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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。 0^.q5#A2  
插入排序:  Pg`^EJ+  
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package org.rut.util.algorithm.support; &Zf@vD  
^@6eN]  
import org.rut.util.algorithm.SortUtil; s6qe5[  
/**  1 ft. ZJ  
* @author treeroot 5Wn6a$^  
* @since 2006-2-2 i G<|3I  
* @version 1.0 js>6Du  
*/ d 5Il0sG  
public class InsertSort implements SortUtil.Sort{ ?"L>jr(  
9 /9,[A  
/* (non-Javadoc) Jcy`:C\Ay  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =P5SFMPN  
*/ z\;kjI  
public void sort(int[] data) { (V |P6C  
int temp; /]YK:7*98  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); l]%|w]i\  
} //WgK{Mt  
} |o+vpy  
} mhcJ0\@_  
eqLETo@} *  
} ntjUnd&v\  
+[cm  
冒泡排序: oiklRf  
SBYRN##n_  
package org.rut.util.algorithm.support; /R^!~J50  
s$RymM  
import org.rut.util.algorithm.SortUtil; 6jKM,%l  
3Hq0\Y"Y  
/** n:7=z0 s  
* @author treeroot 3lKIEPf6r  
* @since 2006-2-2 ~)()PO  
* @version 1.0 )hn,rmn (P  
*/ ,@<-h* m  
public class BubbleSort implements SortUtil.Sort{ )`g[k" yB3  
d`^@/1tO  
/* (non-Javadoc) smWA~Aq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ir]b. 6B  
*/ Y\j &84  
public void sort(int[] data) { /0(4wZe~?  
int temp; XbHcd8N T  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Bw{W-&$o  
if(data[j] SortUtil.swap(data,j,j-1); E6n;_{Se/S  
} <@Ew-JU  
} ?lbX.+  
} Gk!v-h9cq  
} ;7qk9rz4  
k5<lkC2z  
} {VI%]n{M  
]H.+=V;1  
选择排序: y_J{+  
TN l$P~X>  
package org.rut.util.algorithm.support; GifD>c |z  
]bRu8kn  
import org.rut.util.algorithm.SortUtil; LxMOs Nv  
bG\1<:6B  
/** {0e5<"i  
* @author treeroot !vG._7lPp  
* @since 2006-2-2 >.B+xn =  
* @version 1.0 6.ap^9AD  
*/ n+xM))  
public class SelectionSort implements SortUtil.Sort { mv + .5X  
SLBKXj|  
/* !lHsJ)t  
* (non-Javadoc) OxqP:kM  
* W}(dhgf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `UeF3~)>E  
*/ O" T1=4  
public void sort(int[] data) { 6C)OO"Bc  
int temp; 76c}Rk^  
for (int i = 0; i < data.length; i++) { S~m* t i(  
int lowIndex = i; }P^n /  
for (int j = data.length - 1; j > i; j--) { /oWB7l&  
if (data[j] < data[lowIndex]) { p-ry{"XA  
lowIndex = j; ]QpR>b=[j  
} :?lSa6de  
} Wlt shZo  
SortUtil.swap(data,i,lowIndex); C?b Mj[$  
} !(+?\+U lE  
} e _,_:|t  
L9G=+T9  
} 1tg   
wu s]  
Shell排序: 3fBq~Q  
`M\L 6o  
package org.rut.util.algorithm.support; J| 3CG;+  
bEPXNN  
import org.rut.util.algorithm.SortUtil; s'/ug  
64zO%F*  
/** D4`7,JC}<  
* @author treeroot  vlE#z  
* @since 2006-2-2 $|A vT;4  
* @version 1.0 O:D`6U+0  
*/ ULsz<Hj  
