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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。 %Nwap~=H;  
插入排序: T6=c9f?7  
RI!!?hYm  
package org.rut.util.algorithm.support; g;i>nzf  
B# |w}hj  
import org.rut.util.algorithm.SortUtil; $ii/Q:w T"  
/** Om0Z\GP=  
* @author treeroot @.yp IE\  
* @since 2006-2-2 'v GrbmK  
* @version 1.0 !>TVDN>  
*/ 4`o_r%   
public class InsertSort implements SortUtil.Sort{ "o*(i7T=n  
*NS:X7p!V  
/* (non-Javadoc) q{ItTvL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S;kI\;  
*/ O]DZb+O"  
public void sort(int[] data) { Zgkk%3'^'  
int temp; "EQ`Q=8  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); cgNK67"(  
} v(W$\XH  
} s]#D;i8  
} hk3}}jc  
iBVV5 f  
} T6=,A }t-  
z2vrV?:  
冒泡排序: OIGu`%~js  
8L`J](y  
package org.rut.util.algorithm.support; ts`c_hH,1'  
8~YhT]R=  
import org.rut.util.algorithm.SortUtil; ^q-]."W]t~  
vR.=o*!%  
/** fW~r%u .y  
* @author treeroot =Bcwd7+  
* @since 2006-2-2 {u{n b3/jl  
* @version 1.0 Y #E/"x%+  
*/ 5%,J@&5G s  
public class BubbleSort implements SortUtil.Sort{ 5 < wIJ5t  
1//d68*"  
/* (non-Javadoc) F.i*'x0u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i+( k  
*/ LX[<Wh_X(  
public void sort(int[] data) { @;_xFL;{g  
int temp; K'kWL[Ut!  
for(int i=0;i for(int j=data.length-1;j>i;j--){ "_WOt Jr  
if(data[j] SortUtil.swap(data,j,j-1); =+% QfuK  
} 9_)*b  
} ~~!iDF\  
} lQj3# !1}  
} R*VRxQ,h6+  
87l(a,#J  
} 62TWqQ!9d  
[v ( \y  
选择排序: Q'/v-bd?o  
ZX[ @P?A+-  
package org.rut.util.algorithm.support; /Fy2ZYs,`8  
b-ZC~#?|b  
import org.rut.util.algorithm.SortUtil; R".~{6  
Yj)H!Cp.xD  
/** \=Rw/[lR  
* @author treeroot mlW0ptp  
* @since 2006-2-2 7TD%vhbiwi  
* @version 1.0 z2*>5 c%  
*/ :l ~Wt7R  
public class SelectionSort implements SortUtil.Sort { 1O3"W;SR<:  
_; /onM   
/* LI1OocY.]  
* (non-Javadoc) }c|)i,bL  
* 2XI%z4\)!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C +S  
*/ FC[8kq>Hk  
public void sort(int[] data) { `1k0wT(  
int temp; , 7-@eZ  
for (int i = 0; i < data.length; i++) { MWTzJGRT  
int lowIndex = i; = i9|lU"Va  
for (int j = data.length - 1; j > i; j--) { (Qq;ySZ#  
if (data[j] < data[lowIndex]) { xo3bY6<n  
lowIndex = j; V_+XZ+7Lx}  
} 3pg_`  
} Hj\>&vMf  
SortUtil.swap(data,i,lowIndex); t M?3oO  
} <*k]Aa3y  
} uU_lC5A|  
UP]X,H~stU  
} *%'nlAX6%  
3"afrA  
Shell排序: d h5%  
/`$9H|  
package org.rut.util.algorithm.support; sg0HYb%_E  
1@" L  
import org.rut.util.algorithm.SortUtil; BN\Y N  
L *",4!  
