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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。 o4CgtqRs  
插入排序: Fh4kd>1 D  
a$SGFA}V  
package org.rut.util.algorithm.support; 14p <0BG  
\j]i"LpWb  
import org.rut.util.algorithm.SortUtil; }?=$?3W  
/** gUB%6vG\I  
* @author treeroot -&* 4~  
* @since 2006-2-2 SablF2doa  
* @version 1.0 BVX6  
*/ &i,xod6$  
public class InsertSort implements SortUtil.Sort{ gzthM8A  
?HBNd&gZ1G  
/* (non-Javadoc) 0;j)rmt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~P85Or  
*/ hYMo5?  
public void sort(int[] data) { V!F# ek:  
int temp; <m#ov G6  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); "$*&bC#dE  
} B#_<?  
} Vs)Pg\B?  
} #?Z>o16,u  
 ((}T^  
} tN=B9bm3j  
R(sPU>`MX  
冒泡排序: ?6F\cl0.  
7Rf${Wv0  
package org.rut.util.algorithm.support; W4Ey]y"  
wtCz%!OYB  
import org.rut.util.algorithm.SortUtil; P"LbWZ6Nj  
6;g"`l51  
/** )V<ML7_?  
* @author treeroot |<l  sv  
* @since 2006-2-2 %o4ZD7@ '  
* @version 1.0 Pwn3/+"%K  
*/ \s8j*  
public class BubbleSort implements SortUtil.Sort{ |gW>D=rkj  
FabzP_<b  
/* (non-Javadoc) mX9amS&B$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #MbkU])  
*/ ) N*,cTE  
public void sort(int[] data) { 0yhC_mI  
int temp; N|OI~boV%  
for(int i=0;i for(int j=data.length-1;j>i;j--){ $ \j/s:Y  
if(data[j] SortUtil.swap(data,j,j-1); G'oMZb ({=  
} x roo_  
} B 3Y,|*  
} ?32gug\i'}  
} iX]Vkx  
A~_*vcz  
} :nZVP_d+  
LE!xj 0  
选择排序: S: IhJQ4K  
cRm+?/  
package org.rut.util.algorithm.support; $[L~X M  
-\OvOkr  
import org.rut.util.algorithm.SortUtil; C:+-T+m[  
\a+.~_iL|  
/** 5\MCk"R!  
* @author treeroot >YwvM=b"V  
* @since 2006-2-2 ztcV[{[g  
* @version 1.0 n.&z^&$w\)  
*/ K}e %E&|>  
public class SelectionSort implements SortUtil.Sort { &eL02:[  
;x/do?FbT  
/* ^Oy97Y  
* (non-Javadoc) 1]Q;fe  
* N8!V%i?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F<K;tt  
*/ cI~uI '  
public void sort(int[] data) { z']TRjDbT  
int temp; 3mI(5~4A]?  
for (int i = 0; i < data.length; i++) { 0x&-/qce6W  
int lowIndex = i; 5G!0Yy['  
for (int j = data.length - 1; j > i; j--) { >/@wht4- j  
if (data[j] < data[lowIndex]) { Ah5`Cnv  
lowIndex = j; -][~_Hd{  
} SvZ~xTit  
} ^O#>LbM"x  
SortUtil.swap(data,i,lowIndex); M3m!u[6|  
} N~rA/B]T  
} 0!<qfT a  
TR;"&'#k  
} or~2r8  
LhN?j5XqM  
Shell排序: #|<\q*<  
ME.l{?v  
package org.rut.util.algorithm.support; kj_MzgC'?  
