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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。 ^`[<%.  
插入排序: [C/{ru&E  
2^=8~I!n&  
package org.rut.util.algorithm.support; ucJ}KMz  
Ifokg~X~G  
import org.rut.util.algorithm.SortUtil; njZJp|y6  
/** \:g\?[  
* @author treeroot 0CvGpM,  
* @since 2006-2-2 01&@8z'E  
* @version 1.0 2acT w#  
*/ 'd|!Hr<2  
public class InsertSort implements SortUtil.Sort{ BaWU[*  
*8_Dn}u?Jx  
/* (non-Javadoc) 2+/r~LwbK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dW2 2v!  
*/ fk9q3  
public void sort(int[] data) { -G~/ GO  
int temp; RU=\eD  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); D@O5Gd  
} _#1EbvO*l  
} 5 NC77}^.  
} t Davp:M1v  
3:G$Y: #P  
} m[%':^vSr  
?6\N&MTF  
冒泡排序: mK/E1a)AG3  
d'&OEGb<  
package org.rut.util.algorithm.support; jhPbh5E  
teI?.M9r  
import org.rut.util.algorithm.SortUtil; xC9{hXg!  
vS"h`pL  
/** X-X`Z`o  
* @author treeroot =1k%T{>  
* @since 2006-2-2 M7T*J>i  
* @version 1.0 }]#z0'Aqsu  
*/ k<P`  
public class BubbleSort implements SortUtil.Sort{ *~YdL7f)J  
/CH]'u^j  
/* (non-Javadoc) 6"+9$nFyW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?A3u2-  
*/ o>nw~_ H\  
public void sort(int[] data) { IN@o9pUjV  
int temp; h-|IZ}F7  
for(int i=0;i for(int j=data.length-1;j>i;j--){ v%c/eAF  
if(data[j] SortUtil.swap(data,j,j-1); .vctuy&  
} G'u[0>  
} U?d  I  
} _VRxI4q  
} *N4/M%1P  
5|~nX8>  
} 6K )K%a,9  
AE+BrN +"2  
选择排序: H2H[DVKv  
XI |k,Ko<  
package org.rut.util.algorithm.support; d=meh4Y  
%[5GGd5w  
import org.rut.util.algorithm.SortUtil; ke!  
D/Ok  
/** _3D9>8tzE7  
* @author treeroot ^ >&#F[aT  
* @since 2006-2-2 @C!&lrf3  
* @version 1.0 \q*-9_M  
*/ @"BhKUoV$K  
public class SelectionSort implements SortUtil.Sort { X(eW+,H  
Qu,R6G  
/* +lfO4^V  
* (non-Javadoc) %gs?~Xl)]  
* mj?Gc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (sQXfeMz  
*/ DQ3 L=  
public void sort(int[] data) { `"[qb ?z  
int temp; vb?.`B_>&  
for (int i = 0; i < data.length; i++) { c_S~{a44Ud  
int lowIndex = i; .)$MZyo  
for (int j = data.length - 1; j > i; j--) { dt@c,McN|Q  
if (data[j] < data[lowIndex]) { zCQP9oK!  
lowIndex = j; T*SLM"x  
} 54Rp0o tv  
} |&{S ~^$  
SortUtil.swap(data,i,lowIndex); M49l2x=]9  
} :N_]*>  
} >qOG^{&x  
Z'j[N4%BK  
} qEXN} Pq<  
q4Wr$T$gs=  
Shell排序: M_Ag *?2I  
De^:9<{jc  
package org.rut.util.algorithm.support; [520!JhZY  
\eNB L[  
import org.rut.util.algorithm.SortUtil; ~  z3J4s  
>W8"Ar  
/** 1P[x.t#  
* @author treeroot UO&$1rV  
* @since 2006-2-2 >V?0#f45@  
* @version 1.0 h'};spv  
*/ (E)hEQ@8  
public class ShellSort implements SortUtil.Sort{ `7w-_o %  
+a^gC  
/* (non-Javadoc) ^~-YS-.J#,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _~;%zFX  
*/ vm[*+&\2  
public void sort(int[] data) { 7@>/O)>(AS  
for(int i=data.length/2;i>2;i/=2){ u>.a;BO  
for(int j=0;j insertSort(data,j,i); G 3,v'D5  
} @L~erg>8=  
} ]"HaE-`%  
insertSort(data,0,1); !CX WoM  
} GW'v\O  
+pme]V|<  
/** ;veD?|  
* @param data "r_wgl%  
* @param j oRSA&h Ss  
* @param i ZHN'j] ?  
