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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。 ZnI15bsDx  
插入排序: =|IlORf<  
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package org.rut.util.algorithm.support; v]F4o1ckk  
t4v'X}7q]  
import org.rut.util.algorithm.SortUtil; Bz-jy.  
/** v=lW5%r,'  
* @author treeroot H~Vf;k>  
* @since 2006-2-2 6V JudNA  
* @version 1.0 MSvZ3[5Io  
*/ s*yl& El/  
public class InsertSort implements SortUtil.Sort{ +#BOWz  
_r\M}lDh*  
/* (non-Javadoc) QNU~G3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Sm4BZF~!B  
*/  ]gcOMC  
public void sort(int[] data) { \2a;z<(  
int temp; 8/dMvAB1So  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); eU%49 A  
} _Wg}#r  
} 4^2>K C_  
} OmBz'sp:  
-NN=(p!<  
} (iir,Ks2C  
b6f OHy  
冒泡排序: I]e+5 E0  
MAFdJ +n#  
package org.rut.util.algorithm.support; ,7)hrA$(  
E;C{i  
import org.rut.util.algorithm.SortUtil; j`RG Moq  
*qO) MpG{  
/** 0,ryy,2  
* @author treeroot =ejU(1 g  
* @since 2006-2-2 T Q4L~8  
* @version 1.0 Ri"hU/H{  
*/ |JYb4J4Ni  
public class BubbleSort implements SortUtil.Sort{ LiT%d  
{P~rf&Ee  
/* (non-Javadoc) d8jH?P-"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -9= DDoO  
*/ ySO\9#Ho  
public void sort(int[] data) { 9c)#j&2?H  
int temp; ;Hk3y+&]a  
for(int i=0;i for(int j=data.length-1;j>i;j--){ (wZ!OLY%}  
if(data[j] SortUtil.swap(data,j,j-1); ? F #&F  
} <YFDS;b|  
} U0j>u*yE  
} NC-K`)  
} _`\!+qGq  
,k4pW&A  
} oxc;DfJ_  
=+j3E<w  
选择排序: ;HXk'xN  
C-c'"FHq  
package org.rut.util.algorithm.support; P1LOj  
j%nN*ms  
import org.rut.util.algorithm.SortUtil; f- 9t  
xWzybuLp  
/** m- <y|3  
* @author treeroot 66eJp-5e8  
* @since 2006-2-2 K}@rte  
* @version 1.0 Pa3-0dUr  
*/ !9/`PcNIpy  
public class SelectionSort implements SortUtil.Sort { Q NMZR  
+8//mrL_/  
/* %`5 (SC].  
* (non-Javadoc) raPOF6-_rH  
* tp cB}HUv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J Ah!#S(  
*/ Zc~7R`v7}  
public void sort(int[] data) { OU,FU@6,7w  
int temp; }bS1M  
for (int i = 0; i < data.length; i++) { d0I s|Gs  
int lowIndex = i; p)/e;q^  
for (int j = data.length - 1; j > i; j--) { ?{f6su@rW  
if (data[j] < data[lowIndex]) { o1(;"5MM  
lowIndex = j; '1b 1N5~  
} jC>ZMy8U)4  
} L4/ns@e  
SortUtil.swap(data,i,lowIndex); n~yKq"^  
} a`w=0]1&*  
} >E J{ *  
a pa&'%7  
} :Pdh##k  
<7J3tn B  
Shell排序: 2w7$"N  
3O$l;|SX  
package org.rut.util.algorithm.support; (t@)`N{  
wz:e\ !  
import org.rut.util.algorithm.SortUtil; u$%C`v>  
:;e OhZ=_  
/** 9S]pC?N]E  
* @author treeroot U U_0@V<  
* @since 2006-2-2 ^vd$j-kjTP  
* @version 1.0 LvG$J*  
*/ % E1r{`p  
public class ShellSort implements SortUtil.Sort{ UDi(7c0.  
