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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。 ey7 f9  
插入排序: -$,TMqM  
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package org.rut.util.algorithm.support; BO~ 0ON0  
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import org.rut.util.algorithm.SortUtil; x nsLf?>]  
/** AifWf2$S  
* @author treeroot 4KhV|#-;k  
* @since 2006-2-2 i1ixi\P{0  
* @version 1.0 6tgt>\y  
*/ -`*a'p-=  
public class InsertSort implements SortUtil.Sort{ :%t U'w  
?pW`cFLDHF  
/* (non-Javadoc) GZN ^k+w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6M @[B|Q(  
*/ n4;.W#\  
public void sort(int[] data) { }aa'\8  
int temp; Q 3hKk$Y  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); I667Gz$j5  
} kJ'!r  
} T"{>t  
} S'Q@ScJ  
vOn`/5-  
} b[r8 e  
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冒泡排序: M8MR oA6F  
u@W|gLT1  
package org.rut.util.algorithm.support; &47i"%  
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import org.rut.util.algorithm.SortUtil; [_R~%Yh+'E  
,k +IPkN+  
/** CpUk Cgg  
* @author treeroot [\^ n=  
* @since 2006-2-2 h]IxXP?h[  
* @version 1.0 1OGx>J6  
*/ |s7s6k)mm  
public class BubbleSort implements SortUtil.Sort{ t6bV?nc  
LM:vsG  
/* (non-Javadoc) BRw .]&/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y`<*U;xL  
*/ .5^cb%B*  
public void sort(int[] data) { ^n*)7K[  
int temp; f%is~e~wc  
for(int i=0;i for(int j=data.length-1;j>i;j--){  U f:`  
if(data[j] SortUtil.swap(data,j,j-1); R/~p>apg8  
} 6dq(T_eG  
} ne>pOK<vZ  
} Nyku4r0  
} (yH'{6g\  
[^WC lRF  
} $SlIr<'*"  
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选择排序: %0S3V[4I  
t URu0`](  
package org.rut.util.algorithm.support; 5bRJS70M  
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import org.rut.util.algorithm.SortUtil; ]J1dtN=  
VQc_|z_ s  
/** b.2aHu( 3  
* @author treeroot "3X2VFwoJ  
* @since 2006-2-2 VACQ+  
* @version 1.0 &|s0P   
*/ R6` WN  
public class SelectionSort implements SortUtil.Sort { iOd&B B6  
<wk!hTm W  
/* qmkAg }2  
* (non-Javadoc) HZ aV7dOZ8  
* _F6OM5F"N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :i0uPh\0  
*/ $njUXSQ;  
public void sort(int[] data) { S3q&rqarC%  
int temp; 4`4kfiS$  
for (int i = 0; i < data.length; i++) { Tm~" IB*  
int lowIndex = i; \o z#l'z  
for (int j = data.length - 1; j > i; j--) { -R|,9o^  
if (data[j] < data[lowIndex]) { 6hno)kd{=  
lowIndex = j; ;"a=gr  
} AFq~QXmr)  
} M1k{t%M+S  
SortUtil.swap(data,i,lowIndex); Kr?TxhUHd  
} 5#HW2"7  
} iowTLq!?  
