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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。 ({mlA`d]  
插入排序: 3il/{bgM  
xiO10:L4  
package org.rut.util.algorithm.support; /0r6/ _5-.  
+8.1cDEH\  
import org.rut.util.algorithm.SortUtil; ~iJ@x;`  
/** #:=*n(GT  
* @author treeroot VgO.in^q  
* @since 2006-2-2  #]J"j]L  
* @version 1.0 s1J( -O  
*/ I^m9(L4%  
public class InsertSort implements SortUtil.Sort{ I\f\k>;  
y'_2|5!Qs  
/* (non-Javadoc) {2LG$x-N%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [bjP-pX  
*/ r85j /YK  
public void sort(int[] data) { MPMAFs  
int temp; %:8XZf  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 3K%_wCZ  
} V U~r~  
} COcS w  
} mW1T4rR'  
g2 tM!IRQ  
} ;FnS=Z  
WfYC`e7q  
冒泡排序: )D" 2Q:  
v[~Q   
package org.rut.util.algorithm.support; _.xicov  
,f$ftn\~j/  
import org.rut.util.algorithm.SortUtil; r[P+F  
XhmUtbs  
/** vP^V3  
* @author treeroot 6*s:I&  
* @since 2006-2-2 CK8!7=>}^  
* @version 1.0 @O8X )  
*/ V eLGxc  
public class BubbleSort implements SortUtil.Sort{ tJpK/"R'  
0W,.1J2*  
/* (non-Javadoc) d_ji ..T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oG=4&SQ  
*/ T&->xe f=  
public void sort(int[] data) { yK0iW  
int temp; Dyh|F\T  
for(int i=0;i for(int j=data.length-1;j>i;j--){ cG5u$B  
if(data[j] SortUtil.swap(data,j,j-1); Hu"TEhW(2  
} w\ddC DZ  
} R/kF,}^F  
} *mkL>v &  
} ddw^oU  
k; ned  
} sfs2kiH  
;ibOd~  
选择排序: Zn6u6<O=  
'6GW.;  
package org.rut.util.algorithm.support; c:2LG_mQ  
;+rcT;_^/  
import org.rut.util.algorithm.SortUtil; |D1TSv}rZD  
la>H&  
/** 9 OZXs2~x  
* @author treeroot 7Jn%c<s  
* @since 2006-2-2 #pk  
* @version 1.0 5RR4jX]  
*/ ageTv/  
public class SelectionSort implements SortUtil.Sort { r tH #j  
^AC2  zC  
/* ,OBJ>_5  
* (non-Javadoc) .DHQJ|J-1  
* cg^=F_h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B:(a?X-7  
*/ z,(.` %h  
public void sort(int[] data) { n"f: 6|<  
int temp; j>#ywh*A  
for (int i = 0; i < data.length; i++) { 6!v$"u|[!'  
int lowIndex = i; vAfYONU  
for (int j = data.length - 1; j > i; j--) { nTr{ D&JS  
if (data[j] < data[lowIndex]) { 0+Q; a  
lowIndex = j; URj2 evYW  
} abg` : E  
} *@g>~q{`  
SortUtil.swap(data,i,lowIndex); Vj6 w7hz  
} l]S%k&  
} ?fQ8Ff  
Uac.8wQh  
} 9)D9'/{L#  
tfVlIY<  
Shell排序: UP*5M  
?P(U/DS8  
package org.rut.util.algorithm.support; O8/r-?4.  
8Od7e`  
import org.rut.util.algorithm.SortUtil; ;jFUtG  
:\~YbA  
/** !nTI(--  
* @author treeroot vo^2k13  
* @since 2006-2-2 K?*p|&Fi?8  
* @version 1.0 <STE~ZmO  
*/ %Q zk aXJ  
public class ShellSort implements SortUtil.Sort{ ,Gy2$mglB  
OXF/4Oe  
/* (non-Javadoc) =J'&.@Dwz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Pp`[E/ qj4  
*/ xPzBbe  
public void sort(int[] data) {   9EWw  
for(int i=data.length/2;i>2;i/=2){ @P<aTRy,f  
for(int j=0;j insertSort(data,j,i); dlBr2 9  
} K k|mV&3J  
} A5RM&y  
insertSort(data,0,1); o>A']+`E u  
} t4+bRmS`_  
nf,Ez  
/** Wcki=ac\v!  