]w6 F%d  
/* (non-Javadoc) PkDt-]G.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'W_NRt:  
*/ ]C,j80+pK  
public void sort(int[] data) { %;QK5L   
for(int i=data.length/2;i>2;i/=2){ ,g7O   
for(int j=0;j insertSort(data,j,i); hTLf$_|P  
} yg}O9!MJ  
} z]8Mv(eL  
insertSort(data,0,1); s|<n7 =J  
} ZNw|5u^N  
)m7%cyfC  
/** D|ze0A@  
* @param data o!UB x<4  
* @param j ! I?C8)  
* @param i 2: gh q  
*/ j13- ?fQ&  
private void insertSort(int[] data, int start, int inc) {  mU4(MjP?  
int temp; c.]QIIdK  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); A2ye ^<-C.  
} BGibBF^  
} ck] I?  
} aYa`ex  
As)?~dV  
} F!#)l*OX;  
<<d#  
快速排序: AQjv? 4)T  
R5=J:o  
package org.rut.util.algorithm.support; <T[LugI  
3'.3RKV  
import org.rut.util.algorithm.SortUtil; R&W%E%uj  
s 7 nl  
/** G]aey>)  
* @author treeroot @~hy'6/  
* @since 2006-2-2 9]=J+ (M  
* @version 1.0 Ql5bjlQdO  
*/ o i'iZX  
public class QuickSort implements SortUtil.Sort{ 1r> ]XhRFZ  
~fkcal1@  
/* (non-Javadoc) q#AEu xI1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h<&GdK2U+  
*/ 4Px|:7~wT8  
public void sort(int[] data) { )Q`Ycz-  
quickSort(data,0,data.length-1); =a,qRO  
} N:U}b1$L6  
private void quickSort(int[] data,int i,int j){ s&nat4{B  
int pivotIndex=(i+j)/2; yGtTD9j  
file://swap FA-cTF[,(  
SortUtil.swap(data,pivotIndex,j); t jThQ  
V6dq8Z"h  
int k=partition(data,i-1,j,data[j]); Fj<*!J$,  
SortUtil.swap(data,k,j); l3b=8yn.  
if((k-i)>1) quickSort(data,i,k-1); kNWTM%u9  
if((j-k)>1) quickSort(data,k+1,j); bxh-#x &  
Rf4K Rhi  
} IWv5UmjN  
/** ((]i}s0S  
* @param data ^9,^ BHlC0  
* @param i 7 w,D2T  
* @param j 26aDPTP$<  
* @return YNV, dKB  
*/ &'^.>TJ\  
private int partition(int[] data, int l, int r,int pivot) { k vZw4Pk  
do{ >U* p[FGW  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 5;KJ0N*-  
SortUtil.swap(data,l,r); vai w*?jV  
} NL:-3W7vf  
while(l SortUtil.swap(data,l,r); e4=FO;%  
return l; xDw~n(*  
} m BvO<?ec  
/Yi4j,8!|  
} |1CX?8)b=  
n yPeN?-  
改进后的快速排序: rVP\F{Q4Tr  
0e0)1;t\  
package org.rut.util.algorithm.support; jA9uB.I,"b  
AcuZ? LYzK  
import org.rut.util.algorithm.SortUtil; ,(q] $eOZ  
cy@R i#  
/** u_NLgM7*  
* @author treeroot R4 eu,,J  
* @since 2006-2-2 U:8] G  
* @version 1.0 e bp t/q[  
*/ oQ -m  
public class ImprovedQuickSort implements SortUtil.Sort {  I\_2=mL  
$i+@vbU6  
private static int MAX_STACK_SIZE=4096;  b}NNkM  
private static int THRESHOLD=10; NUVKAAgMX  
/* (non-Javadoc) $)NS]wJ]3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O0jOI3/P%  
*/  mhrF9&s  
public void sort(int[] data) { 0'6ai=W  
int[] stack=new int[MAX_STACK_SIZE]; v@QnS  
9NwUX h(:(  
int top=-1; &G_#=t&  
int pivot; o#6QwbU25  
int pivotIndex,l,r; LTS{[(%  
&Cb,C+q  
stack[++top]=0; &1<[@:;  
stack[++top]=data.length-1; {E%c%zzQ  
I H=$ w c  
while(top>0){ kP$ E+L  
int j=stack[top--]; ',g%L_8Sq  
int i=stack[top--]; !`N:.+DT  
pnSKIn  
pivotIndex=(i+j)/2; z4_B/Q  
pivot=data[pivotIndex]; 36{OE!,i  
S|| W  
SortUtil.swap(data,pivotIndex,j); EGgw#JAi#t  
D)x^?!  
