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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。 =<-tD<  
插入排序: @MfuV4*  
O_*(:Z  
package org.rut.util.algorithm.support; !B==cNq  
Rn O%8Hk  
import org.rut.util.algorithm.SortUtil; !XjvvX"j  
/** )k F/"'o  
* @author treeroot "7R"(.~>  
* @since 2006-2-2 xCH,d:n=  
* @version 1.0 L[zg2y  
*/ iSTr;>A  
public class InsertSort implements SortUtil.Sort{ QK0  
Vp $]  
/* (non-Javadoc) *|n::9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) { 7y.0_Y  
*/ P5;LM9W  
public void sort(int[] data) { t<O5_}R%d  
int temp; w=I' CMRt  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); wj>mk  
} a a<9%j  
} ~Mv@Bl  
} GS|sx  
&Z682b$  
} <uP>  
b _fI1f|  
冒泡排序: z\Y+5<a  
jB]tq2i  
package org.rut.util.algorithm.support; :sRV]!Iw  
qvz2u]IOw  
import org.rut.util.algorithm.SortUtil; Wjt1NfS&  
`nc cRy< l  
/** ![WX -"lW  
* @author treeroot Nw@tlT4  
* @since 2006-2-2 DG8LoWZ  
* @version 1.0 _8C0z=hz  
*/ 1xM'5C?~7  
public class BubbleSort implements SortUtil.Sort{ V\zf yH\~  
Wvl>iHB  
/* (non-Javadoc) \oF79   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  ^o+}3=  
*/ v*%#Fp,g8  
public void sort(int[] data) { -k{n"9a9?  
int temp; 03*` T  
for(int i=0;i for(int j=data.length-1;j>i;j--){ aG7QLCL  
if(data[j] SortUtil.swap(data,j,j-1); qu[ ~#  
} Gx ?p,Fj  
} CIh@H6|  
} D%v4B`4ua'  
} ~LPxVYhK  
~ \tI9L?|A  
} {aI8p}T  
4l2i'H  
选择排序: 6#XB'PR2p  
ODK$G [-  
package org.rut.util.algorithm.support; &?^S`V8R*  
E 3b`GRay  
import org.rut.util.algorithm.SortUtil; !3>(fj+QS  
<@FOqi{o{  
/** JicAz1P1W  
* @author treeroot hXi^{ntw,  
* @since 2006-2-2 p<>%9180!F  
* @version 1.0 Zam.g>{]  
*/ ^yH!IRRAq  
public class SelectionSort implements SortUtil.Sort { PL/as3O^A  
.Gv9RKgd~  
/* E"5 z T1d  
* (non-Javadoc) #q1Qa_LXc  
* U'S}7gya  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]Q=D'1 MM  
*/ gB@Xi*  
public void sort(int[] data) { 2"lDKjj  
int temp; 43pQFDWa  
for (int i = 0; i < data.length; i++) { <=8REA?  
int lowIndex = i; 6k;__@B,  
for (int j = data.length - 1; j > i; j--) { LRBcW;.Su  
if (data[j] < data[lowIndex]) { 7QP%Pny%  
lowIndex = j; vCT5do"C&  
} fk)ts,p?  
} ?Y2ZqI  
SortUtil.swap(data,i,lowIndex); ~vnG^y>%  
} -x2/y:q`  
}  5k.NZ  
eRQ}`DjTk  
} FX7=81**4  
z]ZhvH7-  
Shell排序: a&~_ba+  
3DnlXH(h1  
package org.rut.util.algorithm.support; 9^h\vR|]S  
}^WQNdws56  
import org.rut.util.algorithm.SortUtil; <`*}$Zh  
Pk[:+. f(  
/** an^"_#8DA@  
* @author treeroot `m?%{ \  
* @since 2006-2-2 U>6MT@\  
* @version 1.0 {4Y@ DQ-  
*/ `O(ec  
public class ShellSort implements SortUtil.Sort{ :G9+-z{Y&  
2#l<L>#  
/* (non-Javadoc) ep .AW'+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T6JN@:8  
*/ f>ohu^bd  
public void sort(int[] data) { Zws[}G"7h  
for(int i=data.length/2;i>2;i/=2){ Ar4E $\W  
for(int j=0;j insertSort(data,j,i); LAeJz_9U  
} VTySKY+  
} S?nk9 T+  
insertSort(data,0,1); 6 ]W!>jDc  
} #k8bZ?*:  
![3#([>4>  
/** xRYL{+  
* @param data t9S zZ2E  
* @param j Xu`c_  
* @param i Mit,X  
*/ 8*3o 9$Pj  
private void insertSort(int[] data, int start, int inc) { pDb5t>  
int temp; 'gk.J  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); L^} Z:I  
} 0F-X.Dq  
} 1C\OL!@L  
} S!<YVQq  
lxy_O0n  
} y0cHs|8  
;NH 5 L,  
快速排序: ?|'+5$  
B1T:c4:N  
package org.rut.util.algorithm.support; 84^ '^nd  
SA&0f&07i  
import org.rut.util.algorithm.SortUtil; F>Rz}-Fy  
km2('t7?  