public class ShellSort implements SortUtil.Sort{ ~PS%^zxyn  
Oi7:J> [  
/* (non-Javadoc) M8 ++JI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F2+lwycY  
*/ NH|v`rO  
public void sort(int[] data) { ysvn*9h+&  
for(int i=data.length/2;i>2;i/=2){ >2N` l  
for(int j=0;j insertSort(data,j,i); <$ '#@jW  
} l1YyZ^Z  
} MLL2V`vBT  
insertSort(data,0,1); n) `4*d$`  
} 6s>PZh  
Qza[~6  
/** ;9b?[G  
* @param data _*&<hAZj  
* @param j qB"y'UW8  
* @param i +>/ Q+nh  
*/ ]_#[o S  
private void insertSort(int[] data, int start, int inc) { GVFD_;j'  
int temp; EEF}Wf$f  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); W*VQ"CW{^]  
} >N44&W  
} !74*APPHR  
} 8vnU!r  
g[!sGa &  
} '?Hy"5gUA  
K@ W~  
快速排序: IgSe%B  
I7]45pF  
package org.rut.util.algorithm.support; mVk:[ }l6  
a#KxjVM  
import org.rut.util.algorithm.SortUtil; wwE9|'Ok  
/&vUi7'  
/** o1YhYA  
* @author treeroot /n(0nU[  
* @since 2006-2-2 MQp1j:CK  
* @version 1.0 7dxY07 yu  
*/ Z;lE-`Z*(F  
public class QuickSort implements SortUtil.Sort{ J]$%1Y  
{"s9A&  
/* (non-Javadoc) Y$Fbi2A4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jj.)$|&#`  
*/ d0 |Q1R+3  
public void sort(int[] data) { D*_ F@}=  
quickSort(data,0,data.length-1); /l@7MxE  
} Jg: Uv6eN+  
private void quickSort(int[] data,int i,int j){ $g 5pKk  
int pivotIndex=(i+j)/2; Rm6<"SLV  
file://swap gl00$}C  
SortUtil.swap(data,pivotIndex,j); _U'edK]R  
8=t?rA  
int k=partition(data,i-1,j,data[j]); qAkx52v6  
SortUtil.swap(data,k,j); _es>G'S  
if((k-i)>1) quickSort(data,i,k-1); Cf8(J k`v|  
if((j-k)>1) quickSort(data,k+1,j); YW>|gE  
4dl?US[-  
} Jd/ 5Kx  
/** MI<hShc\  
* @param data )V~<8/)  
* @param i DR^mT$  
* @param j FL0[V,  
* @return *}3~8fu{  
*/ @4hxGk=  
private int partition(int[] data, int l, int r,int pivot) { 7;c{lQOj}  
do{ ^8E/I]-  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 'X{7b <  
SortUtil.swap(data,l,r); awo=%vJ&  
} b(K.p?bt  
while(l SortUtil.swap(data,l,r); 3{~h Rd  
return l; (r:WG!I,  
} [Fj h  
; N!K/[p=  
} k&@JF@_TI  
h&.9Q{D  
改进后的快速排序: vk.Y2 :  
N4'b]:`n  
package org.rut.util.algorithm.support; vy6NH5Q  
>0B [  
import org.rut.util.algorithm.SortUtil; p8o%H-Xk  
}?8KFe7U  
/** M[HPHNsA&  
* @author treeroot $ 'HiNP {c  
* @since 2006-2-2 h4!$,%"''  
* @version 1.0 ;%Jp@'46  
*/ {/ZB>l@D>8  
public class ImprovedQuickSort implements SortUtil.Sort { PDM>6U  
Q >)?_O(  
private static int MAX_STACK_SIZE=4096; 1*G7Uh@K}  
private static int THRESHOLD=10; 7ugmZO}lL  
/* (non-Javadoc) r'w5i1C+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b&V=X{V4  
*/ *Cj]j-  
public void sort(int[] data) { `Fu|50_@V  
