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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。 '2BE"e  
插入排序: iF1E 5{dH  
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package org.rut.util.algorithm.support; 60r4%> d  
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import org.rut.util.algorithm.SortUtil; [$[1|r *Q  
/** ^jxV  
* @author treeroot `(@}O?w!1  
* @since 2006-2-2 u#uT|a.  
* @version 1.0 F1aI4H<(T  
*/ %qj8*1  
public class InsertSort implements SortUtil.Sort{ X=U>r  
g<&n V>wF  
/* (non-Javadoc) -p\uW 0XA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N! N>/9  
*/ G(6MLh1  
public void sort(int[] data) { vPbmQh ex  
int temp; 3 2MdDa  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Fv(1A_~IS  
} mz kv/  
} rp^G k  
} <>tQa5;  
drc]"6 k  
} 7-u['nFJ  
l[D5JnWxt  
冒泡排序: IxQ(g#sj_k  
=A< Fcl\Rz  
package org.rut.util.algorithm.support; 1<ic 5kB  
|JD"iP:  
import org.rut.util.algorithm.SortUtil; 4$^\s5K  
1>"[b8a/  
/** jjLwHJ  
* @author treeroot h &R1"  
* @since 2006-2-2 ,|r%tNh<8$  
* @version 1.0 eAPNF?0yh  
*/ CCQ38P@rv  
public class BubbleSort implements SortUtil.Sort{ a\BV%'Zqg  
fI([vI  
/* (non-Javadoc) ~ & @UH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |)pRkn8x  
*/ @ppT;9<d  
public void sort(int[] data) { ^OWA   
int temp; '!wI8f  
for(int i=0;i for(int j=data.length-1;j>i;j--){ l#;DO9  
if(data[j] SortUtil.swap(data,j,j-1); 2iJ)K rw  
} `$5 QTte  
} :g`j gn 0  
} ][IEzeI_LN  
} )* \N[zm  
CC<(V{Png  
} ZWH9E.uj  
Jiv%Opo/|  
选择排序: #rkz:ir4  
2Vn~o_ga  
package org.rut.util.algorithm.support; +=Q/'g   
>A RZ=x[  
import org.rut.util.algorithm.SortUtil; +Kz baBK  
`,O#r0m  
/** &=-ZNWNo  
* @author treeroot qlJzXq{|`  
* @since 2006-2-2 (WISf}[l;  
* @version 1.0 *49lM;  
*/ [$<\*d/  
public class SelectionSort implements SortUtil.Sort { ..5rW0lr  
(&)PlIi7  
/* e2 X\ll  
* (non-Javadoc) CC8)yO  
* g]V_)}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LW$(;-rY  
*/ T|o ]8z  
public void sort(int[] data) { ;;#_[Zl  
int temp; `pfZJ+  
for (int i = 0; i < data.length; i++) { R;]z/|8  
int lowIndex = i; mz'r<v2Tc  
for (int j = data.length - 1; j > i; j--) { = @EN]u  
if (data[j] < data[lowIndex]) { Ac2,A>  
lowIndex = j; \pVmSac,  
} ,3As Ng  
} ]#fmih^  
SortUtil.swap(data,i,lowIndex); qz@k-Jqq d  
} #BZ2%\  
} ?E*;fDEC  
B,_/'DneQK  
} 1#D&cx6  
M:9 6QM~  
Shell排序: {%"n[DLps  
$q iY)RE  
package org.rut.util.algorithm.support; Q/[g|"  
R'udC}  
import org.rut.util.algorithm.SortUtil; ?m(]@6qa  
PXRkK63  
/** a At<36{?  
* @author treeroot )#H&lH  
* @since 2006-2-2 L^{1dVGWNa  
* @version 1.0 e@ mjh,  
*/ *:+&Sx L  
public class ShellSort implements SortUtil.Sort{ X^td`}F/=V  
djk?;^8  
/* (non-Javadoc) =,])xzG%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T{"[Ih3Mbl  
*/ KqD]GS#(  
public void sort(int[] data) { (T9Q6 \sa  
for(int i=data.length/2;i>2;i/=2){ hT0[O  
for(int j=0;j insertSort(data,j,i); <*/IV<  
} ]+ KN9  
} L*QX21@wC  
insertSort(data,0,1); 5uidi  
} S#{jyU9 ]  
b5@sG^  
/** sYG:\>}ie  
* @param data 2:6W_[7l!  
