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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。 Fh v)  
插入排序: tP!sOvQ:  
nq/xD;q  
package org.rut.util.algorithm.support; s>~&: GUwR  
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import org.rut.util.algorithm.SortUtil; | nry^zb  
/** EUuMSDp  
* @author treeroot |&n dQ(!l  
* @since 2006-2-2 *B:{g>0  
* @version 1.0 8GlH)J+kq  
*/ 8"8{Nf-"  
public class InsertSort implements SortUtil.Sort{ 5 @[%P=  
Arp4$h  
/* (non-Javadoc) qWE"vI22M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /u:Sn=SPd  
*/ $Uewv +  
public void sort(int[] data) { w4L\@y 3  
int temp; 7KM!\"PM  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 4zf#zJw  
} %< j=&  
} *"zE,Bp"  
} 3J,/bgL5  
ZN4&:9M  
} uDoSe^0  
sL/Lw WH  
冒泡排序: nAts.pVy"  
pu>LC6m3a  
package org.rut.util.algorithm.support; :sA-$*&x  
H`io|~Q  
import org.rut.util.algorithm.SortUtil; MPL2#YU/a  
5~[ Fh2+  
/** 'M'LJ.,"/  
* @author treeroot R>0ta  Q  
* @since 2006-2-2 n--`zx-['  
* @version 1.0 aPb!-o{  
*/ 15s?QSKj  
public class BubbleSort implements SortUtil.Sort{ =G72`]#-  
Tf[ ]vqa`G  
/* (non-Javadoc) G: &Q)_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x)Th2es\  
*/ QB@*/Le   
public void sort(int[] data) { U NAuF8>K  
int temp; ?PQiVL  
for(int i=0;i for(int j=data.length-1;j>i;j--){ {MEU|9@ Y  
if(data[j] SortUtil.swap(data,j,j-1); 9,>M/_8>  
} Wex4>J<`/  
} oz0-'_  
} 6/n;u{|  
} 1%:A9%O)t  
4C[gW  
} [a Z)*L ;  
SwL\=nq+~  
选择排序: vaU7tJ:  
gI%n(eY  
package org.rut.util.algorithm.support; wvYxL c#p0  
i'u;"ot=  
import org.rut.util.algorithm.SortUtil; ?@,:\ ,G  
g bh:Y}_FU  
/** ";xEuX  
* @author treeroot eyG.XAP  
* @since 2006-2-2 g-s@m}[T  
* @version 1.0 7/yd@#$X  
*/ @rF\6I  
public class SelectionSort implements SortUtil.Sort { :({<"H)!'  
 \X`P W  
/* zhe5i;M  
* (non-Javadoc) $5o<Mj  
* e{O5y8,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W7 E-j+2  
*/ GwV FD%  
public void sort(int[] data) { a]k&$  
int temp; M}<=~/k`j  
for (int i = 0; i < data.length; i++) { uj@<_|7  
int lowIndex = i; 5zGj,y>u  
for (int j = data.length - 1; j > i; j--) { _7;^od=C  
if (data[j] < data[lowIndex]) { d7P @_jO6  
lowIndex = j; qw/{o:ce]  
} ?uN(" I  
} {Vm36/a  
SortUtil.swap(data,i,lowIndex); g}-Z]2(c#  
} g2]-Q.  
