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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。 5 1N/XEk  
插入排序: Ir-QD !!<  
Qv`: E   
package org.rut.util.algorithm.support; S?6 -I,]h  
s)fahc(@E  
import org.rut.util.algorithm.SortUtil; Q@W!6]*\  
/** =)G]\W)m  
* @author treeroot 6.a5%:  
* @since 2006-2-2 6"+9$nFyW  
* @version 1.0 ?A3u2-  
*/ o>nw~_ H\  
public class InsertSort implements SortUtil.Sort{ IN@o9pUjV  
h-|IZ}F7  
/* (non-Javadoc) v%c/eAF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7M _ mR Vh  
*/ zRd.!Rv  
public void sort(int[] data) { R?;mu^B  
int temp; "G~!J\  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); " dGN0i  
} cWG%>.`5r  
} mQ<4(qd)  
} .p.( \5Fo  
)hl7)~S<  
} 10h; N[  
|5%T)  
冒泡排序: by0K:*C  
x`FTy&g  
package org.rut.util.algorithm.support; + kT ]qH  
uY(8KW  
import org.rut.util.algorithm.SortUtil; @87Y/_l  
W!R0:-  
/** :<bhQY  
* @author treeroot |O6/p7+.  
* @since 2006-2-2 M)!"R [V  
* @version 1.0 N*hV/"joZ  
*/ 7G^Q2w  
public class BubbleSort implements SortUtil.Sort{ *r[V[9+y-D  
kX+9U"` C  
/* (non-Javadoc) :*&c'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d/jP2uu A  
*/ `A%WCd60Tc  
public void sort(int[] data) { tc/  
int temp; =Gu&0f  
for(int i=0;i for(int j=data.length-1;j>i;j--){ S5u$I  
if(data[j] SortUtil.swap(data,j,j-1); dt@c,McN|Q  
} zCQP9oK!  
} T*SLM"x  
} 54Rp0o tv  
} |&{S ~^$  
=R' O5J  
} n42\ty9  
_tX=xAO9  
选择排序: Y2XxfZ j  
~-6_-Y|  
package org.rut.util.algorithm.support; Y%kOq`uT=n  
vpf.0!zh  
import org.rut.util.algorithm.SortUtil; f,E7eL@  
De^:9<{jc  
/** [520!JhZY  
* @author treeroot \eNB L[  
* @since 2006-2-2 M;Pry 3J  
* @version 1.0 7 s{vou  
*/ UO&$1rV  
public class SelectionSort implements SortUtil.Sort { CEI"p2  
* 30K}&T  
/* O=V_ 7I5  
* (non-Javadoc) RqGX(Iuv  
* x55W"q7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?RS:I%bL  
*/ BCe'J!  
public void sort(int[] data) { ^Z#G_%\Y:  
int temp; wEM=Tr/h  
for (int i = 0; i < data.length; i++) { YPI,u7-  
int lowIndex = i; " (O3B  
for (int j = data.length - 1; j > i; j--) { )dX(0E4Td/  
if (data[j] < data[lowIndex]) { ,3 /o7'  
lowIndex = j; Sx QA*}N  
} *|g[Mn  
} 2[Lv_<i|  
SortUtil.swap(data,i,lowIndex); {R-o8N  
} O+|C<;K  
} `j@1]%&z  
m N}szW,  
} {eI'0==  
18sc|t  
Shell排序: 5]LWWjT  
5 | ,b  
package org.rut.util.algorithm.support; I/tMFg  
L55 UeP\  
import org.rut.util.algorithm.SortUtil; rkR5>S( 2M  
3~tu\TH6d  
/** :K]7(y7>  
* @author treeroot FMeBsI9pL  
* @since 2006-2-2 Wj^e)2%  
* @version 1.0 p__wBUB  
*/ ceE]^X;p  
public class ShellSort implements SortUtil.Sort{ G2kU_  
M)+pH  
/* (non-Javadoc) v;e8W9M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Jg[Ao#,==  
*/ g?v(>#i  
public void sort(int[] data) { >":xnX#  
for(int i=data.length/2;i>2;i/=2){ $U]T8;5Q  
for(int j=0;j insertSort(data,j,i); #DFi-o&-  
} NT*r7_e  
} |K Rt$t  
insertSort(data,0,1); Kus=.(  
} $\h-F8|JMX  
x+Xd7N1  
/** aqI"4v]~b  
* @param data 0?>(H(D^/  
* @param j zq{UkoME  
* @param i kJ FWk  
*/ /9G72AD!  
