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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。 6'6,ySo]  
插入排序: dA=T+u  
t:yJ~En]=  
package org.rut.util.algorithm.support; tq&CJvJ4  
A_}6J,*u  
import org.rut.util.algorithm.SortUtil; 0S$6j-"  
/** YJMaIFt  
* @author treeroot R(W}..U0R"  
* @since 2006-2-2 -,^Z5N#\|  
* @version 1.0 N5|wBm>m  
*/ \>p\~[cxt  
public class InsertSort implements SortUtil.Sort{ @@} ]qT*  
f&88N<)  
/* (non-Javadoc) @r9[&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GRj#1OqL  
*/ QrRnXlE M8  
public void sort(int[] data) { |eEXCn3{  
int temp; f/3rcYR;y  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); zsmlXyP'e!  
} 1y7FvD~v  
} jzAXC^FS  
} -@?4Tfl  
=v49[i  
}  MKZq*  
1}"Prx-  
冒泡排序: Bl/Z _@  
RAAu3QKu  
package org.rut.util.algorithm.support; NNn sq@?6  
5[|ZceY  
import org.rut.util.algorithm.SortUtil; 'NSfGC%7R  
u?lbC9}$  
/** 5 ]l8l+  
* @author treeroot TpAso[r  
* @since 2006-2-2 (;cvLop  
* @version 1.0 U]64HuL  
*/ %WAaoR&u  
public class BubbleSort implements SortUtil.Sort{ H rI(uZ]  
lCiRvh1K  
/* (non-Javadoc) 5"2pU{xmK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '-M9v3itC  
*/ yLEA bd%+  
public void sort(int[] data) { Pm== m9  
int temp; zp:EssO=Q  
for(int i=0;i for(int j=data.length-1;j>i;j--){ !A'3Mw\Nm  
if(data[j] SortUtil.swap(data,j,j-1); f=T&$tZ<  
} pz,iQUs _o  
} ?C*}NM  
}  wjfc9z  
} T/iZ"\(~w  
uow{a*q d6  
} |ohCA&k%;  
v9XevLs  
选择排序: Z^6qxZJ7  
33OkY C%e  
package org.rut.util.algorithm.support; ]3I@5}5%  
JlhI3`X;/  
import org.rut.util.algorithm.SortUtil; uh&Qdy!I  
6h{>U*N"&d  
/** gX;)A|9e  
* @author treeroot xyyEaB  
* @since 2006-2-2 UKzXz0  
* @version 1.0 ~w"e 2a  
*/ +r$M 9  
public class SelectionSort implements SortUtil.Sort { h_\OtoRa  
mV#U=zqb!S  
/* \VHRI<$+5  
* (non-Javadoc) 7[It  
*  .F/0:)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9a0|iy  
*/ UaXWHCm`  
public void sort(int[] data) { X{tfF!+iy  
int temp; rL|9Xru  
for (int i = 0; i < data.length; i++) { .9@y*_ 9  
int lowIndex = i; g![?P"i^t  
for (int j = data.length - 1; j > i; j--) { Hl=M{)q@   
if (data[j] < data[lowIndex]) { p61F@=EL  
lowIndex = j; @f`s%o  
} iG+=whvL  
} H/$oGhvl  
SortUtil.swap(data,i,lowIndex); '.IR|~Y  
} *s$:"g-  
} 37 d-!  
tLzKM+Ct#  
} = PIarUJ  
}$@E pM  
Shell排序: A}G>JL  
>N-l2?rE  
package org.rut.util.algorithm.support; ".sRi  
kS< 9cy[O  
import org.rut.util.algorithm.SortUtil; nJcY>Rp?  
`Tc"a_p9t  
/** Y%Tm `$^V  
* @author treeroot -~ H?R  
* @since 2006-2-2 {C5-M!D{<  
* @version 1.0 #D .hZ=!  