,E8:!r)6  
import org.rut.util.algorithm.SortUtil; @d&(*9Y  
s!WGs_1@  
/** _ebo  
* @author treeroot 0,b.;r  
* @since 2006-2-2 vO>Fj  
* @version 1.0 ,sw|OYb  
*/ ;gS)o#v0  
public class ShellSort implements SortUtil.Sort{ YfRjr  
t1Ty.F)r  
/* (non-Javadoc) nHAET  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eh\_;2P  
*/ S#h-X(4  
public void sort(int[] data) { {zd0 7!9y  
for(int i=data.length/2;i>2;i/=2){ O+iNR9O  
for(int j=0;j insertSort(data,j,i); ''t\J^+&  
} bSa%?laS  
} _"_ 21uB  
insertSort(data,0,1); %r E:5)  
} tuT>,BbR  
 |2<y  
/** 3jSt&+  
* @param data I+08tXO  
* @param j pco:]3BF6  
* @param i 5;WESk  
*/ s fD@lW3  
private void insertSort(int[] data, int start, int inc) { Y -yozt  
int temp; #mT\B[4h  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); .r ,wc*SF  
} Pz\4#E]  
} (G1KMy  
} 8jBrD1  
)RUx  
} %mqep5n(  
6d7E@}<  
快速排序: d- X6yRjnj  
4d x4hBd  
package org.rut.util.algorithm.support; M Ewa^  
|Y-{)5/5}  
import org.rut.util.algorithm.SortUtil; 91f{qq=#J{  
u-s*3Lg&  
/** ,xSNTOJ  
* @author treeroot 6Qc *:(GE  
* @since 2006-2-2 |WkWZZ^  
* @version 1.0 1k)31GEQw  
*/ .-Z=Aa>  
public class QuickSort implements SortUtil.Sort{ 8'>yB  
/Fr*k5I  
/* (non-Javadoc) MnL o{G]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3VZ}5  
*/ 3<XP/c";  
public void sort(int[] data) { rF^H\U:w  
quickSort(data,0,data.length-1); eoj(zY3  
} R|m!*B~  
private void quickSort(int[] data,int i,int j){ HfOaJ'+e<  
int pivotIndex=(i+j)/2; iv!;gMco  
file://swap Wq2 Bo*[*  
SortUtil.swap(data,pivotIndex,j); :Bh7mF-1  
$x~U&a  
int k=partition(data,i-1,j,data[j]); V3S"LJ  
SortUtil.swap(data,k,j); (^HU|   
if((k-i)>1) quickSort(data,i,k-1); 1b=,lm  
if((j-k)>1) quickSort(data,k+1,j); 2tw3 =)  
/$\N_`bM  
} u5.zckV  
/** H'"=C&D~  
* @param data SpO%nZ";g8  
* @param i \b;z$P\+*  
* @param j ]."t  
* @return G_QV'zQ  
*/ $jg~ a  
private int partition(int[] data, int l, int r,int pivot) { lyS`X  
do{ Fy*t[>  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); `t7z LC^c  
SortUtil.swap(data,l,r); K_Pbzj4(P  
} csFLBP  
while(l SortUtil.swap(data,l,r); h1~/zM/`  
return l; 7](aPm8  
} :IX_|8e ^  
^\oMsU5(  
} &s8vmUt  
C14"lB.  
改进后的快速排序: 3o2x&v  
kmg/hNtN  
package org.rut.util.algorithm.support; \IhHbcF`d  
;uho.)%N`F  
import org.rut.util.algorithm.SortUtil; -]Ny-[P  
yJ:rry  
/** F Jp<J  
* @author treeroot 7\AoMk}  
* @since 2006-2-2 [Mk:Zz%  
* @version 1.0 vkLKzsN' ]  
*/ 6{w'q&LYcE  
public class ImprovedQuickSort implements SortUtil.Sort { 6/.kL;AI  
Z817f]l  
private static int MAX_STACK_SIZE=4096; N^{}Qvrr  
private static int THRESHOLD=10; _oHxpeM  