int[] stack=new int[MAX_STACK_SIZE]; Y~gpiL3u  
vAU^<$D27  
int top=-1; >TwOL  
int pivot; eBtkTWx5[/  
int pivotIndex,l,r; Oj~k1+*  
X!nI{PE  
stack[++top]=0; I3s'44  
stack[++top]=data.length-1; *)g*5kKN  
]!0 BMZmf  
while(top>0){ st'Y j  
int j=stack[top--]; ZVgR7+`]#  
int i=stack[top--]; p;X[_h  
<N+l"Re#]  
pivotIndex=(i+j)/2; ~"+[VE5  
pivot=data[pivotIndex]; c-z=(Z  
@DY0Lz;  
SortUtil.swap(data,pivotIndex,j); 32YE%  
{tF=c0Z  
file://partition e7pN9tXGf  
l=i-1; mpK|I|-   
r=j; t[)z/[ m  
do{ x8tRa0-q  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); \MK)dj5uUJ  
SortUtil.swap(data,l,r); .#rI9op  
} 'HPw5 L  
while(l SortUtil.swap(data,l,r); z}OY'}sk8  
SortUtil.swap(data,l,j); &!KJrQ  
Wb/@~!+i`  
if((l-i)>THRESHOLD){ rx|/]NE;  
stack[++top]=i; JnV$)EYi  
stack[++top]=l-1; ",Ek| z  
}  //K]zu  
if((j-l)>THRESHOLD){ !Z<Z"R/  
stack[++top]=l+1; sfa T`q  
stack[++top]=j; ~O |j*T  
} +- c#UO>  
qt/"$6]%  
} /xj'Pq((}p  
file://new InsertSort().sort(data); y)Ip\.KV\  
insertSort(data); E5-8tHV   
} 'xr\\Cd9s  
/** 1[u{3lQ  
* @param data $5%tGFh  
*/ !OC?3W:^_  
private void insertSort(int[] data) { \'BKI;  
int temp; qd!$nr  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); AUzJ:([V  
} q'",70"\  
} bZERh:%o  
} PN+,M50;1  
&{ntx~Eq  
} };29'_.."x  
Kze\|yJ  
归并排序: z4H!b+   
JFR,QUT  
package org.rut.util.algorithm.support; TS-m^Y'R  
mY dU`j  
import org.rut.util.algorithm.SortUtil; G4=%<+  
_aa3Qw x  
/** !i#;P9K  
* @author treeroot @*A(#U8p3  
* @since 2006-2-2 O_(J',++  
* @version 1.0 )k0bP1oGS  
*/ /HI#8  
public class MergeSort implements SortUtil.Sort{ SYa!IL-B  
}[D[ZLv  
/* (non-Javadoc) |Z#) 1K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3U1xKF  
*/ VUagZ 7p  
public void sort(int[] data) { sN^R Z0!>  
int[] temp=new int[data.length]; 'X@j  
mergeSort(data,temp,0,data.length-1); mbJ#-^}V  
} VEE:Z^U!  
j"}alS`-  
private void mergeSort(int[] data,int[] temp,int l,int r){ 7QQ1oPV  
int mid=(l+r)/2; ~`8`kk8  
if(l==r) return ; ,i,f1XJ|  
mergeSort(data,temp,l,mid); aMh2[I  
mergeSort(data,temp,mid+1,r); 1UxRN7  
for(int i=l;i<=r;i++){ > YN<~z-  
temp=data; 1u)I}"{W>  
} b3y@!_'c  
int i1=l; PNg,bcl  
int i2=mid+1; lq1pgM?Kf  
for(int cur=l;cur<=r;cur++){ V..m2nQj  
if(i1==mid+1) 7}TjOWC  
data[cur]=temp[i2++]; EQu M|4$ix  
else if(i2>r) |CStw"Fog  
data[cur]=temp[i1++]; \>:(++g  
else if(temp[i1] data[cur]=temp[i1++]; k@KX=mG<  
else rs 7R5 F  
data[cur]=temp[i2++]; A%%WPBk{O  
} zx0{cNPK5  
} a8A8?:  
{9_CH<$W%U  
} ]U'KYrh  
DQKhR sC  
改进后的归并排序: LD]XN'?"W  
J&{E  
package org.rut.util.algorithm.support;  Ur]5AJ  
tw\/1wa.  