} 1`t?5|s>  
?X1#b2s  
} m0"\3@kB  
H^g<`XEgw  
Shell排序: $yAfs3/%)s  
d/&|%Z r  
package org.rut.util.algorithm.support; )8SP$  
^4[[+r  
import org.rut.util.algorithm.SortUtil; * 2%e.d3"M  
^IH1@  
/** m =}X$QF`^  
* @author treeroot >B  
* @since 2006-2-2 3Y-v1.^j  
* @version 1.0 }hYE6~pr  
*/ -#6*T,f0P(  
public class ShellSort implements SortUtil.Sort{ HH?*"cKF~  
6hK"k  
/* (non-Javadoc) HqBPY[;s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H\mVK!](D  
*/ ;l()3;  
public void sort(int[] data) { ai4^NJn  
for(int i=data.length/2;i>2;i/=2){ 1,QZnF!.x  
for(int j=0;j insertSort(data,j,i); SZ{cno1`  
} >EtP^Lu~f_  
} ,d>~='  
insertSort(data,0,1); bOMP8{H,  
} (dF;Gcw+  
!d .>r 7w  
/** o$VH,2 QF  
* @param data D~OhwsL4  
* @param j 03WRj+w  
* @param i X.l"f'`l  
*/ B:4qW[U#  
private void insertSort(int[] data, int start, int inc) { ZHlin#"  
int temp; hX%v`8  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 43=-pyp  
} [; ?{BB  
} IQ=|Kj9h  
} h<ctW>6v  
Ko|xEz=  
} 0Y*gJ!a  
KH>sCEt  
快速排序: "Vp: z V<S  
B4 Af  
package org.rut.util.algorithm.support; 6XL9 qb~X  
8sF0]J[g{  
import org.rut.util.algorithm.SortUtil; ku9F N  
s k6|_  
/** Bj($_2M%+  
* @author treeroot W#7-%o T  
* @since 2006-2-2 JvJ!\6Q@  
* @version 1.0 mRnzP[7-\)  
*/ sFM>gG  
public class QuickSort implements SortUtil.Sort{ W<N QU f[=  
:G=1$gb  
/* (non-Javadoc) gc:p@<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $_7d! S"  
*/ VueQP|   
public void sort(int[] data) { 7U )qC}(  
quickSort(data,0,data.length-1); :mV7)oWH  
} ID).*@(I"  
private void quickSort(int[] data,int i,int j){ VmH_0IM^6  
int pivotIndex=(i+j)/2; ^_S-s\DW  
file://swap V?V)&y] 4  
SortUtil.swap(data,pivotIndex,j); 3g#=sd!0O@  
q'AnI$!  
int k=partition(data,i-1,j,data[j]); awSS..g}L  
SortUtil.swap(data,k,j); k#:@fH4{PA  
if((k-i)>1) quickSort(data,i,k-1); ;0Ct\[eh  
if((j-k)>1) quickSort(data,k+1,j); yH"$t/cU"R  
I%Po/+|+  
} # /,2MQ  
/** C|~JPcl  
* @param data GgpQ]rw  
* @param i B/9<b{6  
* @param j cwWSNm|  
* @return V=zM5MH2  
*/ pGbFg&  
private int partition(int[] data, int l, int r,int pivot) { 0O['-x  
do{ X6N]gD  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 7k#${,k  
SortUtil.swap(data,l,r); LY88;*:S  
} lF}$`6  
while(l SortUtil.swap(data,l,r); o!l3.5m2d  
return l; &(uF&-PwO4  
} WP@JrnxO\`  
mp+\!  
} K'{W9~9Lq  
(|a$N.e&K  
改进后的快速排序: ?<yq 2`\4O  
w(e+o.:  
package org.rut.util.algorithm.support; .t^UK#@#4  
w1"gl0ga$  
import org.rut.util.algorithm.SortUtil; ),y!<\oQ  
jY#(A23  
/** |!xfIR>=F  
* @author treeroot X~)V)'R  
* @since 2006-2-2 {7Gx9(  
* @version 1.0 1y)$[e   
*/ ReB(T7Vk=  
public class ImprovedQuickSort implements SortUtil.Sort { sQ>B_Y!  
Z*)y.i`  
private static int MAX_STACK_SIZE=4096; ~g K-5}%!  
