社区应用 最新帖子 精华区 社区服务 会员列表 统计排行 社区论坛任务 迷你宠物
  • 5845阅读
  • 0回复

[JAVA]用Java实现的各种排序

级别: 终身会员
发帖
3743
铜板
8
人品值
493
贡献值
9
交易币
0
好评度
3746
信誉值
0
金币
0
所在楼道
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。 m:Rm(ga9  
插入排序: iQ1[60?)T  
Wb#<ctM>  
package org.rut.util.algorithm.support; L>&{<M_  
pAq PHD=  
import org.rut.util.algorithm.SortUtil; 8kr$w$=q  
/** XiV K4sD8  
* @author treeroot -e?n4YO*\  
* @since 2006-2-2 VKw.g@BY  
* @version 1.0 XR p60i6f  
*/ ,\1Rf.  
public class InsertSort implements SortUtil.Sort{ N)a5~<fBG  
osmCwM4O  
/* (non-Javadoc) '66nqJb*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QFN9j  
*/ Cs,Cb2[  
public void sort(int[] data) {  _VM}]A  
int temp; XbeT x  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); h,-i\8gq  
} #Ye0*`  
} pIug$Ke_%  
} H;@0L}Nu+}  
*a0#PfS[  
} aIr"!. 4  
F&^&"(H}  
冒泡排序: 1{RA\CF  
T~SkFZ  
package org.rut.util.algorithm.support; %Wm)  
( Rp5g}b  
import org.rut.util.algorithm.SortUtil; #7sxb  
m*h O@M  
/** ~(NFjCUY?  
* @author treeroot 1K)9fMr]  
* @since 2006-2-2 AAuwE&Gg  
* @version 1.0 cVarvueS  
*/ =Lb(N61  
public class BubbleSort implements SortUtil.Sort{ /UY'E<wBx  
BT^=p  
/* (non-Javadoc) nB[B FVkU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0S }\ML  
*/ cG3tn&AXi  
public void sort(int[] data) { Lpnw(r9Y  
int temp; }5z!FXB  
for(int i=0;i for(int j=data.length-1;j>i;j--){ "4T36b  
if(data[j] SortUtil.swap(data,j,j-1); s<:) ;-tL  
} &oJ[ *pQ  
} a@9W'/?igk  
} xF YHv@g  
} Xk:3w,  
8/y8tMm]  
} J-azBi  
|%rRALIY  
选择排序: u*oP:!s  
M\Wg|gpy  
package org.rut.util.algorithm.support; V`i(vC(  
Zs;c0T ">  
import org.rut.util.algorithm.SortUtil; 9"L!A,&'  
{ i4`- w  
/** ,6f6r  
* @author treeroot v}z^M_eFm  
* @since 2006-2-2 %m/5! "  
* @version 1.0 3RD+;^}q 3  
*/ {A%&D^o)  
public class SelectionSort implements SortUtil.Sort { muBl~6_mb2  
pN)>c,  
/* )(1tDQ`L>  
* (non-Javadoc)  n$>_2v  
* vS:=%@c>ta  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R!\._m?\h  
*/ Wcl =YB%  
public void sort(int[] data) { Gg:W%&#  
int temp; uKJo5%>  
for (int i = 0; i < data.length; i++) { EpCNp FQT<  
int lowIndex = i; LW/> %  
for (int j = data.length - 1; j > i; j--) { xa !/.  
if (data[j] < data[lowIndex]) { B[f:T%  
lowIndex = j; ?i!d00X  
} >>;He7  
} x #|t#N%  
SortUtil.swap(data,i,lowIndex); JuRWR0@`  
}  (tT%rj!  
} w*(1qUF#%  
gF;C% }  
} Ly1t'{"7  
Q'j00/K  
Shell排序: 46 |LIc }  
=NPo<^Lae  
package org.rut.util.algorithm.support; })q8{Qj!  
/nt%VLms %  
import org.rut.util.algorithm.SortUtil; :g-vy9vb  
Y8fel2;  
/** !NKPy+v  
* @author treeroot [s%uE+``S  
* @since 2006-2-2 g(S4i%\  
* @version 1.0 1p SEr6  
*/  ZLf(m35  
public class ShellSort implements SortUtil.Sort{ A9Pq}3U  
K!-iDaVI  
/* (non-Javadoc) k^s7s{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) & ##JZ  
