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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。 DSDl[;3O{s  
插入排序: 5,0 wj0l  
RKo P6LGw  
package org.rut.util.algorithm.support; PNxVW  
[/+dHW|  
import org.rut.util.algorithm.SortUtil; #U!(I#^3  
/** Kbz7  
* @author treeroot 8CnI%_Su  
* @since 2006-2-2 @R'g@+{I  
* @version 1.0 9U}MXY0  
*/ Mk'n~.mb  
public class InsertSort implements SortUtil.Sort{ \c9t]py<.h  
48~m=mI  
/* (non-Javadoc) l# !@{ <  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NDIc?kj~  
*/ p(x1D]#Z[  
public void sort(int[] data) { ^O$[Y9~*  
int temp; +]S;U&vQ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); H4y1Hpa,  
} So)KI_M  
} (v'lb!j^#  
} _Y ><ih  
0'\FrG  
} [KimY  
PO%yWns30o  
冒泡排序: g<hv7?"[  
t'=~"?T/o  
package org.rut.util.algorithm.support; CQ8o9A/  
U&w 5&W{F}  
import org.rut.util.algorithm.SortUtil; j quSR=  
w}bEufU+2  
/** ^+- L;XkeY  
* @author treeroot ?9('o\N:  
* @since 2006-2-2 /K1$_   
* @version 1.0 l9ifUh e  
*/ ,syA()  
public class BubbleSort implements SortUtil.Sort{ :d% -,v  
M[ ~2,M&H  
/* (non-Javadoc) . ~A"Wyu\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RZV1:hNN  
*/ k9_VhR|!  
public void sort(int[] data) { ;GSFQ:m[  
int temp; #a'x)$2;R|  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 2,XqslB)  
if(data[j] SortUtil.swap(data,j,j-1); ]:E! i^C`Z  
} ?CUp&L0-"  
} :S+U}Sm[  
} ?^yh5   
} uu@'02G8  
YW$x:  
} M;p q2$   
[BZ(p  
选择排序: T24#gF~  
E? m#S  
package org.rut.util.algorithm.support; 0m+5Zn  
Q 5Ghki  
import org.rut.util.algorithm.SortUtil; 0ZID @^  
bZOy~F|  
/** l>5]Wd{/  
* @author treeroot h-_0 A]  
* @since 2006-2-2 [q>i  
* @version 1.0 2$i 0yPv  
*/ l LD)i J1  
public class SelectionSort implements SortUtil.Sort { ,Y\4xg*`  
Zs$RKJ7  
/* ^$Eiz.  
* (non-Javadoc) =iK6/ y`  
* GaK_9Eg-2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E]eqvTNH  
*/ %*Z2Gef?H  
public void sort(int[] data) { }PIGj}F/  
int temp; 9}qfdbI  
for (int i = 0; i < data.length; i++) { c7nk~K[6  
int lowIndex = i; +} !F(c  
for (int j = data.length - 1; j > i; j--) { z7Rcnr;  
if (data[j] < data[lowIndex]) { ,?~UpsUx  
lowIndex = j; ,md7.z]U~  
} q/2K=BOh  
} xZ'` _x9l  
SortUtil.swap(data,i,lowIndex); SiuO99'nV  
} norc!?L  
} 7si*%><X  
N13;hB<  
} C"` 'Re5)  
NK#"qK""k  
Shell排序: %]sEt{  
]BQWA  
package org.rut.util.algorithm.support; hPXVPLm7I  
a9EI7pnq  
import org.rut.util.algorithm.SortUtil; *~<]|H5~  
7@y!R   
/** FiU;>t<)  
* @author treeroot ~ %YTJS  
* @since 2006-2-2 komxot[[  
* @version 1.0 6$vh qg}f  
*/ D)~nAkVq  
public class ShellSort implements SortUtil.Sort{ gl7vM  
"1`i]Y\'  
/* (non-Javadoc) M Xt +  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]S2[eS  
*/ gS<{ekN  
public void sort(int[] data) { pS@VLXZP  
for(int i=data.length/2;i>2;i/=2){ gK#fuQ$hH  
for(int j=0;j insertSort(data,j,i); x< y[na  
} fJ"~XTN}T  
} L+ETMk0  
insertSort(data,0,1); gZ >orZL'  
} M>H^<N}'A  
0)Xue9AS  
/** cLko  
* @param data 'S D|ObBY  
* @param j D%Jc?6/I#3  
* @param i Pc; 14M  
*/ ' /<b[  
private void insertSort(int[] data, int start, int inc) { 4k2c mM$  