private void insertSort(int[] data, int start, int inc) { E|f[ #+:+  
int temp; Ha-]U:Vcx  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); U[f00m5{HV  
} {:uv}4Z  
} )e?&'wa>  
} lUs$I{2_  
g) oOravV  
} Mz6(M,hkq  
NUltuM  
快速排序: dJ6fPB|k  
YP_L~zZ  
package org.rut.util.algorithm.support; X%5eZ"1{x  
'^_u5Y]  
import org.rut.util.algorithm.SortUtil; 7:u+cv  
1]2]l*&3  
/** /VT/KT{  
* @author treeroot -Y/i h(I^  
* @since 2006-2-2 0W*{ 1W  
* @version 1.0 U*$P"sS`  
*/ |cma7q}p  
public class QuickSort implements SortUtil.Sort{ OY`B{jV-  
KN|<yF   
/* (non-Javadoc) }<A.zwB<i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EYq?NL='  
*/ 6^] |  
public void sort(int[] data) { <@-O 06  
quickSort(data,0,data.length-1); 8O,\8:I#  
} Yao}Xo9}  
private void quickSort(int[] data,int i,int j){ f?sm~PwC-  
int pivotIndex=(i+j)/2; |^1U<'oM#  
file://swap dyWp'vCQs\  
SortUtil.swap(data,pivotIndex,j); (CxA5u1|l  
1^WGJ"1  
int k=partition(data,i-1,j,data[j]); f*X CWr  
SortUtil.swap(data,k,j); R}=5:)%w  
if((k-i)>1) quickSort(data,i,k-1); C!5A,|DX  
if((j-k)>1) quickSort(data,k+1,j); 8~o']B;lJ  
7a'yO+7-)  
} C.92FiC  
/** !lgL=Ys(  
* @param data #,d~t  
* @param i %MjoY_<:_  
* @param j {'O><4  
* @return SO0\d0?u  
*/ $~G,T g  
private int partition(int[] data, int l, int r,int pivot) { (E0   
do{ j HHWq>=d  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ]u_j6y!  
SortUtil.swap(data,l,r); rY_~(?XS  
} 9Lb96K?=>  
while(l SortUtil.swap(data,l,r); nTqU~'d'  
return l; CjQO5  
} BkB>eE1)Ea  
\#9LwC"8;  
} MuY:(zC%  
>q:%?mi  
改进后的快速排序: crM5&L9zF  
@N>7+ 4  
package org.rut.util.algorithm.support; yV{B,T`W  
PdcIHN  
import org.rut.util.algorithm.SortUtil; A#"Wk]jX  
2!/Kt O)i^  
/** wGArR7r  
* @author treeroot LlQsc{ Ddf  
* @since 2006-2-2 6L<:>55  
* @version 1.0 3^o(\=-JX  
*/ k6Kc{kY  
public class ImprovedQuickSort implements SortUtil.Sort { =:WZV8@%  
8v"rM >[  
private static int MAX_STACK_SIZE=4096; ebk>e*  
private static int THRESHOLD=10; EU?qLj':  
/* (non-Javadoc) {[o NUzcd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ff#7}9_mh  
*/ \Z]+j@9  
public void sort(int[] data) { ?gE=hh  
int[] stack=new int[MAX_STACK_SIZE]; RPz[3y  
]nTeTW  
int top=-1; <,]:jgX  
int pivot; JtL> mH  
int pivotIndex,l,r; t}q e_c  
Js,!G  
stack[++top]=0; p27Dc wov  
stack[++top]=data.length-1; )O1]|r7v  
i1 E|lp)  
while(top>0){ *'/,  
int j=stack[top--]; P>7Xbm,VP  
int i=stack[top--]; x>#{C,Fi  
W>@ti9\t  
pivotIndex=(i+j)/2; jdxHWkQ   
pivot=data[pivotIndex]; &BVHQ7[  
Lzh8-d=HQ  
SortUtil.swap(data,pivotIndex,j); xE1?)  