*/ THy   
public void sort(int[] data) { ,W_".aguX  
for(int i=data.length/2;i>2;i/=2){ g`"_+x'  
for(int j=0;j insertSort(data,j,i); M{Vi4ehOq  
} / =v1.9(  
} C [8='i26  
insertSort(data,0,1); I=YZ!*f/`  
} $UdFm8&  
jT-tsQ .,  
/** Go~3L8 '  
* @param data 6HpiG`  
* @param j : D !/.0  
* @param i <c [X^8   
*/ KJV],6d  
private void insertSort(int[] data, int start, int inc) { FuFICF7+C  
int temp; SuBUhzR  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 6Q*zZ]kg  
} T\7t#Z k  
} nv: VX{%  
} N'21I$D  
{Z~ze`N/  
} Eqx|k-<a  
j<w5xY  
快速排序: Z22#lF\N  
;`a~9uG  
package org.rut.util.algorithm.support; iTCY $)J  
q~xs4?n1U  
import org.rut.util.algorithm.SortUtil; ^c){N-G  
S;nlC  
/** ^Uik{x  
* @author treeroot DM(c :+K-  
* @since 2006-2-2 ^X:g C9  
* @version 1.0 .bRDz:?j  
*/ bHz H0v]:  
public class QuickSort implements SortUtil.Sort{ CraD  
v0pev;C  
/* (non-Javadoc) x!?$y_t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0j' Xi_uM  
*/ Y1{*AV6ev6  
public void sort(int[] data) { 5d)\Z0s  
quickSort(data,0,data.length-1);  ` EVy  
} l?x'R("{  
private void quickSort(int[] data,int i,int j){ L@G~9{U>  
int pivotIndex=(i+j)/2; ;\Pq  
file://swap Z. xOO|  
SortUtil.swap(data,pivotIndex,j); xK_0@6  
 .V l  
int k=partition(data,i-1,j,data[j]); TF@k{_f  
SortUtil.swap(data,k,j); _Oc\hW  
if((k-i)>1) quickSort(data,i,k-1); j$z!kd+%  
if((j-k)>1) quickSort(data,k+1,j); (Lkcx06e  
=UZQ` {  
} X@:@1+U  
/** 1?".R]<{2T  
* @param data 1X#gHstD  
* @param i v)v`896S`  
* @param j j[:Iu#VR  
* @return vUJQ<D  
*/ [-3x*?Ju  
private int partition(int[] data, int l, int r,int pivot) { kY~o3p<  
do{ 6CNxb  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Mqmy*m[U  
SortUtil.swap(data,l,r); 5VE9DTE  
} A_|X54}w&  
while(l SortUtil.swap(data,l,r); 7KV0g1GQ  
return l; VyOpPIP  
} mX@!O[f%9e  
-JXCO <~k  
} 9Pdol!  
2P?|'U  
改进后的快速排序: Q::_i"?c  
_Xfn  
package org.rut.util.algorithm.support; JZoH -  
$HFimU,V=0  
import org.rut.util.algorithm.SortUtil; B>e},!  
?&@a{-  
/** j\uPOn8k  
* @author treeroot >s>{+6e  
* @since 2006-2-2 dpB\=  
* @version 1.0 x I(X+d``  
*/ A04E <nr  
public class ImprovedQuickSort implements SortUtil.Sort { PO]c&}/  
o/I`L  
private static int MAX_STACK_SIZE=4096; $`|\aXd[C*  
private static int THRESHOLD=10; 7[YulC-pH  
/* (non-Javadoc) GFYHt!&[\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UiN6-{v<2  
*/ 91}kBj  
public void sort(int[] data) { ko`KAU<T_  
int[] stack=new int[MAX_STACK_SIZE]; SfGl*2  
R9^R G-x  
int top=-1; `:fh$V5J>  
int pivot; I?Q[ZH:M  
int pivotIndex,l,r; @-aMj  
QfI@=Kbg%#  
stack[++top]=0; 3t:/Guyom8  
stack[++top]=data.length-1; &h;J_Ps  
Kbqx)E$iL  
while(top>0){ D+CP?} /  
int j=stack[top--]; b%UbTb,  
int i=stack[top--]; k6^!G"  
eq7>-Dmi@  