file://partition ^k7I+A  
l=i-1; @4UX~=:686  
r=j; hK)'dG*  
do{ 3}s]F/e  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); L }{3_/t  
SortUtil.swap(data,l,r); "{vWdY|"  
} octQ[QXo#  
while(l SortUtil.swap(data,l,r); 7~+Fec`Ut*  
SortUtil.swap(data,l,j); .F$}a%  
U9T}iI  
if((l-i)>THRESHOLD){ ByP<-Deh  
stack[++top]=i; !0hyp |F:>  
stack[++top]=l-1; \E,2VM@6  
} [ x+ -N7  
if((j-l)>THRESHOLD){ y'`7zJ  
stack[++top]=l+1; }*rSg .  
stack[++top]=j; ]wDqdD y7S  
} &4evh<z  
>3D1:0Sg  
} Vx.c`/  
file://new InsertSort().sort(data); I)1ih  
insertSort(data);  Mj1f;$  
} 7xO05)bz  
/** _+ 9i  
* @param data PEEaNOk 1b  
*/ A z@@0  
private void insertSort(int[] data) { :|kO}NGM  
int temp; ]QR]#[Tn'  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); QAx9W%  
} vdn)+fZ;   
} hd'fWFW N  
} >}F$6KM  
sXEIC#rq  
} &)6}.$`  
2?%4|@*H?  
归并排序:  m-4#s  
'lE{Nj*7  
package org.rut.util.algorithm.support; ,N:^4A  
,w6?Ap  
import org.rut.util.algorithm.SortUtil; 4|&/# Cz^Y  
C zw]5  
/** :'%|LBc0  
* @author treeroot ;6R9k]5P%  
* @since 2006-2-2 kJ"rRsK  
* @version 1.0 ;taZixOH  
*/ XdThl  
public class MergeSort implements SortUtil.Sort{ 7#+Ih-&EQ  
]tu OWR  
/* (non-Javadoc) M887 Q'HSi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k-3;3Mq  
*/ Q8Ek}O\MC  
public void sort(int[] data) { 5@1h^w v  
int[] temp=new int[data.length]; O,),0zcYF  
mergeSort(data,temp,0,data.length-1); MOB4t|  
} Zs/-/C|  
6_" n  
private void mergeSort(int[] data,int[] temp,int l,int r){ \?v&JmEU  
int mid=(l+r)/2; qspGNu  
if(l==r) return ; p/_W*0/i  
mergeSort(data,temp,l,mid); A@|Z^T:  
mergeSort(data,temp,mid+1,r); gYN;F u-9Z  
for(int i=l;i<=r;i++){ XM!oN^  
temp=data; "Cxj_V@\  
} 16eP7s  
int i1=l; [dLc+h1{B  
int i2=mid+1; `:Wyw<^  
for(int cur=l;cur<=r;cur++){ cd,'37pZ  
if(i1==mid+1) ESoqmCJjb:  
data[cur]=temp[i2++]; "JmbYb#Z  
else if(i2>r) yxx_%9X  
data[cur]=temp[i1++]; 4w%hvJ  
else if(temp[i1] data[cur]=temp[i1++]; z)KoK`\mE"  
else h(nE)j  
data[cur]=temp[i2++]; s[{8:Px  
} XOqHzft h6  
}  dEXhn  
A4l"^dZc  
} gmu.8  
b/*QV0(  
改进后的归并排序: .T8^>z1/\F  
,B;mG]_  
package org.rut.util.algorithm.support; `2U,#nZ 4  
V9< E `C  
import org.rut.util.algorithm.SortUtil; chD7 ^&5]  
fXnTqKAfu6  
/** _Q^jk0K8ga  
* @author treeroot z|AknEE,  
* @since 2006-2-2 &/uakkS  
* @version 1.0 U[;ECw@  
*/ exSwx-zxI  
public class ImprovedMergeSort implements SortUtil.Sort { TuCHD~rb  
jS3@Z?x?*  
private static final int THRESHOLD = 10; o/ \o -kC}  