* @param data x| r#  
* @param j ;:'ABfs  
* @param i j9&x# U  
*/ @s|yH"  
private void insertSort(int[] data, int start, int inc) { AU<A\  
int temp; 3z -="_p  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Xr{ r&Rl  
} Yduj3Ht:w  
} 9 !V,++j  
} 9(hI%idq  
>Zh^,T={G  
} i&0Zli  
O&r9+r1`  
快速排序: ,D\}DJ`)C  
9b)'vr*Hy7  
package org.rut.util.algorithm.support; N'YQ6U  
ESnir6HoU  
import org.rut.util.algorithm.SortUtil; >w#&fd  
%FLe@.Ep{D  
/** ()zn8_z  
* @author treeroot duoM >B>8]  
* @since 2006-2-2 !r4B1fX  
* @version 1.0 =4K:l}}  
*/ kg^5D3!2{Q  
public class QuickSort implements SortUtil.Sort{ ]P)2Q!X  
QG5)mIJ  
/* (non-Javadoc) JY$+<`XM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vs(D(d,  
*/ lVgin54Q  
public void sort(int[] data) { UH#S |o4  
quickSort(data,0,data.length-1); n_4BNOZ~  
} F **/T  
private void quickSort(int[] data,int i,int j){ P7*?E*   
int pivotIndex=(i+j)/2; c!]yT0v&s  
file://swap 6k;>:[p  
SortUtil.swap(data,pivotIndex,j); '%*/iH6<U{  
}U qL2KXi4  
int k=partition(data,i-1,j,data[j]); 2C#b-Y 1~N  
SortUtil.swap(data,k,j); Su*Pd;  
if((k-i)>1) quickSort(data,i,k-1); G4G<Ow)`  
if((j-k)>1) quickSort(data,k+1,j); L6J.^tpO  
9eEA80i7  
} ET\rd5Po  
/** Ie4X k  
* @param data `/9&o;qM   
* @param i 4v.i!U# {  
* @param j +HoCG;C{  
* @return bM"d$tl$?'  
*/ =:m6ge@C&H  
private int partition(int[] data, int l, int r,int pivot) { ai;-_M+$  
do{ 3q.HZfN~  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Y/qs\c+  
SortUtil.swap(data,l,r); \{ff7_mLo  
} CykvTV Q  
while(l SortUtil.swap(data,l,r); T*](oA@  
return l; 3#Xv))w1  
} #xt-65^  
ltOsl-OpR  
} As(6E}{S  
x{1S!A^  
改进后的快速排序: a ~F\ 2`Q  
XRXQ 7\n  
package org.rut.util.algorithm.support; K.42 VM)F  
[k60=$y  
import org.rut.util.algorithm.SortUtil; +4V"&S|&  
c? >;UzM  
/** d%#5roR4<  
* @author treeroot %APeQy"6#^  
* @since 2006-2-2 Em/? 4&  
* @version 1.0 p`}G" DM  
*/ .ViOf){U\  
public class ImprovedQuickSort implements SortUtil.Sort { =Iy khrS  
XT{ukEvDR  
private static int MAX_STACK_SIZE=4096; bkIQ?cl<at  
private static int THRESHOLD=10; N9=?IFEe]  
/* (non-Javadoc) PF0AU T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nI,-ftMD-|  
*/ XF`?5G~~#  
public void sort(int[] data) { dQ_yb+<  
int[] stack=new int[MAX_STACK_SIZE]; ~!"z`&  
Wn5xX5H C  
int top=-1; s\q m  
int pivot; q!<n\X3]u  
int pivotIndex,l,r; jKp79].  