pivotIndex=(i+j)/2; ]+@I] \S4  
pivot=data[pivotIndex]; $/$ 5{<  
C{FE*@U.  
SortUtil.swap(data,pivotIndex,j); hta y-  
})5I/   
file://partition 7tU=5@M9D  
l=i-1;  sf'+;  
r=j; 7H_*1_%ZQ  
do{ *T0!q#R  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); yMKVF`D*  
SortUtil.swap(data,l,r); t@3y9U$  
} w8(z\G_0  
while(l SortUtil.swap(data,l,r); h)sQ3B.}A  
SortUtil.swap(data,l,j); l]Q<BV  
*.A{p ;JC(  
if((l-i)>THRESHOLD){ 3mLtnRX[m  
stack[++top]=i; {M P (*N  
stack[++top]=l-1; )~ghb"K  
} U$wD'v3pw  
if((j-l)>THRESHOLD){ t}f,j^`e  
stack[++top]=l+1; #0 eop>O  
stack[++top]=j; QK(w2`  
} 7uxUqM  
@ wx  
} V-w{~  
file://new InsertSort().sort(data); Y]: Ch (Q  
insertSort(data); |&AZ95v   
} Tu_4kUCR!f  
/** ^y<8 &ZFH  
* @param data Vae=Yg=fw  
*/ iJ!p9E*(  
private void insertSort(int[] data) { wdQ%L4l  
int temp; ngC^@*XAw9  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {9<c*0l  
} +L|-W9"@3  
} \jHIjFwQ  
} w ;xbQZ|+  
bTW# f$q:4  
} RKO}  W#?  
XywsjeI4  
归并排序: l1ViUY&Z  
^#)]ICV  
package org.rut.util.algorithm.support; tQmuok4"d  
N7mYE  
import org.rut.util.algorithm.SortUtil; hmr2(f%U  
d3tr9B  
/** GVUZn//  
* @author treeroot +9R@cUr  
* @since 2006-2-2 lka Wwjv_D  
* @version 1.0 cX4I+Mf  
*/ F`RPXY`ux  
public class MergeSort implements SortUtil.Sort{ %SN"<O!  
4s7&*dJ  
/* (non-Javadoc) u/(~ew I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O("13cU  
*/ 8>a%L?BY  
public void sort(int[] data) { {P!1VYs5  
int[] temp=new int[data.length]; c^x5 E`{  
mergeSort(data,temp,0,data.length-1); @"O|[%7e  
} K%WG[p\Eu  
Q ?R3aJ  
private void mergeSort(int[] data,int[] temp,int l,int r){ 0vrx5E!  
int mid=(l+r)/2; v&8s>~i`K  
if(l==r) return ; #(G"ya  
mergeSort(data,temp,l,mid); \<W/Z.}/  
mergeSort(data,temp,mid+1,r); 5LJ0V  
for(int i=l;i<=r;i++){ qcGsx2  
temp=data; -DL"Yw}  
} dd:vQOF;  
int i1=l; >h{)7Hv  
int i2=mid+1; }}gtz-w  
for(int cur=l;cur<=r;cur++){ J)._&O$  
if(i1==mid+1) 0Q!/A5z  
data[cur]=temp[i2++]; !YENJJ  
else if(i2>r) cN%@ nW0i  
data[cur]=temp[i1++]; KK, t!a  
else if(temp[i1] data[cur]=temp[i1++]; -xL^UcG0  
else |wGmu&fY  
data[cur]=temp[i2++]; ^:Fj+d  
} F-%Hw  
} -SUK [<=X  
\t?rHB3"  
} h8hyQd$!  
*1g3,NMA  
改进后的归并排序: k]9+/ $  
tx,q=.(  
package org.rut.util.algorithm.support; rBZ0Fx$/[  
W}'l8z]   
import org.rut.util.algorithm.SortUtil; Mew,g:m:  
U%rq(`;  
/** H_FT%`iM  
* @author treeroot ;C,t`(  
* @since 2006-2-2 JiFB<Q\  
* @version 1.0 c;.jo?RR2  
*/ 4n6t(/]b<  
public class ImprovedMergeSort implements SortUtil.Sort { ,C0D|q4/!.  
7[ZoUWx  
private static final int THRESHOLD = 10; vE&K!k`  
t_w2J=2  
/* Y@ X>ejk"  
* (non-Javadoc) )LTX.Kg  
* N^f_hL|:9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r-$VPW  
*/ q0L\{  
public void sort(int[] data) { *> E_lWW.  
int[] temp=new int[data.length]; W:JR\KKU  