`::j\3B&Y-  
/* Us "G X_  
* (non-Javadoc) #q34>}O< O  
* 6 T~+vT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1*9Yy~w  
*/ (AA@ sN  
public void sort(int[] data) { xF) .S@  
int[] temp=new int[data.length]; .Sw4{m[g  
mergeSort(data,temp,0,data.length-1); </<z7V,{  
} p({|=+bl  
`,pBOh|'  
private void mergeSort(int[] data, int[] temp, int l, int r) { fU.hb%m)Q\  
int i, j, k; P/~dY  
int mid = (l + r) / 2; 5r8 [ "  
if (l == r) G2[2y-Rv  
return; 4ybOK~z  
if ((mid - l) >= THRESHOLD) HSG9|}$  
mergeSort(data, temp, l, mid); $(J)F-DB i  
else wAR:GO'n  
insertSort(data, l, mid - l + 1); .w m<l:  
if ((r - mid) > THRESHOLD) ZPM7R3%V)z  
mergeSort(data, temp, mid + 1, r); T06w`'aL  
else <5]_u:  
insertSort(data, mid + 1, r - mid); 4mBM5Tv  
UlN}SddI9  
for (i = l; i <= mid; i++) { /Y\q&}  
temp = data; -{eiV0<^  
} 7je1vNs  
for (j = 1; j <= r - mid; j++) { T;3~teVYB  
temp[r - j + 1] = data[j + mid]; c?xeBC1-  
} vA*NJ%&`  
int a = temp[l]; ZQz;EV!  
int b = temp[r]; {XhpxJ__  
for (i = l, j = r, k = l; k <= r; k++) { !5m~qet.  
if (a < b) { h*P0;V`UX  
data[k] = temp[i++]; +f]I7e:qp  
a = temp; ?\Y7]_]/  
} else { 0x'Fi2=`  
data[k] = temp[j--]; V/OW=WCzN  
b = temp[j]; R'K /\   
} ~c1~) QzZ  
} u_WW uo  
}  ;XYfw)  
3kJSz-_M  
/** T^ xp2cZ  
* @param data H'EBe;ccM  
* @param l =8r,-3lC;  
* @param i 5hCfi  
*/ mn<ea&  
private void insertSort(int[] data, int start, int len) { *LmzGF|  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); U_B`SS  
} T?__  
} ~;I{d7z,;  
} mOjl0n[To]  
} i3Nt?FSN  
AQ.q?'vE)  
堆排序: 0XIrEwm@%  
gAi}"} ;  
package org.rut.util.algorithm.support; r:^`005  
hW c M.  
import org.rut.util.algorithm.SortUtil; NX+ eig</-  
;rF:$37^  
/** gY=+G6;=<  
* @author treeroot 6d 8n1_  
* @since 2006-2-2 N) z] F9Kg  
* @version 1.0  93 `  
*/ QPF[D7\  
public class HeapSort implements SortUtil.Sort{ oU 8o;zk0  
Ox/va]e7"  
/* (non-Javadoc) K&Q0]r?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v:j4#pEWD  
*/ P|)SXR  
public void sort(int[] data) { C$B?|oUJc  
MaxHeap h=new MaxHeap(); ;#"`]khd  
h.init(data); Xg"Mjmr  
for(int i=0;i h.remove(); LyXABQ]  
System.arraycopy(h.queue,1,data,0,data.length); 1hp@.Fv  
} @1[LD[<  
WHF:> 0B  
private static class MaxHeap{ aR;Q^YJ+a  
r?2C%GI`  
void init(int[] data){ X4*/h$48 w  
this.queue=new int[data.length+1]; C[$<7Mi|;  
for(int i=0;i queue[++size]=data; l}c<eEfOy"  
fixUp(size); `wG&Cy]v  
} %n c+VL4  
} c Ky%0oTla  
N=L urXv  
private int size=0; 7~`6~qg.  