bwsKdh  
file://partition mk>; 3m*  
l=i-1; RaJTya^  
r=j; +MoUh'/u  
do{ hhTtxC<:  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); E=sh^Q(A  
SortUtil.swap(data,l,r); TjW!-s?S  
} `fBQ?[05.  
while(l SortUtil.swap(data,l,r); 5PeS/%uT@  
SortUtil.swap(data,l,j); !m@cTB7i   
fzSkl`K}  
if((l-i)>THRESHOLD){ /7AHd ;  
stack[++top]=i; BPY7O  
stack[++top]=l-1; nQF& ^1n  
} Qd} n4KF\  
if((j-l)>THRESHOLD){ @Kpm&vd(  
stack[++top]=l+1; ; vH2r~  
stack[++top]=j; 0]DOiA  
} %rW}x[M%w?  
my 'nDi  
} "<CM 'R  
file://new InsertSort().sort(data); gX}'b\zxC  
insertSort(data); ;2f=d_/x  
} n1-p/a.  
/** 2f,8Jnia  
* @param data ='7m$,{(Q[  
*/ -$d?e%}#  
private void insertSort(int[] data) { noZbsI4  
int temp; K.Xy:l*z  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); h3MdQlJ&  
} R3>q]  
} }LUvh  
} MP%#)O6  
'n &p5%  
} RNT9M:w  
?WI v4  
归并排序: NQdwj>_a  
x93@[B*%  
package org.rut.util.algorithm.support; |+cz\+  
t~+M>Fjm?d  
import org.rut.util.algorithm.SortUtil; Ua1&eC Zi  
'P.y?  
/** S <mZs;  
* @author treeroot jD S?p)&  
* @since 2006-2-2 y,D9O/VP  
* @version 1.0 aHhLz>H'  
*/  ?8>a;0  
public class MergeSort implements SortUtil.Sort{ 1c$pz:$vX  
o@Ye_aM~?Y  
/* (non-Javadoc) /J`}o}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dwA"QVp{  
*/ ,ri&zbB  
public void sort(int[] data) { RD`|Z~:q:K  
int[] temp=new int[data.length]; )vtbA=RH?  
mergeSort(data,temp,0,data.length-1); i~!g9o(  
} x\yM|WGL  
T8 FW(Gw#  
private void mergeSort(int[] data,int[] temp,int l,int r){ !yNU-/K  
int mid=(l+r)/2; (hc!!:N~q  
if(l==r) return ; N_%@_$3G]  
mergeSort(data,temp,l,mid); }e7Rpgu  
mergeSort(data,temp,mid+1,r); Wv4$Lgr  
for(int i=l;i<=r;i++){ (:iMs) iO{  
temp=data; \mb4leg5  
} 2[lP,;!  
int i1=l; }?m0bM  
int i2=mid+1; re/-Yu$'  
for(int cur=l;cur<=r;cur++){ }9OMXLbRv  
if(i1==mid+1) Xu{y5 N  
data[cur]=temp[i2++]; X9*n[ev  
else if(i2>r) lxn/97rA  
data[cur]=temp[i1++]; >N^<Q4%2  
else if(temp[i1] data[cur]=temp[i1++]; IOHWb&N6  
else XpAJP++  
data[cur]=temp[i2++]; VwR\"8r3  
} $WYt`U;*lj  
} ekx(i QA  
[if(B\&  
} `xM*cJTZ  
MTYV~S4/  
改进后的归并排序: ^#5'` #t  
9SC1A-nF  
package org.rut.util.algorithm.support; d V%o:@Z  
 (?Ku-k  
import org.rut.util.algorithm.SortUtil; /JNG}*  
AD   
/** J.iz%8  
* @author treeroot JuJW]E Q  
* @since 2006-2-2 Uw4iWcC  
* @version 1.0 BA a:!p  
*/ ,ei9 ?9J1  
public class ImprovedMergeSort implements SortUtil.Sort { 6*,55,y  
4K cEJlK5  
private static final int THRESHOLD = 10; F=F84 _+K  
ww|fqx?  
