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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。 %_ ~[+ ~#  
插入排序: O v-I2  
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package org.rut.util.algorithm.support; h@J`:KO  
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import org.rut.util.algorithm.SortUtil; 3 *G=U  
/** 6-3l6q  
* @author treeroot _VlN Z/V  
* @since 2006-2-2 \o^+'4hq<5  
* @version 1.0 d>%_<pw  
*/ cZu:dwE  
public class InsertSort implements SortUtil.Sort{ 8.,PgS  
oVu>jO:.  
/* (non-Javadoc) pQp}HD!-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C>+UZ  
*/ Cpj_mMtu  
public void sort(int[] data) { 8[DD=[&  
int temp; /nrDU*  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); IOA{l N6  
} gQ?k}D  
} rN}^^9  
} `<K#bDU;a  
b,c vQD  
} 4_mh  
;7hf'k  
冒泡排序: MT9a1 >  
[)*fN|Hy  
package org.rut.util.algorithm.support; {>z.y1  
PXkPC%j  
import org.rut.util.algorithm.SortUtil; Xbz}pAnj  
qg>i8V  
/** lj[Bd >  
* @author treeroot 3oSQe"  
* @since 2006-2-2 +|}~6`  
* @version 1.0 &pCKz[Yf+  
*/ ^WeT3b q  
public class BubbleSort implements SortUtil.Sort{ Kg.E~  
JK1b 68n  
/* (non-Javadoc) snyx$Qx(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \F> *d!^C  
*/ HsO=%bb  
public void sort(int[] data) { ZFRKh:|  
int temp; ^Dh2_vbI  
for(int i=0;i for(int j=data.length-1;j>i;j--){ i{`>!)U  
if(data[j] SortUtil.swap(data,j,j-1); 8^^al!0K~  
} 4yknX% [  
} 7 724,+2N  
} |BXq8Erh  
} Ad"::&&Wk  
b*bR<|dTj  
} 9u:MF0:W  
6sPd")%G  
选择排序: @<};Bo'  
[iDa6mcth  
package org.rut.util.algorithm.support; "aP/214Ul  
E J 9A 4B  
import org.rut.util.algorithm.SortUtil; ]-R8W/fDn  
r}vr E ^Q  
/** 4TLh'?Xu9  
* @author treeroot {!-w|&bF  
* @since 2006-2-2 d>(dSKx  
* @version 1.0 o&>0 pc  
*/ 4gYP .h:,  
public class SelectionSort implements SortUtil.Sort { L\b$1U!i  
H(0d(c1s  
/* i1/FNem  
* (non-Javadoc) wi9fYfuv3R  
* %~6+=*(\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) js>6Du  
*/ nrZv>r  
public void sort(int[] data) { x[)S3U J  
int temp; #|'8O  
for (int i = 0; i < data.length; i++) { %2 >FSE  
int lowIndex = i; :\.v\.wm  
for (int j = data.length - 1; j > i; j--) { OnG!5b  
if (data[j] < data[lowIndex]) { #M_QSD}&  
lowIndex = j; +wQ GC  
} b?r0n]  
} %';n9M  
SortUtil.swap(data,i,lowIndex); g :O.$  
} 3 \kT#nr  
} `pLp+#1 `R  
\0b ",|"3  
} eNXpRvY  
5xRh'Jkyb  
Shell排序: wl! 'Bck=  
EK#w: "  
package org.rut.util.algorithm.support; FL`. (,  
RRV&!<l@$  
import org.rut.util.algorithm.SortUtil; ,PY<AI^59  
H9&? <j1n  
/** FCI38?`%  
* @author treeroot u<+;]8[o  
* @since 2006-2-2 PY`V]|J  
* @version 1.0 _Jx?m  
*/ .}Xkr+ +]  
public class ShellSort implements SortUtil.Sort{ 8y+Gvk:  
*gBaF/C  
/* (non-Javadoc) u_mm*o~)g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #?aR,@n  
*/ }p "HD R>  
public void sort(int[] data) { h; {?z  
for(int i=data.length/2;i>2;i/=2){ 2*Gl|@~N  
for(int j=0;j insertSort(data,j,i); (spX3n%p  
} XLM 9+L  
} S:DB%V3  
insertSort(data,0,1); 0`OqD d  
} 4}8Xoywi1  
==IL63  
/** =lVfrna  
* @param data b cOX/  
* @param j rPQ$e!m1Ee  
* @param i b5yb~;0  
*/ );=JoRQ{  
private void insertSort(int[] data, int start, int inc) { L!{^^7  
int temp; %S@XY3jZY  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 9WBDSx_(Q  
} y 5=J6a2.  
