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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。 %,HUn`  
插入排序: 5XB]p|YU~s  
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package org.rut.util.algorithm.support; ' 7oCWHq[  
ITqAy1m@C  
import org.rut.util.algorithm.SortUtil; 6_u!{  
/** 7qUg~GJX  
* @author treeroot rTVv6:L  
* @since 2006-2-2 ZN;ondp4  
* @version 1.0 ISFNP&& K  
*/ esBv,b?*  
public class InsertSort implements SortUtil.Sort{ !u8IZpf  
S5ai@Ks f  
/* (non-Javadoc) {,h_T0D^j  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bfZt<-  
*/ 4u%AZ<-C}m  
public void sort(int[] data) { +75"Q:I  
int temp; .[1 f$  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); D&ua A-;s  
} &S 66M2  
} aQ\SV0PI  
} h%W,O,K/  
ji\LC%U-  
} rXMc0SPk  
z\ONw Ml  
冒泡排序: )8#-IXxp  
S(xs;tZ  
package org.rut.util.algorithm.support; 'Rsr*gX#  
_D?/$D7u#%  
import org.rut.util.algorithm.SortUtil; fjy\Q  
]u$tKC  
/** W'"?5} (  
* @author treeroot )uo".n|n~B  
* @since 2006-2-2 3%GsTq2o  
* @version 1.0 $|J+  
*/ 7 L ,`7k|  
public class BubbleSort implements SortUtil.Sort{ 7#G!es  
Et(H6O 8  
/* (non-Javadoc) j n SZ@u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H' /V<%  
*/ +}?%w|8||s  
public void sort(int[] data) { Al8Dw)uG{  
int temp; $ ~%Y}Xt*  
for(int i=0;i for(int j=data.length-1;j>i;j--){ F {L#  
if(data[j] SortUtil.swap(data,j,j-1); ocK4Nxs  
} ]S@T|08b  
} -=8f*K[W  
} \ctzv``/n  
} $!9/s S?  
XXA'B{@Y)  
} aZ\Z7(  
^w``(-[*  
选择排序: >#;;g2UV  
 WTl0}wi  
package org.rut.util.algorithm.support; SSE,G!@  
a*D<J}xe  
import org.rut.util.algorithm.SortUtil; U; <{P  
uuF~+=.|  
/** W% Lrp{  
* @author treeroot =EA @  
* @since 2006-2-2 {Ke IYjE  
* @version 1.0 +$(y2F7|u-  
*/ wA/!A$v(  
public class SelectionSort implements SortUtil.Sort { uuD2O )v  
\I4Uj.'> \  
/* ^b|? ?9&  
* (non-Javadoc) W=293mME  
* h>[ qXz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z(^dwMw}  
*/ .6 0yQ[aE  
public void sort(int[] data) { NopfL  
int temp; {c LWum[SY  
for (int i = 0; i < data.length; i++) { Viw,YkC  
int lowIndex = i; <b _K*]Z  
for (int j = data.length - 1; j > i; j--) { sg}<()  
if (data[j] < data[lowIndex]) { ,%xat`d3,3  
lowIndex = j; N2[jBy8M  
} bDh4p]lm  
} C Q iHk  
SortUtil.swap(data,i,lowIndex); UukY9n];]  
} noa+h<vGb  
} r1RM7y  
vShB26b  
} Z"w}`&TC$^  
4h--x~ @  
Shell排序: 04v ~ K  
\vc&V8  
package org.rut.util.algorithm.support; ~~k0&mK|Q  
s}` |!Vyl  
import org.rut.util.algorithm.SortUtil; cyHbAtl  
%Y'/_ esH2  
/** q8/k $5E  
* @author treeroot [kr-gV  
* @since 2006-2-2 r^rk@W;[  
* @version 1.0 5? Y(FhnIC  
*/ /@&o%I3h  
public class ShellSort implements SortUtil.Sort{ :]Om4Q\-#  
= B;qy7?  
