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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。 2JhE`EVH  
插入排序: ~Fe$/*v  
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package org.rut.util.algorithm.support; {y%|Io`P  
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import org.rut.util.algorithm.SortUtil; !jTxMf  
/** h}U>K4BJ  
* @author treeroot Wt M1nnJp  
* @since 2006-2-2 hh[@q*C  
* @version 1.0 @kPe/j/[1  
*/ 1\X_B`xwD  
public class InsertSort implements SortUtil.Sort{ . #FJM2Xk  
Y2TXWl,Jk  
/* (non-Javadoc) m S4N%Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /8? u2 q  
*/ lD#S:HX  
public void sort(int[] data) { g7;OZ#\  
int temp; XOoz.GSQ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Djr/!j  
} ,Dy9-o  
} 6pdek3pOCt  
} 20 Z/Y\  
i*)BFV_-  
} 0F%/R^mw  
[9;[g~;E%m  
冒泡排序: =.]{OT  
-y'tz,En.  
package org.rut.util.algorithm.support; w+Y_TJ%  
'!"rE1e  
import org.rut.util.algorithm.SortUtil; 2w;Cw~<=d  
H1d2WNr[  
/** *AG01# ZF  
* @author treeroot [85b+SKW  
* @since 2006-2-2 C({r1l4[D  
* @version 1.0 lyzM?lK-  
*/ .3CQFbHF  
public class BubbleSort implements SortUtil.Sort{ `$Y%c1;  
<64#J9T^  
/* (non-Javadoc) _&RGhA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O& 1z-  
*/ w&>*4=^a  
public void sort(int[] data) { j 6dlAe  
int temp; r@c!M|m@  
for(int i=0;i for(int j=data.length-1;j>i;j--){ +TC##}Zmb  
if(data[j] SortUtil.swap(data,j,j-1); Rjn%<R2nW  
} #('GGzL6c  
} tI<6TE'!p#  
} e8 c.&j3m  
} bH g 0,N  
%F87"v~  
} 2i$_ ,[fi  
ZfibHivz  
选择排序: pN{XGkX.  
]$!7;P  
package org.rut.util.algorithm.support; w :9M6+mM^  
ge]Z5E(1  
import org.rut.util.algorithm.SortUtil; )Vo%}g?6!  
6Z5$cR_vC7  
/** TMD*-wYr  
* @author treeroot uBw[|,yn2*  
* @since 2006-2-2 RREl($$p  
* @version 1.0 zbJ}@V  
*/ ]Na;b  
public class SelectionSort implements SortUtil.Sort { cv_t2m  
: cPV08i  
/* W/.n R[!  
* (non-Javadoc) I2gSgv%  
* ma6Wr !J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  ]l}bk]  
*/ wlDo(]mj=O  
public void sort(int[] data) { |fY#2\)Yx  
int temp; P6)d#M  
for (int i = 0; i < data.length; i++) { XEUS)X)  
int lowIndex = i; qga\icQr  
for (int j = data.length - 1; j > i; j--) { rAk;8)O$  
if (data[j] < data[lowIndex]) { ~i0>[S3 '  
lowIndex = j; O&Y22mu  
} gZ us}U  
} ir5eR}H  
SortUtil.swap(data,i,lowIndex); ]/|DCxQ  
} #!>`$  
} 0x # V   
{KSy I#  
} 1ZXRH;J40  
X=? \A{Y  
Shell排序: | Pqs)Mb]  
:4)lmIu  
package org.rut.util.algorithm.support; L i+|%a  
i "aQm  
import org.rut.util.algorithm.SortUtil; .uB[zJc  
o\qeX|.70  
/** 0R;`)V\^  
* @author treeroot _8 l=65GW  
* @since 2006-2-2 Q6n8,2*  
* @version 1.0 ~ujg250.L  
*/ [6?x 6_M  