} !rrjA$P<v  
} gzw[^d  
!WDdq_n*v  
} %d*}:295  
x %$Z/  
快速排序: +K+ == mO&  
,kLeK{   
package org.rut.util.algorithm.support; &\1Dy}:  
M?]ObIM:5  
import org.rut.util.algorithm.SortUtil; } 1c5#Ym  
C?b Mj[$  
/** !(+?\+U lE  
* @author treeroot e _,_:|t  
* @since 2006-2-2 L9G=+T9  
* @version 1.0 1tg   
*/ 4 9#I  
public class QuickSort implements SortUtil.Sort{ aHb,4 wY  
sYXVSNonm  
/* (non-Javadoc) ,m0=zH4+:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0k3^+#J  
*/ v^KJU +  
public void sort(int[] data) { kV-a'"W5  
quickSort(data,0,data.length-1); R$PiF1ffj  
}  eYS  
private void quickSort(int[] data,int i,int j){ 1no$|n#  
int pivotIndex=(i+j)/2; @ '<lD*W  
file://swap =. OW sFv  
SortUtil.swap(data,pivotIndex,j); *r(iegO$  
$KtMv +m"  
int k=partition(data,i-1,j,data[j]); .t\ Yv/|`  
SortUtil.swap(data,k,j); igz&7U8gg  
if((k-i)>1) quickSort(data,i,k-1); r Cmqq/hZ  
if((j-k)>1) quickSort(data,k+1,j); c?wFEADn  
*mBn''a"*  
} na%9E8;:&v  
/** oq;}q  
* @param data sp AYb<  
* @param i ZP?](RV>xg  
* @param j hu6)GOZbv  
* @return en#W<"_"  
*/ 4?8GK  
private int partition(int[] data, int l, int r,int pivot) { XjL( V1  
do{ tjYe82  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); -Xx,"[sN\w  
SortUtil.swap(data,l,r); Be?mIwc_g  
} LgB}!OLQ  
while(l SortUtil.swap(data,l,r); @-Gf+*GZys  
return l; V8&%fxn+  
} \#~~,k 6f  
d6~wJMFl  
} l$PO!JRD  
69rVW~Z  
改进后的快速排序: $8X?|fV)  
vChkSY([  
package org.rut.util.algorithm.support; #16)7  
vE{QN<6T  
import org.rut.util.algorithm.SortUtil; %lEPFp  
YIjBKh  
/** c9DX  
* @author treeroot 6V!yfps)  
* @since 2006-2-2 E&]S No<  
* @version 1.0 :90DS_4  
*/ $g 5pKk  
public class ImprovedQuickSort implements SortUtil.Sort { Rm6<"SLV  
"PnYa)?1  
private static int MAX_STACK_SIZE=4096; ZH/|L?Q1U  
private static int THRESHOLD=10; Qb9) 1  
/* (non-Javadoc) A qE,zW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )]rGGNF*  
*/ FVL0K(V(  
public void sort(int[] data) { h&[!CtPm  
int[] stack=new int[MAX_STACK_SIZE]; )V~<8/)  
DR^mT$  
int top=-1; H| IsjCc  
int pivot; rt t?4  
int pivotIndex,l,r; 3Qn! `  
)FE'#\  
stack[++top]=0; <@e6zQG  
stack[++top]=data.length-1; 0^tF_."Y  
k|a{ |2p  
while(top>0){ vPpbm  
int j=stack[top--]; IRXpk 6|  
int i=stack[top--]; (z+[4l7  
, lT8gQ|u  
pivotIndex=(i+j)/2; :9]23'Md  
pivot=data[pivotIndex]; NIQa{R/H  
H=7dp%b"  
SortUtil.swap(data,pivotIndex,j); z_r W1?|  
rcNM,!dZ  
file://partition ^!E;+o' t  
l=i-1; :P;#Y7}Y$  
r=j; 21G] d  
do{ W:hR8 1ci  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); E$*I.i_m  
SortUtil.swap(data,l,r); &<k )W  
} F0]= z-  
