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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。 m^5s >hUl  
插入排序: 2h5tBEOX.s  
Mo~ki"9.  
package org.rut.util.algorithm.support; DqRLx85d1  
H kSL5@  
import org.rut.util.algorithm.SortUtil; 4@= aa  
/** 4VC/-.At  
* @author treeroot 9armirfV'P  
* @since 2006-2-2 ;Sy/N||  
* @version 1.0 zU=YNrn  
*/ Th_Q owk  
public class InsertSort implements SortUtil.Sort{ oEN)Dw o  
|x*{fXdMhr  
/* (non-Javadoc) nD(w @c?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TS/Cp{  
*/ ~@[(U!G  
public void sort(int[] data) { R&]c"cO L8  
int temp; 5FZ47m ~{Z  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); `D4oAx d9  
} (y%%6#bd  
} q"P5,:W  
} :EYu 4Y  
U8EJC .e&O  
} <g] ou YHZ  
]Jja  
冒泡排序: 2%`^(\y  
Ng?apaIi@~  
package org.rut.util.algorithm.support; |)m*EME  
#,7eQaica  
import org.rut.util.algorithm.SortUtil; 2O$95 M  
q;CayN'I  
/** 'y'T'2N3  
* @author treeroot =U=e?AOG2  
* @since 2006-2-2 [0h* &  
* @version 1.0 xi;/^)r  
*/ U? {'n#n 5  
public class BubbleSort implements SortUtil.Sort{ _{[k[]  
MV% :ES?  
/* (non-Javadoc) M ' a&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GU:r vS!  
*/ ,}eRnl\  
public void sort(int[] data) { hN Z4v/  
int temp; j2< !z;2  
for(int i=0;i for(int j=data.length-1;j>i;j--){ (y-x01H  
if(data[j] SortUtil.swap(data,j,j-1); A4~D#V  
} YtV |e|aD  
} LDT'FwMjy  
} muL>g_H  
} ox!|)^`$_  
<$RS*n  
} Uuwq7oFub  
fBHkLRFH  
选择排序: fR+Ov8PCq  
I;`Ko_i  
package org.rut.util.algorithm.support; qk_p}l-F1  
N>uA|<b,  
import org.rut.util.algorithm.SortUtil; R88(dEK  
t}5'(9  
/** "[%;B0J  
* @author treeroot ZAI1p+  
* @since 2006-2-2 n@G:e-m{A  
* @version 1.0 @4G.(zW  
*/ }}kS~ w-#  
public class SelectionSort implements SortUtil.Sort { Paae-EmC  
;FV~q{  
/* EpFIKV!  
* (non-Javadoc) K[iY{  
* .Ws iOJU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "7To c4  
*/ mp&Le YYn  
public void sort(int[] data) { O vyB<r  
int temp; u#zP>!  
for (int i = 0; i < data.length; i++) { %f_)<NP9=  
int lowIndex = i; !~Hafn-1  
for (int j = data.length - 1; j > i; j--) { (hhdbf  
if (data[j] < data[lowIndex]) { 5@w'_#!)  