import org.rut.util.algorithm.SortUtil; olQ;XTa01F  
!3?HpR/nV  
/** YuLW]Q?v  
* @author treeroot Eh8.S)E  
* @since 2006-2-2 LxsB.jb-  
* @version 1.0 Ed_A#@V  
*/ #{i\t E  
public class ImprovedMergeSort implements SortUtil.Sort { Tw-gM-m;  
PlTY^N6Hn  
private static final int THRESHOLD = 10; OW1[Y-o[  
XZIj' a0d  
/* Gi Zy C  
* (non-Javadoc) 70*Y4'u }A  
* GZ*cV3Y`&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $I>.w4G}  
*/ Sf lHSMFw  
public void sort(int[] data) { b_cD >A  
int[] temp=new int[data.length]; <:>a51HBX  
mergeSort(data,temp,0,data.length-1); Jr 9\j3J{  
} 6S<J'9sE  
[ V/*{Z  
private void mergeSort(int[] data, int[] temp, int l, int r) { b.;F)(  
int i, j, k; ks 3<zW(  
int mid = (l + r) / 2; %3'80u6BCJ  
if (l == r) e"[o2=v;5  
return; A GS?<6W-  
if ((mid - l) >= THRESHOLD) n#bC ,  
mergeSort(data, temp, l, mid); TJ2$ Z  
else N[ E t  
insertSort(data, l, mid - l + 1); 80 i<Ij8J  
if ((r - mid) > THRESHOLD) ndW? ?wiM  
mergeSort(data, temp, mid + 1, r); z9'ME   
else ]NG`MZ  
insertSort(data, mid + 1, r - mid); <E!M<!h  
? vk;b!  
for (i = l; i <= mid; i++) { 3QU<vdtr  
temp = data; O62H4oT  
} V. \do"m  
for (j = 1; j <= r - mid; j++) { iHWl%]7sN  
temp[r - j + 1] = data[j + mid]; A$[@AY$MI  
} F0+u#/#  
int a = temp[l]; Z5_U D  
int b = temp[r]; DHgEhf]  
for (i = l, j = r, k = l; k <= r; k++) { qZCA16  
if (a < b) { ZIkXy*<(  
data[k] = temp[i++]; |V%Qp5 XJ  
a = temp; 6'+3""\  
} else { Y2QlK1.8V  
data[k] = temp[j--]; [p[Kpunr{l  
b = temp[j]; ~48Uch\LG:  
} <gQw4  
} 9m%[ y1v0  
} b2r@vZ]D  
[bH6>{3u  
/**  K7 U`  
* @param data D~U 4K-  
* @param l 0bS\VUB(  
* @param i N3 07lGb  
*/ :74)nbS  
private void insertSort(int[] data, int start, int len) { .KXpB7:  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); oG3>lqBwD2  
} k0!b@ c  
} Mm+_>   
} 50Pz+:  
} Q V4{=1A  
Et4gRS)\  
堆排序: >Vn;1|w  
'@ (WT~g  
package org.rut.util.algorithm.support; Ef:.)!;jy  
7b \HbgZ  
import org.rut.util.algorithm.SortUtil; aXhgzI5]  
rpQB# Pz  
/** 11Pm lzy  
* @author treeroot mJ)o-BV  
* @since 2006-2-2 j%#n}H  
* @version 1.0 <p-R{}8  
*/ E+]gC  
public class HeapSort implements SortUtil.Sort{ `N]!-=o  
u-f_,],p  
/* (non-Javadoc) al(t-3`<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E[)`+:G]  
*/ )$]_;JFr  
public void sort(int[] data) { uIiE,.Uu}  
MaxHeap h=new MaxHeap(); v<HhB.t.  
h.init(data); {^1D|y  
for(int i=0;i h.remove(); \%K< S  
System.arraycopy(h.queue,1,data,0,data.length); #\GWYWkR  
} E#Smi507p  
0 x4p!5  
private static class MaxHeap{ $*\[I{Zau}  
jyb/aov  
void init(int[] data){ )F8G q,  
this.queue=new int[data.length+1]; WIa4!\Ky!  
for(int i=0;i queue[++size]=data; \|L ~#{a  
fixUp(size); vxzh|uF  
} TG=) KS  
} `lRZQ:27X  
^%VMp>s  
private int size=0; *[) b}?  