/** bit@Kv1<C  
* @author treeroot Tk1U  
* @since 2006-2-2 s.ywp{EF  
* @version 1.0 [HO=ii]Wb  
*/ .YOC|\  
public class ShellSort implements SortUtil.Sort{ f4{O~?=  
<E/"v  
/* (non-Javadoc) /A$mP)}tz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yvN;|R  
*/ gLp7<gx6  
public void sort(int[] data) { vu7F>{D  
for(int i=data.length/2;i>2;i/=2){ <;)qyP  
for(int j=0;j insertSort(data,j,i); Rf*cW&}%  
} o}QtKf)W  
} @px 4[  
insertSort(data,0,1); wX?< o  
} =VXxQ\{  
QxUsdF?p  
/** HYqDaRn  
* @param data lO)-QE+  
* @param j [@K#BFA  
* @param i ]H[%PQ r`Z  
*/ :x*#RnRr.  
private void insertSort(int[] data, int start, int inc) { U42B( ow  
int temp; eD<Kk 4){  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); -bJC+Yn  
} ]&;M 78^6  
} \M(#FS  
} M$L ; -T  
F,F1Axf  
} )GgO=J:o  
.MUoNk!  
快速排序: ..u2IdEu  
PO1|l-v<Yq  
package org.rut.util.algorithm.support; )o51QgPy  
#21t8  
import org.rut.util.algorithm.SortUtil; Dx:2/"v  
N5]}m:"pk  
/** CEOD$nYc  
* @author treeroot JY6&CL`C  
* @since 2006-2-2 `)Z+]5:  
* @version 1.0 DMeP9D  
*/ ^j-w^)@T  
public class QuickSort implements SortUtil.Sort{ ?|}%A9   
ik:fq&=  
/* (non-Javadoc) Fqr}zR)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  v7Q=  
*/ T1Gy_ G/  
public void sort(int[] data) { ;Nfd  
quickSort(data,0,data.length-1); fG{ 9doUD  
} d]bM,`K* 6  
private void quickSort(int[] data,int i,int j){ +#$(>6Zu"{  
int pivotIndex=(i+j)/2; !/]vt?v#^  
file://swap (j*1sk  
SortUtil.swap(data,pivotIndex,j); . PAR  
J|Af`HJ  
int k=partition(data,i-1,j,data[j]); =A yDVWpE  
SortUtil.swap(data,k,j); 335\0~;3  
if((k-i)>1) quickSort(data,i,k-1); ]Sl]G6#Iwv  
if((j-k)>1) quickSort(data,k+1,j); IJnh@?BC  
+xGz~~iNh  
} }iu(-{Z  
/** 97XGJ1HI  
* @param data Td|x~mZv:  
* @param i P. V #  
* @param j qjc8$#zXS  
* @return qYi<GI*|@  
*/ #" 3az8u  
private int partition(int[] data, int l, int r,int pivot) { ,?zIt6Z  
do{ -( d,AX  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); M?yWFqFt9m  
SortUtil.swap(data,l,r); ? FlV<nE"J  
} h_w_OCC&2  
while(l SortUtil.swap(data,l,r); aucQZD-_"  
return l; v<2B^(i}VB  
} "?[7oI}c&  
$hCPmiI  
} ?n]e5R(cj  
,pc\ )HR  
改进后的快速排序: BUp,bJpO  
ku`bwS  
package org.rut.util.algorithm.support; J&<uP)<  
 4hzS  
import org.rut.util.algorithm.SortUtil; o{QU?H5h  
GiF})e}  
/** 02_37!\  
* @author treeroot vU|.Gw  
* @since 2006-2-2 %uVbI'n)  
* @version 1.0 6Eu&%`  
*/ @Z50S 8  
public class ImprovedQuickSort implements SortUtil.Sort { s</llJ$  
-_>g=a@&  
private static int MAX_STACK_SIZE=4096; Qey6E9eCA  
private static int THRESHOLD=10; DJm/:td  
/* (non-Javadoc) t G{?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Aj22t   
*/ WecJ^{g>r{  
public void sort(int[] data) { UdSu:V|  
int[] stack=new int[MAX_STACK_SIZE]; C}~/(;1V=  
|B0.*te6  
int top=-1; e>oE{_e  
int pivot;  fK$N|r  
int pivotIndex,l,r; &dC #nw  
@3 UVl^T  
stack[++top]=0; Q I.*6-(  
stack[++top]=data.length-1; _z3Hl?qk=  
I8 <s4q  
while(top>0){ ElEa*70~g  
int j=stack[top--]; <_|H]^o  
int i=stack[top--]; bnWKfz5  
`Al[gG?/!  