Gj1&tjK  
} 0\X\izQ5  
d6Ht2  
Shell排序: "|x^|n8i  
%v=*Wb\3|  
package org.rut.util.algorithm.support; =ElO?9&  
Y4J3-wK5  
import org.rut.util.algorithm.SortUtil; j_qbAP  
4V{:uuI;f  
/** []\+k31D  
* @author treeroot w;%.2VJ  
* @since 2006-2-2 GoJ.&aH $  
* @version 1.0 KI.q@zO6|  
*/ /MIe(,>Uh  
public class ShellSort implements SortUtil.Sort{ k9<;woOBO  
35h 8O,Y  
/* (non-Javadoc) 'F/~o1\.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5VfyU8)7X  
*/ +KF^Z$I  
public void sort(int[] data) { Q7HRzA^-  
for(int i=data.length/2;i>2;i/=2){ Sgeh %f  
for(int j=0;j insertSort(data,j,i); i[O& )N,c  
} `fA@hK   
} ^7 w+l @  
insertSort(data,0,1); r)Ma3FL0;  
} |-fg j'  
/fKx} }g)  
/** 5[8xV%>;  
* @param data Lz |? ek7Q  
* @param j b(,M1.[qt  
* @param i a4m n*,  
*/ MR;1 2*p  
private void insertSort(int[] data, int start, int inc) { YDIG,%uv  
int temp; pI1-cV,`  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ;dkYf24  
} T]^62(So  
}  Fe#  1  
} 9>= ;FY  
9"N~yKa`"K  
} B~'vCuE  
Q3XpHnufu+  
快速排序: 1rNzJ;'  
`}D,5^9]  
package org.rut.util.algorithm.support; kI,yU}<Fq  
g!FuY/%+  
import org.rut.util.algorithm.SortUtil; [T|aw1SoN  
t=BUN  
/** N+9VYH"*  
* @author treeroot )~GmU9f  
* @since 2006-2-2 #%pI(,o=  
* @version 1.0 h8x MI  
*/ e|g5=2(Pr&  
public class QuickSort implements SortUtil.Sort{ 2A']y D  
+=>,Pto<  
/* (non-Javadoc) M=8.Bp|Ye  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZFi ee|,q  
*/ ](Xb _xMf  
public void sort(int[] data) { %@<8<6&q  
quickSort(data,0,data.length-1); ML}J\7R  
} pf]xqhL  
private void quickSort(int[] data,int i,int j){ ]l;o}+`G  
int pivotIndex=(i+j)/2; m~w[~flgZ  
file://swap A9[ F  
SortUtil.swap(data,pivotIndex,j); R#s )r  
NyaQI<5D  
int k=partition(data,i-1,j,data[j]); >Ifr [  
SortUtil.swap(data,k,j); I:E`PZ  
if((k-i)>1) quickSort(data,i,k-1); MH =%-S   
if((j-k)>1) quickSort(data,k+1,j); FDv<\2+ c  
X1:V<,}"  
} a Fl;BhM  
/** k6;?)~.  
* @param data a H yx_B  
* @param i Hf%@3X  
* @param j k)i3   
* @return W 6^5YH%  
*/ jqz ux[6{  
private int partition(int[] data, int l, int r,int pivot) { pD8+ 4;A  
do{ ~jWn4 \  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); @CNi{. RX  
SortUtil.swap(data,l,r); \J4L:.`qS  
} l?\jB\,  
while(l SortUtil.swap(data,l,r); pg6cF  
return l; S~<$H y*kh  
} aJSO4W)P  
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} L s G\OG  
kAKK bmE  
改进后的快速排序: d .[8c=$  
#?RU;1)Cw  
package org.rut.util.algorithm.support; 2\R'@L*  
_1!7V3|^  
import org.rut.util.algorithm.SortUtil; xn?a. 3b'  
m1j*mtu  
/** QpF;:YX^3  
* @author treeroot vXev$x=w-  
* @since 2006-2-2 2d>z1%'  
* @version 1.0 H(H<z,$}T  
*/ Oylf<&knF\  
public class ImprovedQuickSort implements SortUtil.Sort { M#ZcY  
#9=Vg  
private static int MAX_STACK_SIZE=4096; '%>=ZhO  
private static int THRESHOLD=10; W4 t;{b  
/* (non-Javadoc) 2_)\a(.Qu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {WJm  
*/ G5{T5#  
public void sort(int[] data) { xv46r=>  
int[] stack=new int[MAX_STACK_SIZE]; O8f?; ]  
m\;R2"H%  
int top=-1; l(yZO$  
int pivot; adlV!k7RG  
int pivotIndex,l,r; r^2p*nr}  
"N;`1ce  
stack[++top]=0; BIH-"vTy  
stack[++top]=data.length-1; O6@j &*jS  
,1hxw<sNR  
while(top>0){ f@6QvkIa  
int j=stack[top--]; e*sfPHt  
int i=stack[top--]; n#mA/H;wV  
=WyDp97@+  
pivotIndex=(i+j)/2; y$;/Vm_'  
pivot=data[pivotIndex]; V[mT<Lc  
2v:]tj  
SortUtil.swap(data,pivotIndex,j); P i=+/}  
@<,X0S  
file://partition x-XD.qh7Hr  
l=i-1; $5 >e  
r=j; },uF 4M.K  
do{ +20G>y=+  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); #+JG(^%B  
SortUtil.swap(data,l,r); 4d"r^y'  
} 1v#%Ei$6`t  
while(l SortUtil.swap(data,l,r); \ S_Ou   
SortUtil.swap(data,l,j); G3t xj  
}#3V+X  
if((l-i)>THRESHOLD){ B)$| vK=  
stack[++top]=i; #HYr0Tw6`  
stack[++top]=l-1; 2{D{sa  
} hC:n5]K  
if((j-l)>THRESHOLD){  JR'  
stack[++top]=l+1; q~ tz? T_  
stack[++top]=j; 88Ey12$  
} 8."]//V  
xP_cQwm`1  
} Y21g{$~Q{  
file://new InsertSort().sort(data); AW%50V  
insertSort(data); [<7@{;r  
} 0mpX)S  
/** #akpXdXs  
* @param data "33Fv9C#bK  
*/ 0Vj4+2?L5;  
private void insertSort(int[] data) { D{!6Y*d6&s  
int temp; 'QJ:`)z  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 90Pl$#cb2  
} dMPc:tJT  
} ,Z aRy$?  