public class ShellSort implements SortUtil.Sort{ EcPvE=^c  
X*a7`aL  
/* (non-Javadoc) $#_^uWN-M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iZ0.rcQj'o  
*/ 0 ke1KKy/d  
public void sort(int[] data) { O]l-4X#8F  
for(int i=data.length/2;i>2;i/=2){ qnzNJ_ `R  
for(int j=0;j insertSort(data,j,i); Q'[~$~&`  
} ?sxf_0*  
} w$`u_P|@E:  
insertSort(data,0,1); I.o3Old  
} &-x/c\jz  
n.A*(@noe  
/** xOZvQ\%  
* @param data xM>dv5<E  
* @param j _he~Y2zFz  
* @param i xEB 4oQ5  
*/  aqwW`\  
private void insertSort(int[] data, int start, int inc) { USXPa[  
int temp; BT(G9 Pj;  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); hP/uS%X   
}  <JZa  
} yCv"(fNQ  
} .yb8<qs  
s%?<:9  
} V{{UsEVO  
WX+@<y}%  
快速排序: t5QGXj  
FYK}AR<=  
package org.rut.util.algorithm.support; ve4 QS P  
*T{KpiuP  
import org.rut.util.algorithm.SortUtil; Ds\f?\Em  
aX~' gq>  
/** efh1-3f  
* @author treeroot %Jn5M(myC  
* @since 2006-2-2 d_98%U+u  
* @version 1.0 5hB2:$C  
*/ DE?@8k  
public class QuickSort implements SortUtil.Sort{ =OR&,xt  
x_EU.924uY  
/* (non-Javadoc) &0mhO+g   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l`];CALA4  
*/ !p)cP"fa  
public void sort(int[] data) { Fh)YNW@  
quickSort(data,0,data.length-1); ,7e 2M@=  
} 'eoI~*}3WQ  
private void quickSort(int[] data,int i,int j){ Y C}$O2  
int pivotIndex=(i+j)/2; RHq r-%  
file://swap @T-}\AU  
SortUtil.swap(data,pivotIndex,j); ^N~Jm&I  
:wJ!rn,4  
int k=partition(data,i-1,j,data[j]); m>b i$Y  
SortUtil.swap(data,k,j); W*D*\E  
if((k-i)>1) quickSort(data,i,k-1); .sUL5`  
if((j-k)>1) quickSort(data,k+1,j); =k+i5:@]  
H{;8i7%  
} a[gN+DX%L  
/** |nO }YU\E  
* @param data qxD<mZ@-R0  
* @param i wSs78c=  
* @param j ;<`  
* @return z yI4E\  
*/ x[%% )[d  
private int partition(int[] data, int l, int r,int pivot) { =`%%*  
do{ {XYf"ONi  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); &S# bLE  
SortUtil.swap(data,l,r); ~ K|o@LK  
} %P]-wBJw  
while(l SortUtil.swap(data,l,r); UmQ'=@^kR  
return l; ZP%Bu2xd  
} WTh|7&  
?/s=E+  
} q}5&B =2pM  
PiIILX{DuH  
改进后的快速排序: /XW,H0pR  
2qkC{klC^M  
package org.rut.util.algorithm.support; 4U:+iumy2  
>l5JwwG  
import org.rut.util.algorithm.SortUtil; z~a]dMs"(P  
mH3{<^Z6  
/** >JhIRf  
* @author treeroot GgjBLe=C  
* @since 2006-2-2 6d/b*,4[  
* @version 1.0 VAR/"  
*/ 6UJBE<ntj  
public class ImprovedQuickSort implements SortUtil.Sort { 4HDQj]z/  
FdJC@Y-#uA  
private static int MAX_STACK_SIZE=4096; ?|Mmz@  
private static int THRESHOLD=10; k4 %> F  
/* (non-Javadoc) L:EJ+bNG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RwwX;I"o%  
*/ :Zd# }P  
public void sort(int[] data) { wwmODw<tT  
int[] stack=new int[MAX_STACK_SIZE]; 1vxh3KS.  
