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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。 #|QA_5  
插入排序: r'<!wp@  
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package org.rut.util.algorithm.support; v05$"Ig  
_Wtwh0[r*  
import org.rut.util.algorithm.SortUtil; PVi0|  
/** qQwf#&  
* @author treeroot }vEMG-sxX  
* @since 2006-2-2 >aAsUL5W  
* @version 1.0 BC)1FxsGf  
*/ bMB@${i}  
public class InsertSort implements SortUtil.Sort{ ^@ Xzh:  
`PtfPt<{  
/* (non-Javadoc) Kut@z>SK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Pyp#'du>  
*/ G.~Ffk  
public void sort(int[] data) { SQ057V>'=  
int temp; 5 )z'=  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6SF29[&  
} y-uSpW  
} S@ @#L  
} U E-1p  
N (0%C?  
} Y?V.O  
X- j@#Qb  
冒泡排序: Z_4|L+i<{  
ODxCD%L  
package org.rut.util.algorithm.support; eyuQ}R  
7 &iav2q  
import org.rut.util.algorithm.SortUtil; J|u_45<  
1oI2  
/** Z4dl'v)9  
* @author treeroot pwVaSnre`  
* @since 2006-2-2 39bw,lRPV  
* @version 1.0 @2~;)*  
*/ I&f!>y?,Z  
public class BubbleSort implements SortUtil.Sort{ Eih6?Lpu  
PU-L,]K  
/* (non-Javadoc) '3=@UBs  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a(AYY<g  
*/ /<k]mY cu  
public void sort(int[] data) { m>f8RBp]'  
int temp; 0|| 5 r#  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 32p9(HQ  
if(data[j] SortUtil.swap(data,j,j-1); ,rX|_4 n*  
} ~Kt2g\BSok  
} 9vBW CCf  
} ,7)z avA  
}  V*W H  
[$@EQ]tt/  
} _Mi*Fvj  
> .K  
选择排序: lv#L+}T  
?(Xy 2%v  
package org.rut.util.algorithm.support; 3b/J  
SNC)cq+{  
import org.rut.util.algorithm.SortUtil; Jo\karpb  
8(]q/g"O  
/** i7mo89S  
* @author treeroot QsBC[7<jd-  
* @since 2006-2-2 T~ P<Gq} ,  
* @version 1.0 ^@)*voP#G  
*/ Yo\%53w/  
public class SelectionSort implements SortUtil.Sort { }J6 y NoXu  
$mxl&Qr>Q;  
/* $ncP#6  
* (non-Javadoc) XrJLlH>R4  
* ) 3ZkKv;zY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a28`)17z  
*/ U2 Cmf  
public void sort(int[] data) { QTU$mC]  
int temp; 8{)N%r  
for (int i = 0; i < data.length; i++) { ;P^}2i[q>[  
int lowIndex = i; -YS9u [   
for (int j = data.length - 1; j > i; j--) { :464~tHI[`  
if (data[j] < data[lowIndex]) { 1]"S?  
lowIndex = j; A#gy[.Bb  
} eC@b-q   
} xmejoOF  
SortUtil.swap(data,i,lowIndex); CUx-k|\  
} .ZupsS9l  
} 1-.(pA'  
4veXg/l  
} L0*f(H  
++BQ==@  
Shell排序: 2p~G][  
@2sr/gX^  
package org.rut.util.algorithm.support; 71Y3.1+  
_ Gkb[H&RZ  
import org.rut.util.algorithm.SortUtil; U.1&'U*  
v!#koqd1y.  
/** _$yS4=.  
* @author treeroot @v/ 8}n  
* @since 2006-2-2 |$[.X3i  
* @version 1.0 e\ }'i-  
*/ \)cbg#v  
public class ShellSort implements SortUtil.Sort{ {6mFI1;q  
>gDKkeLD  
/* (non-Javadoc) dB8 e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \"P$*y4Le  
*/ e"ClG/M_XS  
public void sort(int[] data) { gR wRhA/  
for(int i=data.length/2;i>2;i/=2){ lr=quWDY  
for(int j=0;j insertSort(data,j,i); !Y*O0_  
} 7!~)a  
} |Ew&.fgz  
insertSort(data,0,1); oN,9#*PVL  
} !T.yv5ge'  
zANsv9R~  
/** {(Ba  
* @param data e!w#{</8Q  
* @param j i<!1s%i}  
* @param i T/tCX[}  
*/ R#Z m[S  
private void insertSort(int[] data, int start, int inc) { 6%&DJBU!  
int temp; awSi0*d~  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); vb$i00?  