mergeSort(data,temp,0,data.length-1); o'K= X E  
} ([dJ'OPx$  
O'h f8w  
private void mergeSort(int[] data, int[] temp, int l, int r) { dF$&fo%  
int i, j, k; ;e0-FF+  
int mid = (l + r) / 2; & X#6jTh+  
if (l == r) (Rh$0^)A  
return; 2hsRYh  
if ((mid - l) >= THRESHOLD) y 'Ah*h  
mergeSort(data, temp, l, mid); A$70!5*  
else bMB*9<c~  
insertSort(data, l, mid - l + 1); <RuLIu  
if ((r - mid) > THRESHOLD) {'sp8:$a  
mergeSort(data, temp, mid + 1, r); %\T#Ik~3  
else m\G45%m  
insertSort(data, mid + 1, r - mid); #@L5yy2  
1|:'jK#gE  
for (i = l; i <= mid; i++) { /<1zzeHRSD  
temp = data; +h@ZnFp3  
} oc;4;A-;`c  
for (j = 1; j <= r - mid; j++) { DdqE6qE  
temp[r - j + 1] = data[j + mid]; xM=?ES  
} Jk;dtLL}4  
int a = temp[l]; QXEz  
int b = temp[r]; ~rlPS#]o  
for (i = l, j = r, k = l; k <= r; k++) { !GnwE  
if (a < b) { g[ N3jt@  
data[k] = temp[i++]; TjicltQi4  
a = temp; QY c/f"9  
} else { W:hTRq  
data[k] = temp[j--]; 2`J#)f|  
b = temp[j]; lUd4`r"  
} [*1:?mD$  
} M)3'\x :  
} )v\ A8)[  
'm0_pM1:D  
/** y+h/jEbM</  
* @param data Yf_/c*t\5  
* @param l Cd|rDa  
* @param i 80K"u[  
*/ |k#EYf#Y  
private void insertSort(int[] data, int start, int len) { pgPm0+N  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); E+cx 8(   
} :9f 9Z7M  
} hISYtNWjd"  
} +2>, -V  
} Cz6bD$5  
.>1vN+  
堆排序: ? (M$r\\  
baGV]=j  
package org.rut.util.algorithm.support; e5(c,,/  
.|0$?w  
import org.rut.util.algorithm.SortUtil; ^%O$7*  
<Ok7 -:OxA  
/** }U?:al/m  
* @author treeroot o1thGttVDg  
* @since 2006-2-2 [9yd29pQ]  
* @version 1.0 ; W$.>*O  
*/ .E;}.X  
public class HeapSort implements SortUtil.Sort{ Ld 0j!II(  
`4wy *!]  
/* (non-Javadoc) 0-p %.}GE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5t|$Yt[  
*/ LI>Bl  
public void sort(int[] data) { h{ZK;(u$  
MaxHeap h=new MaxHeap(); r,q.RWuII  
h.init(data); !LCy:>i!d  
for(int i=0;i h.remove(); A4 /gVi|  
System.arraycopy(h.queue,1,data,0,data.length); >:h&5@^ j$  
} lQxEiDIL  
bnN&E?{hF1  
private static class MaxHeap{ W9]0X  
*0m|`- T  
void init(int[] data){ iD/+#UTY  
this.queue=new int[data.length+1]; O"1HO[  
for(int i=0;i queue[++size]=data; !Wj`U$];  
fixUp(size); jOZ>^5}  
} =&PO_t5)z  
} hqV_MeHv'  
@u`m6``T  
private int size=0; yq!peFu  
Y=,9M  
private int[] queue; Gn4XVzB`O  
b>]UNf"-  
public int get() { r@PVSH/  
return queue[1]; ?;A\>sP  
} GK1P7Qy?V  
=i6k[rg  
public void remove() { %vbov}R  
SortUtil.swap(queue,1,size--); _+Z5qUmQ  
fixDown(1); !wC( ]Y  
} /T 2 v`Li  
file://fixdown J!">L+Zcx  
private void fixDown(int k) { &'Xgf!x  
int j; ?v`24p3PC  
while ((j = k << 1) <= size) { ilZQ/hOBH  
if (j < size %26amp;%26amp; queue[j] j++; {asq[;]  
if (queue[k]>queue[j]) file://不用交换 PKd'lo  
break; X{:3UTBR  
SortUtil.swap(queue,j,k); >h.HW  
k = j; rr>6;  