/* (non-Javadoc) b{CS1P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %0zp`'3Y  
*/ V)fF|E~0  
public void sort(int[] data) { cte Wl/v  
int[] stack=new int[MAX_STACK_SIZE]; 12V-EG i  
#~o<9O  
int top=-1; Hf +oG  
int pivot; * EPJeblAV  
int pivotIndex,l,r;  6o1[fr  
Y%!k'\n[2  
stack[++top]=0; !S'!oinV  
stack[++top]=data.length-1; 8{ +KNqz  
cpm *m"Nk  
while(top>0){ y5j ;Daq  
int j=stack[top--]; ~J0r%P  
int i=stack[top--]; R].xT-1  
@d n& M9Z  
pivotIndex=(i+j)/2; BS2'BS8  
pivot=data[pivotIndex]; 5`6U:MDq  
dbg%n 0h  
SortUtil.swap(data,pivotIndex,j); Jim5Ul  
\('WS[$2  
file://partition ?^ R"a##  
l=i-1; /&E]qc*-p  
r=j; Uuktq)NU  
do{ 5 0dx[v8  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); pQ xv_4  
SortUtil.swap(data,l,r); Ml,in49  
} iX6*OEl/Q  
while(l SortUtil.swap(data,l,r); @,{Qa!A>l  
SortUtil.swap(data,l,j); ;D<;pW  
VFK]{!C_  
if((l-i)>THRESHOLD){ Q yhu=_&  
stack[++top]=i; T5-Yqz  
stack[++top]=l-1; d/b\:[B@  
} !ZM*)6^  
if((j-l)>THRESHOLD){ y~z&8XrH  
stack[++top]=l+1; mMT\"bb'  
stack[++top]=j; .dn#TtQv  
} or"9I1o  
u p]>UX8  
} /A-VT  
file://new InsertSort().sort(data); hGI5^!Cq  
insertSort(data); k_nQmU>  
} 7e[&hea  
/** RJ-J/NhWyI  
* @param data &srD7v9M8  
*/ psuK\ s  
private void insertSort(int[] data) { ky'G/ z  
int temp; BO+t o.  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); S rhBU6K  
} NAO0b5-h  
} +1a2Un  
} 5'[yw:P-8  
T[-Tqi NT  
} $,o@&QT?AT  
v <m=g!  
归并排序: DG,m;vg+  
'8LHX6FXK  
package org.rut.util.algorithm.support; F5H]$AjW  
Q6p75$SVq  
import org.rut.util.algorithm.SortUtil; R8Dn GR  
A~;.9{6J[t  
/** +E+I.}sOB  
* @author treeroot ([A%>u>h  
* @since 2006-2-2 YpvFv-  
* @version 1.0 qykI[4  
*/ [;#^h/5E  
public class MergeSort implements SortUtil.Sort{ xs?]DJj  
D7Ds*X`!l  
/* (non-Javadoc) g(R!M0hdF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'X~CrgQl  
*/ JHuA}f{2&  
public void sort(int[] data) { r@Xh8 r;  
int[] temp=new int[data.length]; ;+n25_9  
mergeSort(data,temp,0,data.length-1); S-79uo  
} @2eH;?uO  
/S9n!H:MT  
private void mergeSort(int[] data,int[] temp,int l,int r){ &-KQ m20n  
int mid=(l+r)/2; {~V_6wY g  
if(l==r) return ; 9 1ec^g  
mergeSort(data,temp,l,mid); y(j vl|z[  
mergeSort(data,temp,mid+1,r); i x_a  
for(int i=l;i<=r;i++){ jF{)2|5  
temp=data; U8eU[|-8O/  
} LbnF8tj}h  
int i1=l; fK{Z{)D  
int i2=mid+1; ^AT#A<{1(  
for(int cur=l;cur<=r;cur++){ nIl<2H]F`  
if(i1==mid+1) m@yx6[E#  
data[cur]=temp[i2++]; {sUc2vR  
else if(i2>r) 7 .xejz  
data[cur]=temp[i1++]; ,%KMi-w]q,  
else if(temp[i1] data[cur]=temp[i1++]; YVO~0bX:  
else N8Un42  
data[cur]=temp[i2++]; `nL^]i  
} }b>e lz  
} V_9> Z?  
