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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。 !8lG"l|,l  
插入排序: )h]~< fU  
|`+kZ-M*  
package org.rut.util.algorithm.support; ]v(8i3P84  
0x7F~%%2  
import org.rut.util.algorithm.SortUtil; V(I!HT5.W  
/** x$Y44v'>  
* @author treeroot t~U:Ea[gd  
* @since 2006-2-2 X; I:i%-  
* @version 1.0 /2N'SOX  
*/ G0oY`WXOB  
public class InsertSort implements SortUtil.Sort{ 4wjy)VD_  
)h6hN"#V5  
/* (non-Javadoc) |5oK04<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UCG8=+t5T  
*/ e/Wrm^]y  
public void sort(int[] data) { Ydm 0  
int temp; 6i|5`ZO  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); x)N$.7'9OJ  
} )9I>y2WU~  
} Aslh}'$}-  
} #5)0~4%l  
qB6@OS  
} #S)] `YW  
sL" h  
冒泡排序: @ol=gBU  
2l]*><q|  
package org.rut.util.algorithm.support; t5t,(^;f  
I,TJV)B  
import org.rut.util.algorithm.SortUtil; ,cZhkXd  
l/1u>'  
/** GKT2x '(e  
* @author treeroot ~A@T_ *0  
* @since 2006-2-2 cq lA"Eof  
* @version 1.0 G&=4@pLY5  
*/ ,)/gy)~#  
public class BubbleSort implements SortUtil.Sort{ (3cJ8o>&  
hgIqr^N9  
/* (non-Javadoc) H'KCIqo  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P 4Vi~zMX  
*/ <7'`N\a  
public void sort(int[] data) { a%| I'r  
int temp; FvYgpbEZ  
for(int i=0;i for(int j=data.length-1;j>i;j--){ |osu4=s|  
if(data[j] SortUtil.swap(data,j,j-1); XJg8-)T#  
} j/.$ (E   
} \ #<.&`8B  
} EQe!&;   
} "NEg]LB5  
.5L|(B=H  
} s?Lx\?T  
>QyJRMY  
选择排序: .#^ta9^t7  
mm}y/dO~}  
package org.rut.util.algorithm.support; Y-2IAJHS8  
0lpkG ="&r  
import org.rut.util.algorithm.SortUtil; NSe H u k  
mj{B_3b5  
/** mJ+M|#Ox  
* @author treeroot #1Zqq([@  
* @since 2006-2-2 T_t5Tg~i[N  
* @version 1.0 5OEo(&  
*/ J)7\k$D  
public class SelectionSort implements SortUtil.Sort { p7{2/m j  
Lk%`hsv  
/* #(@!:f1  
* (non-Javadoc) z$g cK>@l  
* y;Ez|MS   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sX8d8d`}  
*/ Xir ERc.e  
public void sort(int[] data) { OlU')0Y  
int temp; ->Z9j(JU  
for (int i = 0; i < data.length; i++) { x,wXR=H  
int lowIndex = i; V52>K$j  
for (int j = data.length - 1; j > i; j--) { @JW HG1qJ  
if (data[j] < data[lowIndex]) { (g" {A  
lowIndex = j; 0gRj3al(  
} 8Z&M}Llk  
} ,LE15},  
SortUtil.swap(data,i,lowIndex); G)|Xj70  
} *y+N-uq  
} ;X_bDiG$  
I+oe{#:.  
} [8C|v61Y  
m}UcF oaO  
Shell排序: T`?7z+2A  
o*MiKgQ&  
package org.rut.util.algorithm.support; Xr:gm`[  
u+/Uc:XK)  
import org.rut.util.algorithm.SortUtil; {c  : 7:  
6a*?m{  
/** ~];r{IU  
* @author treeroot 'FNnFm  
* @since 2006-2-2 Cn"_x  
* @version 1.0 1Kjqs)p^  
*/ YD3jP}Ym  
public class ShellSort implements SortUtil.Sort{ GB%kxtGD;\  
,NO2{Ha$  
/* (non-Javadoc) n;@.eC,T/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Hs:0j$  
*/ t1JU_P  
public void sort(int[] data) { ol0i^d*9F  
for(int i=data.length/2;i>2;i/=2){ ^ps6\>=0cW  
for(int j=0;j insertSort(data,j,i); &Fiesi!tET  
} 7vo8lnQ{  
} 4,,DA2^!  