:nxBM#:xu  
stack[++top]=0; =|IY[2^  
stack[++top]=data.length-1; AIt;~x  
8-FW'bA  
while(top>0){ Vs, &  
int j=stack[top--]; Ev,b5KelD  
int i=stack[top--]; 5KL??ao-  
7rIEpN>*  
pivotIndex=(i+j)/2; #F ;@Qi3z  
pivot=data[pivotIndex]; j:[ #eC  
AV;x'H7G  
SortUtil.swap(data,pivotIndex,j); NH!x6p]n  
K#[ z5  
file://partition uw{ K&Hxw  
l=i-1; B=|m._OL]n  
r=j; U\(T<WX,  
do{ %D E_kwL  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); !5K5;M_Ih"  
SortUtil.swap(data,l,r); YkI_i(  
} sEcg;LFp  
while(l SortUtil.swap(data,l,r); pZ&?uo67_  
SortUtil.swap(data,l,j); Df=Xbf>jt9  
HA3d9`  
if((l-i)>THRESHOLD){ ~jMfm~  
stack[++top]=i; ^) 5*?8#  
stack[++top]=l-1; dd!Q[]$ }  
} C$^WW}S  
if((j-l)>THRESHOLD){ AO]1`b:  
stack[++top]=l+1; KWH:tFL.  
stack[++top]=j; 8P*wt'Q$  
} TH? wXd\  
C*Wyw]:r  
} z{A~d  
file://new InsertSort().sort(data); @K}Bll.E  
insertSort(data); '%KaAi$  
} !.[H !-V.  
/** _PGS"O?j  
* @param data sQ8kLS_q8  
*/ mC./,a[  
private void insertSort(int[] data) { ,`ju(ac!  
int temp; b*<Fi#x1=  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); D[<~^R;*  
} BH2JH>'X  
} Sj@VOW  
} Sv[$.^mb  
S=g E'"LT  
} }/}eZCaG  
y:,m(P  
归并排序:  u'qc=5  
jl,>0 MA  
package org.rut.util.algorithm.support; mLH,6rO9  
x1`zD*{  
import org.rut.util.algorithm.SortUtil; E\*M4n\!  
@_Es|(4  
/** & eWnS~hJ  
* @author treeroot ;BW9SqlN  
* @since 2006-2-2 xv 0y?#`z  
* @version 1.0 P7 R}oO_n:  
*/ Q=F^Y f  
public class MergeSort implements SortUtil.Sort{ iB3C.wd-  
6(V"xjK  
/* (non-Javadoc) {lNG:o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tiTh7qYi9  
*/ /9SNXjfbt  
public void sort(int[] data) { 0"DS>:Ntk  
int[] temp=new int[data.length]; |!*abc\`(`  
mergeSort(data,temp,0,data.length-1); mjJ/rx{kbw  
} xOdL ct  
-\V;Gw8mD  
private void mergeSort(int[] data,int[] temp,int l,int r){ Zxn>]Z_  
int mid=(l+r)/2; 7nk3^$|  
if(l==r) return ; j:xm>X'  
mergeSort(data,temp,l,mid); uF<\|y rFt  
mergeSort(data,temp,mid+1,r); YL9Tsw  
for(int i=l;i<=r;i++){ XrN]}S$N  
temp=data; vfOG(EkG.?  
} T,5(JP(h3  
int i1=l; NU.YL1  
int i2=mid+1; o;'-^ LJ  
for(int cur=l;cur<=r;cur++){ z i3gE$7  
if(i1==mid+1) Jp +h''t  
data[cur]=temp[i2++]; Ql? >,FZ  
else if(i2>r) F7U$ 7(I2G  
data[cur]=temp[i1++]; HC(o;,spO  
else if(temp[i1] data[cur]=temp[i1++]; ?<D1] Xv  
else ky@DH(^>  
data[cur]=temp[i2++]; `a]feAl  
} CAbT9W z&  
} P B"nf|pm  
_QiGrC  
} ~Ut?'}L( d  
9DaoM OPEI  
改进后的归并排序: hXQo>t-$  
|k=5`WG  
package org.rut.util.algorithm.support; Lr<?eWdCwJ  
rwY{QBSf  
import org.rut.util.algorithm.SortUtil; Z]=9=S| .4  
>(eR0.x  
/** [_zoJ  
* @author treeroot o`7B@]  
* @since 2006-2-2 W>m #Mz  
* @version 1.0 HQ`A.E2  
*/ `lN Z|U  
public class ImprovedMergeSort implements SortUtil.Sort { og8"#%  
+3o 4KB}  
private static final int THRESHOLD = 10; !l~3K(&4  
i 2n66d  
/* `bcCj~j  
* (non-Javadoc) c$~J7e6$  
* x}H%NzR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m9Hdg^L  