(.3L'+F  
int top=-1; sw &sF  
int pivot; R:JS)>B  
int pivotIndex,l,r; #$%gs]  
9/|i. 2&  
stack[++top]=0; Afa{f}st  
stack[++top]=data.length-1; JXnPKAN  
c5rQkDW  
while(top>0){ PZl(S}VY  
int j=stack[top--]; =U".L  
int i=stack[top--]; u]c nbm  
UoxF00H@!  
pivotIndex=(i+j)/2; )u&_}6z  
pivot=data[pivotIndex]; y]\R0lR  
i&FC-{|Z  
SortUtil.swap(data,pivotIndex,j); QX~*aqS3s8  
Ic&t_B*i}]  
file://partition _>:g&pS/  
l=i-1; tdr*>WL  
r=j; 4/ U]7Y  
do{ _.06^5o  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 49Ue2=PP#  
SortUtil.swap(data,l,r); 7\U1K^q  
} /ADxHw`k  
while(l SortUtil.swap(data,l,r); IJXH_H_%*  
SortUtil.swap(data,l,j); LDvF)Eg  
TJ5{Ee GV  
if((l-i)>THRESHOLD){ A?|cJ"N  
stack[++top]=i; k*c:%vC!  
stack[++top]=l-1; [I4FU7mpH  
} @4B2O"z`  
if((j-l)>THRESHOLD){ U w`LWG3T  
stack[++top]=l+1; L{fP_DIa  
stack[++top]=j; UmgLH Cz  
} e?lqs,m@"  
<p0$Q!^dK=  
} *Ucyxpu~$  
file://new InsertSort().sort(data); ::T<de7  
insertSort(data); :g9z^ $g  
} JkxS1  
/** '\*Rw]bR|  
* @param data r rwsj`  
*/ FVQWz[N  
private void insertSort(int[] data) { %#QFu/l  
int temp; mQs'2Y6Oa  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); JcVq%~ {M  
} A#  M  
} q=1SP@;\6  
} MthThsr7  
kyo ,yD  
} V!U[N.&$  
Yg]f2ke  
归并排序: t2Y~MyT/  
|b3/63Ri-0  
package org.rut.util.algorithm.support; ycAQPz}=I  
'qd")  
import org.rut.util.algorithm.SortUtil; l*:p==  
I3 x}F$^  
/** +li^0+3-'  
* @author treeroot GyPN)!X@.&  
* @since 2006-2-2 :A{-^qd(  
* @version 1.0 !yI)3;$*  
*/ gwYd4  
public class MergeSort implements SortUtil.Sort{ ^ KjqS\<  
X*yl% V  
/* (non-Javadoc) z0W+4meoH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $WPN.,7  
*/ YWZF*,4  
public void sort(int[] data) { hB+ t pa  
int[] temp=new int[data.length]; |}|;OG  
mergeSort(data,temp,0,data.length-1); 9,c>H6R7  
} kv4J@  
)nk>*oE  
private void mergeSort(int[] data,int[] temp,int l,int r){ NR[mzJv  
int mid=(l+r)/2; n|*V 8VaL  
if(l==r) return ; DJW1kR  
mergeSort(data,temp,l,mid); I.<#t(io  
mergeSort(data,temp,mid+1,r); 5y'Yosy:  
for(int i=l;i<=r;i++){ -oo=IUk  
temp=data; o_N02l4J)  
} Ji[w; [qL  
int i1=l; g:clSN,  
int i2=mid+1; '~cEdGD9H  
for(int cur=l;cur<=r;cur++){ V V4_  
if(i1==mid+1) >lW*%{|b$^  
data[cur]=temp[i2++]; ZF/KV\Ag)  
else if(i2>r) .eAC!R  
data[cur]=temp[i1++]; I(CI')Q  
else if(temp[i1] data[cur]=temp[i1++]; fytx({I .a  
else e](=)h|  
data[cur]=temp[i2++]; NE4fQi?3  
} W*m[t&;  
} tVcs r  
o|W? a#_\  
} ZD{srEa/a  
w8i!Qi#y5D  
改进后的归并排序: wm8x1+P  
"J1ar.li  
package org.rut.util.algorithm.support; Vel;t<1  
ZkJM?Fzq  
import org.rut.util.algorithm.SortUtil; IXN4?=)I  
M5V1j(URE  
/** | <*(`\ 'w  
* @author treeroot !%X`c94  
* @since 2006-2-2 D+3Y.r 9  
* @version 1.0 aVYUk7_<  
*/ "p{ '984r<  
public class ImprovedMergeSort implements SortUtil.Sort { ;Z_C3/b  
a=FRJQ8S  
private static final int THRESHOLD = 10; @^%_ir(  
v^pP& <G  
/* kI'A` /B l  
* (non-Javadoc) `[\phv  
* ^-!HbbVv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "/fs%F  
*/ h;KK6*Z*$E  
public void sort(int[] data) { S\ZAcz4  
int[] temp=new int[data.length]; >nDnb4 'C  
mergeSort(data,temp,0,data.length-1); ,]mwk~HeF  
} =R.9"7~2x  
Fc~w`~tv  
private void mergeSort(int[] data, int[] temp, int l, int r) { H=#Jg;_w  
int i, j, k; 1znV>PO!  