insertSort(data,0,1); %p48=|+  
} _sb~eB~<(  
i:a*6b.U@N  
/** -Oi8]Xw^@y  
* @param data @T"-%L8PL  
* @param j ! k[JP+;  
* @param i *{_N*p\{  
*/ ^h$^j  
private void insertSort(int[] data, int start, int inc) { b(IZ:ekZ5  
int temp; (himx8Uml2  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); <x8I<K  
} lw]uH<v  
} eo@kn yA<&  
} hv  
iQJa6QF&:  
} #a`D6;  
)/t&a$[  
快速排序: (*M*muk  
.5"s[(S  
package org.rut.util.algorithm.support; lfAiW;giJ  
TU6(Q,Yi|  
import org.rut.util.algorithm.SortUtil; $`A{-0=x\U  
S$O5jX 0  
/** 4#Xz-5v  
* @author treeroot !/ a![Ne  
* @since 2006-2-2 vbD""  
* @version 1.0 _Sg"|g  
*/ gSa!zQN6  
public class QuickSort implements SortUtil.Sort{ {#.<hPXn  
i]#"@xQ  
/* (non-Javadoc) KE4#vKV0yC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'fs tfk  
*/ PNz]L  
public void sort(int[] data) {  bUsX~R-  
quickSort(data,0,data.length-1); ur:8`+" (  
} F pT$D  
private void quickSort(int[] data,int i,int j){ )Q 5 x%  
int pivotIndex=(i+j)/2; dWx@<(`OC  
file://swap d5>EvK U  
SortUtil.swap(data,pivotIndex,j); t~H0Qeb[v=  
'3w%K+eJY  
int k=partition(data,i-1,j,data[j]); YV8PybThc  
SortUtil.swap(data,k,j); #bJp)&LO  
if((k-i)>1) quickSort(data,i,k-1); \@Gcx}Y8h  
if((j-k)>1) quickSort(data,k+1,j); ~,_@|,)  
BbM/Rd1tAm  
} eslvg#Q  
/**  _!_^B  
* @param data NQGa=kXeJ  
* @param i 4ClSl#X#i  
* @param j C hQ] d  
* @return nQOzKw<j%  
*/ TI}a$I*  
private int partition(int[] data, int l, int r,int pivot) { MgP&9  
do{ No8-Hm  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); d A'0'M  
SortUtil.swap(data,l,r); %)72glB  
} 3-=AmRxW't  
while(l SortUtil.swap(data,l,r); ^AShy`o^X  
return l; Z l;TS%$  
} 1:iB1TclP  
[dR#!"6t  
} id588Y78  
(j~T7og  
改进后的快速排序: ;"2VU"  
VP~(;H5%  
package org.rut.util.algorithm.support; ]WzeJ"r {3  
UlWm). b;v  
import org.rut.util.algorithm.SortUtil; o[1#)&  
OkAgO3>Y/  
/** ^D1gcI  
* @author treeroot 2cO6'?b  
* @since 2006-2-2 1S(n3(KRk$  
* @version 1.0 ]bAVOKm-  
*/ =]5f\f6  
public class ImprovedQuickSort implements SortUtil.Sort { +J85Re `  
Sgr. V)  
private static int MAX_STACK_SIZE=4096; ^D]J68)#a  
private static int THRESHOLD=10; blWtC/!Aq;  
/* (non-Javadoc) #1C]ZV] B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eIEL';N6  
*/ Qcks:|5  
public void sort(int[] data) { @U4hq7xzV2  
int[] stack=new int[MAX_STACK_SIZE]; 1{5t.  