} {SOr#{1z*  
<5d ~P/,  
} FO+Zue.RS  
`-.%^eIp  
归并排序: svsqg{9z  
-#7'r<I9@  
package org.rut.util.algorithm.support; LuNc, n%  
E{`kaWmC&~  
import org.rut.util.algorithm.SortUtil; j_/>A=OD  
*lYVY) L  
/** -^K"ZP1  
* @author treeroot ^"2i   
* @since 2006-2-2 ~Uu4=  
* @version 1.0 e%@'5k\SK  
*/ ~Uj=^leYO  
public class MergeSort implements SortUtil.Sort{ ;m0~L=w  
:Hn6b$Vy8  
/* (non-Javadoc) Ut*`:]la  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tankR9(o  
*/ u$h 4lIl  
public void sort(int[] data) { QaS1Dh  
int[] temp=new int[data.length]; x%s-+&  
mergeSort(data,temp,0,data.length-1); F7 5#*  
} ?e` ^P   
rTM}})81  
private void mergeSort(int[] data,int[] temp,int l,int r){ *7:>EP  
int mid=(l+r)/2; N c1"g1JR  
if(l==r) return ; >/g#lS 5  
mergeSort(data,temp,l,mid); +"x,x  
mergeSort(data,temp,mid+1,r); Z.c'Hs+;  
for(int i=l;i<=r;i++){ !-ok"k0,u  
temp=data; 6 rh5h:  
} \"qY"V  
int i1=l; Vl5`U'^qx  
int i2=mid+1; b v G/|U  
for(int cur=l;cur<=r;cur++){ T m,b,hi$  
if(i1==mid+1) 2- &k^Gl!:  
data[cur]=temp[i2++]; <x@}01 ~  
else if(i2>r) YO#M/%^j  
data[cur]=temp[i1++]; =w;F<M|Y  
else if(temp[i1] data[cur]=temp[i1++]; pyH:#5  
else O&vVv _zh  
data[cur]=temp[i2++]; !_"@^?,q  
} 9l|@v=gw.  