*/ AK,'KO%{=  
private void insertSort(int[] data, int start, int inc) { ~?Ky{jah:^  
int temp; eGq7+  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 6QY;t:/<  
} P9'` 2c   
} PIa!N Py  
} ~qeFSU(  
tF} ^  
} }}$@Tij19[  
Znb7OF^#"  
快速排序: O# ZZ PJ"  
QHZ",1F  
package org.rut.util.algorithm.support; o zn&>k  
PjEJ C@n  
import org.rut.util.algorithm.SortUtil; 1J"9Y81   
$Q8 &TM}E  
/** 5[SwF& zZ  
* @author treeroot S Dil\x  
* @since 2006-2-2 9/{zS3h3  
* @version 1.0 8!Wh`n<  
*/ ').) 0;  
public class QuickSort implements SortUtil.Sort{ \ m~?yq8H  
Zf@B< m  
/* (non-Javadoc) 30uPDDvar  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3._ ep  
*/ 6 Ln~b<I  
public void sort(int[] data) { T9Q3I  
quickSort(data,0,data.length-1); \\<=J[R.M  
}  &Q~W{.  
private void quickSort(int[] data,int i,int j){ iOURS  
int pivotIndex=(i+j)/2; w'(/dr  
file://swap Xj/z),  
SortUtil.swap(data,pivotIndex,j); 4($"4>BA  
n_km]~  
int k=partition(data,i-1,j,data[j]); f; |fS~  
SortUtil.swap(data,k,j); zZCRej  
if((k-i)>1) quickSort(data,i,k-1); :}v-+eIQ  
if((j-k)>1) quickSort(data,k+1,j); ;C$+8%P4  
i>YQ<A1  
} - C q;  
/** R>"Fc/{y  
* @param data e9h@G#  
* @param i Yw3'9m^  
* @param j (8h4\utA  
* @return W]ca~%r  
*/ g) u%?T  
private int partition(int[] data, int l, int r,int pivot) { E^F<"mL*  
do{ 50N4J  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); YkWHI (p  
SortUtil.swap(data,l,r); h7"U1'b  
} ( 4L/I  
while(l SortUtil.swap(data,l,r); BM,hcT r?  
return l; v{a%TA9-  
} Q!1;xw~  
WZNq!K H  
} &[-(=43@  
xeU|5-d'  
改进后的快速排序: ,O5X80'.g  
zg<-%r'$  
package org.rut.util.algorithm.support; . |T=T0^  
B]"`}jn  
import org.rut.util.algorithm.SortUtil; ja_8n["z  
]WDmx$"&e  
/** ^b+>r  
* @author treeroot 6*9 wGLE  
* @since 2006-2-2 \QK@wgu  
* @version 1.0 S"Cz. bv  
*/ Kt_oo[ey{  
public class ImprovedQuickSort implements SortUtil.Sort { +r8bGS]ki  
Res U5Ce~  
private static int MAX_STACK_SIZE=4096; _ Ncbo#G  
private static int THRESHOLD=10; sh$-}1 ;  
/* (non-Javadoc) H>EM3cFU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TBBnsj6e  
*/ SU~a()"  
public void sort(int[] data) { SO0\d0?u  
int[] stack=new int[MAX_STACK_SIZE]; $~G,T g  
(E0   
int top=-1; j HHWq>=d  
int pivot; ]u_j6y!  