} K5z<n0X ~  
} OTNI@jQ)  
private void fixUp(int k) { @'y8* _  
while (k > 1) { +pQ3bX  
int j = k >> 1; A)&CI6(  
if (queue[j]>queue[k]) w|NId,#f  
break; 0QyL}y2  
SortUtil.swap(queue,j,k); (EH}lh }%  
k = j; @z:E]O}  
} L uW""P/  
} B~b ='jN  
uMRzUK`QK  
} 40z1Qkmaey  
,W;|K 5  
} Bn.5ivF3  
\jZ)r>US"  
SortUtil: ]@~%i=. 7  
U }I#;*F  
package org.rut.util.algorithm; "p+JME(  
&he:_p$x  
import org.rut.util.algorithm.support.BubbleSort; xNa66A-8  
import org.rut.util.algorithm.support.HeapSort; qnqS^K,':  
import org.rut.util.algorithm.support.ImprovedMergeSort; Z$%!H7w  
import org.rut.util.algorithm.support.ImprovedQuickSort; (W}DMcuSd  
import org.rut.util.algorithm.support.InsertSort; /SyAjZ  
import org.rut.util.algorithm.support.MergeSort; G<]@nP{P  
import org.rut.util.algorithm.support.QuickSort; f8G<5_!K_  
import org.rut.util.algorithm.support.SelectionSort; -9Ygn_M  
import org.rut.util.algorithm.support.ShellSort; aj=-^iGG  
/1uGsE+[  
/** L(9AcP  
* @author treeroot [)il_3t  
* @since 2006-2-2 {s8g;yU5  
* @version 1.0 s#8T46?  
*/ 9<kMxtk$  
public class SortUtil { ?mN!9/DIc  
public final static int INSERT = 1; yo%Nz"  
public final static int BUBBLE = 2; `?f<hIJoz  
public final static int SELECTION = 3; M1T.  
public final static int SHELL = 4; m"6K_4r]  
public final static int QUICK = 5; 'I:_}q  
public final static int IMPROVED_QUICK = 6; Bwu?DK  
public final static int MERGE = 7; IkxoW:L  
public final static int IMPROVED_MERGE = 8; `$FB[Z} &  
public final static int HEAP = 9; qE VpkvEq  
P + C5 s  
public static void sort(int[] data) { Zv* uUe  
sort(data, IMPROVED_QUICK); AYfe_Dj  
} s,l*=<  
private static String[] name={ BuUM~k&SY  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap"  vNdW.V}  
}; P>^$X  
"z= ~7g  
private static Sort[] impl=new Sort[]{ t:xTmK&vt  
new InsertSort(), 8 qZbsZi4  
new BubbleSort(), =k;X}/  
new SelectionSort(), OMd:#cWsQ  
new ShellSort(), (+<66 T O  
new QuickSort(), 5=}CZYWB  
new ImprovedQuickSort(), /LtbmV  
new MergeSort(), Sz]1`%_H/  
new ImprovedMergeSort(), #r1y|)m`  
new HeapSort() }5}>B *  
}; [Z&<# -  
Zq H-]?)  
public static String toString(int algorithm){ y,@yaM}-/K  
return name[algorithm-1]; . ~a~(|  
} h cu\c+ A  
<q Q@OUI   
public static void sort(int[] data, int algorithm) { E>O@Bv  
impl[algorithm-1].sort(data); de[NIDA;`  
} `LKf$cx(A  
;%cW[*Dw  
public static interface Sort { 25r3[gX9`  
public void sort(int[] data); '@IReMl  
} B__e*d:)!m  
.9Dncsnf,`  
public static void swap(int[] data, int i, int j) { N9M",(WTt}  
int temp = data; Vup|*d2r0E  
data = data[j]; -KfMK N~  
data[j] = temp; {xTh!ih2 -  
} UPPlm\wb*  
} WP=uHg  
评价一下你浏览此帖子的感受

精彩

感动

搞笑

开心

愤怒

无聊

灌水
描述
快速回复

您目前还是游客,请 登录注册
如果您在写长篇帖子又不马上发表,建议存为草稿
认证码:
验证问题:
3+5=?,请输入中文答案:八 正确答案:八