} 6TYY UM"&  
xRJ\E }/7  
} M.Y~1c4f  
S\LkL]qx  
改进后的归并排序: ^.1)};i  
={_C&57N1  
package org.rut.util.algorithm.support; !\"EFVH  
 0bz'&  
import org.rut.util.algorithm.SortUtil; ?@BTGUK"C  
wi;Br[d  
/** }]e-{C}  
* @author treeroot ]"J~:{, d  
* @since 2006-2-2 rk&IlAE  
* @version 1.0 M V<^!W  
*/ wL;l Q&  
public class ImprovedMergeSort implements SortUtil.Sort { "*($cQ$v  
)n+Lo&C<  
private static final int THRESHOLD = 10; E4xj?m^(y=  
|P[w==AAf  
/* ,eOB(?Ku  
* (non-Javadoc) .)RzT9sg  
* vo`2\R.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 05z,b]>l  
*/ uPhK3nCGo  
public void sort(int[] data) { t,,k  
int[] temp=new int[data.length]; 6tXq:  
mergeSort(data,temp,0,data.length-1); -!q :p&c  
} x8wD0D  
0Z~p%C<LW  
private void mergeSort(int[] data, int[] temp, int l, int r) { .}^g!jm~h  
int i, j, k; 'w!Cn>  
int mid = (l + r) / 2; 8?J&`e/  
if (l == r) >go,K{cK6  
return; 7"aN#;&  
if ((mid - l) >= THRESHOLD) 4\y/'`xm)6  
mergeSort(data, temp, l, mid); 2w59^"<,  
else mlixIW2  
insertSort(data, l, mid - l + 1); ?a8^1:  
if ((r - mid) > THRESHOLD) <d,b'<z s  
mergeSort(data, temp, mid + 1, r); LwrUQ)  
else cFaaLUZk  
insertSort(data, mid + 1, r - mid); Jzj1w}?H  
M1 :uJkO.  
for (i = l; i <= mid; i++) { b8~Bazk  
temp = data; C3*gn}[  
} I2TaT(e\  
for (j = 1; j <= r - mid; j++) { d_CKP"TA  
temp[r - j + 1] = data[j + mid]; 0>C T=(A  
} 0C1pt5K  
int a = temp[l]; o4j[p3$  
int b = temp[r]; cimp/n"  
for (i = l, j = r, k = l; k <= r; k++) { %{ABaeb]  
if (a < b) { d^RxQuA  
data[k] = temp[i++]; IHe/xQ@  
a = temp; $8;R[SU6Y  
} else { `Zf^E >)  
data[k] = temp[j--]; Kh,V.+7k  
b = temp[j]; J]v%q,"  
} IzsphBI  
} }x@2]juJ  
} txW{7+,  
Q?e*4ba  
/** (0j}-iaQEZ  
* @param data s@9vY\5[9  
* @param l }3o|EXx=  
* @param i W"zab  
*/ Id'X*U7Q  
private void insertSort(int[] data, int start, int len) { PfreAEv,  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 5i> $]*o  
} b@rVo;  
} 9  TvV=  
} -}=i 04^  
} ,u!*2cWN  
G;&-\0>W  
堆排序: DBPRGQ  
y<HO:kZ8`  
package org.rut.util.algorithm.support; >_e]C}QUr  
>*]Hq.&8  
import org.rut.util.algorithm.SortUtil; WP?TX b`5  
kgnmGuka  
/** ?!9 )q.bW  
* @author treeroot yOphx07 (  
* @since 2006-2-2 !u_Y7i3^  
* @version 1.0 }lh I\q  
*/ eCN })An  
public class HeapSort implements SortUtil.Sort{ =+ytTQc*ot  
f47Od-\-  
/* (non-Javadoc) |K6REkzr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #.it]Nv{  
*/ AB F"~=aL  
public void sort(int[] data) { ko Z  
MaxHeap h=new MaxHeap(); ,RJtm%w  
h.init(data); /a^1_q-bX  
for(int i=0;i h.remove(); gXYI\.  
System.arraycopy(h.queue,1,data,0,data.length); T.@aep\"  
} WX=Jl<  
'$|[R98  
private static class MaxHeap{ &{>cZh}\  
'SCidN(n  
void init(int[] data){ WOQP$D9  
this.queue=new int[data.length+1]; Pf|siC^;s~  
for(int i=0;i queue[++size]=data; QrfG^GID  
fixUp(size); 'qjeXqGH$  
} p89wNSMl[  
} m1),;RsH  
"]z-: \ V  
private int size=0; O$IEn/%+  
F{EnOr`,m=  
private int[] queue; \]=7!RQ\  
kB/D!1 "  
public int get() { CZ(/=3,3n  
return queue[1]; & @s!<9$W  
} KHgBo}6  
4G$|Rx[{,  
public void remove() { ]3VI|f$$  
SortUtil.swap(queue,1,size--); <1FC%f/  
fixDown(1); G]fRk^~  
} 29!q!g|  
file://fixdown ? %`@ub$  
private void fixDown(int k) { X=hYB}}nu  
int j; BDq%'~/^  
while ((j = k << 1) <= size) { Fb^:V4<T  
if (j < size %26amp;%26amp; queue[j] j++; RnhL< Ywu  
if (queue[k]>queue[j]) file://不用交换 ,_yh z0.  