) "?eug}D  
int top=-1; aM xd"cTzx  
int pivot; ?K;l 5$?%  
int pivotIndex,l,r; u|Oc+qA(  
1l/t|M^I  
stack[++top]=0; W mbIz[un  
stack[++top]=data.length-1; ${E^OE  
A|,qjiEJCc  
while(top>0){ C0K: ffv;<  
int j=stack[top--]; fdWqc_  
int i=stack[top--]; 0l4f%'f  
CPL,QVO9  
pivotIndex=(i+j)/2; &S`g&  
pivot=data[pivotIndex]; pGfGGY>i%  
#?k</~s6M`  
SortUtil.swap(data,pivotIndex,j); |d z2Drc  
>&Oql9_  
file://partition BzzZ.AH~  
l=i-1; `a:3S@n(}  
r=j; Y+o\?|q-E  
do{ 2y \ogF  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); zRa2iCi  
SortUtil.swap(data,l,r); ar\ K8mj  
} $}r.fji,c  
while(l SortUtil.swap(data,l,r); Zxd*%v;  
SortUtil.swap(data,l,j); TpwN2 =  
7R7+jL,  
if((l-i)>THRESHOLD){ Be6+YM5Cl  
stack[++top]=i; xkw=os  
stack[++top]=l-1; 6-uLK'E  
} -)B_o#2=2  
if((j-l)>THRESHOLD){ gwsIzYV  
stack[++top]=l+1; x@QNMK.7  
stack[++top]=j; 'e*w8h  
} q*4U2_^.  
A)4XQF  
} f1v4h[)-  
file://new InsertSort().sort(data); UPP"-`t  
insertSort(data); #qmsZHd}b  
} SE43C %hv  
/** "/RMIS K[;  
* @param data JBLUX,  
*/ <&3aP}  
private void insertSort(int[] data) { ez!W0  
int temp; ^H7xFd|>  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Ef?hkq7X<  
} 7)Vbp--b#  
} iF MfBg  
} i\l}M]Z#  
<G|i5/|7  
} i9De+3VqKK  
@&E IH,c  
归并排序: ,Pcg+^A  
[FrLxU  
package org.rut.util.algorithm.support; czU"  
V2`Ud[  
import org.rut.util.algorithm.SortUtil; uDXV@;6<  
Z]R#F0"U  
/** qB,0(I1-!  
* @author treeroot zRD-[Z/-  
* @since 2006-2-2 >$9}"  
* @version 1.0 b}ya9tCl;  
*/ >p@b$po  
public class MergeSort implements SortUtil.Sort{ ?>7-a~*A@  
a*LfT<hmU3  
/* (non-Javadoc) 0+$gR~^^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s2NBYDi$?  
*/ c ?EvrtND  
public void sort(int[] data) { KK3iui  
int[] temp=new int[data.length]; GF8wKx#J  
mergeSort(data,temp,0,data.length-1); __Ksn^I   
} Hnk&2bY  
aA52Li  
private void mergeSort(int[] data,int[] temp,int l,int r){ P_NF;v5 v  
int mid=(l+r)/2; T}=^D=  
if(l==r) return ; OqDP{X:  
mergeSort(data,temp,l,mid); Jy% ?"wn  
mergeSort(data,temp,mid+1,r); OR!W3 @  
for(int i=l;i<=r;i++){ ![_0GFbT  
temp=data; xQDQgvwa  
} HnKgD:  
int i1=l; _fu <`|kc  
int i2=mid+1; bKGX> %-  
for(int cur=l;cur<=r;cur++){ H!Q72tyo  
if(i1==mid+1) ZK'46lh  
data[cur]=temp[i2++]; CX{6  
else if(i2>r) 9$z$yGjl  
data[cur]=temp[i1++]; Vc;[0iB  
else if(temp[i1] data[cur]=temp[i1++]; Tn1V+)  
else }.E^_`  
data[cur]=temp[i2++]; ,0,FzxX0!  
} dH;2OWM  
} AQ@)'  
rvy%8%e?  