{AoH  
private int[] queue; \/xWsbG\  
f-E]!\Pg  
public int get() { :-fCyF)EI  
return queue[1]; w[S2 ] <  
} kid3@  
BlF>TI%2  
public void remove() { N2 wBH+3w  
SortUtil.swap(queue,1,size--); "M3R}<Vt  
fixDown(1); uosFpa  
} D'$ki[{,  
file://fixdown vSb$gl5H  
private void fixDown(int k) { !iN=py  
int j; 4onRO!G,  
while ((j = k << 1) <= size) { w4\b^iJz  
if (j < size %26amp;%26amp; queue[j] j++; f R$E*Jd  
if (queue[k]>queue[j]) file://不用交换 /. k4Y  
break; d3v5^5kU  
SortUtil.swap(queue,j,k); \tc 4DS  
k = j; suC]  
} _VLc1svv  
} )$p<BLU  
private void fixUp(int k) { H~Xi;[{7  
while (k > 1) { &^=6W3RD  
int j = k >> 1; E:a_f!  
if (queue[j]>queue[k]) xc7Wk&{=  
break; wR@&C\}9  
SortUtil.swap(queue,j,k); $!h21  
k = j; <7NY.zvwk]  
} ae`*0wbv  
} rvgArFf}]  
] ?w hx &+  
} 8=Xy19<;t  
s.d }*H-o  
} OSY$qL2  
'H+H4(  
SortUtil: _WO*N9Iz  
F'^6 ra9  
package org.rut.util.algorithm; hK5BOq!y  
tgCEz%  
import org.rut.util.algorithm.support.BubbleSort; se(ZiyHp  
import org.rut.util.algorithm.support.HeapSort; D[yOFJ~p)  
import org.rut.util.algorithm.support.ImprovedMergeSort; j qfxQ  
import org.rut.util.algorithm.support.ImprovedQuickSort; .Zv@iL5  
import org.rut.util.algorithm.support.InsertSort; `dO)}}| y  
import org.rut.util.algorithm.support.MergeSort; Xxhzzm-B  
import org.rut.util.algorithm.support.QuickSort; 00X~/'!  
import org.rut.util.algorithm.support.SelectionSort; FH:^<^M  
import org.rut.util.algorithm.support.ShellSort; UIPi<_Xa  
owM3Gz%?UA  
/** biLx-F c  
* @author treeroot A Ch!D>C1  
* @since 2006-2-2 -LI^(_  
* @version 1.0 4iMo&E<  
*/ \Ld/'Z;w  
public class SortUtil { CV&+^_j'k  
public final static int INSERT = 1; s ~c_9,JK  
public final static int BUBBLE = 2; FRqJ#yd]  
public final static int SELECTION = 3; do@`(f3 g  
public final static int SHELL = 4; fG_.&!P  
public final static int QUICK = 5; MHar9)$}  
public final static int IMPROVED_QUICK = 6; cBs:7Pnp%  
public final static int MERGE = 7; COvcR.*0F  
public final static int IMPROVED_MERGE = 8; }q7rR:g  
public final static int HEAP = 9; ;;#28nV  
Y%eFXYk.  
public static void sort(int[] data) { fn(< <FA)  
sort(data, IMPROVED_QUICK); GvQKFgO6h  
} /Z`("X?_Kf  
private static String[] name={ E_k<EQ%r  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" LE#ko2#ke  
}; mhU ?N  
D_mdX9-~  
private static Sort[] impl=new Sort[]{ 8s^CE[TA  
new InsertSort(), l-4+{6lz  
new BubbleSort(), fP<Tvf  
new SelectionSort(), iG*@(  
new ShellSort(), i8t%v  
new QuickSort(), mNhVLB  
new ImprovedQuickSort(),  &ig6\&1  
new MergeSort(), 9+><:(,  
new ImprovedMergeSort(), r:.3P  
new HeapSort() b'F#Y9  
}; D&0y0lxI@  
TrA&yXXL  
public static String toString(int algorithm){ [l"|x75-  
return name[algorithm-1]; 2 |]pD  
} )\oLUuL`;  
g+'=#NS}  
public static void sort(int[] data, int algorithm) { ^U1@ hq*u  
impl[algorithm-1].sort(data); u~[=5r  
} O)v?GQRj  
Lso4Z Z;  
public static interface Sort { BOqu$f+  
public void sort(int[] data); b7;`A~{9v  
} y*ux7KO  
R)}ab{A  
public static void swap(int[] data, int i, int j) { pgNyLgN  
int temp = data; $6 46"1S  
data = data[j]; +Wgp~$o4  
data[j] = temp; YK Cd:^u  
} :g@H=W  
} , gYbi-E  
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