} {w ]L'0ES[  
} J"fv5{  
} A",R2d  
Ci?RuZ"  
} " t,ZO  
,D'bIk  
快速排序: @DlN;r ?Cv  
rEj Ez+wu  
package org.rut.util.algorithm.support; <-HWs@8#  
JTTI`b2l_  
import org.rut.util.algorithm.SortUtil; ^39 ?@xc@  
G%T<wKD<  
/** Bpv"qU7  
* @author treeroot gH0Rd WX  
* @since 2006-2-2 _8wT4|z5  
* @version 1.0 .K+5k`kd  
*/ X3l6b+p  
public class QuickSort implements SortUtil.Sort{ rfOrh^  
yJ!,>OQ%'  
/* (non-Javadoc) <o@__l.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8O0]hz  
*/ NZ- 57Ji  
public void sort(int[] data) { } A}Vd:#  
quickSort(data,0,data.length-1); iThf\  
} |9mGX9q  
private void quickSort(int[] data,int i,int j){ twp~#s:\z  
int pivotIndex=(i+j)/2; RA}Y$}^#'  
file://swap `rpmh7*WV  
SortUtil.swap(data,pivotIndex,j); alyA#zao|  
B \.0 5<  
int k=partition(data,i-1,j,data[j]); US&:UzI.  
SortUtil.swap(data,k,j); B~%SB/eu  
if((k-i)>1) quickSort(data,i,k-1); 9w-;d=(Q  
if((j-k)>1) quickSort(data,k+1,j); MX7$f (Hy  
VVc-Dx  
} ,PX7}//X^  
/** uC?/p1  
* @param data j^ttTq|l  
* @param i hne}G._b  
* @param j JR|P]}  
* @return LGWQBEXw  
*/ MaP-   
private int partition(int[] data, int l, int r,int pivot) { 4TcW%  
do{ tw<}7l_>Au  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Q.SqOHeJ  
SortUtil.swap(data,l,r); JiGS[tR  
} *s!T$oc  
while(l SortUtil.swap(data,l,r); WDh*8!)  
return l; DK<}q1xi  
} rR(\fX!dg  
! ;R}=  
} G.qjw]Llf  
J:\O .F#Fi  
改进后的快速排序: aK8X,1g%)  
I}\`l+  
package org.rut.util.algorithm.support; lht :%Ts$  
`91?^T;\F  
import org.rut.util.algorithm.SortUtil; l(~NpT{=V  
z[0t%]7l  
/** ($[@'?Z1  
* @author treeroot XZxzw*Y1J  
* @since 2006-2-2 Wbi12{C  
* @version 1.0 7qg. :h  
*/ 6g"qwWZp  
public class ImprovedQuickSort implements SortUtil.Sort { <4*)J9V^s=  
)NlxW5  
private static int MAX_STACK_SIZE=4096; WU6F-{M"?  
private static int THRESHOLD=10; TWU1@5?Ct  
/* (non-Javadoc) Kj+TP qXb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oi%IHX(`  
*/ ?IR+OCAA  
public void sort(int[] data) { wArzMt}[  
int[] stack=new int[MAX_STACK_SIZE]; d4LH`@SUZ-  
_p%@x:\  
int top=-1; t#7owY$^  
int pivot; ~ \ Udl  
int pivotIndex,l,r; mnM$#%q;%  
=Ct$!uun  
stack[++top]=0; V.w!]{xm  
stack[++top]=data.length-1; |L6 +e *  
VpB+|%@p  
while(top>0){ *m&(h@l  
int j=stack[top--]; jk5C2dy  
int i=stack[top--]; \5F {MBx !  