/* ^!tX+`,6^  
* (non-Javadoc) T"\d,ug5[  
* aT^ $'_ G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) | .+P ;g  
*/ 0+mR y57  
public void sort(int[] data) { EWJB /iED  
int[] temp=new int[data.length]; *twGIX  
mergeSort(data,temp,0,data.length-1); <MEm+8e/s6  
} P$'PB*5d|  
gj;gl ="3  
private void mergeSort(int[] data, int[] temp, int l, int r) { f@sC~A. 9\  
int i, j, k; mxqZj8VuH  
int mid = (l + r) / 2; Gza= 0  
if (l == r) R&1>\t  
return; IB|!51H  
if ((mid - l) >= THRESHOLD) kR+}7G+  
mergeSort(data, temp, l, mid); !>(uhuTBF  
else :V(C+bm *  
insertSort(data, l, mid - l + 1); WvU[9ME^)  
if ((r - mid) > THRESHOLD) X -1r$.  
mergeSort(data, temp, mid + 1, r); LR&MhG7  
else i, ^-9  
insertSort(data, mid + 1, r - mid); lLQcyi0  
-3(*4)h7  
for (i = l; i <= mid; i++) { PE{<' K\g  
temp = data; 1 F:bExQ  
} x|Uwk=;X|s  
for (j = 1; j <= r - mid; j++) { )d[n-Si  
temp[r - j + 1] = data[j + mid]; jP+{2)z"W  
} d8Vqmrc~  
int a = temp[l]; {X?Aj >l  
int b = temp[r]; D <~UaHfk  
for (i = l, j = r, k = l; k <= r; k++) { @zGF9O<3,@  
if (a < b) { M8lw; (  
data[k] = temp[i++]; n\9IRuYO  
a = temp; l_k:OZ  
} else {  XY)X-K$  
data[k] = temp[j--]; Q'U!  
b = temp[j]; gZHgL7@  
} $\/i t  
} +PPQ"#1pS  
} }^I36$\  
o4: e1  
/** 548L^"D  
* @param data /%&5Iq\:vA  
* @param l 6[t(FcS  
* @param i 7 @\i5  
*/ p` ~=v4;b  
private void insertSort(int[] data, int start, int len) { *X3wf`C?  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 7OLHYt9  
} AclK9+V  
} e R[B0;c  
} lOA EM  
} Y4YZM  
$,Q] GIC  
堆排序: )fo0YpE^|  
HH6n3c!:mm  
package org.rut.util.algorithm.support; E$_zBD%  
'Rnzu0<lF  
import org.rut.util.algorithm.SortUtil; #^9bBF/  
o5/BE`VD5c  
/** %,$xmoj9O]  
* @author treeroot Sv=e|!3f[k  
* @since 2006-2-2 #n&/v'!\  
* @version 1.0 y?cN  
*/ 0.m-}  
public class HeapSort implements SortUtil.Sort{ f0@*>  
#6~KO7}  
/* (non-Javadoc) 7.2G}O6$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RKzO$T  
*/ ZxO o&YR3  
public void sort(int[] data) { {zd[8TJ~xa  
MaxHeap h=new MaxHeap(); +DQUL|\  
h.init(data); 8@ f!,!Wn  
for(int i=0;i h.remove(); \v+>qY<q  
System.arraycopy(h.queue,1,data,0,data.length); :}36;n<['  
} {1=|H$wKg  
%4` U' j  
private static class MaxHeap{ AP z"k?D0  
tvn o3"  
void init(int[] data){ 3AENY@*  
this.queue=new int[data.length+1]; )cL(()N  
for(int i=0;i queue[++size]=data; C@;e<  
fixUp(size); He8]Eb  
} d<Lc&wlP  
} f5M;q;  
YXTV$A+lW  
private int size=0; +<$nZ=,hsy  
S/*\j7cj  
private int[] queue; @gqZiFM)  
W4.w  
public int get() { An}RD73!w  
return queue[1]; h+Lpj^<2a  
} {tOf0W|  
34CcZEQQ  
public void remove() { 4n.JRR&;  
SortUtil.swap(queue,1,size--); Kt qOA[6  
fixDown(1); ;t9!< L  
} UM0Ws|qx&  
file://fixdown D 9;pjY  
private void fixDown(int k) { vC1fKo\p  
int j; L9^ M?.a  
while ((j = k << 1) <= size) { &2%|?f|  
if (j < size %26amp;%26amp; queue[j] j++; izcjI.3e,  
if (queue[k]>queue[j]) file://不用交换 [QMN0#(h  
break; @x*xgf  
SortUtil.swap(queue,j,k); {m3#1iV9  
k = j; Y6Y"fb%K  
} C(h<s e?  