/* (non-Javadoc) P~:^bU^F7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T8&sPt,f  
*/ u R5h0Fi  
public void sort(int[] data) { `}sFT:1&  
for(int i=data.length/2;i>2;i/=2){ rZ-< Ryg  
for(int j=0;j insertSort(data,j,i); 1)ij*L8k  
} Hi~)C\  
} G^K;+&T  
insertSort(data,0,1); 4K`b?{){+a  
} 3y2L! &'z  
[`tNa Vg  
/** .:Wp9M  
* @param data `<<9A\Y-f  
* @param j >>C S8  
* @param i zlQBBm;fE  
*/ "o u{bKe  
private void insertSort(int[] data, int start, int inc) { i-4L{T\K  
int temp; 2MYez>D  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); lAC "7 Z?F  
} j^U"GprA  
} tIod=a)  
} Zj ^e8u=T  
\j wxW6>  
} p*YV*Arv  
DyZ6&*s$  
快速排序: 0 .T5% _ /  
9X33{  
package org.rut.util.algorithm.support; Tl-%;X<X  
?g@X+!RB  
import org.rut.util.algorithm.SortUtil; wEI? 9  
bv hV  
/** !e |Bi{  
* @author treeroot |<oqT+?i  
* @since 2006-2-2 x.|sCqx  
* @version 1.0 c0&! S-4M  
*/ d >zC[]1  
public class QuickSort implements SortUtil.Sort{ z`\KQx  
W[Z[o+7pK  
/* (non-Javadoc) p*@t$0i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j%Uoigi  
*/ ObreDv^,  
public void sort(int[] data) { \{a5]G(4s  
quickSort(data,0,data.length-1); ;tA$ x!5]  
} 7u :kR;wk  
private void quickSort(int[] data,int i,int j){ 0xCe6{86  
int pivotIndex=(i+j)/2; tr/.pw6  
file://swap ?GLCd7TP  
SortUtil.swap(data,pivotIndex,j); ph!h8@e  
3tUn?; 9B  
int k=partition(data,i-1,j,data[j]); ]{+Y!tD  
SortUtil.swap(data,k,j); ).e}.Z6[i`  
if((k-i)>1) quickSort(data,i,k-1); <W7WlT  
if((j-k)>1) quickSort(data,k+1,j); e(b$LUV  
r6aIW8  
} Z:x`][vg  
/** b~YIaD[Z  
* @param data U-,s/VQ?  
* @param i Z}>;@c  
* @param j N;>s|ET  
* @return uocFOlU0n  
*/ )g3c-W=  
private int partition(int[] data, int l, int r,int pivot) { fN<Y3^i"  
do{ N0\<B-8+,>  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); b^}U^2S%  
SortUtil.swap(data,l,r); /"~UGn]R  
} Q:y'G9b  
while(l SortUtil.swap(data,l,r); =9p3^:S  
return l; o^owv(  
} m&(qr5>b  
v|]"uPxH?  
} n8T'}d+mm  
q3K}2g  
改进后的快速排序: mC(YO y  
]\}MSo3  
package org.rut.util.algorithm.support; T;PLUjp}  
-'*<;]P+.  
import org.rut.util.algorithm.SortUtil; 01RW|rN  
H}CmSo8&  
/** m$pRA0s2`  
* @author treeroot [!uVo>Q4  
* @since 2006-2-2 ^1_[UG  
* @version 1.0 @*=5a (#  
*/ d(b~s2\i  
public class ImprovedQuickSort implements SortUtil.Sort { U+E9l?4R  
n3-VqYUP  
private static int MAX_STACK_SIZE=4096; 1O,8=,K2a  
private static int THRESHOLD=10; #!#s7^%K&  
/* (non-Javadoc) @+y,E-YTdV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m] -cRf)9  
*/ 3r,Kt&2$  
public void sort(int[] data) { #Oq.}x?i  
int[] stack=new int[MAX_STACK_SIZE];  |*-<G3@  
<viC~=k;  
int top=-1; > XM]UdP  
int pivot; :Y9/} b{  
int pivotIndex,l,r; *_}0vd  
_bgv +/  
stack[++top]=0; YGc:84S  
stack[++top]=data.length-1; )_4()#3  
!<~cjgdx  
while(top>0){ {5d 5Y%&  
int j=stack[top--]; =2} kiLKO  
int i=stack[top--]; pe3;pRh'  
),xD5~_=q  
pivotIndex=(i+j)/2; &"J;  
pivot=data[pivotIndex]; wg\ p&avvb  
H5:f&m  
SortUtil.swap(data,pivotIndex,j); )t\aB_ =  
Ve)BF1YG  
file://partition z%lJWvaA7  
l=i-1; =]"I0G-s!  