private static int THRESHOLD=10; =~W0~lxX  
/* (non-Javadoc) 1W}nYU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &` 00/p  
*/ WK_y1(v>  
public void sort(int[] data) { 9#EHXgz  
int[] stack=new int[MAX_STACK_SIZE]; M]4=(Vv+5  
-e`oW.+  
int top=-1; S`W'G&bCj  
int pivot; ,>QMyI hv  
int pivotIndex,l,r; }o!#_N0T  
>TlW]st  
stack[++top]=0; 22al  
stack[++top]=data.length-1; ,{uW8L  
~_l6dDJ  
while(top>0){ )O2Nlk~l&  
int j=stack[top--]; nI`f_sp  
int i=stack[top--]; Uxk[O  
fd5ZaE#f  
pivotIndex=(i+j)/2; nL":0!DTRD  
pivot=data[pivotIndex]; jsNH`"  
 ^6)GS%R  
SortUtil.swap(data,pivotIndex,j); JGk3 b=K  
(<bm4MPf  
file://partition ( K6~Tj  
l=i-1; u{OS6Ky  
r=j; wQD0 vsD  
do{ L(WL,xnBy  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); S' (cqO}=F  
SortUtil.swap(data,l,r); VxkCK02k  
} `2x H7a-  
while(l SortUtil.swap(data,l,r); yqC Q24  
SortUtil.swap(data,l,j);  k#axt Sc  
V>b2b5QAH,  
if((l-i)>THRESHOLD){ fB f 4]^  
stack[++top]=i; ibd$%;bX3  
stack[++top]=l-1; [%j?.N  
} m,W) N9 M  
if((j-l)>THRESHOLD){ V=j-Um;  
stack[++top]=l+1;  G"o!}  
stack[++top]=j; g$*/ XSr(  
} IVI~1~  
?muDTD%c  
} b]!9eV$  
file://new InsertSort().sort(data); KQG-2oW  
insertSort(data); ,?l~rc  
} ~Cjz29|gp  
/** tigT@!`$Y  
* @param data s kN9O"^A  
*/ 0 HGlf  
private void insertSort(int[] data) { wP[xmO-%  
int temp; a}:A,t<6  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); @ Ii-NmOr  
} e^j<jV`1  
} , N53Iic  
} ]dvPx^`d{  
nz4<pvC,*  
} !Y ( apVQ  
PJzc=XPU  
归并排序: ;Vg^!]LL#  
 n;wwMMBM  
package org.rut.util.algorithm.support; # ;K,,ku x  
4-mVB wq  
import org.rut.util.algorithm.SortUtil; \ht ?G n  
t/}L36@+  
/** m#tpbFAsc  
* @author treeroot pmD4j8F_  
* @since 2006-2-2 n-DaX kK  
* @version 1.0 B$rTwR"(-  
*/ }g~g50ci  
public class MergeSort implements SortUtil.Sort{ |6aJwe+*  
|^R*4;Phe  
/* (non-Javadoc) Y9F)`1 7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  EIr@g  
*/ NUCiY\td  
public void sort(int[] data) { tJNIr5o  
int[] temp=new int[data.length]; h4_ b!E@  
mergeSort(data,temp,0,data.length-1); YTK^ijmU6x  
} yGxv?%%2  
+Mk#9 r  
private void mergeSort(int[] data,int[] temp,int l,int r){ &iNwvA%9D  
int mid=(l+r)/2; )0^ >#k  
if(l==r) return ; #02Kdo&Vy  
mergeSort(data,temp,l,mid); `\bT'~P  
mergeSort(data,temp,mid+1,r); [#Y' dFQ  
for(int i=l;i<=r;i++){ 9Hd;35 3Q  
temp=data; re^Hc(8M  
} qz!Ph5 (  
int i1=l; t V03+&jF  
int i2=mid+1; Mo D?2J  
for(int cur=l;cur<=r;cur++){ pj0fM{E  
if(i1==mid+1) b7HffO O  
data[cur]=temp[i2++]; 8Hi!kc;f6>  
else if(i2>r) 5{K}?*3hJ  
data[cur]=temp[i1++]; 1svi8wh  
else if(temp[i1] data[cur]=temp[i1++]; Pao%pA.<  
else $d/&k`  
data[cur]=temp[i2++]; WkP +r9rT  
} .$&Q[r3Lu  
} TJ(K3/)Z  
~=En +J}*  
} : =Kx/E:1  
=Q<L eh=G  
改进后的归并排序: S{#cD1>.  
e)H!uR  
package org.rut.util.algorithm.support; u,1}h L  
,qQG;w,m  
import org.rut.util.algorithm.SortUtil; ,+`HQdq  
2&Jd f  
/** UG;Y^?Ppe5  
* @author treeroot CSTI?A"P  
* @since 2006-2-2 6G AaV[])'  
* @version 1.0 :7g=b%;  
*/ P[ r];e  
public class ImprovedMergeSort implements SortUtil.Sort { F'JY?  
nV*y`.+  
private static final int THRESHOLD = 10; V Z y4_v=  
W_`A"WdT.  