} ^7gKs2M  
cPuXy e  
改进后的归并排序: vVw@^7U  
sAqy(oy#M  
package org.rut.util.algorithm.support; T9w=k)  
8$A0q%n  
import org.rut.util.algorithm.SortUtil; ls:oC},p*  
^M6lF5  
/** e 9RYk:O  
* @author treeroot [V:~j1{3  
* @since 2006-2-2 QwWd"Of  
* @version 1.0 p? o[+L<  
*/ +sjzT[ Dn  
public class ImprovedMergeSort implements SortUtil.Sort { l;@+=uVDHm  
6{ ]F#ig=  
private static final int THRESHOLD = 10; 0>7Ij7\[8  
;J,(YNI 1  
/* [UZ r|F  
* (non-Javadoc) rf%lhBv  
* Rh|9F yN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "%Y=+  
*/ c_*w<vJ-'  
public void sort(int[] data) { -'d:~:1f  
int[] temp=new int[data.length]; yiC7)=  
mergeSort(data,temp,0,data.length-1); s. A}ydtt  
} EUuSN| a  
,7Hyrx`  
private void mergeSort(int[] data, int[] temp, int l, int r) { <n]PD;.4  
int i, j, k; v;o1c44;  
int mid = (l + r) / 2; k Alx m{  
if (l == r) }rfikm  
return; "Mj#P9  
if ((mid - l) >= THRESHOLD) Ge-Bk)6  
mergeSort(data, temp, l, mid); !Z:XSF[T  
else ^wd@mWxx  
insertSort(data, l, mid - l + 1); v f{{z%3T  
if ((r - mid) > THRESHOLD) ?PMbbqa0  
mergeSort(data, temp, mid + 1, r); +`k30-<P  
else 3PU_STSix  
insertSort(data, mid + 1, r - mid); /"?DOsJ.  
W<pr Y  
for (i = l; i <= mid; i++) { mW%8`$rVEO  
temp = data; F6[F~^9D  
} uW!XzX['  
for (j = 1; j <= r - mid; j++) { MmjZq  
temp[r - j + 1] = data[j + mid]; lxL.ztL  
} ^%9oeT{  
int a = temp[l]; vnvpb! @Q  
int b = temp[r]; z eT`kZ  
for (i = l, j = r, k = l; k <= r; k++) { fF0i^E<  
if (a < b) { T3z ovnR  
data[k] = temp[i++]; N,Ma\D+^t  
a = temp; ErK1j  
} else { -t|/g5.w_  
data[k] = temp[j--]; 0d_)C>gcF  
b = temp[j]; l5Bm.H_  
} PO"lY'W.U  
} 'l.tV7  
} )dhR&@r*w  
w!20  
/** 49QsT5b)  
* @param data 5;0w({1l  
* @param l B-C$>H^  
* @param i `-pwP  
*/ baII!ks  
private void insertSort(int[] data, int start, int len) { hYkk r&  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); }b(h D|e  
} Th9V8Rg+E  
} W`G bo uxd  
} ?^%[*OCCC!  
} "frZ%mv  
<@ .e.H  
堆排序: gA(npsUHI  
[_)`G*X(N  
package org.rut.util.algorithm.support; 6AAvsu:  
;b0Q%TDh  
import org.rut.util.algorithm.SortUtil; 3s!6rT_=)d  
^~[7])}g6  
/** vzg^tJ  
* @author treeroot Hloe7+5UD  
* @since 2006-2-2 ^}-l["u`  
* @version 1.0 cRnDAn#42  
*/ KNAvLcg  
public class HeapSort implements SortUtil.Sort{ dRron_'  
Jj \ nye+  
/* (non-Javadoc) hUlRtt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CXrOb+  
*/ c6xr[tc%  
public void sort(int[] data) { cpa" ,8  
MaxHeap h=new MaxHeap(); 3k)xzv%r`  
h.init(data); A?lL K&*  
for(int i=0;i h.remove(); dP8qP_77A~  
System.arraycopy(h.queue,1,data,0,data.length); kT@ITA22  
} dA h cA.  