lowIndex = j; BxSk%$J  
} xm<5S;E5U4  
} "-0pz\a  
SortUtil.swap(data,i,lowIndex); vR6^n~  
} ef;& Y>/  
} ]ro1{wm!WU  
*eJhd w*  
} oyKt({  
SX_kr^#  
Shell排序: <6d{k[7fz)  
+XU$GSw3(  
package org.rut.util.algorithm.support; n.Ur-ot  
WU+Jo@]y  
import org.rut.util.algorithm.SortUtil; J9b?}-O)  
p%1xj2 ?nN  
/** .d#G]8suF  
* @author treeroot g(@$uJ  
* @since 2006-2-2 +WV_`Rx#  
* @version 1.0 4%',scn  
*/ >/kPnpJ  
public class ShellSort implements SortUtil.Sort{ \,@Yl.,+  
9sfB+]}h  
/* (non-Javadoc) =0@d|LeZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a0V8L+v(  
*/ "lv:hz  
public void sort(int[] data) { T>%uRK$  
for(int i=data.length/2;i>2;i/=2){ ;EE&~&*w  
for(int j=0;j insertSort(data,j,i); fwnYzd3  
} dCoi>PO  
} ^B&ahk  
insertSort(data,0,1); ^ RcIE (  
} ery?G-  
ZZ]OR;8  
/** @MlU!oR&  
* @param data UgnsV*e&  
* @param j /QV. U.>G  
* @param i YaY;o^11/  
*/ =}%#$  
private void insertSort(int[] data, int start, int inc) { +AgkPMy  
int temp; $8X tI  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ,#'o)O#  
} 'n>3`1E,  
} 9GtVI^]  
} bzj!d|T`  
MoKXl?B<  
} #g-*n@ 1  
jOm&yX  
快速排序: 7n\j"0z  
 [A%e6  
package org.rut.util.algorithm.support; vS J<  
E-tNB{r@  
import org.rut.util.algorithm.SortUtil;  $D, wO  
o+X'(!Trw  
/** FSYjp{z5  
* @author treeroot c~pUhx1(  
* @since 2006-2-2 KWigMh\r  
* @version 1.0 ~Q$c!=   
*/ f_5R!;  
public class QuickSort implements SortUtil.Sort{ hPqapz]HcP  
z)<pqN  
/* (non-Javadoc) 8@LykJbP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =:n[{/O=  
*/ Kz3h]/A.  
public void sort(int[] data) { wsb=[$C  
quickSort(data,0,data.length-1); [y=$2  
} bKt3x+x(  
private void quickSort(int[] data,int i,int j){ vVAZSR#  
int pivotIndex=(i+j)/2; xeP;"J}  
file://swap u>Axq3F  
SortUtil.swap(data,pivotIndex,j); QkCoW[sn  
*p#YK|  
int k=partition(data,i-1,j,data[j]); XvzV lKL  
SortUtil.swap(data,k,j); X!M fJ^)q  
if((k-i)>1) quickSort(data,i,k-1); Xv5Ev@T  
if((j-k)>1) quickSort(data,k+1,j); Y(I*%=:$  
e/HX,sf_g  
} ZAo)_za&mH  
/** Y%?!AmER  
* @param data vu.S>2Wv  
* @param i s!o<Pd yJK  
* @param j X$9D0;L  
* @return E~Up\f  
*/ aIt 0;D  
private int partition(int[] data, int l, int r,int pivot) { Am=PUQF$  
do{ YI),q.3X~  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); _9O }d  
SortUtil.swap(data,l,r); <T.3ZZ%  
} ^%*{:0'  
while(l SortUtil.swap(data,l,r); IrwF B  
return l; a+a%}76N  
} VGDEP!)-8  
,YMdXYu`s  
} ;,B@84'  
;'18  
改进后的快速排序: ah6F^Kpl{  
eUw;!Du  
package org.rut.util.algorithm.support; OB  i!fLa  
f+*2K^B  
import org.rut.util.algorithm.SortUtil; R?9Plzt5  
?L#SnnE  
/** W4rw;(\  
* @author treeroot (b 2^d  
* @since 2006-2-2 pu)9"Ad[ G  
* @version 1.0 l<K.!z<-:8  
*/ h }%M  
public class ImprovedQuickSort implements SortUtil.Sort { MVL }[J  
tA u|8aL  
private static int MAX_STACK_SIZE=4096; u/:Sf*;?  
private static int THRESHOLD=10; "vRqtEBO@  
/* (non-Javadoc) \utH*;J|x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dv9Pb5i  
*/ a5~C:EU0  
public void sort(int[] data) { .idl@%  
int[] stack=new int[MAX_STACK_SIZE]; 3{L vKe  
+VW]%6 +  
int top=-1; 2Ku#j ('  
int pivot; <sFf'W_3{  
int pivotIndex,l,r; yExyx?j.  