* @param j <y}9Twdy  
* @param i l 10p'9 n  
*/ J2BCaAwEP,  
private void insertSort(int[] data, int start, int inc) { 2&,jO+BqE@  
int temp; zFba("E Z  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 2I|`j^  
} c;13V(Djy  
} ]VkM)< +  
} dKk#j@[n"  
(^@rr[. o7  
} d:X@zUR*)  
X"k:+  
快速排序: yd|roG/  
Km)VOX[ZZ  
package org.rut.util.algorithm.support;   L* 0$x  
a7fFp 9l!  
import org.rut.util.algorithm.SortUtil; IrMUw$  
44x+2@&1  
/** sc0.!6^'V  
* @author treeroot =.48^$LWx  
* @since 2006-2-2 '-l.2IUyT  
* @version 1.0 q^w@l   
*/ CQANex4&\  
public class QuickSort implements SortUtil.Sort{ }mYxI^n  
7K 'uNPC  
/* (non-Javadoc) zzH^xxg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )z^NJ'v4(  
*/ lZr}F.7  
public void sort(int[] data) { w!eY)p<  
quickSort(data,0,data.length-1); hE;|VSdo  
} cp)BPg  
private void quickSort(int[] data,int i,int j){ */6lyODf  
int pivotIndex=(i+j)/2; TFAd  
file://swap +e87/\5  
SortUtil.swap(data,pivotIndex,j); 4aGVIQ  
$VxKv7:  
int k=partition(data,i-1,j,data[j]); nf0]<x2  
SortUtil.swap(data,k,j); \V_ Tc`  
if((k-i)>1) quickSort(data,i,k-1); hjgB[ &U>  
if((j-k)>1) quickSort(data,k+1,j);  W<@9ndvH  
Ht"?ajW{  
} \:m1{+l  
/** KPrH1 [VU  
* @param data &|K9qa~)Y  
* @param i `6:B0-r  
* @param j qI%X/'  
* @return z}a9%Fb  
*/ fjd)/Gg  
private int partition(int[] data, int l, int r,int pivot) { =G9I7Y@  
do{ rk-GQ#SKU  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); X=KC +1e  
SortUtil.swap(data,l,r); W8_$]}G8E  
} idNra#  
while(l SortUtil.swap(data,l,r); &e6!/y&  
return l; ^?8/9 o  
} vk4Q2P  
/U 3Uuk:  
} q"e]\Tb=we  
$3 =S\jyfK  
改进后的快速排序: nCS" l5  
`*ALb|4ilG  
package org.rut.util.algorithm.support; c[>xM3=e^q  
6Vj=SYK  
import org.rut.util.algorithm.SortUtil; @GWJq 3e  
g.*DlD%%  
/** lv>^P>S(O  
* @author treeroot Miz?t*|{[  
* @since 2006-2-2 ;O7Vl5R  
* @version 1.0 `k6ZAOQtX  
*/ f.Y [2b  
public class ImprovedQuickSort implements SortUtil.Sort { TjE'X2/  
!$hi:3{U ,  
private static int MAX_STACK_SIZE=4096; I<rT\':9  
private static int THRESHOLD=10; r])V6 ^U  
/* (non-Javadoc) +'$5Jtz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SU5O+;{`'  
*/ X`fb\}~R(  
public void sort(int[] data) { pft-.1py  
int[] stack=new int[MAX_STACK_SIZE]; t$e'[;w  
+# 3e<+!F  
int top=-1; FyQr$;r  
int pivot; |->C I  
int pivotIndex,l,r; RcC5_@W  
Yi j^hs@eV  
stack[++top]=0; @h9QfJ_f  
stack[++top]=data.length-1; DF>3)oTF  
L|L;<  
while(top>0){ [DZ|Ltv  
int j=stack[top--]; @'9m()%-]g  
int i=stack[top--]; G}Ko*:fWS  
f_2(`T#  
pivotIndex=(i+j)/2; K3iQ/j~aq  
pivot=data[pivotIndex]; ~1&WR`U  
FeZ*c~q  
SortUtil.swap(data,pivotIndex,j); y_' 6bpb  
!nsx!M  
file://partition _G&gF .|  
l=i-1; jU-aa+  
r=j; %Gl1Qi+Po_  
do{ PIAE6,*  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); nMK$&h,{  
SortUtil.swap(data,l,r); k1.%ZZMM  
} c'>_JlG~  
while(l SortUtil.swap(data,l,r); f`)*bx  
SortUtil.swap(data,l,j); #W&o]FAA3y  
O7CW#F  
if((l-i)>THRESHOLD){ JOz4O  
stack[++top]=i; ?rjB9AC_;t  
stack[++top]=l-1; JW!.+ Q  
} @,j,GE%  
if((j-l)>THRESHOLD){ +n<W#O %  
stack[++top]=l+1; "x vizvR  
stack[++top]=j; U:z5`z!  