int temp; yb.|7U?/x  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); rKs WS~U  
} ;3?J#e6;  
} "JLhOTPaHf  
} |VR5Q(d  
E?h2e~ ,]  
} GGQ(|?w  
=^AZx)Kwd  
快速排序: +?txGHQq  
C\ >Mt  
package org.rut.util.algorithm.support; 3k[<4-  
-5_xI)i  
import org.rut.util.algorithm.SortUtil; <9.7gwzE  
+:Q/<^Z  
/** 1;~1U9V  
* @author treeroot M j%|'dZz  
* @since 2006-2-2 1z@# 8_@  
* @version 1.0 U1!2nJ]  
*/ 7 8inh%  
public class QuickSort implements SortUtil.Sort{ eh7r'DmAR  
yr 9)ga%  
/* (non-Javadoc) ="[](X^ l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `k%#0E*H  
*/ kt0{-\ p  
public void sort(int[] data) { L.%~?T[F  
quickSort(data,0,data.length-1); ;Owu:}   
} >rS<!e%  
private void quickSort(int[] data,int i,int j){ M9jo<+  
int pivotIndex=(i+j)/2; -/2$P  
file://swap 3b[+m}UWQ  
SortUtil.swap(data,pivotIndex,j); D!$ =oK  
Vyq<T(5  
int k=partition(data,i-1,j,data[j]); ,u^0V"hJ  
SortUtil.swap(data,k,j); #|1QA3KzO  
if((k-i)>1) quickSort(data,i,k-1); =y]b|"s~2  
if((j-k)>1) quickSort(data,k+1,j); R9-JjG2v  
eh/OCzWH  
} ]S aH/$  
/** pV|?dQ  
* @param data $M<4Bqr  
* @param i WHLKf  
* @param j gN'i+mQcu  
* @return m7eIhmP  
*/ $D\l%y/C  
private int partition(int[] data, int l, int r,int pivot) { x,G6`|Hl  
do{ $$f$$  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); (U(x[Df)  
SortUtil.swap(data,l,r); r<"/P`r  
} ~teW1lMu(  
while(l SortUtil.swap(data,l,r); EA E\Xv  
return l; TaO;r=2  
} ;fME4Sp  
GE+csnA2  
} K 0H!Ds9  
J6Nw-qF  
改进后的快速排序: 'wnY>hN  
"?&bh@P&  
package org.rut.util.algorithm.support; 29657k8  
4 Wd5Goe:  
import org.rut.util.algorithm.SortUtil; Hz3X*G\5b  
!!O{ ppM  
/** %FFm[[nxI  
* @author treeroot =\7p0cq&*  
* @since 2006-2-2 }JMkM9]  
* @version 1.0 `(suRp8!  
*/ `+;oo B  
public class ImprovedQuickSort implements SortUtil.Sort { zP'pfBgbJW  
>$52B9ie  
private static int MAX_STACK_SIZE=4096; !Lug5U}  
private static int THRESHOLD=10; QLU; .&  
/* (non-Javadoc) >6834e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y]Vc}-a(h  
*/ }lpm Hvs  
public void sort(int[] data) { 2Wf qgR[3  
int[] stack=new int[MAX_STACK_SIZE]; v+bjC  
I/V#[KC  
int top=-1; q0Lt[*q3R  
int pivot; o(NyOC  
int pivotIndex,l,r; "Am0.c/  
+p6\R;_E  
stack[++top]=0; hdqls0 r  
stack[++top]=data.length-1; wO)KQ~yX  
/l%qq*Ew  
while(top>0){ l:,UN07s  
int j=stack[top--]; B{(l 5B6  
int i=stack[top--]; BQ0PV  
BXw,Rz }  
pivotIndex=(i+j)/2; )qXe`3 d5  
pivot=data[pivotIndex]; -"K:ve(K  
U)]natB  
SortUtil.swap(data,pivotIndex,j); A@AGu#W  
<X&:tZ #/  
file://partition 7lPk~0  
l=i-1; u3brb'Y+  
r=j; #e269FwN  
do{ 0-f-  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); E'6P>6l5  
SortUtil.swap(data,l,r); lS-i9U/,>  
} geSo#mV  
while(l SortUtil.swap(data,l,r); 1)Bi>X  
SortUtil.swap(data,l,j); :.df(1(RL  
e-)1K  
if((l-i)>THRESHOLD){ tSa%ZkS  
stack[++top]=i; K# < Wt5  
stack[++top]=l-1; H,` XCG  
} `~TGVa`D  
if((j-l)>THRESHOLD){ tah%jRfT&  
stack[++top]=l+1; :E`l(sI7J}  
stack[++top]=j; h l'k_<a*  
} 6ng g*kE<  
7/!C  
} SJ+-H83x  
file://new InsertSort().sort(data); :#jv4N  
insertSort(data); *3Z#r  
} @Qozud\?  