xY'YbHFz  
stack[++top]=0; leYmV FE  
stack[++top]=data.length-1; nT .2jk+  
'nDT.i  
while(top>0){ W6/p-e5y  
int j=stack[top--]; +#db_k  
int i=stack[top--]; L2O57rT2  
4aGpKvW  
pivotIndex=(i+j)/2; Z!i'Tbfn  
pivot=data[pivotIndex]; |Gs-9+'y  
~u`! Gi  
SortUtil.swap(data,pivotIndex,j); 3@ukkO)   
@dKf]&h%%  
file://partition n2hsG.4  
l=i-1; z iGL4c0p  
r=j; w>UV\`x  
do{ b`Ek;nYek  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); F"#*8P  
SortUtil.swap(data,l,r); 43Uy<%yb>}  
} K:50?r_-6  
while(l SortUtil.swap(data,l,r); yWk:u 5  
SortUtil.swap(data,l,j); knZd}?I*  
0H]9$D  
if((l-i)>THRESHOLD){ p;Ok.cXVp  
stack[++top]=i; CrX-?$  
stack[++top]=l-1; F7Yuky  
} 4i&!V9@:  
if((j-l)>THRESHOLD){ C4TD@  
stack[++top]=l+1; ?gP/XjToMg  
stack[++top]=j; EMH}VigR  
} Jpnp'  
2qR@: ^  
} UiN ^x  
file://new InsertSort().sort(data); ;.m[&h 0  
insertSort(data); -;.fU44O[#  
} a2)*tbM 9\  
/** 8k% :w0H  
* @param data au~gJW-  
*/ SygsZv&LZ  
private void insertSort(int[] data) { Dp'af4+%$  
int temp; IN*Z__l8j`  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5S?Xl|8E  
} r|$g((g  
} uty]-k   
} ECfY~qK  
.SFwjriZ  
} ~t$VzL1  
Fd0FG A&L  
归并排序: 9{&x-ugM  
:udZfA\sW  
package org.rut.util.algorithm.support; xBd% e-r  
|0Kt@ AJY  
import org.rut.util.algorithm.SortUtil; PSvRO% &  
_J`M>W)8  
/** FpYoCyD}  
* @author treeroot v2SsfhT  
* @since 2006-2-2 4K,&Q/Vdd7  
* @version 1.0 ON^u|*kO  
*/ 4^A'A.0  
public class MergeSort implements SortUtil.Sort{ J#^M   
}:A kpm  
/* (non-Javadoc) TR;-xst@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HxAa,+k  
*/ Yi,um-%  
public void sort(int[] data) { R2gax;  
int[] temp=new int[data.length]; |9@;Muq;  
mergeSort(data,temp,0,data.length-1); IrK )N  
} ng\S%nA&J  
D-/A>  
private void mergeSort(int[] data,int[] temp,int l,int r){ ^B>6 !  
int mid=(l+r)/2; VzNH%  
if(l==r) return ; [ ff.R  
mergeSort(data,temp,l,mid); =^{+h>#s@  
mergeSort(data,temp,mid+1,r); 0J B"@U&-  
for(int i=l;i<=r;i++){ 9)`wd&!  
temp=data; g [K8G  
} owB)+  
int i1=l; (nG  
int i2=mid+1; (TsgVq]L  
for(int cur=l;cur<=r;cur++){ ny0`~bl{p  
if(i1==mid+1) xFh}%mwpt[  
data[cur]=temp[i2++]; ^YV[1~O  
else if(i2>r) bjZ?WZr  
data[cur]=temp[i1++]; G"(!5+DLy  
else if(temp[i1] data[cur]=temp[i1++]; F ry5v?22  
else 1U!CD-%(  
data[cur]=temp[i2++]; .FyC4"b=c  
} `3Y+:!q  
} 4i\n1RW  
"@_f>3z  
} 1{qg@xlj  
~drNlt9jf  
改进后的归并排序: Ki2_Nh>tM  
m"5gzH  
package org.rut.util.algorithm.support; ">7 bnOJ  
d p].FS  
import org.rut.util.algorithm.SortUtil; *^]ba>  
)deuB5kz  
/** aE}u5L$#  
* @author treeroot @,hvXl-G*  
* @since 2006-2-2 !{+(oDN  
* @version 1.0 fQ@["b   
*/ ftbu:RtK^^  
public class ImprovedMergeSort implements SortUtil.Sort { 4R.#=]F  
. Hw^Nx  
private static final int THRESHOLD = 10; '?nhpT^  
eL*Edl|#  
/* "&~Um U4CN  
* (non-Javadoc) >dO^pDSs  
* o_S8fHqjt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6b0#z#E  
*/ UaB!,vs3st  
public void sort(int[] data) { 5E]I  
int[] temp=new int[data.length]; 8V@3T/}  
mergeSort(data,temp,0,data.length-1); vU _#(jZ  
} [>fE{ ~Y  
(_D#gr{S=  
private void mergeSort(int[] data, int[] temp, int l, int r) { 4r %NtXAa  
int i, j, k; 3j6$!89'  
int mid = (l + r) / 2; K-/fq=z  
if (l == r) awUIYAgJ3  
return; Z^b1i`v  
if ((mid - l) >= THRESHOLD) ^K8Ey#T  
mergeSort(data, temp, l, mid); fz%urbJR  
else AO/R 2a(:  
insertSort(data, l, mid - l + 1); 6D>o(b2  
if ((r - mid) > THRESHOLD) /D eU`rj  
mergeSort(data, temp, mid + 1, r); "&An9H'  
else ^ `!6Yax?  