ae1fCw3k  
private int[] queue; ]R]X#jm  
9p$q@Bc  
public int get() { `^N;%[c`z  
return queue[1]; .g&BA15<F6  
} E3KPJ`=!*"  
,9M \`6  
public void remove() { N4 mQN90t  
SortUtil.swap(queue,1,size--); aH$*Ue@Q  
fixDown(1); DwTZ<H4  
} p-/x Md  
file://fixdown pV-.r-P  
private void fixDown(int k) { q C|re!K  
int j; aA yFu_  
while ((j = k << 1) <= size) { d ly 08 74  
if (j < size %26amp;%26amp; queue[j] j++; &k{@:z  
if (queue[k]>queue[j]) file://不用交换 AU$5"kBE  
break; %I=J8$B]f  
SortUtil.swap(queue,j,k); Y2D) $  
k = j; {5z?5i ?D  
} 9hp0wi@W}  
} pcl _$2_  
private void fixUp(int k) { YGn:_9  
while (k > 1) { 02S(9^=  
int j = k >> 1; 2Uk8{d  
if (queue[j]>queue[k]) <*5D0q#~"  
break; 3 \WdA$Wx  
SortUtil.swap(queue,j,k); >) :d38M  
k = j; WK^qYfq|  
} 1!NaOfP;@  
} dX3> j{_  
%E!0,y,:  
} fu&]t8MJC  
5Np.&  
} XZT( :(  
Wl2>U(lj  
SortUtil: [E/3&3  
Mo<p+*8u:  
package org.rut.util.algorithm; %`\{Nx k  
nz&JG~Qfm  
import org.rut.util.algorithm.support.BubbleSort; J/*[wj  
import org.rut.util.algorithm.support.HeapSort; e O}mZN  
import org.rut.util.algorithm.support.ImprovedMergeSort; &\K#UVDyhh  
import org.rut.util.algorithm.support.ImprovedQuickSort; Bms?`7}N  
import org.rut.util.algorithm.support.InsertSort; ,?f(~<Aj  
import org.rut.util.algorithm.support.MergeSort; sR0nY8@F  
import org.rut.util.algorithm.support.QuickSort; zj)[Sn tn?  
import org.rut.util.algorithm.support.SelectionSort; DpR%s",Q  
import org.rut.util.algorithm.support.ShellSort; i! nl%%  
%?$"oWmenS  
/** eK@Y] !lz  
* @author treeroot p5'\< gQ  
* @since 2006-2-2 u60l-  
* @version 1.0 %~[F^  
*/ #WG(V%f]  
public class SortUtil { OWkK]O  
public final static int INSERT = 1; {gn[ &\  
public final static int BUBBLE = 2; jHZ<G c  
public final static int SELECTION = 3; @'y"D  
public final static int SHELL = 4; $7*Ml)H!9  
public final static int QUICK = 5; m1hf[cg  
public final static int IMPROVED_QUICK = 6; +Snjb0  
public final static int MERGE = 7; :4Vt  
public final static int IMPROVED_MERGE = 8; g<-cHF  
public final static int HEAP = 9; }A;Xd/,'r  
33 4*nQ  
public static void sort(int[] data) { 'mM5l*{  
sort(data, IMPROVED_QUICK); !1_:nD  
} ~}116K  
private static String[] name={ .PxM #;i2  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" _ Owz%  
}; nNKL{Hp  
3^a"$VW1  
private static Sort[] impl=new Sort[]{ L$Q+R'  
new InsertSort(), 1&<@(S<  
new BubbleSort(), VQ; =-95P  
new SelectionSort(), Xz@>sY>Jc  
new ShellSort(), "8I4]'  
new QuickSort(), T_dd7Ym'8  
new ImprovedQuickSort(), 8K/lpqw  
new MergeSort(), D. e*IP1R  
new ImprovedMergeSort(), {m?x},  
new HeapSort() $} Myj'`r  
}; |+bG~~~%j  
3PGyqt(   
public static String toString(int algorithm){ (!(bysi9  
return name[algorithm-1]; F*=RP$sj  
} B+LNDnjO]  
V_kE"W)  
public static void sort(int[] data, int algorithm) { sFTIRVXN,  
impl[algorithm-1].sort(data); jj2UUQ|  
} 4Ojw&ys@V  
U{Z>y?V/  
public static interface Sort { \v_C7R;&  
public void sort(int[] data); ,d+mT^jN  
} 2vC=.1k  
2 *$n?  
public static void swap(int[] data, int i, int j) { K&h6#[^\d  
int temp = data; ihVQ,Cth  
data = data[j]; = !X4j3Cv  
data[j] = temp; ZIp=JR8o$  
} EUkNh>U?  
} =)8Ct  
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