/** C,u.!g;lm  
* @param data C YKGf1;If  
*/ ur7a%NH  
private void insertSort(int[] data) { *OcptmY<  
int temp; 7gaC)j&  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); M'7x:Uw;  
} ?7a[| -  
} ovFfTP<3V  
} s>I}-=.(Q  
=ab}.dWC  
} b"bj|qF~E  
k]5L\]>y  
归并排序: sH: &OaA  
{v 0(0  
package org.rut.util.algorithm.support; H`@7o8oj1  
&H{>7q#r  
import org.rut.util.algorithm.SortUtil; O0YGjS|d  
4q8%!\A+  
/** J<@]7)|U  
* @author treeroot '8 #*U  
* @since 2006-2-2 >i E  
* @version 1.0 \vQ (  
*/ n//a;m  
public class MergeSort implements SortUtil.Sort{ )6WU&0>AU8  
WfZ#:G9  
/* (non-Javadoc) 5UyK1e))  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xGL"N1  
*/ QLl44*@  
public void sort(int[] data) { Fj4:_(%nG  
int[] temp=new int[data.length]; 1+iiiVbMH  
mergeSort(data,temp,0,data.length-1); 0X w?}  
} W#\4"'=I  
3I(H.u  
private void mergeSort(int[] data,int[] temp,int l,int r){ Kn|dnq|G  
int mid=(l+r)/2; )dcGV$4t[  
if(l==r) return ; | 'G$}]H  
mergeSort(data,temp,l,mid);  I9 m  
mergeSort(data,temp,mid+1,r); q1Mk_(4oJ  
for(int i=l;i<=r;i++){ i%w'Cs0y  
temp=data; %SXqJW^:  
} r; !us~  
int i1=l; ElxbHQj6  
int i2=mid+1; 8~&v\GDkF  
for(int cur=l;cur<=r;cur++){ Xw)+5+t"{  
if(i1==mid+1) s]OXB {M  
data[cur]=temp[i2++]; 0@;E8^pa  
else if(i2>r) IRB;Q(Z   
data[cur]=temp[i1++]; `0N/ /Q  
else if(temp[i1] data[cur]=temp[i1++]; \g/E4U .+  
else :;QLoZh^  
data[cur]=temp[i2++]; [MG:Ym).2`  
}  >TgO|mq  
} P) #rvTDRw  
p*A//^wQ  
} F{H y@7  
d[de5Xra  
改进后的归并排序: 0c) 19Ig  
YQJ_t@0C  
package org.rut.util.algorithm.support; [ ]NAV  
QH:i)v*  
import org.rut.util.algorithm.SortUtil; ~Tolz H!  
;$]R#1i44  
/** on|>"F`pb  
* @author treeroot r@aFB@   
* @since 2006-2-2 R?R6|4  
* @version 1.0 kJ >B)  
*/ gV0ZZ"M  
public class ImprovedMergeSort implements SortUtil.Sort { +dRTHz  
NDi@x"];  
private static final int THRESHOLD = 10; S5vJC-"  
mc$dR, H0  
/* Sw~<W%! ?  