RohD.`D  
} Q[bIkvr|  
|99Z& <8f  
改进后的归并排序: 84gj%tw'-  
Ws[d.El  
package org.rut.util.algorithm.support; _m1WY7  
nVk]Qe  
import org.rut.util.algorithm.SortUtil; PU%WpI.w  
{'G u@l  
/** ;{rl Y>  
* @author treeroot &_Z8:5e  
* @since 2006-2-2 =@k 3*#\  
* @version 1.0 w*AXD!}  
*/ e{,[\7nF  
public class ImprovedMergeSort implements SortUtil.Sort { BBsZPJ5  
LESF*rh=  
private static final int THRESHOLD = 10; L\^H#:?t  
@"`{Sh`Y$  
/* hF-X8$[  
* (non-Javadoc) Y0nuwX*{  
* SFa^$w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jqy?Od )  
*/ N-GQ\&   
public void sort(int[] data) { RH<C:!F^  
int[] temp=new int[data.length]; nb|"dK|  
mergeSort(data,temp,0,data.length-1); hN_,Vyf  
} D 3}e{J8  
G$ Ii  
private void mergeSort(int[] data, int[] temp, int l, int r) { U=UnE"h  
int i, j, k; Xu\22/Co  
int mid = (l + r) / 2; LWP&Si*j  
if (l == r) q8vRUlf  
return; [>f4&yY  
if ((mid - l) >= THRESHOLD) @0rwvyE=+3  
mergeSort(data, temp, l, mid); 3WF6bJN  
else _xXDvBU  
insertSort(data, l, mid - l + 1); jz$83TB-  
if ((r - mid) > THRESHOLD) bq` 0$c%hN  
mergeSort(data, temp, mid + 1, r); h>K%Ox R  
else %LZf= `:(  
insertSort(data, mid + 1, r - mid); d:=:l?  
2BIOA#@t  
for (i = l; i <= mid; i++) { veGRwir  
temp = data; ]i pltR7k  
} GGn/J&k  
for (j = 1; j <= r - mid; j++) { :#p!&Fi  
temp[r - j + 1] = data[j + mid]; tL@m5M%:N2  
} N @sVA%L.  
int a = temp[l]; -%)8=  
int b = temp[r]; rDWqJ<8  
for (i = l, j = r, k = l; k <= r; k++) { W= \gPCo  
if (a < b) { y'pX/5R0  
data[k] = temp[i++]; #oD * H:%*  
a = temp; ^k}jPc6  
} else { #&c}i n"!  
data[k] = temp[j--]; }!g^}BWWp  
b = temp[j]; `F1 ( v  
} RJZ4fl  
} %O3 r>o=  
} D*#r V P  
' 5"`H>[  
/** %j?<v@y  
* @param data a=3{UEi'o  
* @param l +']S  
* @param i !U !}*clYL  
*/ *S4*FH;8  
private void insertSort(int[] data, int start, int len) { {pNf& '  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 9}6^5f?|  
} =24<d!R  
} ssC5YtF7X  
} tmI2BBv  
} goV[C]|  
BpKgUwf;C  
堆排序: APR%ZpG  
6?c(ueiL[  
package org.rut.util.algorithm.support; I~>L4~g)  
5zH?1Z~*  
import org.rut.util.algorithm.SortUtil; O~AOZ^a:2  
hkL[hD  
/** 8TnByKZz  
* @author treeroot ~V4&l3o  
* @since 2006-2-2 y(RK|r  
* @version 1.0 0Ie9T1D=  
*/ .v:K`y;f\(  
public class HeapSort implements SortUtil.Sort{ ]%5DuE\M8\  
W=EvEx^?%  
/* (non-Javadoc) AyMMr_q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hol54)7$3:  
*/ Ng3MfbFG  
public void sort(int[] data) { UN}jpu<h  
MaxHeap h=new MaxHeap(); xdH*[  
h.init(data); ]OOL4=b  
for(int i=0;i h.remove(); )d6Ya1vJH  
System.arraycopy(h.queue,1,data,0,data.length); PDcZno?  
} 6 4da~SEn  
Y@Kp'+t(!  
private static class MaxHeap{ m ,U`hPJ  
@"#W\m8  
void init(int[] data){ 6"W~%FSJX  
this.queue=new int[data.length+1]; 43Yav+G(+  
for(int i=0;i queue[++size]=data; }$ Am;%?p  
fixUp(size); ]S~Z8T-[  
} Dyj5a($9"{  
} \5_7!.  
&@xixbg  
private int size=0; U/oncC5  
4yH=dl4=44  
private int[] queue; ~a5p_xP  
[EJ[Gg0m  
public int get() { Kj_hCSvf3e  
return queue[1]; _azg 0.)  