*/ |SuN3B4e  
public class ShellSort implements SortUtil.Sort{ l09SWug  
1-}M5]Y  
/* (non-Javadoc) T~)R,OA7m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l\ HtP7]  
*/ +%? \#EQJ  
public void sort(int[] data) { Y} crE/  
for(int i=data.length/2;i>2;i/=2){ y;=/S?L.:  
for(int j=0;j insertSort(data,j,i); "GB493=v  
} X.[8L^ldh  
} '4,>#D8@O  
insertSort(data,0,1); HiSNEp$-4$  
} .05x=28n%  
aPm2\Sq$  
/** O:jaA3  
* @param data gb}>xO  
* @param j dyVfDF  
* @param i ?b xa k  
*/ Pa-{bhllu)  
private void insertSort(int[] data, int start, int inc) { jO}<W1qy  
int temp; A 1B_EX.  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); s_cur-  
} KEo?Cy?%ff  
} /-&2>4I  
} ="P&!lu  
S=qx,<J 39  
} 2 >/}-a  
q@XxCP]  
快速排序: iyP0;$  
kerBy\^  
package org.rut.util.algorithm.support; 7uq^TO>9f  
Ny G?^  
import org.rut.util.algorithm.SortUtil; lK3{~ \J-  
@6%o0p9zz  
/** =i>i,>bv  
* @author treeroot gXe`G( w  
* @since 2006-2-2 !#dp [,nk  
* @version 1.0 `u$lSGl  
*/ Yz ? 8n  
public class QuickSort implements SortUtil.Sort{ FY"csZ  
TV~S#yg+H  
/* (non-Javadoc) 91M5F$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0N):8`dY  
*/ s3y"y_u  
public void sort(int[] data) { tf6 Zz[  
quickSort(data,0,data.length-1); =6gi4!hE  
} B~2M/&rM\  
private void quickSort(int[] data,int i,int j){ f7I!o, /  
int pivotIndex=(i+j)/2; -;iCe7|Twf  
file://swap ?63ep:QEk  
SortUtil.swap(data,pivotIndex,j); pMzlpmW;P  
p{[(4}ql  
int k=partition(data,i-1,j,data[j]); tgC)vZ&a  
SortUtil.swap(data,k,j); j> dL:V&`  
if((k-i)>1) quickSort(data,i,k-1); 3]h*6 V1$  
if((j-k)>1) quickSort(data,k+1,j); e#(X++G  
qv3% v3\4  
} w]O,xO  
/** n a+P|'6  
* @param data }s:~E2?In  
* @param i eDY)i9"W  
* @param j PLRMW 2  
* @return }-~LXL%!3  
*/ 3u[5T|D'  
private int partition(int[] data, int l, int r,int pivot) { 6&_K;  
do{ rY295Q  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Ca ?d8  
SortUtil.swap(data,l,r); FTWjIa/[  
} Kon|TeC>d  
while(l SortUtil.swap(data,l,r); lsKQZ@LN`  
return l; ,AwX7gx22  
} x+EEMv3u:  
8dwKJ3*.  
} IGF25-7B  
f0+vk'Z  
改进后的快速排序:  NR98]X  
:H>0/^Mg0  
package org.rut.util.algorithm.support; ftD(ed  
6@FGt3y  
import org.rut.util.algorithm.SortUtil; ,PeE'$q  
</D )i  
/** ~nb1c:F  
* @author treeroot TNlOj a:  
* @since 2006-2-2 .,\^{.E  
* @version 1.0 Iqq BUH  
*/ QBb%$_Z  
public class ImprovedQuickSort implements SortUtil.Sort { {!^0j{T  
*M'/z=V?%  
private static int MAX_STACK_SIZE=4096; dP=,<H#]m  
private static int THRESHOLD=10; V#X<Yt  
/* (non-Javadoc) Yb4%W-5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vr } -u  
*/ u,./,:O%=  
public void sort(int[] data) { #@J{ )  
int[] stack=new int[MAX_STACK_SIZE]; $'3'[Nr(;t  
N 5.kDT  
int top=-1; BH0s ` K"  
int pivot; : ZadPn56  
int pivotIndex,l,r; 7sU,<Z/D  
{Mc;B9W  
stack[++top]=0; j+("4b'  
stack[++top]=data.length-1; lr]C'dD  
>1$Vh=\OI  
while(top>0){ 'cA(-ghY/E  
int j=stack[top--]; .JV y}^Q\  
int i=stack[top--]; KpT=twcK  
 rp=Y }  
pivotIndex=(i+j)/2; w%-S5#  
pivot=data[pivotIndex]; f<M!L> +M6  
r9n:[A&HE  
SortUtil.swap(data,pivotIndex,j); Bo8NY!  
ef2)k4)"  
file://partition bWJ&SR>  
l=i-1; .$o A~  
r=j; hG >kx8h  
do{ 3 J5lz~6  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); >fzFNcO*  
SortUtil.swap(data,l,r); MqRJ:x  
} D B(!*6#?  
while(l SortUtil.swap(data,l,r); }8'b}7!  