* (non-Javadoc) h 9/68Gc?6  
* yL1\V7GI{[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O;r8l+  
*/ 5k@ k  
public void sort(int[] data) { F7d f  
int[] temp=new int[data.length]; 0@KBQv"v  
mergeSort(data,temp,0,data.length-1); aqlYB7  
} LT!4pD:a  
O<5bsKw'r  
private void mergeSort(int[] data, int[] temp, int l, int r) { Cv3H%g+as  
int i, j, k; SU^/qF%8  
int mid = (l + r) / 2; 4Y'qo M;  
if (l == r) @: NrC76  
return; aOOY_S E  
if ((mid - l) >= THRESHOLD) rB\UNXy  
mergeSort(data, temp, l, mid); @eul~%B{X  
else . 2WZb_ B  
insertSort(data, l, mid - l + 1); 3e"G.0vJ  
if ((r - mid) > THRESHOLD) f7L|Jc  
mergeSort(data, temp, mid + 1, r); Xc.~6nYp  
else ^,50]uX_  
insertSort(data, mid + 1, r - mid); @/~41\=e  
rYT3oqpfT  
for (i = l; i <= mid; i++) { ]yyfE7{q  
temp = data; Y,9("'bo  
} G{:L^2>  
for (j = 1; j <= r - mid; j++) { PGJ?=qXr#  
temp[r - j + 1] = data[j + mid]; cCwT0O#d  
} ,}[,]-nVx  
int a = temp[l]; ^I^k4iw 4  
int b = temp[r]; !#3R<bW`R8  
for (i = l, j = r, k = l; k <= r; k++) { *+iWB_  
if (a < b) { [@(zGb8  
data[k] = temp[i++]; I".r`$XZ  
a = temp; ( mycUU%  
} else { E: %%Dm  
data[k] = temp[j--]; 5s0H4?S  
b = temp[j]; I6UZ_H'E  
} $0WAhq  
} -y~JNDS1]  
} n1v%S"^  
3Z`oI#-x  
/** 4&?%"2  
* @param data 6(wpf^br2  
* @param l 7eY*Y"GX  
* @param i y- g5`@  
*/ \KG{ 11  
private void insertSort(int[] data, int start, int len) { p%n}a%%I  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); fO9e ;  
} O,7P6  
} k38Ds_sW6d  
} LJT+tb?K  
}  N3E=t#n  
e+S%` Sg  
堆排序: _m@QeO'yh  
DS^PHk39  
package org.rut.util.algorithm.support; hD;[}8qN{  
|d8/ZD  
import org.rut.util.algorithm.SortUtil; 2/I^:*e  
Pb!kl #  
/** 98A ;R  
* @author treeroot =3sBWDB[  
* @since 2006-2-2 &K}!R$[,:P  
* @version 1.0 2mI=V.X[&  
*/ 9c<lFZb;  
public class HeapSort implements SortUtil.Sort{ z"R-Sme  
q[r|p"TGov  
/* (non-Javadoc) ^>[Z~G($  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "=HCP,  
*/ :H6Ipa  
public void sort(int[] data) { <V9L AWeS  
MaxHeap h=new MaxHeap(); 9Y~A2C  
h.init(data); <s  $~h  
for(int i=0;i h.remove(); Riw#+#r]/  
System.arraycopy(h.queue,1,data,0,data.length); o XA*K.X<  
} U$qSMkj6RK  
7kHEY5s "  
private static class MaxHeap{ B;L~ hM  
Qb6s]QZEV  
void init(int[] data){ Hw_(Af?C  
this.queue=new int[data.length+1]; Wl}d6ZTm  
for(int i=0;i queue[++size]=data; ']>@vo4kK{  
fixUp(size); JhIgq W2  
} S's\M5  
} 7\eN 8+  
-k= 02?0p+  
private int size=0; we!}"'E;  
R9~%ORI#;  
private int[] queue; ?HttqK)  
!XQG1!|ww  
public int get() { 2BEF8o]Np  
return queue[1]; 90&ld:97  
} In5' (UHW:  
eXUXoK=T  
public void remove() { : >4{m)  
SortUtil.swap(queue,1,size--); byoDGUv  
fixDown(1); [P407Sa"  
} 6I"Q9(  
file://fixdown |lrLTI^a  
private void fixDown(int k) { Av]<[ F/  
int j; 0 @~[SXR  
while ((j = k << 1) <= size) { j!xt&t4D  