r=j; |z:4T%ES  
do{ [9NrPm3d  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 0 ?gHRdU"  
SortUtil.swap(data,l,r); L2~'Z'q  
} e :C4f  
while(l SortUtil.swap(data,l,r); nf1 `)tXG  
SortUtil.swap(data,l,j); P$*Ngt  
Sw5-^2x0'  
if((l-i)>THRESHOLD){ B_b5&M@  
stack[++top]=i; [8[<4~{  
stack[++top]=l-1; Y#=MN~##t  
} T5.^ w  
if((j-l)>THRESHOLD){ m&'!^{av  
stack[++top]=l+1; ,j.bdlI#  
stack[++top]=j; jcBZ#|B7;  
} n5IQKYr g  
V RD^>Gi  
} MHye!T6fO\  
file://new InsertSort().sort(data); 2\gIjXX"  
insertSort(data); $z 5kA9  
} ;_E|I=%'E  
/** 8VO]; +N  
* @param data P*VZ$bUe5@  
*/ zZ<*  
private void insertSort(int[] data) { ~vM99hW  
int temp; }@tgc?C D  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); jh`[ Y7RJO  
} rzLW @k  
} zEukEA^9`  
} {s*2d P)  
#k`gm)|  
} 8?YeaMIBB  
q(~|roKA(  
归并排序:  jIH^  
uI%7jA~@  
package org.rut.util.algorithm.support; <1<xSr  
A=p'`]Yld  
import org.rut.util.algorithm.SortUtil; w1aoEo"S  
ylQj2B,CB  
/** fBv: TC%  
* @author treeroot [ K'gvLt1  
* @since 2006-2-2 / !MKijI  
* @version 1.0 &;L=f;   
*/ ^w<aS w  
public class MergeSort implements SortUtil.Sort{ V'MY+#  
yBIX<P)vE'  
/* (non-Javadoc) yTZ o4c "  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9|v%bO  
*/ }^p<Y5{b  
public void sort(int[] data) { oM Z94 , 3  
int[] temp=new int[data.length]; |\G^:V[.  
mergeSort(data,temp,0,data.length-1); ACZK]~Y'N*  
} VY+P c/b  
yO!M$aOn/  
private void mergeSort(int[] data,int[] temp,int l,int r){ J|%bRLX@>  
int mid=(l+r)/2; '\xE56v)F  
if(l==r) return ; Ot:}Ncq^\O  
mergeSort(data,temp,l,mid); /7:+.#Ag`  
mergeSort(data,temp,mid+1,r); fmc\Li  
for(int i=l;i<=r;i++){ 5$N#=i`V  
temp=data; e3~{l~ Rb  
} h,]VWG  
int i1=l;  [)~1Lu  
int i2=mid+1; v}d)uPl} ;  
for(int cur=l;cur<=r;cur++){ G'PZ=+!XO/  
if(i1==mid+1) }*xjO/Ey  
data[cur]=temp[i2++]; "d0=uHd5\  
else if(i2>r) ?# _{h  
data[cur]=temp[i1++]; nhjT2Sl  
else if(temp[i1] data[cur]=temp[i1++]; C])s'XTs  
else N)R5#JX  
data[cur]=temp[i2++]; *L$_80  
} fF r9]  
} k{N!}%*2  
7}6CUo  
}  ms&1P  
+{V`{'  
改进后的归并排序: v~x4Y,m%  
OHsA]7S  
package org.rut.util.algorithm.support; #RaqNu  
Ef28  
import org.rut.util.algorithm.SortUtil; *KY:U&*  
xz.Jmv  
/** m|c [C\)By  
* @author treeroot #vga qe9  
* @since 2006-2-2 :Q ]"dbY^  
* @version 1.0 NlKVl~_ C  
*/ ^7YNM<_%@  
public class ImprovedMergeSort implements SortUtil.Sort { )Se$N6u-  
m;MJ{"@A'  
private static final int THRESHOLD = 10; Z${eDl6i  
gBcs  
/* ; teM^zyI  
* (non-Javadoc) ] S[?tn  
* 0F/[GZ<k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Bdb}4X rL  
*/ iRlZWgj4^  
public void sort(int[] data) { ~"SQwE|  
int[] temp=new int[data.length]; Y7r;}^+WY  
mergeSort(data,temp,0,data.length-1); }l[e@6r F  
} seBmhe5qR  