U.J/ "}5`T  
pivotIndex=(i+j)/2; ?DC;Hk<  
pivot=data[pivotIndex]; &FDWlrG g  
I_ na^s h*  
SortUtil.swap(data,pivotIndex,j); ^/7Y3n!|3  
@&2# kO~=  
file://partition 27UnH: =  
l=i-1; CjU?3Ag  
r=j; M1XzA `*  
do{ +  $/mh  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); zl$z>z)  
SortUtil.swap(data,l,r); 0y=lf+xA*  
} *"j3x} U<  
while(l SortUtil.swap(data,l,r); Oyy E0  
SortUtil.swap(data,l,j); ?I 7hbqQd  
C oO0~q  
if((l-i)>THRESHOLD){ Kk/cI6`W  
stack[++top]=i; 't3nh  
stack[++top]=l-1; <s5s<q2  
} h\*I*I8C  
if((j-l)>THRESHOLD){ }z_7?dn/  
stack[++top]=l+1; KOD%>+vG$  
stack[++top]=j; Wq*W+7=.  
} FMAt6HfU  
qZX\riR  
} vFsl]|<;8  
file://new InsertSort().sort(data); ^-K ~y  
insertSort(data);  t/a  
} t<znz6  
/** }E\u2]  
* @param data TuzH'F  
*/ ;V4f6[<]'z  
private void insertSort(int[] data) { s6_[H  
int temp; * v u  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); LZA pz}  
} "@ @Z{  
} o*s3"Ib  
} qr?RU .W  
C8 "FTH'  
} 7 JVonruaR  
X=pPkgW  
归并排序: E7|P\^}m(f  
RU,!F99'1  
package org.rut.util.algorithm.support; O-]^_LV`  
usI$  
import org.rut.util.algorithm.SortUtil; ~)iQbLI  
G!w?\-  
/** ;Y`k-R:E6A  
* @author treeroot &y.6Hiy&  
* @since 2006-2-2 )[5.*g@  
* @version 1.0 f=nVK4DuZ  
*/ ~9dAoILrl  
public class MergeSort implements SortUtil.Sort{ a9TKp$LP`  
sQ%gf  
/* (non-Javadoc) BY??X=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n; *W#c  
*/ 3+iQct[  
public void sort(int[] data) { S$i3/t  
int[] temp=new int[data.length]; ,98`tB0  
mergeSort(data,temp,0,data.length-1); vaj-|&  
} ZVz`-h B  
f}+8m .g2  
private void mergeSort(int[] data,int[] temp,int l,int r){ D2Dk7//82Y  
int mid=(l+r)/2; G:{\-R'  
if(l==r) return ; r#/Bz5Jb*  
mergeSort(data,temp,l,mid); C07U.nzh  
mergeSort(data,temp,mid+1,r); ;.b^A  
for(int i=l;i<=r;i++){ (Kaunp5_`  
temp=data; K"9V8x3Wg  
} y`-5/4  
int i1=l; CFiO+p&  
int i2=mid+1; F[==vte|  
for(int cur=l;cur<=r;cur++){ RTvzS]  
if(i1==mid+1) oHkjMqju  
data[cur]=temp[i2++]; qn~:B7f  
else if(i2>r) 5`[B:<E4  
data[cur]=temp[i1++]; ?K^~(D8(  
else if(temp[i1] data[cur]=temp[i1++]; 2^=.jML[  
else nAW`G'V#  
data[cur]=temp[i2++]; ]LZ,>v  
} I xE }v%&  
} iU a `<  
Ems0"e  
} 2~2j?\AEd.  
FK.Qj P:  
改进后的归并排序: P};GcV-  
uM('R;<^  
package org.rut.util.algorithm.support; ?FwjbG<  
Af7&;8pM  
import org.rut.util.algorithm.SortUtil; HU+zzTgI  
wT-@v,$  
/** rgXD>yu(  
* @author treeroot K^+}__;]  
* @since 2006-2-2 q. NvwJ  
* @version 1.0 ,N`D{H"F  
*/ ${)s ~[  
public class ImprovedMergeSort implements SortUtil.Sort { IRl(H_.  