SortUtil.swap(data,l,j); 6[-[6%o#z  
,n$NF0^l  
if((l-i)>THRESHOLD){  %e(DPX  
stack[++top]=i; YT6dI"48  
stack[++top]=l-1; O bc>f|l]  
} u}89v1._Jn  
if((j-l)>THRESHOLD){ q4Mv2SPT  
stack[++top]=l+1; m .R**g  
stack[++top]=j; 0+/ew8~$  
} a}X. ewg  
I.it4~]H  
} %Z*N /nU  
file://new InsertSort().sort(data); w<Bw2c  
insertSort(data); z fu)X!t^  
} U:bnX51D4  
/** )FN$Jlo  
* @param data E6zPN?\ <  
*/ D# gC-,  
private void insertSort(int[] data) { klnk{R.>|  
int temp; S|F:[(WaM  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^Hz1z_[X@  
} lN x7$z`  
} vsJDVJ +=  
} A=wG};%_  
)r?- _qj=  
} k; >Vh'=X  
D 4sp+   
归并排序: <6+T&Ov6  
QOY{j  
package org.rut.util.algorithm.support; ~_ u3_d.  
`1uGU[{x  
import org.rut.util.algorithm.SortUtil; k"6&&  
R?M>uaxn  
/** IyAD>Q^  
* @author treeroot @M"( r"ab  
* @since 2006-2-2 '$ [%x  
* @version 1.0 D 9UM8Hxi  
*/ k 7:Z\RGy  
public class MergeSort implements SortUtil.Sort{ U+zntB  
R2JPLvs  
/* (non-Javadoc) J$lfI^^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %M:$ML6b<  
*/ w~yC^`  
public void sort(int[] data) { zbgGK7  
int[] temp=new int[data.length]; kn/xt  
mergeSort(data,temp,0,data.length-1); f~7V<v  
} k8r1)B4ab  
Z\cD98B#  
private void mergeSort(int[] data,int[] temp,int l,int r){ ]r'D  
int mid=(l+r)/2; uW2  q\  
if(l==r) return ; h/6^>setz  
mergeSort(data,temp,l,mid); i!gS]?*DH  
mergeSort(data,temp,mid+1,r); 5vJxhBm/  
for(int i=l;i<=r;i++){ HiBI0)N}  
temp=data; F@mxd  
} L|B! ]}  
int i1=l; zrf tF2U  
int i2=mid+1; U uC-R)  
for(int cur=l;cur<=r;cur++){ VfUHqdg-  
if(i1==mid+1) $ Ggnn#  
data[cur]=temp[i2++]; 3W{ !\  
else if(i2>r) nLx|$=W  
data[cur]=temp[i1++]; 6OoOkNWF  
else if(temp[i1] data[cur]=temp[i1++]; 6b9J3~d\E  
else ;#9ioG x  
data[cur]=temp[i2++]; %> 5>wP   
} I?^(j;QpS  
} .h\Py[h<^  
|>Fz:b d  
} (][-()YV  
x=+>J$~Pb  
改进后的归并排序: xP/q[7>#Q  
g@T}h[  
package org.rut.util.algorithm.support; v\_\bT1  
Sp*4Z`^je  
import org.rut.util.algorithm.SortUtil; e\O-5hp7  
yDWBrN._  
/** #sxv?r  
* @author treeroot { {:Fs  
* @since 2006-2-2 %ZX9YuXQ  
* @version 1.0 :(wFNK/0{  
*/ a=`] L`|N  
public class ImprovedMergeSort implements SortUtil.Sort { /0$fYrg>J  
OzwJ 52  
private static final int THRESHOLD = 10; \j5`6}zm  
-m@PqJF^  
/* "eqzn KT%u  
* (non-Javadoc) 'GT^araz  
* '#=0q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *,IK4F6>:  
*/ - Ry+WS=  
public void sort(int[] data) { ;<_a ,5\Q  
int[] temp=new int[data.length]; r)OiiD"  
mergeSort(data,temp,0,data.length-1); -/V(Z+dj  
} E AZX  
[cco/=c  
private void mergeSort(int[] data, int[] temp, int l, int r) { lcy<taNu)  
int i, j, k; DR,7rT{$  
int mid = (l + r) / 2; '#h ORQB  
if (l == r) 5-y*]:g(  
return; r/HTkXs I  
if ((mid - l) >= THRESHOLD) O6vxp?:^  
mergeSort(data, temp, l, mid); /|<S D.:  
else =,h'}(z_  
insertSort(data, l, mid - l + 1); [`s0 L#  
if ((r - mid) > THRESHOLD) j--byk6PB  
mergeSort(data, temp, mid + 1, r); 6B|i-b $~  
else :`Ut.E~.  