/* (:pq77  
* (non-Javadoc) dRi5hC$  
* IA&L]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `J0i.0p  
*/ Y&HK1>M_  
public void sort(int[] data) { j;1-p>z  
int[] temp=new int[data.length]; Iu@y(wyg  
mergeSort(data,temp,0,data.length-1); R\|lt)h  
} N|g;W  
kq=V4-a[  
private void mergeSort(int[] data, int[] temp, int l, int r) { 20RXK1So  
int i, j, k; :}:3i9e*2  
int mid = (l + r) / 2; cO2& VC  
if (l == r) >EsziRm  
return; Yc r3HLJy  
if ((mid - l) >= THRESHOLD) I<td1Y1q  
mergeSort(data, temp, l, mid); wXMDh$  
else }@1q@xU  
insertSort(data, l, mid - l + 1); B+d<F[ |  
if ((r - mid) > THRESHOLD) xo}b= v  
mergeSort(data, temp, mid + 1, r); H5CR'Rp  
else GNf482  
insertSort(data, mid + 1, r - mid); YTQt3=1ii  
=J-5.0Q\_\  
for (i = l; i <= mid; i++) { 7uorQfR?  
temp = data; ._w8J"E5  
} K;hh&sTB  
for (j = 1; j <= r - mid; j++) { "xmP6=1  
temp[r - j + 1] = data[j + mid]; .d;Iht,[  
} =<r8fXWZ  
int a = temp[l]; im} ?rY  
int b = temp[r]; U[L9*=P;  
for (i = l, j = r, k = l; k <= r; k++) { %J:SO_6  
if (a < b) { Zv11uH-C  
data[k] = temp[i++]; 3f " %G\  
a = temp; j"^ +oxH  
} else { @vL20O.  
data[k] = temp[j--]; -9 !.m  
b = temp[j]; EN{]Qb06A  
} l0&EZN0V2  
} ?Xdak|?i  
} bNFLO Q  
JO=[YoTr  
/** fO'Wj`&a  
* @param data 2%*MW"Q  
* @param l }i {sg#  
* @param i nJ4@I7Sk;  
*/ t }IkK=f  
private void insertSort(int[] data, int start, int len) { 8}H1_y-g[  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); l`kWz5[~  
} vZ/6\Cz  
} r`)L ~/  
} ReiB $y6  
} |KB0P@=a  
xq6cKtSv  
堆排序: &g2 Eptx#  
DD" $1o"  
package org.rut.util.algorithm.support; Y(cN}44  
KH\b_>wU2  
import org.rut.util.algorithm.SortUtil; %WqNiF0-  
iAT)VQ&  
/** #r PP*  
* @author treeroot ZmOfEg|h\  
* @since 2006-2-2  h:lt<y  
* @version 1.0 tXJU vish  
*/ eh,~^x5  
public class HeapSort implements SortUtil.Sort{ VG/3xR&y  
+T9:Udi  
/* (non-Javadoc) v]__%_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q+B&orp  
*/ ,=?{("+  
public void sort(int[] data) { cA6lge<{~  
MaxHeap h=new MaxHeap(); %OgS^_tu  
h.init(data); ng:Q1Q9N  
for(int i=0;i h.remove(); Y>jiXl?&  
System.arraycopy(h.queue,1,data,0,data.length); 5*[2yKsTi  
} iH^z:%dP  
> iE!m  
private static class MaxHeap{ R |KD&!~Z  
2lL,zFAq  
void init(int[] data){ oD}uOC}FS{  
this.queue=new int[data.length+1]; 'zh7_%  
for(int i=0;i queue[++size]=data; fDx9iHGv  
fixUp(size); Be+0NXLVy  
} @ P|LLG'  
} S*AERm   
eAPXWWAZJ1  
private int size=0; 64:fs?H  
?f/n0U4w  
private int[] queue; 9n}p;3{f  
+2 Af&~T  
public int get() { !x'/9^i~v  
return queue[1]; YJ(*wByM  
} xC C:BO`pw  
Vb BPB5 $q  
public void remove() { %'0T Xr$  
SortUtil.swap(queue,1,size--); mDZ*E!B  
fixDown(1); .$@R{>%U  
} klUQkz |<a  
file://fixdown OzC\9YeA  
private void fixDown(int k) { cyJG8f  
int j; %,ngRYxT#  
while ((j = k << 1) <= size) { | >z3E z  
if (j < size %26amp;%26amp; queue[j] j++; -.{g}R%  
if (queue[k]>queue[j]) file://不用交换 h;3cd0  
break; #pcP!  