+~1~f'4J  
private static final int THRESHOLD = 10; hXz@ (cF  
4+15`  
/*  L\("  
* (non-Javadoc) :Y2J7p[+  
* sn.&|)?Fi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "N*i!h  
*/ ad[oor/7|  
public void sort(int[] data) { V-TWC@Y"  
int[] temp=new int[data.length]; c9)5G+   
mergeSort(data,temp,0,data.length-1); lM-*{<B  
} 2@#`x"0  
088"7 s  
private void mergeSort(int[] data, int[] temp, int l, int r) { k>q}: J9V  
int i, j, k;  F5FzT^  
int mid = (l + r) / 2; YUsMq3^&  
if (l == r) m kHcGB!~  
return; 3Mt Alc0xp  
if ((mid - l) >= THRESHOLD) x$Tf IFy  
mergeSort(data, temp, l, mid);  = ~^  
else MJ0UZxnl  
insertSort(data, l, mid - l + 1); 7__?1n~{  
if ((r - mid) > THRESHOLD) >@c~M  
mergeSort(data, temp, mid + 1, r); _4#&!b6  
else y<A%&  
insertSort(data, mid + 1, r - mid); ;(,1pi7|  
ZP^7`q)6  
for (i = l; i <= mid; i++) { ;IX*4E'4s  
temp = data; 26<Wg7/,  
} cJ!C=J  
for (j = 1; j <= r - mid; j++) { CxRh MhvP  
temp[r - j + 1] = data[j + mid]; Y;6%pm$  
} 7O.{g  
int a = temp[l]; dw]wQ\4B  
int b = temp[r]; l9X\\uG&  
for (i = l, j = r, k = l; k <= r; k++) { T&PLvyBL  
if (a < b) { |8YP8o  
data[k] = temp[i++]; ?\$\YX%/p  
a = temp; [.`%]Z(  
} else { q^k]e{PD  
data[k] = temp[j--];  @M E .  
b = temp[j]; N_Y*Z`Xb  
} /l@h[}g+d-  
} 2>!? EIE7  
} EU"J'?  
CiSl 0  
/** Yab=p 9V;;  
* @param data ~ GW8|tw  
* @param l "~HV!(dRMC  
* @param i  ~ok i s  
*/ O9tgS@*Tv  
private void insertSort(int[] data, int start, int len) { bxA1fA;  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); @Xb>GPVe#L  
} =y kOh_M  
} C #A\Rfi  
} 5zBayJh#  
} d$(>=gzBQ  
 {!9i8T  
堆排序: wu2C!gyBo  
eX@7f!uz  
package org.rut.util.algorithm.support; J \V.J/  
3Ta<7tEM  
import org.rut.util.algorithm.SortUtil; Cq-#| +zr  
.6D9m.Q,  
/** }lzN)e  
* @author treeroot ]9}T)D f'  
* @since 2006-2-2 `bF] O"  
* @version 1.0 WDdp(<  
*/ 11Hf)]M   
public class HeapSort implements SortUtil.Sort{ ^,M&PP6  
&G"r>,HU  
/* (non-Javadoc) &RP}w%I1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \1p5$0z  
*/ f YuM`O  
public void sort(int[] data) { ^sjL@.'m$N  
MaxHeap h=new MaxHeap(); L!]~ J?)  
h.init(data); X&qa3C})  
for(int i=0;i h.remove(); a|v}L,  
System.arraycopy(h.queue,1,data,0,data.length); }lzQMT  
} K9J"Q4pEC  
 j{;RuNt  
private static class MaxHeap{ 6Q6l?!|W4  
b88Zk*  
void init(int[] data){ |_P-  
this.queue=new int[data.length+1]; .V\ M/q\Tv  
for(int i=0;i queue[++size]=data; !dW77kLTg  
fixUp(size); Hw"UJP  
} u70-HFI@  
} [8K+  zT5  
v8`)h<:W?  
private int size=0; Twj?SV  
M5Twulz/w  
private int[] queue; 'C9H6)Zq)  
oYG].PC  
public int get() { gAY%VFBP0  
return queue[1]; dTV:/QM  
} K~#wvUb  
p~sfd  
public void remove() { OZ$"P<X_"  
SortUtil.swap(queue,1,size--); +HK)A%QI  
fixDown(1); yeCR{{B/'  
} <9s=K\-  
file://fixdown f 2#9E+IQ  
private void fixDown(int k) { R "&(Ae?LR  
int j; /Lc= K<  
while ((j = k << 1) <= size) { O&:0mpRZ  
if (j < size %26amp;%26amp; queue[j] j++; VhAZncw  
if (queue[k]>queue[j]) file://不用交换 P~+?:buqc  
break; _uO#0 )l  
SortUtil.swap(queue,j,k); |@-%x.y  
k = j; i~IQlyGr.  