LSJ.pBl\X  
private void mergeSort(int[] data, int[] temp, int l, int r) { 4_ U"M@  
int i, j, k; dgoAaS2M  
int mid = (l + r) / 2; OoH-E.lp  
if (l == r) W.jXO"pN  
return; .O5V;&,  
if ((mid - l) >= THRESHOLD) m:[I$b6AY  
mergeSort(data, temp, l, mid); Q [rZ1z  
else H)7v$A,5%  
insertSort(data, l, mid - l + 1);  ID,_0b  
if ((r - mid) > THRESHOLD) 9,`i[Dzp  
mergeSort(data, temp, mid + 1, r); rVoV@,P  
else T>rmm7F  
insertSort(data, mid + 1, r - mid); V@#oQi*  
PDuBf&/e  
for (i = l; i <= mid; i++) { % _E?3  
temp = data; ~o"=4q`>  
} d-+jb<C&  
for (j = 1; j <= r - mid; j++) { 3-{BXht)  
temp[r - j + 1] = data[j + mid]; 4dPTrBQ?  
} n{sk  
int a = temp[l]; &|#[.ti1  
int b = temp[r]; xwof[BnEZ  
for (i = l, j = r, k = l; k <= r; k++) { N\g=9o|Q  
if (a < b) { L#byYB;E{  
data[k] = temp[i++]; *S:~U  
a = temp; 89(qU  
} else { 6` TwP\!$/  
data[k] = temp[j--]; Z}uY%]  
b = temp[j]; )-Hs]D:  
} }" vxYB!h3  
} wb?k  
} ge GhM>G  
[=q/f2_1.  
/** =N\; ?eF(  
* @param data D4 8e30  
* @param l ?8"* B^*Sh  
* @param i 9>S)*lU&s  
*/ -GPJ,S V>  
private void insertSort(int[] data, int start, int len) { Nyy&'\`!  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); jo<xrn\  
} HC6U_d1-6  
} EXr2d"  
} #[{{&sN  
} EpMxq7*  
>U{iof<  
堆排序: /)Cfm1$ic  
VbvP!<8  
package org.rut.util.algorithm.support; T3{~f  
/h+ W L  
import org.rut.util.algorithm.SortUtil; },l i'r#p  
\j`0 f=z_  
/** <lf692.3  
* @author treeroot $e7%>*?m  
* @since 2006-2-2 BKg8p]`+  
* @version 1.0 .s*N1 U?h  
*/ `K.C>68  
public class HeapSort implements SortUtil.Sort{ x'x5tg  
xj>P5\mW#  
/* (non-Javadoc) fe/;U=te  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .b3h?R*&  
*/ JVX)>2&$  
public void sort(int[] data) { h{^v756L  
MaxHeap h=new MaxHeap(); >80k5$t  
h.init(data); : x&R'wX-  
for(int i=0;i h.remove(); Gc`PO  
System.arraycopy(h.queue,1,data,0,data.length); W<X3!zuKSg  
} )tI^2p{  
&<98n T  
private static class MaxHeap{ V&nB*U&s"  
SZ9Oz-?  
void init(int[] data){ :$b` n  
this.queue=new int[data.length+1]; *zrGrk:l  
for(int i=0;i queue[++size]=data; {S{%KkAV  
fixUp(size); rzAf  {2  
} m1pA]}Y/5o  
} @-dGZ 5  
9m)$^U>oz  
private int size=0; Hp=BnN  
-a)1L'R  
private int[] queue; A r]*?:4y[  
;^xM" {G8  
public int get() { $C7a #?YF,  
return queue[1]; +Pl)E5W!=`  
} :6nD"5(  
&Uam4'B6-  
public void remove() { bQautRW  
SortUtil.swap(queue,1,size--); HXKM<E{j  
fixDown(1); 6T$=(I <4  
} , yltt+ e  
file://fixdown AyO%,6p[  
private void fixDown(int k) { i#*[, P~  
int j; KBB)xez8  
while ((j = k << 1) <= size) { e^O:I  
if (j < size %26amp;%26amp; queue[j] j++; F;ttqL  
if (queue[k]>queue[j]) file://不用交换 x*vD^1"'P  
break; ~ps,U  
SortUtil.swap(queue,j,k); 'r]6 GC8Z$  
k = j; Z8$BgP  
} (uvQ/!  