while(l SortUtil.swap(data,l,r); S ^2'O7uj  
SortUtil.swap(data,l,j); ]';!r20  
9JP{F  
if((l-i)>THRESHOLD){ 6 3Kec  
stack[++top]=i; ^:LF  
stack[++top]=l-1; r'w5i1C+  
} Zo'lvOpyZ  
if((j-l)>THRESHOLD){ *Cj]j-  
stack[++top]=l+1; `Fu|50_@V  
stack[++top]=j; ,T"(97"  
} 3p$ZHH.UP  
Qa(u+  
} }+I 8l'  
file://new InsertSort().sort(data); t55CT6Se  
insertSort(data); 2-UZ|y  
} X[grV e  
/** T\. 8og  
* @param data E=HS'XKu[K  
*/ }MuXN<DDb  
private void insertSort(int[] data) { :IbrV@gN{@  
int temp; tE<L4;t  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); st'Y j  
} +1F@vag7  
} !W n'Ae9  
} ) Q~Q .  
v>7tJ[s  
} q>!T*BQ  
m <aMb  
归并排序: &A=d7ASN=  
9`-ofwr'|  
package org.rut.util.algorithm.support; ]^ZC^z;H  
2|w(d  
import org.rut.util.algorithm.SortUtil; D[:7B:i  
A3!NEFBK  
/** iTqv=  
* @author treeroot aN%t>*?Xa  
* @since 2006-2-2  YVD%GJ  
* @version 1.0 /.7x[Yc  
*/ pl|< g9  
public class MergeSort implements SortUtil.Sort{ m S!/>.1[  
+~8/7V22  
/* (non-Javadoc) YWd:Ok0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D;d 'ss;  
*/ f5mk\^  
public void sort(int[] data) { ,7 >_Lp_v  
int[] temp=new int[data.length]; _mA[^G=gY  
mergeSort(data,temp,0,data.length-1); K31Fp;K  
} -V_e=Y<J/  
>L[,.}(9  
private void mergeSort(int[] data,int[] temp,int l,int r){ QF!K$?EU[  
int mid=(l+r)/2; *l_1T4]S  
if(l==r) return ;  2Np9*[C  
mergeSort(data,temp,l,mid); 0z.`  
mergeSort(data,temp,mid+1,r); x/bO;9E%U4  
for(int i=l;i<=r;i++){ AUzJ:([V  
temp=data; q'",70"\  
} bZERh:%o  
int i1=l; PN+,M50;1  
int i2=mid+1; nLdI>c9R  
for(int cur=l;cur<=r;cur++){ @fbvu_-].  
if(i1==mid+1) r{p?aG  
data[cur]=temp[i2++]; - uliND  
else if(i2>r) )1lYfJ  
data[cur]=temp[i1++]; 0`,a@Q4  
else if(temp[i1] data[cur]=temp[i1++]; pr@8PD2%  
else *N< 22w  
data[cur]=temp[i2++]; N[dhNK"  
} }*IX34  
} n3~xiQ'  
@2kt6 W  
} :m@(S6T m  
$o {f)'.>n  
改进后的归并排序: (O /hu3  
Kgk9p`C(  
package org.rut.util.algorithm.support; |hOqz2|  
AkT_ZU>  
import org.rut.util.algorithm.SortUtil; P0}uTee  
+%'0;  
/** g&riio7lx  
* @author treeroot T~`m'4"+c  
* @since 2006-2-2 tUz!]P2BUO  
* @version 1.0 vHJ~~if  
*/ U%w ?muJW  
public class ImprovedMergeSort implements SortUtil.Sort { aMh2[I  
1UxRN7  
private static final int THRESHOLD = 10; 7&|fD{:4U  
<P g.N  
/* j~Rh_\>Q  
* (non-Javadoc) 6i{W=$ RQ  
* aHwrFkn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ms^,]Q1{  
*/ 3u+~!yz  
public void sort(int[] data) { {jggiMwo.v  
int[] temp=new int[data.length]; {IqbO>|"O_  
mergeSort(data,temp,0,data.length-1); UAUo)VVi"  
} )v0m7L v#/  
6Dw[n   