/** ;LE4U OK  
* @author treeroot Jm$. $B&I  
* @since 2006-2-2 }]_/:KUt  
* @version 1.0 ;]zV ?9  
*/ K,e"@G  
public class QuickSort implements SortUtil.Sort{ 0UZ>y/ C)=  
QQUeY2}  
/* (non-Javadoc) \O5`R-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )&]gX  
*/ ,/AwR?m  
public void sort(int[] data) { gRv5l3k  
quickSort(data,0,data.length-1); SLp &_S@4  
} P'f =r%  
private void quickSort(int[] data,int i,int j){ w naP?|/  
int pivotIndex=(i+j)/2; {'VP_ZS1v  
file://swap r(xh5{^x  
SortUtil.swap(data,pivotIndex,j); ,gGIkl&  
t-Rfy`I3  
int k=partition(data,i-1,j,data[j]); cHOtMPyQ  
SortUtil.swap(data,k,j); MTo<COp($  
if((k-i)>1) quickSort(data,i,k-1); nmZz`P9g  
if((j-k)>1) quickSort(data,k+1,j); << `*o[^L  
"V-k_d "  
} > nV~5f+  
/** A^:[+PJHN  
* @param data >Jh*S`e  
* @param i F8M&.TE_3  
* @param j {Vw+~8  
* @return CsHHJgx  
*/ IWcgh`8  
private int partition(int[] data, int l, int r,int pivot) { OV3l)73?t  
do{ ,T@+QXh  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); i^Vb42%y  
SortUtil.swap(data,l,r); IvGQ7 VLr  
} "s!!\/^9C  
while(l SortUtil.swap(data,l,r); 0+MNu8t  
return l; twElLOE  
} 2g5i3C.q$  
HA&7 ybl  
} $U%M]_  
r/zuo6"5  
改进后的快速排序: 0JzH dz  
c} )U:?6  
package org.rut.util.algorithm.support; 3/c3e{,!  
85CH% I#  
import org.rut.util.algorithm.SortUtil; ap=m5h27  
~_opU(;f  
/** aX`"V/  
* @author treeroot O O?e8OU  
* @since 2006-2-2 FsQeyh>  
* @version 1.0 ,5oe8\uz  
*/ "1 O!Ck_n  
public class ImprovedQuickSort implements SortUtil.Sort { %@tKcQ  
O ]o7  
private static int MAX_STACK_SIZE=4096; 68Po`_/s  
private static int THRESHOLD=10; O b'B?  
/* (non-Javadoc) ]-[M&i=+&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |,3s]b`  
*/ n^aSio6  
public void sort(int[] data) { U-Ia$b-5!  
int[] stack=new int[MAX_STACK_SIZE]; 2N*XzVplN  
Q#"p6ZmI  
int top=-1; wZ6D\I  
int pivot; d: D`rpcC  
int pivotIndex,l,r; o V"d%ks  
xxjg)rVuy  
stack[++top]=0; e ewhT ^  
stack[++top]=data.length-1; {gh41G;n  
2gM=vaiH=  
while(top>0){ _CqVH5U?  