int mid = (l + r) / 2; /8>/"Z2S  
if (l == r)  ^gyp- !  
return; [BBKj)IK  
if ((mid - l) >= THRESHOLD) F/SsiUBS  
mergeSort(data, temp, l, mid); e;5Lv9?C8  
else rk|(BA  
insertSort(data, l, mid - l + 1); %6'D!H?d  
if ((r - mid) > THRESHOLD) )1}g7:  
mergeSort(data, temp, mid + 1, r); J#DcT@  
else HJR<d&l;p  
insertSort(data, mid + 1, r - mid); zYdtQjv  
bl?%:qb.V  
for (i = l; i <= mid; i++) { )^Pvm  
temp = data; }YP7x|  
} L"I] mQvd  
for (j = 1; j <= r - mid; j++) { ?ljod6  
temp[r - j + 1] = data[j + mid]; Z D%_PgiT  
} _%vqBr*  
int a = temp[l]; +[ /r^C  
int b = temp[r]; NCFV  
for (i = l, j = r, k = l; k <= r; k++) { >}{-!  
if (a < b) { Td1ba^J  
data[k] = temp[i++]; *v ^"4  
a = temp; Sp,Q,Q4  
} else { %i>e  
data[k] = temp[j--]; |S:!+[  
b = temp[j]; xPup?oP >  
} !<zzP LC  
} FraW6T}_  
} d$rUxqB.  
o}+Uy  
/** 78CJ  
* @param data |u r~s$8y-  
* @param l YB~t|m65  
* @param i j(C UYm  
*/ KR(} A"  
private void insertSort(int[] data, int start, int len) { !muYn-4M  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); >Ryss@o  
} {IHK<aW  
} aSkx#mV  
} cC^C7AAq^  
} qd~98FS  
YG~ o  
堆排序: UX`DZb +^  
#6s C&w3  
package org.rut.util.algorithm.support; *P R_Y=v%  
.l=*R7~EU  
import org.rut.util.algorithm.SortUtil; OsL%SKs|  
Vnj/>e3  
/** *X l<aNNx  
* @author treeroot }FiN 7#  
* @since 2006-2-2 ,i?!3oLT  
* @version 1.0 hdtnC29$  
*/ \41)0,sEy  
public class HeapSort implements SortUtil.Sort{ 1DLG]-j}  
K6{bYho  
/* (non-Javadoc) 4ylDD|) rO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  AY'?Xt  
*/ ,&&M|,NQ&s  
public void sort(int[] data) { ob0 8xGj  
MaxHeap h=new MaxHeap(); PT#eXS9_  
h.init(data); $l,Zd6<1q  
for(int i=0;i h.remove(); CQzjCRS d  
System.arraycopy(h.queue,1,data,0,data.length); Lv5X 'yM  
} <cv2-?L{  
'gZbNg=&[  
private static class MaxHeap{ M2E87w  
vk)0n=  
void init(int[] data){ 0 \Yx.\X,  
this.queue=new int[data.length+1]; ,0uo&/Y4L  
for(int i=0;i queue[++size]=data; [AX"ne# M*  
fixUp(size); aaz"`,7_  
} +'['HQ)  
} |@ZqwC=  
2PR7M.V 7  
private int size=0; 6{+_T  
Wda\a.bXT  
private int[] queue; P"9@8aLB  
vDW&pF_eI>  
public int get() { 4l ZJb  
return queue[1]; )'!ml  
} ,t%CK!8  
?S@R~y0K  
public void remove() { }-{b$6]  
SortUtil.swap(queue,1,size--); `[@^m5?b-  
fixDown(1); 2rO)qjiH  
} M*O(+EM  
file://fixdown &#-|Yh/  
private void fixDown(int k) { +t>*l>[  
int j; UOu6LD/|h  
while ((j = k << 1) <= size) { 6c2ThtL  
if (j < size %26amp;%26amp; queue[j] j++; n4WSV  
if (queue[k]>queue[j]) file://不用交换 YO(:32S  
break; p584)"[*t  
SortUtil.swap(queue,j,k); P#[IUXtT  
k = j; 4Hml.|$  
} OgKWgvy  
} <+\k&W&Y|y  
private void fixUp(int k) { ~TG39*m  
while (k > 1) { a*6wSAA )  
int j = k >> 1; R5K-KSvW  
if (queue[j]>queue[k]) u%=bHg  
break; niYz9YX  
SortUtil.swap(queue,j,k); jy!f{dsC  
k = j; gp$EXJ=  
} W1?!iE~tO  
} 2 {mY:\  
|I}A> XG  
} Kd/[ Bs%  
Ehb?CnV#J  
} T/wM(pr'   
Mu'^OX82  
SortUtil: +MNSZLP]  
P?q G  
package org.rut.util.algorithm; V;iL[  
JlC<MQ?  