insertSort(data, mid + 1, r - mid); ,.}%\GhY  
j/fniyJ)  
for (i = l; i <= mid; i++) { %ek0NBE7  
temp = data; nO!&;E&  
} RV);^, b  
for (j = 1; j <= r - mid; j++) { ar6+n^pi0]  
temp[r - j + 1] = data[j + mid]; |cgjn*a?M  
} k!}(a0h  
int a = temp[l]; 8A.7q  
int b = temp[r]; EmR82^_:  
for (i = l, j = r, k = l; k <= r; k++) { d~QM@<SV  
if (a < b) { w;j<$<4=7  
data[k] = temp[i++]; >TY;l3ew  
a = temp; _U-`/r o  
} else { 9} m?E<6&  
data[k] = temp[j--]; @!u{>!~0  
b = temp[j]; +L`}(yLJ)9  
} I:G8B5{J  
} {-8Nq`w  
} ^D6TeH  
goA=U  
/** elQjPvb  
* @param data Z\xnPhV  
* @param l yCav;ZS_  
* @param i `lWGwFgg(  
*/ I`H&b& .`  
private void insertSort(int[] data, int start, int len) { 8V 4e\q  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); xPPA8~Dm*  
} Y0T:%  
} W/hzo*o'g  
} r)>3YM5  
} v_Sa0}K9  
{H)hoAenA  
堆排序: 8FMxn{k2  
|Z{#DOT  
package org.rut.util.algorithm.support; KFwuz()7  
_uLpU4# ?  
import org.rut.util.algorithm.SortUtil; ?]$<Ufr  
<%Nf"p{K  
/** 0NGth(2  
* @author treeroot GIH{tr1:<  
* @since 2006-2-2 cWZITT{A  
* @version 1.0 nJ]7vj,rB  
*/ _.Hj:nFHz  
public class HeapSort implements SortUtil.Sort{ |+W{c`KL  
GEF's#YWK  
/* (non-Javadoc) Z@Zg3AVU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]tN)HRk1  
*/ `G1"&q,i  
public void sort(int[] data) { q i yK  
MaxHeap h=new MaxHeap(); ch]Qz[d  
h.init(data); DxNob-F r  
for(int i=0;i h.remove(); k>mXh{ (  
System.arraycopy(h.queue,1,data,0,data.length); z+7V}aPM  
} pxgf%P<7  
R}gdN-941  
private static class MaxHeap{ c-(RjQ~M5  
N,-C+r5}<4  
void init(int[] data){ &gY578tU  
this.queue=new int[data.length+1]; r=0PW_r:  
for(int i=0;i queue[++size]=data; |ugdl|f  
fixUp(size); 5>.ATfAsV  
} Ie/_gz^  
} gfj_]  
CLzF84@W=  
private int size=0; ) hs&?: )  
\tYImh  
private int[] queue; jq%<Z,rh  
H\oxj,+N  
public int get() { ]jxyaE&%4  
return queue[1]; jH9PD8D\  
} @i!+Z  
<Y7j'n  
public void remove() { /~u^@@.  