pivotIndex=(i+j)/2; .)wj{(>TJ  
pivot=data[pivotIndex]; /)ubyl]^p  
$B iG7,[#  
SortUtil.swap(data,pivotIndex,j); jgr2qSU C  
>QusXD"L>  
file://partition x_&m$Fh  
l=i-1; -}ebn*7i\  
r=j; I)-u)P?2x  
do{ LqHeLN  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); c0H8FF3  
SortUtil.swap(data,l,r); ~'4:{xH  
} >:ZlYZ6sI  
while(l SortUtil.swap(data,l,r); GC3:ZpV`  
SortUtil.swap(data,l,j); kt";Jx  
10/N-=NG18  
if((l-i)>THRESHOLD){ ;5*)kX  
stack[++top]=i; !6wbg  
stack[++top]=l-1; G0^O7w^5  
}  MRB>(}  
if((j-l)>THRESHOLD){ 3xW;qNj:!l  
stack[++top]=l+1; ,H3C\.%w\  
stack[++top]=j; .2xp.i{  
} SZ9xj^"g  
=f)S=0UF  
} @UO=)PxN3  
file://new InsertSort().sort(data); Z {ntF  
insertSort(data); Cf_Ik  
} aBM'ROQ  
/** #"M 'Cs  
* @param data ax0:v!,e  
*/ |U_48  
private void insertSort(int[] data) { y\ nR0m  
int temp; C { }s  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 4*UoTE-g$  
} ifu "e_^  
} l|-TGjsX  
} "9[K  
>4d2IO1\  
} MwxfTH"wi  
Q<L.!%vu}  
归并排序: ,EgIH%* g  
{-rK:*yP'u  
package org.rut.util.algorithm.support; ];P^q`n=.  
Ih}I`wY-  
import org.rut.util.algorithm.SortUtil; JH~ve  
HrA6wn\O  
/** hfY Ieb#91  
* @author treeroot ? OBe!NDf  
* @since 2006-2-2 ^i{B8]2,  
* @version 1.0 s0Ii;7fA{  
*/ @j$tpz  
public class MergeSort implements SortUtil.Sort{ ~'WvIA (  
iSxxy1R  
/* (non-Javadoc) 'JEZ;9}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4\q7.X+^  
*/ AW LKve_  
public void sort(int[] data) { B{ NKDkDH  
int[] temp=new int[data.length]; FhB^E$r%  
mergeSort(data,temp,0,data.length-1); Vgs( feGs  
} JF*JF Ob  
F9e$2J)C  
private void mergeSort(int[] data,int[] temp,int l,int r){ W%09.bF  
int mid=(l+r)/2; ]lF'o&v]  
if(l==r) return ; jlER_I]  
mergeSort(data,temp,l,mid); :^SpKe(7  
mergeSort(data,temp,mid+1,r); H ^Xw<Z=  
for(int i=l;i<=r;i++){ DYH-5yX7  
temp=data; Z*kGWL  
} i:WHql"Kw_  
int i1=l; V/+r"le  
int i2=mid+1; a4,bP*H  
for(int cur=l;cur<=r;cur++){ Do(7LidC5  
if(i1==mid+1) { e2 (  
data[cur]=temp[i2++]; uNnwz%w  
else if(i2>r) ,ewg3mYHC&  
data[cur]=temp[i1++]; +D4Nu+~BSN  
else if(temp[i1] data[cur]=temp[i1++]; w\_NrsO!x  
else AEi@t0By  
data[cur]=temp[i2++]; m7kDxs(KO  
} Qd!;CoOmZs  
} 44?5]C7  
6!bA~"N  
} 5 d(A(  
"h7-nwm  
改进后的归并排序: a-Cp"pKlVY  
fB"3R-H?O  
package org.rut.util.algorithm.support; S#+G?I3w  
K4n1#]8i  
import org.rut.util.algorithm.SortUtil; * @G4i  
/Fh"Gl^  
/** [ZURs3q  
* @author treeroot Q|gun}  
* @since 2006-2-2 2O9dU 5b  
* @version 1.0 R^](X*  
*/ )gR14a  
public class ImprovedMergeSort implements SortUtil.Sort { Lj(hk @  
[p!C+ |rro  
private static final int THRESHOLD = 10; ]02 l!"  