int j=stack[top--]; _8t5rF  
int i=stack[top--]; @>`+eg][?P  
<vMna< /d  
pivotIndex=(i+j)/2; PL$*)#S"$  
pivot=data[pivotIndex]; *D`]7I~}  
3ARvSz@5  
SortUtil.swap(data,pivotIndex,j); :})(@.H  
Z] ?Tx2|7  
file://partition N(i%Oxp1  
l=i-1; q#LB 2M  
r=j; U%%fKL=S  
do{ 9/A$ 3#wF  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); od~^''/b  
SortUtil.swap(data,l,r); \H(r }D$u<  
} _vOV(#q2a  
while(l SortUtil.swap(data,l,r); ,n\"zYf ]^  
SortUtil.swap(data,l,j); >,c$e' h  
-7MR2)U  
if((l-i)>THRESHOLD){ ^n8ioL\*i  
stack[++top]=i; AI KLJvte  
stack[++top]=l-1; & \<!{Y<'  
} MJ5Ymt a  
if((j-l)>THRESHOLD){ FY;\1bt<<  
stack[++top]=l+1; d4ANh+}X"_  
stack[++top]=j; ,TeJx+z^  
} )Ve-)rZ  
V~#e%&73FH  
} W|@7I@@$"  
file://new InsertSort().sort(data); <Jt H/oN  
insertSort(data); Bmx+QO  
} Zop3[-  
/** x)evjX=q  
* @param data <Q57}[$*)  
*/ N:R6 b5 =}  
private void insertSort(int[] data) { UN ;9h9  
int temp; &O|!w&  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); -CV_yySc  
} Pjz_KO/  
} WFWQ;U{|  
} ^gw htnI  
Y~I$goT  
} GMk\ l  
_#[~?g`  
归并排序: SCwAAE9s]  
pe^hOzVv  
package org.rut.util.algorithm.support; (EW<Ggi  
)m8ve)l  
import org.rut.util.algorithm.SortUtil; [3$L}m  
B$A`thQp  
/** R-7.q  
* @author treeroot Z_b^K^4  
* @since 2006-2-2 1XfH,6\8i  
* @version 1.0 :~uvxiF  
*/ Yz<,`w5/6~  
public class MergeSort implements SortUtil.Sort{ V+\L@mz;  
%>,B1nt  
/* (non-Javadoc) un*Ptc2%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (pBPf  
*/ R%gkRx[  
public void sort(int[] data) { I+JWDYk  
int[] temp=new int[data.length]; +Dvdv<+  
mergeSort(data,temp,0,data.length-1); 2Y~UeJ_\Lq  
} TtZZjeg+V  
Kmy'z  
private void mergeSort(int[] data,int[] temp,int l,int r){ P9d%80(b4  
int mid=(l+r)/2; \VY!= 9EV  
if(l==r) return ; n oWjZ  
mergeSort(data,temp,l,mid); NO$n-<ag  
mergeSort(data,temp,mid+1,r); |E{tS,{OhJ  
for(int i=l;i<=r;i++){ ]JGh[B1gh  
temp=data; D.7,xgH  
} K)-Gv|*t  
int i1=l; [^N8v;O  
int i2=mid+1; 4Cd#S9<ed  
for(int cur=l;cur<=r;cur++){ +f5|qbX/\  
if(i1==mid+1) \R!.VL3Tx$  
data[cur]=temp[i2++]; GUX! kj  
else if(i2>r) Gp 8%n  
data[cur]=temp[i1++]; $O\I9CGr$  
else if(temp[i1] data[cur]=temp[i1++]; >Xz=E0;^Ua  
else ? PIq/[tk  
data[cur]=temp[i2++]; ~Te9Lq|  
} WUC-* (  
} `2WtA_  
^Rel-=Z$B  
} VV_Zrje  
[G.4S5FX.]  