insertSort(data, mid + 1, r - mid); <X:7$v6T|  
NVQ IRQ.  
for (i = l; i <= mid; i++) { PR6{Y]e%  
temp = data; N=(rl#<  
} ,>)/y  
for (j = 1; j <= r - mid; j++) { mwBOhEefNJ  
temp[r - j + 1] = data[j + mid]; /.vB /{2  
} WVKzh  
int a = temp[l]; mZmwCS8  
int b = temp[r]; A@GyKx%x$  
for (i = l, j = r, k = l; k <= r; k++) { 74>.E^ /x  
if (a < b) { f"S^:F0  
data[k] = temp[i++]; l%U{Unwu  
a = temp; Rc @p!Xi  
} else { &R25J$  
data[k] = temp[j--]; 1aKY+4/G  
b = temp[j]; JPRl/P$  
} P)4SrqW_  
} b:oB $E  
} gW RSS=8%  
>Qr(#Bt)  
/** (Zp'|hx8o  
* @param data Fq:BRgCE  
* @param l S'q (Qo  
* @param i 0I1bY]*  
*/ c<|;<8ew  
private void insertSort(int[] data, int start, int len) { JS} iNS'X  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 46sV\In>?  
} R0vWj9nPh  
} B\`4TU}kE  
} 4vF1  
} UH2fP G  
j8P=8w{  
堆排序: R!5j1hMN`  
M"W-|t)~  
package org.rut.util.algorithm.support; _DS_AW}D  
!{jDZ?z{h  
import org.rut.util.algorithm.SortUtil; qq G24**9v  
7vZznN8e  
/** M, f6UYo=  
* @author treeroot @-)jU!  
* @since 2006-2-2 gy0l@ 5 N  
* @version 1.0 WZ> }  
*/ >La!O~d  
public class HeapSort implements SortUtil.Sort{ xj\! Sn2  
,ir(~g+{g  
/* (non-Javadoc) _XvSe]`f`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A&XI1. j6  
*/ EVX*YGxx6  
public void sort(int[] data) {  *Yj!f68  
MaxHeap h=new MaxHeap(); D<% /:M  
h.init(data); {B+|",O5)  
for(int i=0;i h.remove(); G&,F-|`  
System.arraycopy(h.queue,1,data,0,data.length); SHWD@WLE4  
} iEjUo, Y[  
O1[`2kj^HB  
private static class MaxHeap{ DC+ p s  
GI']&{  
void init(int[] data){ ;&=c@>!xP#  
this.queue=new int[data.length+1]; uf q9+}  
for(int i=0;i queue[++size]=data; 2Tt^^Lb  
fixUp(size); |}$ZOwc  
} *7cc4 wGQ  
} 4b5'nu  
.Aj4?AXWc  
private int size=0; GE?M. '!{{  
m}`!FaB #  
private int[] queue; n3x< L:)  
*{TB<^ *  
public int get() { 9\ f%+?p  
return queue[1]; pT ]:TRPS  
} 'Sk-L 5  
z"D'rHxy  
public void remove() { ( &N`N1  
SortUtil.swap(queue,1,size--); q#pD}Xe$  
fixDown(1); 2":{3=oW~  
} %OT} r  
file://fixdown #z$g1\v  
private void fixDown(int k) { Cg#@JuwHa  
int j; T'8d|$X  
while ((j = k << 1) <= size) { U?/C>g%/PI  
if (j < size %26amp;%26amp; queue[j] j++; jc0Trs{Jf  
if (queue[k]>queue[j]) file://不用交换 _|1m]2'9  
break; pA?kv]l(  
SortUtil.swap(queue,j,k); >oYr=O  
k = j; U]Pl` =SL  
} SyL:=NZ  
} ']Z1nb  
private void fixUp(int k) { $*-UY  
while (k > 1) { xZ84q'i"  
int j = k >> 1; HdR%n  
if (queue[j]>queue[k]) K."%PdC  
break; w%'8bH!  