1y0.tdI(  
/* 2I?HBz1v  
* (non-Javadoc) j#&sZ$HQ4  
* Jkm\{;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M=o,Sav5*  
*/ 1a4QWGpq  
public void sort(int[] data) { +@%9pbM"z  
int[] temp=new int[data.length]; V.Xz n  
mergeSort(data,temp,0,data.length-1); ~JLqx/[|s  
} cw"x0 RS  
2y_rsu\  
private void mergeSort(int[] data, int[] temp, int l, int r) { J~gfMp.  
int i, j, k; f`A  
int mid = (l + r) / 2; r-N2*uYtu  
if (l == r) f,M$>!$V  
return; AV d  
if ((mid - l) >= THRESHOLD) @dCu]0oNI  
mergeSort(data, temp, l, mid); ^#3$C?d  
else gyCb\y+\a  
insertSort(data, l, mid - l + 1); $o]zNW;X  
if ((r - mid) > THRESHOLD) ;S`Nq%,  
mergeSort(data, temp, mid + 1, r); CM5A-R90  
else 2z0HB+Y}x  
insertSort(data, mid + 1, r - mid); U%k e 5uwP  
`Q(ac| 0  
for (i = l; i <= mid; i++) { Q^MB%L;D  
temp = data; yH#;k:O=  
} [po+a@ %  
for (j = 1; j <= r - mid; j++) { Fa+PN9M`?.  
temp[r - j + 1] = data[j + mid]; a _  
} qZ\zsOnp  
int a = temp[l]; ~d5"<`<^o  
int b = temp[r]; _\]D<\St  
for (i = l, j = r, k = l; k <= r; k++) { z(\H.P#  
if (a < b) { oSa FmP  
data[k] = temp[i++]; 34;c00  
a = temp; CdaB.xk  
} else { >D:S)"  
data[k] = temp[j--]; 6{7O  
b = temp[j]; XIjSwR kYJ  
} GE5@XT  
} 4`8.\  
} C4 Wdt  
3Vw%[+lY9  
/** J1R%w{  
* @param data &-b=gnT   
* @param l -|)[s[T~m  
* @param i uqQMS&;+,|  
*/ JyB>,t)  
private void insertSort(int[] data, int start, int len) { bLV@Ts  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 4uftx1o   
} t&P5Zw*B  
} _)_XO92~  
} l?FNYvL  
} oC7#6W:@w  
_ZS<zQ'  
堆排序: t9`NCng 5  
dhVwS$O )  
package org.rut.util.algorithm.support; <}mT[;:"  
@tj0Ir v  
import org.rut.util.algorithm.SortUtil; 8OFrW.>[  
ZcWl{e4  
/** Y}?@Pm drz  
* @author treeroot E,6E-9  
* @since 2006-2-2 epG;=\f}m`  
* @version 1.0 R3@iN &  
*/ = oh6;Ojt  
public class HeapSort implements SortUtil.Sort{ XdS<51 C  
$1dI  
/* (non-Javadoc) njq-iU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X4k/7EA  
*/ F_r eBPx  
public void sort(int[] data) { /uyQ>Y*-\Y  
MaxHeap h=new MaxHeap(); 4Dd9cG,lN  
h.init(data); D$mrnm4d  
for(int i=0;i h.remove(); l:|Fs=\  
System.arraycopy(h.queue,1,data,0,data.length); H~~(v52wD  
} yv:NH|,/y  
>u/yp[Ky  
private static class MaxHeap{ (w^&NU'e  
` q@~78`  
void init(int[] data){ EV(/@kN2  
this.queue=new int[data.length+1]; hqds T  
for(int i=0;i queue[++size]=data; <Q kfvK]Q  
fixUp(size); |n|2)hC  
} 5-3gsy/Mo  
} A"k,T7B  
j?mJ1J5  
private int size=0; W ,U'hk%  
NkJ^ecn%)  
private int[] queue; y(S0 2v>l  
"Jwz.,Y\  
public int get() { 2kgm)-z  
return queue[1]; 0jzA\$oD  
} LPNv4lT[u  
|kd^]! _  
public void remove() { <qy+@t  
SortUtil.swap(queue,1,size--); .iS]aJJ  
fixDown(1); xD#/@E1'Y  
} .iYgRW=T  
file://fixdown @t^ 2/H ?O  
private void fixDown(int k) { $-0u`=!  