int pivotIndex,l,r; rY_~(?XS  
/YvXyi>^"%  
stack[++top]=0; Z ;.-UXat  
stack[++top]=data.length-1; ]5Uuz?:e  
BkB>eE1)Ea  
while(top>0){ 'V:Q :  
int j=stack[top--]; /88s~=  
int i=stack[top--]; 6^"QABc  
w== BSH[  
pivotIndex=(i+j)/2; 4!Js="  
pivot=data[pivotIndex]; .*zS2 z  
sxREk99lL  
SortUtil.swap(data,pivotIndex,j); BY6#dlDi  
o{s2T)2  
file://partition ,5n!a.T  
l=i-1; 5.~Je6K U  
r=j; '8X>,un  
do{ 1VX3pkUET  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ~wb1sn3  
SortUtil.swap(data,l,r); uDDa >Ka#+  
} m+Ye`]  
while(l SortUtil.swap(data,l,r); "<ZV'z  
SortUtil.swap(data,l,j); gpV4qDXV  
\Z]+j@9  
if((l-i)>THRESHOLD){ a$My6Qa#  
stack[++top]=i; uks75W!}U  
stack[++top]=l-1; A>@#eyB  
} @YI{E*?S  
if((j-l)>THRESHOLD){ > {*cW  
stack[++top]=l+1; %v0M~J}+  
stack[++top]=j; QJ2]8K)+C  
} i 9) G t  
v/`D0g-uX)  
} (u,)v_Oo]a  
file://new InsertSort().sort(data); (0$~T}lH  
insertSort(data); }\"EI<$s  
} 3Zb%-_%j  
/** ]" 'yf;g  
* @param data @Po5AK3cy  
*/ iE~!?N|a3  
private void insertSort(int[] data) { -N45ni87  
int temp; w+br)  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); DB'0  
} E`IXBI  
} Vm[Rp, "  
} .a*?Pal@@  
N"S`9B1eD(  
} pi"H?EHk  
INg0[Lpc  
归并排序: sU_K^=6*  
f@OH~4FG  
package org.rut.util.algorithm.support; ;,4*uU'vq  
}%< ?]  
import org.rut.util.algorithm.SortUtil; D p'urf\*$  
BPY7O  
/** ;KL7SM%g4  
* @author treeroot 11H`WOTQF  
* @since 2006-2-2 NdXHpq;  
* @version 1.0 CsO!Y\'FY  
*/ Y+?QHtZL  
public class MergeSort implements SortUtil.Sort{ ewMVUq*:  
w 3t,S3!  
/* (non-Javadoc) mrTf[ "K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ni_H1G  
*/ @ st>#]i4  
public void sort(int[] data) { dN{At-  
int[] temp=new int[data.length]; y~9wxK  
mergeSort(data,temp,0,data.length-1); O<m46mwM  
} 4 2Z:J 0  
|9E:S  
private void mergeSort(int[] data,int[] temp,int l,int r){ 8em'7hR9  
int mid=(l+r)/2; TDh)}Ms  
if(l==r) return ; +IdM|4$\1  
mergeSort(data,temp,l,mid); q)q 3p  
mergeSort(data,temp,mid+1,r); xWLvx'8W  
for(int i=l;i<=r;i++){ CNB weM  
temp=data; I,?NYIG"(  
} )&c2+Y@  
int i1=l; c2E /-n4K@  
int i2=mid+1; A2'i~_e  
for(int cur=l;cur<=r;cur++){ -KiPqE%&G  
if(i1==mid+1) i fsh(^N  
data[cur]=temp[i2++]; $@AJg  
else if(i2>r) yzS]FwW7  
data[cur]=temp[i1++]; *6s_7{;  
else if(temp[i1] data[cur]=temp[i1++]; ~;"eNg{ T  
else (}A$4?  
