C  
} G QBN-Qv  
Rw8m5U  
SortUtil: &V{,D))6[  
O!Cu.9}  
package org.rut.util.algorithm; ,PxQ[CGg  
)#Bfd(F  
import org.rut.util.algorithm.support.BubbleSort; &bK$!8Z  
import org.rut.util.algorithm.support.HeapSort; PzkXrDlB7  
import org.rut.util.algorithm.support.ImprovedMergeSort; *9 wHH-#  
import org.rut.util.algorithm.support.ImprovedQuickSort; Q8:ocEhR  
import org.rut.util.algorithm.support.InsertSort; DN0b.*[`3  
import org.rut.util.algorithm.support.MergeSort; DCUq.q)  
import org.rut.util.algorithm.support.QuickSort; *lO+^\HXD  
import org.rut.util.algorithm.support.SelectionSort; SnU{ZGR>sP  
import org.rut.util.algorithm.support.ShellSort; Xe+FMbBco  
?{")Wt  
/** BQg]$Tr?  
* @author treeroot E1g$WhXIS  
* @since 2006-2-2 dF]8>jBOL  
* @version 1.0 H2cc).8"  
*/ +N_%|!F-c  
public class SortUtil { [ Ulo; #P  
public final static int INSERT = 1; %;?3A#  
public final static int BUBBLE = 2; +[`%b3Nk  
public final static int SELECTION = 3; XjU;oh4:.  
public final static int SHELL = 4; XLxr~Yo  
public final static int QUICK = 5; _S1uJ~j;E  
public final static int IMPROVED_QUICK = 6; 9%6`ZS~3  
public final static int MERGE = 7; ^u,x~nPXg  
public final static int IMPROVED_MERGE = 8; XS/TYdXB8  
public final static int HEAP = 9; Jl ?Q}SB  
f'U]Ik;Jy  
public static void sort(int[] data) { J< M;vB)  
sort(data, IMPROVED_QUICK); 0yNlf-O  
} &X(-C9'j  
private static String[] name={ L9)&9 /f  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" "Fiv ]^  
}; /d'u1FnA =  
wv-8\)oA  
private static Sort[] impl=new Sort[]{ JY16|ia  
new InsertSort(), )_?$B6hf,&  
new BubbleSort(), q(W@=-uDK  
new SelectionSort(), 1[]cMyV  
new ShellSort(), ZeZwzH)BD  
new QuickSort(), hNy S  
new ImprovedQuickSort(), k#n=mm'N9  
new MergeSort(), %-CC_R|0$  
new ImprovedMergeSort(), pnU g:R@  
new HeapSort() vxx3^;4p  
}; a=dN.OB}F7  
DM95Il[/  
public static String toString(int algorithm){ p2K9R4  
return name[algorithm-1]; H"l'E9k.&p  
} Jhc S  
Y)`+u#` R  
public static void sort(int[] data, int algorithm) { y]_DW6W  
impl[algorithm-1].sort(data); }d(6N&;"zN  
} aJ5R0Y,  
rpmDr7G  
public static interface Sort { }0G Ab2  
public void sort(int[] data); i}19$x.D`  
} BR'|hG  
KX`,7-  
public static void swap(int[] data, int i, int j) { 2OTpGl  
int temp = data; d,)L,J  
data = data[j]; $BY{:#a]  
data[j] = temp; rL=$WxdPU  
} %}[??R0  
} *)<tyIHd  
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