*/ 77~l~EX  
public void sort(int[] data) { K]yUPx  
int[] temp=new int[data.length]; `d!~)D  
mergeSort(data,temp,0,data.length-1); +*KDtqZjk  
} & 6~AY :0r  
[:cZDVaA|  
private void mergeSort(int[] data, int[] temp, int l, int r) { DWcEl:  
int i, j, k; .$s=E8fW  
int mid = (l + r) / 2; x<h-F  
if (l == r) $jL+15^N0+  
return; ~A-VgBbU>_  
if ((mid - l) >= THRESHOLD) ~+Ows  
mergeSort(data, temp, l, mid); x).`nZ1  
else bTc'E#  
insertSort(data, l, mid - l + 1); _43 :1!os  
if ((r - mid) > THRESHOLD) 3R ZD=`  
mergeSort(data, temp, mid + 1, r); 7A4 6?kfu  
else J)_IfbY  
insertSort(data, mid + 1, r - mid); 99&PY[f:{  
MI*@^{G  
for (i = l; i <= mid; i++) { cK6IyJx-  
temp = data; 1iIag}?p  
} Q)l~?Fx  
for (j = 1; j <= r - mid; j++) { 6Z68n  
temp[r - j + 1] = data[j + mid]; d> L*2 g  
} If%**o  
int a = temp[l]; 1}b1RKKj<  
int b = temp[r]; ]|)M /U *  
for (i = l, j = r, k = l; k <= r; k++) { & *!) d"  
if (a < b) { 5=9gH  
data[k] = temp[i++]; vm`\0VGSW  
a = temp; E>w|i  
} else { eVujur$P  
data[k] = temp[j--]; t7b\#o  
b = temp[j]; a OTrng  
} $Qq5Fx9kU  
} \C;F5AO  
} -'Y@yIb  
XyE%<]  
/** _chX {_Hu-  
* @param data i`HXBq!|w  
* @param l .GNl31f0  
* @param i ]>k>Z#8E*  
*/ 7="I;  
private void insertSort(int[] data, int start, int len) { !nyUAZ9 :  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); IL N0/eH  
} Ikj_ 0/%F  
} g'{hp:  
} e6igx  
} "ba>.h,#'  
Xw{Qktn  
堆排序: %[7<GcWl  
WbDD9ZS  
package org.rut.util.algorithm.support;  h@"u==0  
zwpgf  
import org.rut.util.algorithm.SortUtil; |!?`KO{  
|4A938'4j  
/** ck\gazo~q  
* @author treeroot sH{ 4.tw  
* @since 2006-2-2 ik Pm,ZN  
* @version 1.0 5W~-|8m  
*/ aO>Nev  
public class HeapSort implements SortUtil.Sort{ >KMTxHE`+  
K18Sj,]B  
/* (non-Javadoc) #ysSfM6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /\|AHM  
*/ e x`mu E  
public void sort(int[] data) { >ISN2Kn   
MaxHeap h=new MaxHeap(); > ;zQ.2*  
h.init(data); hp)k[|u;  
for(int i=0;i h.remove(); ~q05xy8  
System.arraycopy(h.queue,1,data,0,data.length); /E0/)@pDq  
} )#_:5^1  
qLh[BR  
private static class MaxHeap{ (L7@ez  
u+/1ryp  
void init(int[] data){ sFWH*k dP?  
this.queue=new int[data.length+1]; E A}Vb(2  
for(int i=0;i queue[++size]=data; NgPY/R>  
fixUp(size); 1>e%(k2w%  
} UO{3v ry48  
} 64h$sC0z/e  
}iCcXZ&5^  
private int size=0; *^b<CZd9  
;fnE"}  
private int[] queue; "=ogO/_Q"  
li~#6$  
public int get() { vynchZ+g]  
return queue[1]; qz2j55j   
} (S4[,Sx6E  
CEr*VsvjsU  
public void remove() { gm}[`GMU  
SortUtil.swap(queue,1,size--); yQ M<(;\O  
fixDown(1); \ :D'u<8E  
} S&`iEwG  
file://fixdown "T,^>xD  
private void fixDown(int k) { /6Vn WrN_  
int j; p swEIa  
while ((j = k << 1) <= size) { n.\|NR'v  
if (j < size %26amp;%26amp; queue[j] j++; ?g\SF}2  
if (queue[k]>queue[j]) file://不用交换 7o5~J)qIC  
break; JK@" &  
SortUtil.swap(queue,j,k); tfb_K4h6,  
k = j; sLh %k  
} `lA[-x~  
} / %:%la%  
private void fixUp(int k) { 5EqC.g.  