break; kD*2~Z?;  
SortUtil.swap(queue,j,k); Ys@}3\Mc  
k = j; Pm lx8@D  
} nX(+s*Y+w  
} %;e/7`>Ma  
private void fixUp(int k) { Bm"KOr$}-  
while (k > 1) { p /#$io  
int j = k >> 1; Rniq(FA x  
if (queue[j]>queue[k]) rypTKT|U;  
break; {jYOs l  
SortUtil.swap(queue,j,k); s0DGC  
k = j; jJuW-(/4[  
} $/.zm; D  
} lD"(MQV@0  
sYjpU  
} O>^C4c!  
P5 K' p5}#  
} R,F[XI+=N  
q>mE< (-M  
SortUtil: 0BH_'ZW  
t*>R`,j  
package org.rut.util.algorithm; enp)-nS0  
} w 5l  
import org.rut.util.algorithm.support.BubbleSort; ?RK]FP"A  
import org.rut.util.algorithm.support.HeapSort; HRiL.DS  
import org.rut.util.algorithm.support.ImprovedMergeSort; H2um|6>  
import org.rut.util.algorithm.support.ImprovedQuickSort; 7Garnd b  
import org.rut.util.algorithm.support.InsertSort; G`\f  
import org.rut.util.algorithm.support.MergeSort; Xb{ [c+.  
import org.rut.util.algorithm.support.QuickSort; ^j" .  
import org.rut.util.algorithm.support.SelectionSort; L5#P[cHzz  
import org.rut.util.algorithm.support.ShellSort; E_8\f_%wK  
]@uE #a:[  
/** |g #K]v  
* @author treeroot 7PANtCFb&  
* @since 2006-2-2 4g : >[q  
* @version 1.0 GlbySD@  
*/ dHK`eS$sb  
public class SortUtil { $:  ]o]a  
public final static int INSERT = 1; FI3)i>CnW  
public final static int BUBBLE = 2; 4$*%gL;f^  
public final static int SELECTION = 3; &4b&X0pU  
public final static int SHELL = 4; /%&2HDA)  
public final static int QUICK = 5; G8r``{C!  
public final static int IMPROVED_QUICK = 6; $)RNKMZC}A  
public final static int MERGE = 7; =,Dqqf  
public final static int IMPROVED_MERGE = 8; WAn~ +=Ax  
public final static int HEAP = 9; B>GE 9y5  
q|Qk2M  
public static void sort(int[] data) { du)~kU>l  
sort(data, IMPROVED_QUICK); jBU4F~1y  
} P@,nA41,j  
private static String[] name={ KuMF^0V%c  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" |1b_3?e  
}; &|!7Z4N  
pek%08VSEU  
private static Sort[] impl=new Sort[]{ wi4=OU1L)a  
new InsertSort(), 1RK=,Wx  
new BubbleSort(), ?r?jl;A&  
new SelectionSort(), UN zlN  
new ShellSort(), -5T=:2M  
new QuickSort(), :_t}QP"  
new ImprovedQuickSort(), *e-A6S h  
new MergeSort(), JaK}|  
new ImprovedMergeSort(), m < 3Ao^I+  
new HeapSort() -u? S=h}  
}; !!Aj<*%  
|7X:TfJ  
public static String toString(int algorithm){ #Sa27$&.>  
return name[algorithm-1]; OtGb<v<_H  
} ^NX"sM0g  
/Wy.>YC|  
public static void sort(int[] data, int algorithm) { VY)9|JJCO  
impl[algorithm-1].sort(data); ]R=,5kK3  
} mExVYp h  
5g9; +}X;  
public static interface Sort { RLSc+kDH_  
public void sort(int[] data); BRk0CLr5  
} !OT-b>*w  
lKlU-4  
public static void swap(int[] data, int i, int j) { PSPmO'C+  
int temp = data; wlEdt1G  
data = data[j]; \[jq4`\$  
data[j] = temp; D5:{fWVsV/  
} TpHfS]W-P  
} s%2v3eb  
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3+5=?,请输入中文答案:八 正确答案:八