SortUtil.swap(queue,1,size--); +bLP+]7oZ  
fixDown(1); =o~+R\1ux+  
} yO7y`;Q(sF  
file://fixdown nt$P A(Y  
private void fixDown(int k) { En9J7es_  
int j; X-(( [A  
while ((j = k << 1) <= size) { 81x/ bx@L%  
if (j < size %26amp;%26amp; queue[j] j++; :XFQ}Cl  
if (queue[k]>queue[j]) file://不用交换 LF!KP  
break; \O"H#gt  
SortUtil.swap(queue,j,k); m`-:j"]b$  
k = j; = K}Pfh  
} PL&> p M  
} pLCj"D).M  
private void fixUp(int k) { gi,7X\`KQ  
while (k > 1) { 8xAIn>,_  
int j = k >> 1; oQ r.cKD ?  
if (queue[j]>queue[k]) STjb2t,a  
break; d.~ns4bt9  
SortUtil.swap(queue,j,k); A?#i{R  
k = j; xjbI1qCfe  
} 9 nc_$H{  
} H"? 5]!p  
#;a+)~3*O  
} hzr, %r  
_]o7iqtv  
} iXo; e  
 VQH48{X  
SortUtil: Xydx87L/-e  
/!5ohQlPJ  
package org.rut.util.algorithm; PWl;pBo  
Lm=EN%*#9  
import org.rut.util.algorithm.support.BubbleSort; ]^>Inh!  
import org.rut.util.algorithm.support.HeapSort; #BP0MY&  
import org.rut.util.algorithm.support.ImprovedMergeSort; "KK}} $>  
import org.rut.util.algorithm.support.ImprovedQuickSort; }C_g;7*  
import org.rut.util.algorithm.support.InsertSort; a%m )8N;C  
import org.rut.util.algorithm.support.MergeSort; 5*Zz_ .  
import org.rut.util.algorithm.support.QuickSort; ^2$b8]q  
import org.rut.util.algorithm.support.SelectionSort; )yb~ kbe  
import org.rut.util.algorithm.support.ShellSort; mvT /sC7I  
~3j +hN8<  
/** oCOv 6(  
* @author treeroot 5 l8F.LtO\  
* @since 2006-2-2 L]z8'n,  
* @version 1.0 YT!iI   
*/ @-S7)h>~  
public class SortUtil { :2c(.-[`  
public final static int INSERT = 1; 6/L[`n"G  
public final static int BUBBLE = 2; _VdJFjY?zc  
public final static int SELECTION = 3; Z72%Bv  
public final static int SHELL = 4; c!6v-2ykv  
public final static int QUICK = 5; ]l fufjj  
public final static int IMPROVED_QUICK = 6; 7=fN vES2  
public final static int MERGE = 7; xI?'Nh  
public final static int IMPROVED_MERGE = 8; 9?ll(5E  
public final static int HEAP = 9; A]0R?N9wb_  
H4 O"^#5  
public static void sort(int[] data) { jbS@6 * _  
sort(data, IMPROVED_QUICK); h/\ Zq  
} q[qX O5  
private static String[] name={ 8BAe6-*S8  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" s-Gd{=%/q  
}; ;q9Y%*  
{= &&J@:  
private static Sort[] impl=new Sort[]{ n Yx[9HN  
new InsertSort(), `Z>=5:+G@2  
new BubbleSort(), F%y#)53g  
new SelectionSort(), :* |WE29U  
new ShellSort(), =3'B$PY  
new QuickSort(), 1N$OXLu  
new ImprovedQuickSort(), { /!ryOA65  
new MergeSort(), igTs[q=Ak  
new ImprovedMergeSort(), ^E \4`  
new HeapSort() a] c03$fK  
}; ,/p+#|>C=  
Ou4hAm91s  
public static String toString(int algorithm){ ,ov$` v  
return name[algorithm-1]; OjffN'a+N  
} -:_3N2U=+  
b)Nd}6}<?  
public static void sort(int[] data, int algorithm) { a U.3  
impl[algorithm-1].sort(data); %u9 Q`  
} Mj>Q V(L8t  
e/ g9r  
public static interface Sort { 6bj77CoB  
public void sort(int[] data); fI;nVRf p  
} 8SroA$^n  
"kcix!}&  
public static void swap(int[] data, int i, int j) { [Y`E"1f2  
int temp = data; lQ^"-zO4  
data = data[j]; *N ~'0"#  
data[j] = temp; ~u0<c:C^  
} /<T{g0s  
} w]xr ~D+  
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