SortUtil.swap(queue,j,k); ;NlWb =  
k = j; ``E/m<r:$  
} <id}<H  
} " LJq%E  
private void fixUp(int k) { }%D^8>S  
while (k > 1) { |^@dFOz  
int j = k >> 1; d|4}obCt  
if (queue[j]>queue[k]) sN5B7)Vc  
break; Qyy.IPTP  
SortUtil.swap(queue,j,k); T9s2bC.z55  
k = j; UT="2*3gz  
}  rb{P :MX  
} #h/Mbj~S  
0>zbCubPH  
} "le>_Ze_>|  
^i:B+ rl  
} 0 Us5  
MMj9{ou  
SortUtil: tr7<]Hm:  
vv=VRhwF  
package org.rut.util.algorithm; gJM`[x`T  
@'GGm#<   
import org.rut.util.algorithm.support.BubbleSort; \m1~jMz*>k  
import org.rut.util.algorithm.support.HeapSort; T*KMksjxm`  
import org.rut.util.algorithm.support.ImprovedMergeSort; M}!2H*  
import org.rut.util.algorithm.support.ImprovedQuickSort; Qca&E`~Q  
import org.rut.util.algorithm.support.InsertSort; 9*a=iL*Nw  
import org.rut.util.algorithm.support.MergeSort; :^(>YAyHj^  
import org.rut.util.algorithm.support.QuickSort; /d%=E  
import org.rut.util.algorithm.support.SelectionSort; 4^URX >nx8  
import org.rut.util.algorithm.support.ShellSort; +!|9hF'  
F+u|HiYG  
/** 0'IBN}  
* @author treeroot tToTxf~  
* @since 2006-2-2 ,N0#!<}4  
* @version 1.0 L`24 ?Y{  
*/ y99mC$"Ee`  
public class SortUtil { Jkek-m  
public final static int INSERT = 1; 4]E3c AJ  
public final static int BUBBLE = 2; e2A-;4?_  
public final static int SELECTION = 3; bcYF\@};  
public final static int SHELL = 4; Gh}*q|Lz  
public final static int QUICK = 5; Gy(=706  
public final static int IMPROVED_QUICK = 6; O6OP =K!t:  
public final static int MERGE = 7; y`=]T>X&x  
public final static int IMPROVED_MERGE = 8; [W7CXZDd  
public final static int HEAP = 9; j*vYBGD  
sQ\8>[]   
public static void sort(int[] data) { 5^x1cUB]  
sort(data, IMPROVED_QUICK); 5@BBo eG  
}  \*<d{gZ~  
private static String[] name={ n<u $=H  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" =z /dcC$r  
}; {Ja!~N;3  
?pd8w#O  
private static Sort[] impl=new Sort[]{ a5 TioQ  
new InsertSort(), mV pMh#zw  
new BubbleSort(), Sb82}$sO  
new SelectionSort(), (P:<t6;+  
new ShellSort(), p|p l  
new QuickSort(), #%h-[/  
new ImprovedQuickSort(), V]db'qB\  
new MergeSort(), |mw.qI|  
new ImprovedMergeSort(), Zo~  
new HeapSort() Iepsz  
}; lp^<3o*1  
OL^l 3F  
public static String toString(int algorithm){ c$yk s  
return name[algorithm-1]; ybKWOp:O  
} #$8% w  
}*S `qW;B  
public static void sort(int[] data, int algorithm) { 5l UF7:A>#  
impl[algorithm-1].sort(data); )O@]uY  
} b?lD(fa&  
.E8_Oz  
public static interface Sort { 4?q <e*W  
public void sort(int[] data); [rV>57`YD  
} 7E79-r&n  
Eu@huN*/  
public static void swap(int[] data, int i, int j) { hFy;ffs.  
int temp = data; TI,&!E?;  
data = data[j]; [R^i F  
data[j] = temp; WGZ9B^A  
} UKT%13CO4U  
} 9\BT0kx  
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