data[cur]=temp[i2++]; k[Em~>m  
} ` H'G"V  
} ]iV ]7g8:  
< 5zR-UA>  
} oC&}lp)q  
`G\ qGllX  
改进后的归并排序: N*IroT3  
z|g2Q#$-\S  
package org.rut.util.algorithm.support; 49qa  
e@'x7Zzh  
import org.rut.util.algorithm.SortUtil; \8{SQ%  
lu#a.41  
/** }z]d]  
* @author treeroot ?^&ih:"  
* @since 2006-2-2 Ac_P^  
* @version 1.0 IFLphm5  
*/ ql?w6qFs]  
public class ImprovedMergeSort implements SortUtil.Sort { |_53So: g  
> X~\(|EM  
private static final int THRESHOLD = 10; uLdHE5vr  
 5wK==hZ  
/* s< tG  
* (non-Javadoc) u Kx:7"KD  
* b_+o1Zy`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0|GYtnd  
*/ _/>ktYo:  
public void sort(int[] data) { "aGmv9\  
int[] temp=new int[data.length]; H1N@E}>|  
mergeSort(data,temp,0,data.length-1); (kL"*y/"p  
} @nH3nn  
\' O/3Y7?X  
private void mergeSort(int[] data, int[] temp, int l, int r) { frcAXh9  
int i, j, k; M"z=114  
int mid = (l + r) / 2; >N^<Q4%2  
if (l == r) cW3'057  
return; wSR|uh  
if ((mid - l) >= THRESHOLD) Zg+.`>z  
mergeSort(data, temp, l, mid); igu1s}F  
else { 4+/0\  
insertSort(data, l, mid - l + 1); :!i=g+e]  
if ((r - mid) > THRESHOLD) cS.@02~f"  
mergeSort(data, temp, mid + 1, r); 5<Kt"5Z%7  
else B)q}]Qn  
insertSort(data, mid + 1, r - mid); a^_K@  
U&3!=|j  
for (i = l; i <= mid; i++) { Y{dSQ|xz^  
temp = data; uQdeKp4(  
} 7w73,r/D8A  
for (j = 1; j <= r - mid; j++) { e1[ReZW  
temp[r - j + 1] = data[j + mid]; -Mo4`bN  
} c&;" Y{  
int a = temp[l]; dv. 77q  
int b = temp[r]; TOiLv.Dor  
for (i = l, j = r, k = l; k <= r; k++) { qO@vXuul,  
if (a < b) { [n9l[dN  
data[k] = temp[i++]; fw%p_Cm  
a = temp; C:1(<1K  
} else { a`Bp^(f}  
data[k] = temp[j--]; nOC\ =<Nsg  
b = temp[j]; B7Ket8<J  
} EWJB /iED  
} *twGIX  
} <MEm+8e/s6  
P$'PB*5d|  
/** TTG=7x:3  
* @param data Bo:epus}\  
* @param l _JC*4  
* @param i s(_z1  
*/ ?g1eW q&  
private void insertSort(int[] data, int start, int len) { t__f=QB/  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 8j Cho  
} qiOtbH=  
} Y*xgY*K  
} ,DEq"VW_  
} .BxI~d^  
<.`i,|?MHS  
堆排序: wPI!i K@Ro  
t %u0=V  
package org.rut.util.algorithm.support; L#`X ]E  
J@_M%eN  
import org.rut.util.algorithm.SortUtil; C.4(8~Y=~  
EG4~[5[YgI  
/** `n,RC2yo  
* @author treeroot Gd!_9S`68  
* @since 2006-2-2 km>ZhsqD  
* @version 1.0 /Ey%aA4v  
*/ =U84*HAv  
public class HeapSort implements SortUtil.Sort{ $`OyGeq"T  
d/GSG%zB  
/* (non-Javadoc) @o[ZJ4>*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m 70r'b]  
*/ Z6B$\Q5Od  
public void sort(int[] data) { R1JD{  
MaxHeap h=new MaxHeap(); $\/i t  
h.init(data); +PPQ"#1pS  
for(int i=0;i h.remove(); }^I36$\  
System.arraycopy(h.queue,1,data,0,data.length); o4: e1  
} 548L^"D  
/%&5Iq\:vA  
private static class MaxHeap{ 6[t(FcS  
7 @\i5  
void init(int[] data){ p` ~=v4;b  
this.queue=new int[data.length+1]; "3_X$`v"!  