改进后的归并排序: 0<g;g%   
 uj8G6'm%  
package org.rut.util.algorithm.support; V)pn)no'V  
#sHA!@ |  
import org.rut.util.algorithm.SortUtil; m7~<z>5$  
_'eG   
/** |)%]MK$;  
* @author treeroot /6?A#%hc  
* @since 2006-2-2 4[\$3t.L  
* @version 1.0 / 7i>0J]  
*/ q,e{t#t  
public class ImprovedMergeSort implements SortUtil.Sort { n jfh4}g:  
y#Cp Vm#!>  
private static final int THRESHOLD = 10; #F>7@N:5  
]^f7s36  
/* X jJV  
* (non-Javadoc) tYe+7s  
* Z`FEB0$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uq/z.m  
*/ AD$$S.zoD<  
public void sort(int[] data) { |3Fo4K%+  
int[] temp=new int[data.length]; Mz?xvP?z  
mergeSort(data,temp,0,data.length-1); V XE85  
} \vH /bL  
Gky e  
private void mergeSort(int[] data, int[] temp, int l, int r) { R04%;p:k#  
int i, j, k; k!&G ;6O-  
int mid = (l + r) / 2; |igr3p5Fw  
if (l == r) PIZnzZ@Z;  
return; "7]YvZYu0  
if ((mid - l) >= THRESHOLD) >DFpL$oP  
mergeSort(data, temp, l, mid); Lc&LF*  
else nZ4JI+Q)~  
insertSort(data, l, mid - l + 1); +%O_xqq  
if ((r - mid) > THRESHOLD) P^lzl:|  
mergeSort(data, temp, mid + 1, r); /mi9 q  
else \2UtT@3|C  
insertSort(data, mid + 1, r - mid); SxX2+|0g`g  
S.: m$s  
for (i = l; i <= mid; i++) { U@ ;W^Mt  
temp = data; gY\g+df-  
} @yGK $<R  
for (j = 1; j <= r - mid; j++) { AZj `o  
temp[r - j + 1] = data[j + mid]; d9j+==S <  
} J|O=w(  
int a = temp[l]; )td?t.4  
int b = temp[r];  |UudP?E  
for (i = l, j = r, k = l; k <= r; k++) { $0kuR!U.N  
if (a < b) { qdM=}lbc  
data[k] = temp[i++]; gs xT  
a = temp; .C 6wsmQ  
} else { @Cnn8Y&'  
data[k] = temp[j--]; {OH @z!+d  
b = temp[j]; !Q/%N#  
} s8r|48I#;  
} G{ |0}  
} "e3T;M+  
i 4}4U  
/** WxLmzSz{xD  
* @param data RJYB=y8l  
* @param l P"Scs$NOU?  
* @param i bNH72gX2Yh  
*/ tom1u>1n  
private void insertSort(int[] data, int start, int len) { P' ";L6h  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); @]{+9m8G@  
} IIZu&iZo\  
} wsfN \6e  
} zL^`r)H  
} Kyr3)1#J  
O_E\(So  
堆排序: 0x N1Xm0d  
u{asKUce\  
package org.rut.util.algorithm.support; 6\+ ZTw  
jD<fu  
import org.rut.util.algorithm.SortUtil; M1Frn n  
lc:dKGF6  
/** ~x(1g;!^  
* @author treeroot p aQ"[w  
* @since 2006-2-2 b}f#[* Z  
* @version 1.0 j O-H 1@;  
*/ J~e%EjN5e  
public class HeapSort implements SortUtil.Sort{ T#o?@ ;  
o+w G6 9  
/* (non-Javadoc) '\,|B x8Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?k 4|;DD  
*/ Iu)76Y@=5=  
public void sort(int[] data) { (G E)  
MaxHeap h=new MaxHeap(); MV(Sb:RZ  
h.init(data); fwN'5ep  
for(int i=0;i h.remove(); 6Mh;ld@  
System.arraycopy(h.queue,1,data,0,data.length); F2N)|C<  
} sy\w ^]  
wU"0@^k]<  
private static class MaxHeap{ k2-:! IE  
FFG/v`NM  
void init(int[] data){ CnXl 7"  
this.queue=new int[data.length+1]; ,/bSa/x`  
for(int i=0;i queue[++size]=data; bG|aQ2HW  
fixUp(size); odPdWV,&*  
} &'mq).I2  
} G*`H2-,  
,Ky-3p>  
private int size=0; bV3az/U  
I7S#vIMXR.  
private int[] queue; .5tE, (<?  
YKWiZ  
public int get() { #GlQwk3  
return queue[1]; 5n1aRA1  
} Qf'%".*=~8  
<=yqV]JR  
public void remove() { &az :YTq  
SortUtil.swap(queue,1,size--); YF4?3K0F:k  
fixDown(1); #s}cK  
} {hNvCk  
file://fixdown (C&Lpt_  
private void fixDown(int k) { %XQ!>BeE  
int j; d3IMQ_k  
while ((j = k << 1) <= size) { NDqvt$  
if (j < size %26amp;%26amp; queue[j] j++; C4].egVg  
if (queue[k]>queue[j]) file://不用交换 "44A#0)B'l  
break; NI%&Xhn!*>  
SortUtil.swap(queue,j,k); Cj +{%^#  
k = j; #+Pk_?  