SortUtil.swap(queue,j,k); 4arqlz lo  
k = j; M?[~_0_J  
} Rlyx& C8  
} (,P6cWt}"  
<&47W  
} vr2cDk{  
,Y+J.8.H   
} 0D==0n  
sQl`0|VH  
SortUtil: a Byetc88/  
P70]Ju  
package org.rut.util.algorithm; &\p=s.y?j  
\A%s" O/  
import org.rut.util.algorithm.support.BubbleSort; 'O:QS)  
import org.rut.util.algorithm.support.HeapSort; x )w6  
import org.rut.util.algorithm.support.ImprovedMergeSort; 0YsBAfRG  
import org.rut.util.algorithm.support.ImprovedQuickSort; nm}wdel"  
import org.rut.util.algorithm.support.InsertSort; @hVF}ybp  
import org.rut.util.algorithm.support.MergeSort; GeydVT-  
import org.rut.util.algorithm.support.QuickSort; g#}a?kTM@  
import org.rut.util.algorithm.support.SelectionSort; T*3>LY+bb  
import org.rut.util.algorithm.support.ShellSort; #Y>os3]  
I7C*P~32{n  
/** .$]%gjIBCl  
* @author treeroot @a]O(S>Ub  
* @since 2006-2-2 a9%^Jvm"  
* @version 1.0 )1PjI9M  
*/ 7SVq fWp  
public class SortUtil { ;;{!wA+"D  
public final static int INSERT = 1; 5JvrQGvL  
public final static int BUBBLE = 2; aePLP  
public final static int SELECTION = 3; iVdY\+N!<  
public final static int SHELL = 4; vj#Y /B  
public final static int QUICK = 5; K3I|d;Y~X!  
public final static int IMPROVED_QUICK = 6; 9vL n#_  
public final static int MERGE = 7; "tX=^4   
public final static int IMPROVED_MERGE = 8; Bsc&#  
public final static int HEAP = 9; bw[s<z|LKA  
sgxD5xj}4  
public static void sort(int[] data) { 7FB aN7l  
sort(data, IMPROVED_QUICK); ==XO:P  
} jMUN|(=Y  
private static String[] name={ +#@)C?G,TF  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" sc)}r_|g  
}; }:zTz% _K  
1[U`,(C1  
private static Sort[] impl=new Sort[]{ #=V[vbTY  
new InsertSort(), 8x/]H(J  
new BubbleSort(), A^3M~  
new SelectionSort(), f8JWg9 m  
new ShellSort(), |08'd5  
new QuickSort(), YQ _]Jv k  
new ImprovedQuickSort(), dd6m/3uUW  
new MergeSort(), umJ!j&(  
new ImprovedMergeSort(), 41oXOB  
new HeapSort() Op>l~{{{  
}; +>*! 3x+sE  
J&w'0  
public static String toString(int algorithm){ @;1Ym\zc  
return name[algorithm-1]; gAxf5 A_x)  
} 1Ht&;V  
kH|cB!?x  
public static void sort(int[] data, int algorithm) { JQ"R%g` 8  
impl[algorithm-1].sort(data); g\~n5=-D  
} Z6\H4,k&  
>"?jW@|g  
public static interface Sort { >\s8S}p  
public void sort(int[] data); U9/6F8D1Y1  
} q:a-tdv2  
d(!g9H  
public static void swap(int[] data, int i, int j) { ra]lC7<H  
int temp = data; )wdTs>W7  
data = data[j]; 79MF;>=tV  
data[j] = temp; Gw@]w;ed  
} - :~"c@D  
} MIx,#]C&  
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