} i@D4bd9lR  
private void fixUp(int k) { m<#^c?u  
while (k > 1) { atd;)o0*0  
int j = k >> 1; ,j{tGj_  
if (queue[j]>queue[k]) EF$ASNh"  
break; UsA fZg8  
SortUtil.swap(queue,j,k); E,ilJl\  
k = j; 5|jY  
} t%e<]2-8  
} ]Hl{(v\H O  
:B=Gb8?  
} K@:omT  
.* `]x  
} @J>JZ7m]\  
<7)sS<I  
SortUtil: H}_R`S  
[%yj' )R/  
package org.rut.util.algorithm; teb(gUy}L6  
9%SC#V'  
import org.rut.util.algorithm.support.BubbleSort; 569p/?  
import org.rut.util.algorithm.support.HeapSort; ~}{_/8'5  
import org.rut.util.algorithm.support.ImprovedMergeSort; PP\ bDEPy  
import org.rut.util.algorithm.support.ImprovedQuickSort; -Op^3WWyY  
import org.rut.util.algorithm.support.InsertSort; jPo,mz&^  
import org.rut.util.algorithm.support.MergeSort; zp:QcL"  
import org.rut.util.algorithm.support.QuickSort; tBJ4lb  
import org.rut.util.algorithm.support.SelectionSort; s8's(*]  
import org.rut.util.algorithm.support.ShellSort; )2l @%?9  
Y j bp:  
/** { 7DXSe4  
* @author treeroot a-S tOO5s  
* @since 2006-2-2 IIT[^_g  
* @version 1.0 R|$b\3  
*/ iO Z#}"  
public class SortUtil { i?b9zn  
public final static int INSERT = 1; iF +@aA  
public final static int BUBBLE = 2; }=\?]9`  
public final static int SELECTION = 3; CV=qcD  
public final static int SHELL = 4; f|_\GVW  
public final static int QUICK = 5; < @GO]vY  
public final static int IMPROVED_QUICK = 6; WcT= 5G  
public final static int MERGE = 7; u23_*W\  
public final static int IMPROVED_MERGE = 8; x'\C'zeF  
public final static int HEAP = 9; g yV>k=B  
'wYIJK~1  
public static void sort(int[] data) { CLmo%"\ s  
sort(data, IMPROVED_QUICK); SWhzcqp  
} ;ow)N <Z  
private static String[] name={ uD?G\"L i  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" `9^+KK"  
}; <[ 2?~s  
ZI1]B944ni  
private static Sort[] impl=new Sort[]{ e-v|  
new InsertSort(), 'ZI8nMY  
new BubbleSort(), _x""-X~OL  
new SelectionSort(), sG_/E-%5'  
new ShellSort(), EN[T3 Y  
new QuickSort(), } LC  
new ImprovedQuickSort(), M ^o_='\bE  
new MergeSort(), _=Gj J~2n  
new ImprovedMergeSort(), p0Jr{hM  
new HeapSort() %F;BL8d  
}; ^+_rv  
|C [!A  
public static String toString(int algorithm){ q!$s<n  
return name[algorithm-1]; rAH!%~  
} bhqSqU}6~  
h_%q`y,  
public static void sort(int[] data, int algorithm) { .^Sgl o  
impl[algorithm-1].sort(data); 'ToE Y3  
} D.K""*ula  
7~Y\qJ4b  
public static interface Sort { !T{+s T  
public void sort(int[] data); )+G"57p  
} YB38K(  
Q^(CqQo!<  
public static void swap(int[] data, int i, int j) { kxMvOB$  
int temp = data; paqGW]  
data = data[j]; *N">93:  
data[j] = temp; n i#jAwkN5  
} 6"Uu;Q  
} uJw?5kEbv<  
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