} 3RanAT.nu:  
@qpj0i+>*  
} (:I]v_qEYS  
file://new InsertSort().sort(data); Qvty;2$o@  
insertSort(data);  T  5F)  
} %fnG v\uI  
/** <F8e?xy  
* @param data W*Si"s2  
*/ jfiUf1Mj  
private void insertSort(int[] data) { B 6z 'Q  
int temp; JA*+F1s  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0'HQ=pP  
} ah%Ws#&  
} %E5b }E#  
} 16>D?;2o(  
P2@Z7DhQ  
} q^:VF()d_z  
2]<.m]  
归并排序: yVp,)T9  
@dUN3,}  
package org.rut.util.algorithm.support; ?5jLN&A3 G  
Se_]=>WI  
import org.rut.util.algorithm.SortUtil; ;?k<L\zaw  
8ok=&Gq4  
/** g60k R7;\  
* @author treeroot l2kGFgc  
* @since 2006-2-2 DJ DQH\&  
* @version 1.0 h!ogH >S~  
*/ damG*-7Svx  
public class MergeSort implements SortUtil.Sort{ tS>^x  
$_iE^zZaU^  
/* (non-Javadoc) 4&=</ok6`0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JEk'2Htx  
*/  DR{O.TX  
public void sort(int[] data) { 3@qv[yOE  
int[] temp=new int[data.length]; op\$(7<d-  
mergeSort(data,temp,0,data.length-1); FZ?:BX^  
} :EAh%q  
? 3OfiGX?  
private void mergeSort(int[] data,int[] temp,int l,int r){ Xi1|%  
int mid=(l+r)/2; `IEA  
if(l==r) return ; haY]gmC  
mergeSort(data,temp,l,mid); b"Q8[k |d  
mergeSort(data,temp,mid+1,r); Aj|->Y  
for(int i=l;i<=r;i++){ |g.CS$'#Nt  
temp=data;  |iI dm  
} 3C<G8*4);/  
int i1=l; BM/o7%]n  
int i2=mid+1; l=b!O  
for(int cur=l;cur<=r;cur++){ K"x_=^,Yu*  
if(i1==mid+1) [@ev%x,  
data[cur]=temp[i2++]; 8>t,n,k  
else if(i2>r) p_g`f9q6D  
data[cur]=temp[i1++]; b _<n]P*)  
else if(temp[i1] data[cur]=temp[i1++]; 2QRO$NieV  
else uDP:kM  
data[cur]=temp[i2++]; :SS \2  
} ) $_1U!z  
} [gpO?'~  
gHp*QL\?9  
} F3EAjO)ch  
Uns%6o  
改进后的归并排序: :09NZ !!  