} O} &%R:  
} eM) I%  
private void fixUp(int k) { )tD[Ffvr  
while (k > 1) { c1wP/?|.>  
int j = k >> 1; FG6bKvEQm^  
if (queue[j]>queue[k]) wuV*!oefo  
break; MB"TwtW  
SortUtil.swap(queue,j,k); }~akVh`3  
k = j; h{5K9$9=  
} Uc[ @]  
} 1FPt%{s3  
C||9u}Q<  
} Hf#VW^  
6F)^8s02h  
} $GI jWlAh  
Pw :{  
SortUtil: GdlzpBl  
h,palP6^  
package org.rut.util.algorithm; O,c}T7A'?w  
sx]kH$  
import org.rut.util.algorithm.support.BubbleSort; ?nwFc3qw  
import org.rut.util.algorithm.support.HeapSort; [#3*R_#8R  
import org.rut.util.algorithm.support.ImprovedMergeSort; [2l2w[7Rid  
import org.rut.util.algorithm.support.ImprovedQuickSort; <aPbKDF~V  
import org.rut.util.algorithm.support.InsertSort; nRSiW*;R  
import org.rut.util.algorithm.support.MergeSort; kLfk2A;'i  
import org.rut.util.algorithm.support.QuickSort; Y+kfMAv  
import org.rut.util.algorithm.support.SelectionSort; m) -D rbE  
import org.rut.util.algorithm.support.ShellSort; 6 o!*bWh  
'  ~F  
/** e{}oQK  
* @author treeroot )<+t#5"  
* @since 2006-2-2 d OYEl<!J  
* @version 1.0 ->rr4xaKC  
*/ t!285J8tn  
public class SortUtil { kgZiyPcw  
public final static int INSERT = 1; YPU*T&~  
public final static int BUBBLE = 2; ox&PFI0Gn  
public final static int SELECTION = 3; 4owM;y  
public final static int SHELL = 4; #86=[*Dr  
public final static int QUICK = 5; >Hd0l L  
public final static int IMPROVED_QUICK = 6; >%?kp[  
public final static int MERGE = 7; .:U`4 ->E  
public final static int IMPROVED_MERGE = 8; -V_iv/fmM  
public final static int HEAP = 9; s-[v[w'E  
<=g{E-  
public static void sort(int[] data) { |3:e$  
sort(data, IMPROVED_QUICK); NU <K+k  
} .IkQo`_s:  
private static String[] name={ i*\\j1mf  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" d7 W[.M$]  
}; vhz[H  
_=Eb:n+X  
private static Sort[] impl=new Sort[]{  ~0T;T  
new InsertSort(), tF&g3)D:NV  
new BubbleSort(), mV'XH  
new SelectionSort(), Jjr&+Q^3Tu  
new ShellSort(), v*[oe  
new QuickSort(), KccIYn~  
new ImprovedQuickSort(), i .GJO +K  
new MergeSort(), 1I#]OY#>  
new ImprovedMergeSort(), AW')*{/(Ii  
new HeapSort() Fo:60)Lr  
}; p\).zuEf.  
`m_ ('N  
public static String toString(int algorithm){ [(kC/W)!  
return name[algorithm-1]; 9!u&8#i  
} =K:)%Qh  
a^5.gfzA  
public static void sort(int[] data, int algorithm) { p G-9H3[f#  
impl[algorithm-1].sort(data); B_3:.1>"BM  
} .VG5 / 6zp  
IJQ" *;  
public static interface Sort { O+w82!<:  
public void sort(int[] data); 5 >c,#*  
} xJ(}?0h-X  
X?gH(mn  
public static void swap(int[] data, int i, int j) { ,VYUQE>\  
int temp = data; ^Q9;ro*;ck  
data = data[j]; ]K!NLvz  
data[j] = temp; +!JTEKHKH  
} O}Mu_edM  
} 7mT iO?/y<  
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