int j; %51pfuL  
while ((j = k << 1) <= size) { >I!(CM":s$  
if (j < size %26amp;%26amp; queue[j] j++; Uy_= #&jg  
if (queue[k]>queue[j]) file://不用交换 2~4C5@SxL  
break; P>kx{^  
SortUtil.swap(queue,j,k); 4HHf3j!5  
k = j; ;'Q{ ywr  
} (j /O=$mJ  
} z[rB/ |2  
private void fixUp(int k) { a&[nVu+  
while (k > 1) { \wCL)t.cX  
int j = k >> 1; \*N1i`99  
if (queue[j]>queue[k]) =e+go ]87x  
break; B dKwWgi+a  
SortUtil.swap(queue,j,k); `Qhh{  
k = j; k$2Y)  
} 6GN'rVr!Z  
} ;uDFd04w [  
] QEw\4M?=  
} c9[5)  
o EN_,cUp  
} ~;W%s  
W{h7+X]Y  
SortUtil: RW)C<g  
L;  ~=(  
package org.rut.util.algorithm; pi{ahuI#_o  
*Tlv'E.M  
import org.rut.util.algorithm.support.BubbleSort; 72 6y/o  
import org.rut.util.algorithm.support.HeapSort; 8xX{y#  
import org.rut.util.algorithm.support.ImprovedMergeSort; 2P=;r:cx  
import org.rut.util.algorithm.support.ImprovedQuickSort; HHYcFoJwYN  
import org.rut.util.algorithm.support.InsertSort; <*+ MBF  
import org.rut.util.algorithm.support.MergeSort; ivq4/Y] -X  
import org.rut.util.algorithm.support.QuickSort; pDLo`F}A  
import org.rut.util.algorithm.support.SelectionSort; @RP|?Xc{?  
import org.rut.util.algorithm.support.ShellSort; J\*d4I<(Rt  
z)B=<4r  
/** >gE_?%a[  
* @author treeroot R[c_L=  
* @since 2006-2-2 x,%&[ 6(  
* @version 1.0 S@#L!sT`u  
*/ -*A'6%`  
public class SortUtil { |3L MVN  
public final static int INSERT = 1; Q'VS]n  
public final static int BUBBLE = 2; Xy{+=UY  
public final static int SELECTION = 3; uE$o4X  
public final static int SHELL = 4; 4Rn i7qH  
public final static int QUICK = 5; }NXESZYoi  
public final static int IMPROVED_QUICK = 6; vn<S"  
public final static int MERGE = 7; cjXwOk1:s  
public final static int IMPROVED_MERGE = 8; y ^\8x^Eg  
public final static int HEAP = 9; UQ)}i7v  
hA8 zXk/'8  
public static void sort(int[] data) { SD&[K 8-i2  
sort(data, IMPROVED_QUICK); f- <6T  
} 2YyZiOMSc  
private static String[] name={ d#\n)eGr  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" dq(x@&J  
}; >g&`g}xZQ  
+*V; f,  
private static Sort[] impl=new Sort[]{ 7yp*I[1Qf>  
new InsertSort(), $#r(1 Ev  
new BubbleSort(), 1N+#(<x@,  
new SelectionSort(), ^n/uY94E)p  
new ShellSort(), IoA;q)  
new QuickSort(), BR2y1Hfi  
new ImprovedQuickSort(), .IXwa,  
new MergeSort(), Q\76jD`m\  
new ImprovedMergeSort(), iIFQRnpu;3  
new HeapSort() <B`V  
}; 4lA+V,#  
K^H t$04  
public static String toString(int algorithm){ z"3c+?2  
return name[algorithm-1]; (zBQ^97]  
} ZAZCvN@5  
+$t%L  
public static void sort(int[] data, int algorithm) { eXK`%'  
impl[algorithm-1].sort(data); 9K|lU:,  
} }U9jsm  
N6;Z\\&0^q  
public static interface Sort { j,XKu5w)Oi  
public void sort(int[] data); {rZ"cUm  
} WIm7p1U#V  
PS6`o  
public static void swap(int[] data, int i, int j) { cy4'q ?r  
int temp = data; Pc'?p  
data = data[j]; N+5 ^h(~  
data[j] = temp; gEP E9ew  
} %S.U`(.  
} vXbT E$  
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3+5=?,请输入中文答案:八 正确答案:八