import org.rut.util.algorithm.support.BubbleSort; .'5'0lR5  
import org.rut.util.algorithm.support.HeapSort; 8Wdkztp/S  
import org.rut.util.algorithm.support.ImprovedMergeSort; Ii~; d3.  
import org.rut.util.algorithm.support.ImprovedQuickSort; 0{0;1.ZP  
import org.rut.util.algorithm.support.InsertSort; PyC;f8n'(  
import org.rut.util.algorithm.support.MergeSort; ;48P vw>g}  
import org.rut.util.algorithm.support.QuickSort; h4Xc Kv+  
import org.rut.util.algorithm.support.SelectionSort; WYwzo V-  
import org.rut.util.algorithm.support.ShellSort; _x\-!&[p  
+R "AA_A?  
/** *CeQY M  
* @author treeroot ;Ze"<U  
* @since 2006-2-2 5jn$7iE`  
* @version 1.0 ,VKQRmd  
*/ 0W~.WkD  
public class SortUtil { :%/\1$3P  
public final static int INSERT = 1; W il{FcHY  
public final static int BUBBLE = 2; u}Ei_ O<z  
public final static int SELECTION = 3; -l-AToO4  
public final static int SHELL = 4; =<[7J]%  
public final static int QUICK = 5; t/JOERw  
public final static int IMPROVED_QUICK = 6; xw4ey<"I  
public final static int MERGE = 7; m !#_CQ:  
public final static int IMPROVED_MERGE = 8; F~z_>1lpP&  
public final static int HEAP = 9; ulH0%`Fi  
V.;:u#{@-Q  
public static void sort(int[] data) { OM20-KDc5  
sort(data, IMPROVED_QUICK); gI)w^7Gi  
} <K.Bq]  
private static String[] name={ I:F'S#  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" EvwbhvA(  
}; 99F>n[5  
[#7y[<.P  
private static Sort[] impl=new Sort[]{ 4)c+t"h  
new InsertSort(), IIq"e~"Vs  
new BubbleSort(), ')C|`(hs   
new SelectionSort(), ,3:QB_  
new ShellSort(), 4-y6MH  
new QuickSort(), C0\%QXu  
new ImprovedQuickSort(), t-!Rgg$9  
new MergeSort(), Z,0O/RFJ.q  
new ImprovedMergeSort(), /K_ i8!y  
new HeapSort() :~t<L%tYF  
}; qPsyqn?Y|  
d4d\0[  
public static String toString(int algorithm){ McEmd.S<n  
return name[algorithm-1]; }l.KpdRT2  
} LkaG8#m1R  
M$,Jg5Dc  
public static void sort(int[] data, int algorithm) { davvI$TA  
impl[algorithm-1].sort(data); k?^%hO>[  
} ,q8(]n 4  
(-bRj#  
public static interface Sort { M|U';2hZN:  
public void sort(int[] data); %v]7BV^%6  
} ER{yuw  
BwJNi6,  
public static void swap(int[] data, int i, int j) { PPN q:,  
int temp = data;  \C|;F  
data = data[j]; w3<Z?lj:  
data[j] = temp; ^[en3aQ  
} 6/|U  
} c2/FHI0J;  
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