if (j < size %26amp;%26amp; queue[j] j++; H0_hQ:K   
if (queue[k]>queue[j]) file://不用交换 ?dY}xE  
break; QD-#sU]  
SortUtil.swap(queue,j,k); ojni+}>_  
k = j; H[BY(a@c  
} ,~p'p)  
} |/5j0  
private void fixUp(int k) { f =B)jYI  
while (k > 1) { |]w0ytL>(2  
int j = k >> 1; {=VauF  
if (queue[j]>queue[k]) :%~+&qS  
break; -$!`8[fM  
SortUtil.swap(queue,j,k); ayTEQS  
k = j; R&PQU/t)  
} 4Bsx[~ u&  
} 8xW_N"P.>  
icOh/G=N;  
} =Wn11JGh  
be}^}w=  
} WgF Xv@Jjt  
T1.`*,t)=  
SortUtil: u|z B\zd  
$fR[zBxA  
package org.rut.util.algorithm; L&H 4fy!>  
|f# ~#Y2v  
import org.rut.util.algorithm.support.BubbleSort; CXwDG_e  
import org.rut.util.algorithm.support.HeapSort; *W~+Nho.A  
import org.rut.util.algorithm.support.ImprovedMergeSort; ]#z^G  
import org.rut.util.algorithm.support.ImprovedQuickSort; s~W:N .}*  
import org.rut.util.algorithm.support.InsertSort; CA, &R <]  
import org.rut.util.algorithm.support.MergeSort; pn<M`,F~q  
import org.rut.util.algorithm.support.QuickSort; x >hnH{~w  
import org.rut.util.algorithm.support.SelectionSort; e p* (  
import org.rut.util.algorithm.support.ShellSort; n.Iu|,?q  
icLf; @  
/** c;C:$B7  
* @author treeroot )/A IfH  
* @since 2006-2-2 ) ,1MR=  
* @version 1.0 7+QD=j-  
*/ dOh`F~ Y)e  
public class SortUtil { EW7heIT$  
public final static int INSERT = 1; tQ=M=BPZ  
public final static int BUBBLE = 2; rf?Q# KM\W  
public final static int SELECTION = 3; f^\qDvPur  
public final static int SHELL = 4; Q5b~5a  
public final static int QUICK = 5; F?TxViL  
public final static int IMPROVED_QUICK = 6; Z6#}6Y{  
public final static int MERGE = 7;  K6d9[;F  
public final static int IMPROVED_MERGE = 8; (P&~PJH  
public final static int HEAP = 9; -*t4(wT|j  
794V(;sW,  
public static void sort(int[] data) { l( /yaZ`  
sort(data, IMPROVED_QUICK); 1$vsw  
} xcz[w}{eEq  
private static String[] name={ Op%}.9ed  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" H*BzwbM?  
}; Uv?s<  
Q$ r1beA  
private static Sort[] impl=new Sort[]{ Vw0cf;  
new InsertSort(), u?6L.^Op  
new BubbleSort(), gx~79;6  
new SelectionSort(), P0WI QG+  
new ShellSort(), # Un>g4>Rh  
new QuickSort(), :I*G tq   
new ImprovedQuickSort(), 7)aitDD  
new MergeSort(), X;25G  
new ImprovedMergeSort(), 4 qMO@E_  
new HeapSort() IMjz#|c  
}; #Ux*":  
GAG=4 g  
public static String toString(int algorithm){ QwPL y O  
return name[algorithm-1]; SUwSZ@l^|  
} (:v|(Gn/  
Qvo(2(  
public static void sort(int[] data, int algorithm) { O&h3=?O&B  
impl[algorithm-1].sort(data); 0*0]R C5?  
} c@H:?s!0R  
G Xx7/X  
public static interface Sort { )* 5R/oy,  
public void sort(int[] data); g#b[-)Qx  
} r:Uqtqxh  
/;>U0~K  
public static void swap(int[] data, int i, int j) { "|<6 bA  
int temp = data; X-,scm  
data = data[j]; 3{OY&   
data[j] = temp; xdw"JS}  
} k=">2!O/  
} 6M^P]l  
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