} }( F:U#  
private void fixUp(int k) { z;1dMQ,#  
while (k > 1) { T$D(Y`zdn  
int j = k >> 1; D5c 8sB  
if (queue[j]>queue[k]) "Wg,]$IvU  
break; :1*E5pX0n  
SortUtil.swap(queue,j,k); $VHIU1JjZ  
k = j; -orRmn6}  
} %@vF%   
} 2X\Pw  
?A|JKOst]  
} wPM>-F  
6AJk6 W^Z  
} jlj ge=#c2  
RlL ]p`g  
SortUtil: l'(FM^8jv  
[y9a.*]u/@  
package org.rut.util.algorithm; .gg0rTf=-  
6U !P8q  
import org.rut.util.algorithm.support.BubbleSort; l%EvXdZuOy  
import org.rut.util.algorithm.support.HeapSort; DSwb8q  
import org.rut.util.algorithm.support.ImprovedMergeSort; X=whZ\EZ  
import org.rut.util.algorithm.support.ImprovedQuickSort; AE7 7i,Xa  
import org.rut.util.algorithm.support.InsertSort; N4ZV+ |  
import org.rut.util.algorithm.support.MergeSort; ({j8|{)+  
import org.rut.util.algorithm.support.QuickSort; ?2&= +QaT  
import org.rut.util.algorithm.support.SelectionSort; dHIk3j-!  
import org.rut.util.algorithm.support.ShellSort; T<0r,  
HQP.7.w7 5  
/** Li6|c*K'  
* @author treeroot MMFg{8  
* @since 2006-2-2 G*N[tw  
* @version 1.0 `Qo37B2  
*/ Mm@G{J\\  
public class SortUtil { |)!f".`  
public final static int INSERT = 1; .3C::~:  
public final static int BUBBLE = 2; qqw P4ceG  
public final static int SELECTION = 3; ,kJ7c;:i  
public final static int SHELL = 4; >O\+9T@  
public final static int QUICK = 5; +u Iq]tqe  
public final static int IMPROVED_QUICK = 6; kC.!cPd  
public final static int MERGE = 7; u$R5Q{H_  
public final static int IMPROVED_MERGE = 8; 5c]:/9&  
public final static int HEAP = 9; $97O7j@  
/8e}c`  
public static void sort(int[] data) { cRf F!EV  
sort(data, IMPROVED_QUICK); X~jdOaq{F:  
}  c`xNTr01  
private static String[] name={ G"?7 Z&+  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" *eoH"UFYQ#  
}; U/enq,-F^  
0]SWyC :  
private static Sort[] impl=new Sort[]{ ikc1,o  
new InsertSort(), ~QbHp|g  
new BubbleSort(), P_5aHeiJ  
new SelectionSort(), qhY+<S9  
new ShellSort(), wL8j i>"  
new QuickSort(), $L= Dky7  
new ImprovedQuickSort(), /7D5I\  
new MergeSort(), .JLJ(WM  
new ImprovedMergeSort(), *gwaW!=  
new HeapSort() 44*#qLN  
}; @6G)(NGD  
OY{fxBb  
public static String toString(int algorithm){ ;"nO'wN:h  
return name[algorithm-1]; >"2jCR$/  
} i-wRwl4aEF  
!-}Q{<2@W  
public static void sort(int[] data, int algorithm) { I9Ohz!RQ  
impl[algorithm-1].sort(data); IVh5SS  
} /GGyM]k3  
QWOPCoUet  
public static interface Sort { <5E'`T  
public void sort(int[] data); ch8VJ^%Ra1  
} 4u iq'-  
i6V$mhL  
public static void swap(int[] data, int i, int j) { 6#U~>r/  
int temp = data; !tTv$L>  
data = data[j];  ~frsgHW  
data[j] = temp; 68z#9}  
} Sqn>L`Lz  
} ?IAu,s*u  
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3+5=?,请输入中文答案:八 正确答案:八