} B9 Dh^9?L  
} Qw$"W/&X  
private void fixUp(int k) { r $du-U  
while (k > 1) { $J |oVVct  
int j = k >> 1; D k'EKT-  
if (queue[j]>queue[k]) xmDX1sL**  
break; Ohm>^N;  
SortUtil.swap(queue,j,k); >q&Q4E0  
k = j; (Jw[}&+  
} !k&~|_$0@  
} m\lSBy6  
,qRSB>5c  
} 3"gifE  
)r2$/QF9  
} _e.b #{=9  
(jD..qMs#  
SortUtil: a.5s5g)8  
T2wn!N?r  
package org.rut.util.algorithm; K;f'&9-+i,  
?;,Al`/^  
import org.rut.util.algorithm.support.BubbleSort; '^l/e: (H3  
import org.rut.util.algorithm.support.HeapSort; ]kmOX  
import org.rut.util.algorithm.support.ImprovedMergeSort; gkpNT)  
import org.rut.util.algorithm.support.ImprovedQuickSort; wYf=(w \c  
import org.rut.util.algorithm.support.InsertSort; ] %*970  
import org.rut.util.algorithm.support.MergeSort; W RAW%?$  
import org.rut.util.algorithm.support.QuickSort; (%>Sln5hq  
import org.rut.util.algorithm.support.SelectionSort; NEO~|B*oDU  
import org.rut.util.algorithm.support.ShellSort; `~(C\+gUp  
S iw9_c  
/** r2T?LO0N{  
* @author treeroot LoG@(g&)  
* @since 2006-2-2 Yi[dS`,d  
* @version 1.0 t.pg;#  
*/ Uc0AsUu}?  
public class SortUtil { Q:~w;I  
public final static int INSERT = 1; @2_s;!K  
public final static int BUBBLE = 2; +k"dN^K]D  
public final static int SELECTION = 3; Et'C4od s  
public final static int SHELL = 4; 8mA6l0  
public final static int QUICK = 5; F$ .j|C1a  
public final static int IMPROVED_QUICK = 6; $U jSP  
public final static int MERGE = 7; 2LYd # !i  
public final static int IMPROVED_MERGE = 8; ZZC= 7FB  
public final static int HEAP = 9; dW7dMx  
E|9LUPcb  
public static void sort(int[] data) { g]xZ^M+  
sort(data, IMPROVED_QUICK); fC3IxlG  
} s/[i>`g/9  
private static String[] name={ ud:?~?j&w  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" SEchF"KJQF  
}; BHmA*3?  
W7A'5  
private static Sort[] impl=new Sort[]{ 4Sg!NPuu7&  
new InsertSort(), cM4?G gn  
new BubbleSort(), vP}K(' (  
new SelectionSort(), oQ;f`JC^  
new ShellSort(), /^[)JbgB  
new QuickSort(), H>XbqIkL@  
new ImprovedQuickSort(), %Z{J=  
new MergeSort(), ~v>w%]  
new ImprovedMergeSort(), e( ^9fg_SG  
new HeapSort() (&MSP  
}; :e@JESlLf  
8VcAtrx_  
public static String toString(int algorithm){ W? UCo6<m  
return name[algorithm-1]; lO $M6l  
} Dlj=$25  
xdo{4XY^*W  
public static void sort(int[] data, int algorithm) { ^y6Pkb P  
impl[algorithm-1].sort(data); E2*"~gL^,  
} ,.`^Wx6F  
6 qKIz{;  
public static interface Sort { \S7OC   
public void sort(int[] data); %y w*!A1  
} Sw1]]-Es  
N~>?w#?J  
public static void swap(int[] data, int i, int j) { CJKH"'u3^  
int temp = data; Z `\7B e  
data = data[j]; Br~%S?4"o  
data[j] = temp; ^/n[5@6H  
} S ,(@Q~  
} iKabo,~  
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