for(int i=0;i queue[++size]=data; t=lDN'\P  
fixUp(size); w[a(I} x  
} 5_A*I C]  
} Na`> pH  
( x% 4*  
private int size=0; AQ FnS&Y  
b~ )@e9  
private int[] queue; "} :CM_  
lDBAei3iB  
public int get() { YuuTLX%3  
return queue[1]; ^coCsV^CW"  
} 7 cV G?Wr  
+Zi+ /9Z(H  
public void remove() { )Q9Qo)D T  
SortUtil.swap(queue,1,size--); [ 1G wcXr  
fixDown(1); L'Iw9RAJ  
} C D6N8n]  
file://fixdown z,ryY'ua/I  
private void fixDown(int k) { 1N65 M=)  
int j; ~%lUzabMa  
while ((j = k << 1) <= size) { fAkfN H6  
if (j < size %26amp;%26amp; queue[j] j++; U=%(kOx  
if (queue[k]>queue[j]) file://不用交换 [PXq<ST  
break; #P!<u Lc%  
SortUtil.swap(queue,j,k); Sg%s\p]N_#  
k = j; ~jJ.E_i  
} /0>'ZzjV,  
} 6RIbsy  
private void fixUp(int k) { ; Ows8  
while (k > 1) { FD!8o  
int j = k >> 1; 6yYjZ<  
if (queue[j]>queue[k]) %qsl<_&  
break; ] 0L=+=w  
SortUtil.swap(queue,j,k); ZweAY.]e  
k = j; IjOBY  
}  &I-T  
} kE6/d,  
RU#}!Kq  
} &b>&XMIK  
iN[6}V6Sm  
} )AEtW[~D  
bGB$a0  
SortUtil: >aVtYp B  
k)z>9z%D  
package org.rut.util.algorithm; AEM;ZQU  
aZo}Ix:/  
import org.rut.util.algorithm.support.BubbleSort; %Unwh1VG  
import org.rut.util.algorithm.support.HeapSort; |3FGMg%  
import org.rut.util.algorithm.support.ImprovedMergeSort; 5'DY)s-K  
import org.rut.util.algorithm.support.ImprovedQuickSort; LV1drc  
import org.rut.util.algorithm.support.InsertSort; iM7 ^  
import org.rut.util.algorithm.support.MergeSort; UM0Ws|qx&  
import org.rut.util.algorithm.support.QuickSort; 0N)DHD?U  
import org.rut.util.algorithm.support.SelectionSort; T_s09Wl  
import org.rut.util.algorithm.support.ShellSort; \ ^pc"?Rc  
dYOY8r/  
/** Mb"y{Fox  
* @author treeroot k8J zey]X  
* @since 2006-2-2 oM>UIDCY_v  
* @version 1.0 AMB{Fssz  
*/ sWse (_2  
public class SortUtil {  mVS^HQ:  
public final static int INSERT = 1; Hr=|xw8.  
public final static int BUBBLE = 2; ,%A|:T]  
public final static int SELECTION = 3; #mJRL[V5^  
public final static int SHELL = 4; X'\h^\yOo  
public final static int QUICK = 5; R<I#. KD  
public final static int IMPROVED_QUICK = 6; z.(DDj  
public final static int MERGE = 7; lq.]@zlSO  
public final static int IMPROVED_MERGE = 8; k(7Q\JKE  
public final static int HEAP = 9; H_XspiB@  
*MlEfmB(  
public static void sort(int[] data) { PepR ]ym  
sort(data, IMPROVED_QUICK); g/68& M  
} gREk,4DAv  
private static String[] name={ s5G`?/  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" }^Sk.:;n3  
}; S W6oaa81  
K0oF=|  
private static Sort[] impl=new Sort[]{ x R$T/]/  
new InsertSort(), f`;w@gR`=  
new BubbleSort(), bbjEQby  
new SelectionSort(), X}]A_G  
new ShellSort(), OqRRf  
new QuickSort(), ]zAwKuIK  
new ImprovedQuickSort(), u{HO6 s\S  
new MergeSort(), yK&  
new ImprovedMergeSort(), Ad,n+%"e  
new HeapSort() QEut@L  
}; NCT:!&  
hP'4PLK  
public static String toString(int algorithm){ Tc"J(GWG  
return name[algorithm-1]; 7vRp<  
} {U>N*&_`  
qe(gKKA%q  
public static void sort(int[] data, int algorithm) { 7@g0>1Fz  
impl[algorithm-1].sort(data); RhB)AUAj  
} %rhZH^2  
iF +@aA  
public static interface Sort { }=\?]9`  
public void sort(int[] data); CV=qcD  
} 21Dc.t{  
"l-#v| 54  
public static void swap(int[] data, int i, int j) { WcT= 5G  
int temp = data; u23_*W\  
data = data[j]; x'\C'zeF  
data[j] = temp; g yV>k=B  
} 'wYIJK~1  
} /TPtPq<7:#  
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