$k\bP9  
private static class MaxHeap{ ..8t1+S6]  
#AGO~#aK  
void init(int[] data){ S!8<|WO^t  
this.queue=new int[data.length+1]; uBbQJvL  
for(int i=0;i queue[++size]=data; .Od:#(aq  
fixUp(size); :b44LXKCP  
} ]%6%rq%9C  
} k={D!4kKz  
5qnei\~  
private int size=0; }gv'r ";  
9!n:hhJM  
private int[] queue; l7VO8p]y[R  
Z?o0Q\ }1  
public int get() { aze#Cn,P}  
return queue[1]; 4@0aN6Os  
} #7 O7O~  
%"H:z  
public void remove() { FFw(`[A_  
SortUtil.swap(queue,1,size--); +yO) 3  
fixDown(1); Wa^Wn +r  
} G!I++M"  
file://fixdown ?_gvI  
private void fixDown(int k) { nnPT08$  
int j; b/UXO$_~-  
while ((j = k << 1) <= size) { 6-wpR  
if (j < size %26amp;%26amp; queue[j] j++; "^$Ht`p[  
if (queue[k]>queue[j]) file://不用交换 yf:0u_&]  
break; u<:uL  
SortUtil.swap(queue,j,k); \7LL neq  
k = j; jv~#'=T'  
} F `:Q  
} bra2xHK@  
private void fixUp(int k) { Sn-#Y(>]o0  
while (k > 1) { )jL@GW  
int j = k >> 1; 0OHXg=  
if (queue[j]>queue[k]) jo"nK,r  
break; $=plAi  
SortUtil.swap(queue,j,k); 5>9Q<*   
k = j; SdlO]y9E  
} O<s7VHj  
} . \a+m  
]x metv|7  
} Ms6 ;iW9  
pA.orx  
} DIGw4g4Kt  
6Mc&=}bV  
SortUtil: k5\V:P=#  
fh =R  
package org.rut.util.algorithm; .$-;`&0cZ  
7RUztu\_  
import org.rut.util.algorithm.support.BubbleSort; Ye On   
import org.rut.util.algorithm.support.HeapSort; J8~hIy6]  
import org.rut.util.algorithm.support.ImprovedMergeSort; hD5@PeLh  
import org.rut.util.algorithm.support.ImprovedQuickSort; Jzf+"%lv  
import org.rut.util.algorithm.support.InsertSort; PJB_"?NTTC  
import org.rut.util.algorithm.support.MergeSort; 1^$hbRq  
import org.rut.util.algorithm.support.QuickSort; LE}`rW3  
import org.rut.util.algorithm.support.SelectionSort; ??nT[bhQ  
import org.rut.util.algorithm.support.ShellSort; _]*[TGap  
Mt4]\pMUb  
/** HCOsVTl,  
* @author treeroot =~O3j:<6  
* @since 2006-2-2 n/;{-  
* @version 1.0 7{U[cG+a#  
*/ 4}N+o+  
public class SortUtil { 15{^waR6  
public final static int INSERT = 1; 3|$?T|#B  
public final static int BUBBLE = 2; Kc]cJ`P4.  
public final static int SELECTION = 3; mdL T7  
public final static int SHELL = 4; ? /!Fv/  
public final static int QUICK = 5; dwB#k$VIOw  
public final static int IMPROVED_QUICK = 6; "#wAGlH6>  
public final static int MERGE = 7; c= 2E/x?  
public final static int IMPROVED_MERGE = 8; {@KLN<  
public final static int HEAP = 9; waC i9  
`{YOl\d_  
public static void sort(int[] data) { ]Qe~|9I  
sort(data, IMPROVED_QUICK); ,'c%S|]U7  
} FiQ&g*=|  
private static String[] name={ <tTNtBb  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ?:vg`m!*  
}; wOL%otEf  
53uptQ{   
private static Sort[] impl=new Sort[]{ T|\sN*}\8J  
new InsertSort(), |u`YT;`!"-  
new BubbleSort(), MDa[bQ NM  
new SelectionSort(), ZOqA8#\  
new ShellSort(), *><j(uz!  
new QuickSort(), 0*:n<T9  
new ImprovedQuickSort(), h(q4 B~  
new MergeSort(), lg-`zV3  
new ImprovedMergeSort(), (1S9+H>g  
new HeapSort() =4q5KI  
}; ; t7F%cDA  
WuVsW3@  
public static String toString(int algorithm){ iU.` TqR7  
return name[algorithm-1]; EM<W+YU  
} u^C\aujg  
K'8o'S_bF  
public static void sort(int[] data, int algorithm) { R5MN;xG^  
impl[algorithm-1].sort(data); Usht\<{  
} hK4ww"-  
=:T"naY(  
public static interface Sort { P `<TO   
public void sort(int[] data); u@Gum|_=N  
} J8FzQ2  
,%m~OB #  
public static void swap(int[] data, int i, int j) { XH0{|#hwN  
int temp = data; miBCq l@x  
data = data[j]; G8F;fG N  
data[j] = temp; e{2Za   
} 0F!Uai1  
} eiOAbO#U  
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