while (k > 1) { .8K ~ h  
int j = k >> 1; ~\~K ,v  
if (queue[j]>queue[k]) 1}"PLq(  
break; x%\m/_5w%  
SortUtil.swap(queue,j,k); Kgw_c:/'  
k = j; K!a4>Du{  
} xp<p(y8e1d  
} `zZGL&9m`  
y~AF|Dk=  
} 'E#;`}&Ah  
wX!>&Gc.  
} V0!.>sX9  
A(<"oAe|  
SortUtil: AJ`R2 $  
|?KdQeL  
package org.rut.util.algorithm; h-`*S&mZ  
WOaj_o  
import org.rut.util.algorithm.support.BubbleSort; *f4BD||  
import org.rut.util.algorithm.support.HeapSort; n :P5m9T  
import org.rut.util.algorithm.support.ImprovedMergeSort; ?()$imb*  
import org.rut.util.algorithm.support.ImprovedQuickSort; M~/R1\'&j  
import org.rut.util.algorithm.support.InsertSort; ,\cO>y@  
import org.rut.util.algorithm.support.MergeSort; `aw5"ns^V  
import org.rut.util.algorithm.support.QuickSort; YPY'[j(p`n  
import org.rut.util.algorithm.support.SelectionSort; GE0,d  
import org.rut.util.algorithm.support.ShellSort; .oR_r1\y  
NtnKS@Ht  
/** ,{_;q:  
* @author treeroot y$n`+%_  
* @since 2006-2-2 eGJ}';O,g  
* @version 1.0 W7ffdODb  
*/ 7<ZCeM2x  
public class SortUtil { ;0!rq^JG  
public final static int INSERT = 1; ,9:0T LLR  
public final static int BUBBLE = 2; `p. O  
public final static int SELECTION = 3; k}o*=s>M  
public final static int SHELL = 4; "uthFE  
public final static int QUICK = 5; z]J pvw`p  
public final static int IMPROVED_QUICK = 6; #*|0WaC  
public final static int MERGE = 7; KW~fW r8  
public final static int IMPROVED_MERGE = 8; }N6r/ VtOQ  
public final static int HEAP = 9; d^Jf(NE0Yo  
Xw2tCRzD  
public static void sort(int[] data) { ?TXe.h|u  
sort(data, IMPROVED_QUICK); V9"?}cR/W;  
} tLzX L *  
private static String[] name={ o/U"'FP  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ZTwCFn  
}; NpIx\\d  
^:c"%<"='  
private static Sort[] impl=new Sort[]{ Vu`O%[Q/  
new InsertSort(), BVt)~HZ  
new BubbleSort(), uWSfr(loX  
new SelectionSort(), u0vq`5L  
new ShellSort(), MiX*PqNTM  
new QuickSort(), ct3^V M&/  
new ImprovedQuickSort(), =h{j F7  
new MergeSort(), X!w&ib-  
new ImprovedMergeSort(), @4Ox$M  
new HeapSort() n#|pR2  
}; 3;h%mk KQ+  
\D]H>i$  
public static String toString(int algorithm){ Rf~? u)h1  
return name[algorithm-1]; oq>8  
} xqua>!mqS  
{{\ d5CkX  
public static void sort(int[] data, int algorithm) { pM^r8kIH  
impl[algorithm-1].sort(data); '*PJ-=G  
} *&\fBi]  
 #)r  
public static interface Sort { JlF$|y,gV,  
public void sort(int[] data); VZ:L K  
} %z_PEqRj  
fs=W(~"  
public static void swap(int[] data, int i, int j) { :]viLw\&g  
int temp = data; . >{.!a  
data = data[j]; 7Qc 4Oz:t  
data[j] = temp; d1`us G"  
} cTR@ :sm  
} T%\f$jh6  
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