jLVG=rOn  
package org.rut.util.algorithm.support; 0F@~[W|2  
a_V\[V{R=  
import org.rut.util.algorithm.SortUtil; _FYA? d}  
Hf@4p'  
/** .whi0~i  
* @author treeroot uE41"?GS  
* @since 2006-2-2 In^mE(8YO  
* @version 1.0 >7PQOQMW'  
*/ H7GI`3o  
public class ImprovedMergeSort implements SortUtil.Sort { [B# XA}w  
9zb1t1[ W  
private static final int THRESHOLD = 10; mmbe.$73  
@t~y9UfF  
/* 7;o:r$08&}  
* (non-Javadoc) mpug#i6q  
* @b,H'WvhfS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E<Zf!!3  
*/ P,ueLG=  
public void sort(int[] data) { 953qz]Q8  
int[] temp=new int[data.length]; vI I{i  
mergeSort(data,temp,0,data.length-1); U8 Zb&6  
} @k&6\1/U  
XZb=;tYo  
private void mergeSort(int[] data, int[] temp, int l, int r) { ["<Xh0_  
int i, j, k; {#qUZ z-  
int mid = (l + r) / 2; dazNwn  
if (l == r) LN WS  
return; "t&=~eOe3  
if ((mid - l) >= THRESHOLD) -0d9,,c  
mergeSort(data, temp, l, mid); eO <N/?t  
else S(Afo`  
insertSort(data, l, mid - l + 1); |E7 J5ha  
if ((r - mid) > THRESHOLD) qC> tni%  
mergeSort(data, temp, mid + 1, r); Vo@7G@7K(  
else U-9Aq  
insertSort(data, mid + 1, r - mid); X|T|iB,vT  
!xfDWbvHV  
for (i = l; i <= mid; i++) { #\w N2`" W  
temp = data; .Qx5,)@9  
} M5ZH6X@5  
for (j = 1; j <= r - mid; j++) { x.*^dM@V  
temp[r - j + 1] = data[j + mid]; Ks P2./N  
} <E4(KE  
int a = temp[l]; Tse#{  
int b = temp[r]; GIM/T4!)  
for (i = l, j = r, k = l; k <= r; k++) { q$:7j5E  
if (a < b) { a#=d{/ ab  
data[k] = temp[i++]; Y7.+ Ma#|  
a = temp; x 4+WZYv3  
} else { |+q_kx@?l  
data[k] = temp[j--]; qU !dg  
b = temp[j]; ^A@f{g$KB+  
} %xlpOR4  
} ] #@:VR  
} %NrH\v{7Q  
?.SGn[  
/** b!]O]dk#  
* @param data (p[#[CI9  
* @param l +d6onO{8  
* @param i v1,#7s AW'  
*/ N.JR($N$  
private void insertSort(int[] data, int start, int len) { ?>h ~"D#  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ChTq!W  
} CW+kKN  
} Iw`tb N L[  
} .D 4G;=Q  
} x"Ky_P~  
8M*+ |  
堆排序: ~a ([e\~  
u2oS Ci  
package org.rut.util.algorithm.support; zWC| Qe  
L;RE5YrH%6  
import org.rut.util.algorithm.SortUtil; lgaSIXDK  
#"N60T@  
/** e P@#I^_  
* @author treeroot [=>=5'-  
* @since 2006-2-2 _ p\L,No  
* @version 1.0 YGo?%.X  
*/  4u:SE   
public class HeapSort implements SortUtil.Sort{ }gkLO TJ/,  
;d6Dm)/(  
/* (non-Javadoc) 8gP1]xD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]3O&8,  
*/ /*qRbN  
public void sort(int[] data) { TmG);B}  
MaxHeap h=new MaxHeap(); 7%Y`j/  
h.init(data); +-j-)WU?,  
for(int i=0;i h.remove(); V'&;r'#O  
System.arraycopy(h.queue,1,data,0,data.length); &>zH.6%$  
} YCbvCw$Ob  
sG`x |%t  
private static class MaxHeap{ X<L=*r^C,=  
>9{?&#]x  
void init(int[] data){ |SkQe[t  
this.queue=new int[data.length+1]; OT 0c5x  
for(int i=0;i queue[++size]=data; I_r@Y:5{  
fixUp(size); Me .I>7c  
} }3{eVct#|  
} m.K cTM%j  
9r?Z'~,Za  
private int size=0; )dkU4]  
VmqJMU>.  
private int[] queue; qdix@ @  
Te-p0x?G.  