} l*]*.?m/5  
e/m ,PE  
public void remove() { h+x"?^   
SortUtil.swap(queue,1,size--); x.+}-(`W#~  
fixDown(1); #is:6Z,OEU  
} 8uX1('+T*  
file://fixdown Rt<8 &.m4  
private void fixDown(int k) { t "J"G@1)  
int j; zZ|Si  
while ((j = k << 1) <= size) { 1;[\xqJ  
if (j < size %26amp;%26amp; queue[j] j++; o~F @1  
if (queue[k]>queue[j]) file://不用交换 q@p-)+D;  
break; ! \H!9FR  
SortUtil.swap(queue,j,k); _e=R[  
k = j; tw]RH(g+#  
} cRX0i;zag  
} |.Bb Pfe8f  
private void fixUp(int k) { >'@yq  
while (k > 1) { 3I?? K)Yl  
int j = k >> 1; _1`*&k JL~  
if (queue[j]>queue[k]) Z2WAVSw  
break; _{o=I?+]  
SortUtil.swap(queue,j,k); rs3Uk.Z^ '  
k = j; M? oK@i  
} EW{z?/  
} +xwz.:::  
p IXBJk  
} 5yO6szg  
j3rBEQ,R  
} o)7gKWjujP  
-tSWYp{  
SortUtil: (KHTgZ6  
9/MUzt  
package org.rut.util.algorithm; `av8|;  
8ltHR]v  
import org.rut.util.algorithm.support.BubbleSort; AyKaazm]9  
import org.rut.util.algorithm.support.HeapSort; #{GUu ',?&  
import org.rut.util.algorithm.support.ImprovedMergeSort; n< [np;\  
import org.rut.util.algorithm.support.ImprovedQuickSort; uRQm.8b  
import org.rut.util.algorithm.support.InsertSort; U%ce0z  
import org.rut.util.algorithm.support.MergeSort; 5DfAL;o!  
import org.rut.util.algorithm.support.QuickSort; <$n%h/2%  
import org.rut.util.algorithm.support.SelectionSort; WJZW5 Xt  
import org.rut.util.algorithm.support.ShellSort; mk1;22o{TX  
H>e?FDs0*R  
/** F9ry?g=h  
* @author treeroot x{C=rdp__  
* @since 2006-2-2 ?MuM _6  
* @version 1.0 qu8i Jq  
*/ REhXW_x  
public class SortUtil { 2"NRnCx *  
public final static int INSERT = 1; SHPaSq'&N  
public final static int BUBBLE = 2; E) >~0jv  
public final static int SELECTION = 3; +}X?+Epm  
public final static int SHELL = 4; }.7!@!q.  
public final static int QUICK = 5; -Xkdu?6Eh  
public final static int IMPROVED_QUICK = 6; 28-6(oG  
public final static int MERGE = 7; *~fZ9EkD  
public final static int IMPROVED_MERGE = 8; |^Z1 D TAw  
public final static int HEAP = 9; L*9^-,  
n6[bF "v  
public static void sort(int[] data) { r^ &{0c&o  
sort(data, IMPROVED_QUICK); 46*o_A,"  
} t(CdoE,6  
private static String[] name={ Lm9y!>1"O  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 0X-u'=Bs  
}; er^z:1'  
X",fp  
private static Sort[] impl=new Sort[]{ %WCA?W0:4  
new InsertSort(), Vf*!m~]Vqi  
new BubbleSort(), (hd^  
new SelectionSort(), q~r )B}  
new ShellSort(), \CB{Ut+s  
new QuickSort(), LS4c|Dv  
new ImprovedQuickSort(), oDx*}[/  
new MergeSort(), +GgWd=X.Y  
new ImprovedMergeSort(), ji`N1e,l  
new HeapSort() SZ~Ti|^  
}; U n2xZ[4  
JTpKF_Za<  
public static String toString(int algorithm){ B @UaaWh  
return name[algorithm-1]; 'rRo2oTN  
} rOB-2@-  
xzy7I6X  
public static void sort(int[] data, int algorithm) { ,Vt7Kiu  
impl[algorithm-1].sort(data); PX[taDN  
} ^M  PU?k  
1okL]VrI  
public static interface Sort { abWmPi  
public void sort(int[] data); rZe"*$e  
} *(s+u~, I  
Q<d\K(<3?:  
public static void swap(int[] data, int i, int j) { T%KZV/  
int temp = data; %]>c4"H  
data = data[j]; WhSQ>h!@s  
data[j] = temp; 0X`Qt[  
} "a-Ex ]  
} 7s,IT8ii  
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