private void mergeSort(int[] data, int[] temp, int l, int r) {   7&l  
int i, j, k; .NwHr6/s*  
int mid = (l + r) / 2; b .j\=c  
if (l == r) *gVRMSrx4  
return; u_zp?Nc  
if ((mid - l) >= THRESHOLD) IjJ3CJ<  
mergeSort(data, temp, l, mid); <@@.~Qm'  
else 83)2c a  
insertSort(data, l, mid - l + 1); YujhpJ<  
if ((r - mid) > THRESHOLD) j.AAY?L  
mergeSort(data, temp, mid + 1, r); <7?MutHM-  
else H[!by)H  
insertSort(data, mid + 1, r - mid); m:X;dcq'3  
d&.)Dw  
for (i = l; i <= mid; i++) { LxsB.jb-  
temp = data; Ed_A#@V  
} TpZ)v.w~l7  
for (j = 1; j <= r - mid; j++) { Tx],- U  
temp[r - j + 1] = data[j + mid]; u=RF6V|  
} =;^2#UxXA&  
int a = temp[l]; ]7c715@  
int b = temp[r]; IuB0C!'  
for (i = l, j = r, k = l; k <= r; k++) { C!~&c7  
if (a < b) { Y/)>\  
data[k] = temp[i++]; Jr\4x7a;`~  
a = temp; NWv1g{M  
} else { :;)K>g,b  
data[k] = temp[j--]; UT]LF#.(  
b = temp[j]; #Z (B4YO  
} LI"ghz=F  
} & 7JCPw  
} 95?$O~I  
gbQrSJs!Zh  
/** &YqgMC  
* @param data %3'80u6BCJ  
* @param l e"[o2=v;5  
* @param i V mKMj'  
*/ Hco [p+  
private void insertSort(int[] data, int start, int len) { M(I 2M  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 0alm/or  
} v7xc01x  
} a:v&pj+|<  
} vYrqZie<  
} &*[T  
F|%[s|s  
堆排序: $WrDZU 2z  
>$?$&+e}  
package org.rut.util.algorithm.support; 5?%(j!p5  
j`='SzVloW  
import org.rut.util.algorithm.SortUtil; Y2QlK1.8V  
~48Uch\LG:  
/** LIirOf~e;!  
* @author treeroot 9.D'!  
* @since 2006-2-2 "4oY F:h  
* @version 1.0 %R-"5?eTtu  
*/ r;I 3N+  
public class HeapSort implements SortUtil.Sort{ qZG "{8  
-:AknQq  
/* (non-Javadoc) .)ZK42Qd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O: :X$O7  
*/ '@ (WT~g  
public void sort(int[] data) { FF)F%o+:w  
MaxHeap h=new MaxHeap(); !T#~.QP4  
h.init(data); ?b:l.0m  
for(int i=0;i h.remove(); )&;?|X+p  
System.arraycopy(h.queue,1,data,0,data.length); =Y?M#3P.I  
} nO,<`}pV  
7%&#V2  
private static class MaxHeap{ ?8)_,  
CAX|[  
void init(int[] data){ Ky|dRbK,  
this.queue=new int[data.length+1]; Vf`1'GY  
for(int i=0;i queue[++size]=data; /RIvUC1  
fixUp(size); #t>w)`bA-  
} sFT-aLpL@V  
} *"d"  
vxzh|uF  
private int size=0; OjCTTz  
%D)W~q-g  
private int[] queue; -WWa`,:  
c0sU1:e0  
public int get() { w[S2 ] <  
return queue[1]; XkDjA#nx`  
} E=_M=5]  
t,gKN^P_  
public void remove() { G&I\Za;   
SortUtil.swap(queue,1,size--); ps\A\aggML  
fixDown(1); e23}'qb  
} Fo|6 PoSo  
file://fixdown dq+VW}[EO  
private void fixDown(int k) { F.<sKQ&A  
int j; MDZ,a 0?4t  
while ((j = k << 1) <= size) { lfba   
if (j < size %26amp;%26amp; queue[j] j++; y'?ksow  
if (queue[k]>queue[j]) file://不用交换 U p=J&^.  