public int get() { uyWheR  
return queue[1]; [7vV#s3kJ  
} Uj(0M;#%o+  
62sl6WWS3  
public void remove() { PQ 4mNjXN  
SortUtil.swap(queue,1,size--); RsZj  
fixDown(1); ;ek*2Lh  
} Y :!L  
file://fixdown 2`4m"DtA  
private void fixDown(int k) { FgH7YkKrD  
int j; {XOl &  
while ((j = k << 1) <= size) { i1B!oZ3q  
if (j < size %26amp;%26amp; queue[j] j++; t1?aw<  
if (queue[k]>queue[j]) file://不用交换 Z mJ<h&  
break; n~ *|JJ*`  
SortUtil.swap(queue,j,k); nQiZ6[L  
k = j; ?8-Am[xH  
} ;M3%t=KV  
} ]>X_E%`G<b  
private void fixUp(int k) { _9h$8(wjn  
while (k > 1) { [J,.?'V  
int j = k >> 1; no*)M7  
if (queue[j]>queue[k]) ~&<#H+O  
break; 4CM'I~  
SortUtil.swap(queue,j,k); RCWmdR#}V  
k = j; RNk|h  
} 1{a%V$S[  
} 4qid+ [B  
8%9 C<+.R  
} gA2Wo+\^bq  
T`x|=}  
} c2P}P* _  
JXc.?{LL  
SortUtil: (GC]=  
UY(T>4H+h  
package org.rut.util.algorithm; @"7S$@cO  
bT ,_=7F  
import org.rut.util.algorithm.support.BubbleSort; PT~htG<Fw  
import org.rut.util.algorithm.support.HeapSort; pkn^K+<n,  
import org.rut.util.algorithm.support.ImprovedMergeSort; HA,o2jZ?In  
import org.rut.util.algorithm.support.ImprovedQuickSort; ~XOmxz0  
import org.rut.util.algorithm.support.InsertSort; v #+ECx  
import org.rut.util.algorithm.support.MergeSort; tAv3+  
import org.rut.util.algorithm.support.QuickSort; I\mF dE  
import org.rut.util.algorithm.support.SelectionSort; ,Wlt[T(.;  
import org.rut.util.algorithm.support.ShellSort; /JR+WmO  
5NhFjPETr  
/** j*.;6}\o  
* @author treeroot a}UmD HS-  
* @since 2006-2-2 Jy(G A  
* @version 1.0 ,';|CGI cP  
*/ {+J{t\`  
public class SortUtil { PJ5}c!o[  
public final static int INSERT = 1; 3]*Kz*i  
public final static int BUBBLE = 2; ^FLs_=E  
public final static int SELECTION = 3; tl 0|.Q,  
public final static int SHELL = 4; hE&6;3">  
public final static int QUICK = 5; es)^^kGj6f  
public final static int IMPROVED_QUICK = 6; tkj-.~@g0'  
public final static int MERGE = 7;  >. K  
public final static int IMPROVED_MERGE = 8; >5FTB e[D  
public final static int HEAP = 9; MfL7|b)  
0/GBs~P  
public static void sort(int[] data) {  @lN\.O  
sort(data, IMPROVED_QUICK); \W*L9azr  
} t%}<S~"  
private static String[] name={ R;OPY?EeW  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" e0`z~z]6&  
}; hY&Yp^"}]^  
P(shbi@  
private static Sort[] impl=new Sort[]{ VVeJe"!t  
new InsertSort(), uPfz'|,  
new BubbleSort(), TE Z%|5(]  
new SelectionSort(), F vkyp"W3  
new ShellSort(), S`kOtZ_N n  
new QuickSort(), Pxr/*X  
new ImprovedQuickSort(), >PA*L(Dh%  
new MergeSort(), 3F;C{P!  
new ImprovedMergeSort(), G&*P*f1 S  
new HeapSort() 23?u_?+4i  
}; nm5DNpHk  
*V2;ds.~  
public static String toString(int algorithm){ aj5HtP-  
return name[algorithm-1]; d"FB+$  
} G0 )[(s  
V ?Jy  
public static void sort(int[] data, int algorithm) { $S#Z>d*1!  
impl[algorithm-1].sort(data); 4A2}3$c9  
} \ptO4E  
YmC}q20;  
public static interface Sort { CP7Fe{P  
public void sort(int[] data); 8B G Z  
} <U3X4)r  
@vl$[Z|  
public static void swap(int[] data, int i, int j) { !8G)` '  
int temp = data; &Gt{9#  
data = data[j]; 5&n:i,  
data[j] = temp; uRb48Qy2  
} => (g_\  
}  R0Vt_7  
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