break; ae`*0wbv  
SortUtil.swap(queue,j,k); /o Q^j'v  
k = j; dO =fbmK  
} 52 ? TLID  
} />=)=CGv;  
private void fixUp(int k) { 9*pH[vH  
while (k > 1) { kTZ`RW&0  
int j = k >> 1; L  #c*)  
if (queue[j]>queue[k]) .Zv@iL5  
break; 9%55R >s$  
SortUtil.swap(queue,j,k); `irz'/"p  
k = j; r`Y[XzT9  
} FW~%xUSE5  
} ?:73O`sX:  
sOQF_X(.x  
} _+7 3Y'  
n]c6nX:'  
} xF![3~~3[  
cBs:7Pnp%  
SortUtil: pxy=edd  
;;#28nV  
package org.rut.util.algorithm; VUAW/  
nQm7At  
import org.rut.util.algorithm.support.BubbleSort; @AET.qGC  
import org.rut.util.algorithm.support.HeapSort; mux_S2x9m\  
import org.rut.util.algorithm.support.ImprovedMergeSort; H <7r  
import org.rut.util.algorithm.support.ImprovedQuickSort; TN!8J=sx.  
import org.rut.util.algorithm.support.InsertSort; r1dP9MT\8  
import org.rut.util.algorithm.support.MergeSort; Jse;@K5y  
import org.rut.util.algorithm.support.QuickSort; LE$_qX`L  
import org.rut.util.algorithm.support.SelectionSort;  &ig6\&1  
import org.rut.util.algorithm.support.ShellSort; r:.3P  
D&0y0lxI@  
/** _gDEIoBp  
* @author treeroot otaB$Bb  
* @since 2006-2-2 a ^wGc+  
* @version 1.0 www#.D%'U  
*/ "*E06=fiG  
public class SortUtil { !Q(xA,p  
public final static int INSERT = 1; aLa{zB  
public final static int BUBBLE = 2; a ;@G  
public final static int SELECTION = 3; Fb8~2N"3  
public final static int SHELL = 4; wNQhz.>y  
public final static int QUICK = 5; sv}k_6XgY  
public final static int IMPROVED_QUICK = 6; ?VUW.-  
public final static int MERGE = 7; e\o>(is  
public final static int IMPROVED_MERGE = 8; -36pkC 6 \  
public final static int HEAP = 9; LEu_RU?  
k/'>,WE  
public static void sort(int[] data) { l} \q }7\)  
sort(data, IMPROVED_QUICK); &USKudXmb  
} 0i%r+_E_  
private static String[] name={ SbrKNADH%  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 9*`(*>S  
}; /XEt2,sI9  
qRk<1.  
private static Sort[] impl=new Sort[]{ /4K ^-  
new InsertSort(), BF >67 8h  
new BubbleSort(), D=ZH? d  
new SelectionSort(), "}/$xOl"  
new ShellSort(), :<Z>?x  
new QuickSort(), :`U@b 6  
new ImprovedQuickSort(), {|:ro!&  
new MergeSort(), @ ={Hx$zL  
new ImprovedMergeSort(), j_w"HiNBA  
new HeapSort() i6Zsn#Z7)  
}; _d<xxF^q  
O4Z_v%2M  
public static String toString(int algorithm){ FR5P;Yz%H  
return name[algorithm-1]; acG4u+[ ]  
} '#Yqs/V  
_'OXrT#Q  
public static void sort(int[] data, int algorithm) { }wY6^JF  
impl[algorithm-1].sort(data); Lt|'("($*  
} CGYZEPRR  
<.d^jgG(j  
public static interface Sort { XXwe/>J  
public void sort(int[] data); Qg^Ga0Lf6  
} eW"L")  
cZVVJUF  
public static void swap(int[] data, int i, int j) { +c&oF,=}!P  
int temp = data; ON()2@Y4  
data = data[j]; ;&K +x@  
data[j] = temp; g+:Go9k!F  
} <r`^iR)%  
} IXA3G7$)  
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