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
  • 6130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。 .)L%ANf  
插入排序: Z<L|WRe  
!n9H[QP^9  
package org.rut.util.algorithm.support; 04ZP\  
#-5.G>8  
import org.rut.util.algorithm.SortUtil; W^{zlg  
/** `}t<5_  
* @author treeroot qxKW% {6o  
* @since 2006-2-2 {j$:9  H  
* @version 1.0 2P3,\L  
*/ [B<htD&  
public class InsertSort implements SortUtil.Sort{ 0c6b_%Rd  
KE>|,U r  
/* (non-Javadoc) v_M-:e3`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xQLVFgd  
*/ 1iNq|~  
public void sort(int[] data) { Vwxb6,}Z  
int temp; P2la/jN  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); bMe/jQuL.$  
} &QHZ]2%U  
} gR7in!8  
} D%[yAr;r  
mX8k4$z  
} .[mI9dc  
Hw"Lo Vh  
冒泡排序: r<< ]41  
t&5N{C:  
package org.rut.util.algorithm.support; O5X@'.#rU  
in}d(%3h  
import org.rut.util.algorithm.SortUtil; z~8`xn,  
JZ=ahSi  
/** w[ )97d  
* @author treeroot e_U1}{=t  
* @since 2006-2-2 dsJMhB_41U  
* @version 1.0 :g&9v_}&K{  
*/ s{g^K#BoFi  
public class BubbleSort implements SortUtil.Sort{ R( 2,1f=d  
vwF#;jj\  
/* (non-Javadoc) O_vCZW a3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KHnq%#  
*/ tqo k.h  
public void sort(int[] data) { f/"? (7F  
int temp; % YgGw:wZ  
for(int i=0;i for(int j=data.length-1;j>i;j--){ :pz`bFJk  
if(data[j] SortUtil.swap(data,j,j-1); N{b ;kiZq  
} M3m)uiz  
} b}&2j3-n,  
} UdGa#rcNW  
} DIAHI V<  
fHFy5j0H  
} ||p>O  
''p7!V?  
选择排序: prypo.RI  
0c{-$K}  
package org.rut.util.algorithm.support; q>X30g  
JWB3;,S  
import org.rut.util.algorithm.SortUtil; AFMIp^F  
9Rf})$o+  
/** ^9_4#Ep(  
* @author treeroot tJ 3Hg8;  
* @since 2006-2-2 "}|&eBH^<  
* @version 1.0 +"yt/9AO  
*/ $3yzB9\a"  
public class SelectionSort implements SortUtil.Sort { %imI.6   
F7!q18ew  
/* tBB\^xq:  
* (non-Javadoc) `8x.Mv  
* D MzDV_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2)-V\:;js  
*/ V1l9T_;f  
public void sort(int[] data) { K>a@AXC  
int temp; bM@8[&t a  
for (int i = 0; i < data.length; i++) { Ca]V%g(  
int lowIndex = i; Aq]*$s2\G  
for (int j = data.length - 1; j > i; j--) { @Z+(J:Grm5  
if (data[j] < data[lowIndex]) { Xi  8rD"v  
lowIndex = j; +uqP:z  
} U"T>L  
} s[dq-pc "  
SortUtil.swap(data,i,lowIndex); +.3,(l  
} cXDG(.!n7B  
} K?J?]VCw  
=w,cdU*  
} KtMD?  
V#Pz `D  
Shell排序: d,V]j-  
RCC~#bb  
package org.rut.util.algorithm.support; gH u!~l  
Au"7w=G`f  
import org.rut.util.algorithm.SortUtil; m[w 8|[  
GZx?vSoHh  
/** M[:},?ah0  
* @author treeroot -dO9y=?t  
* @since 2006-2-2 B[IqLD'6  
* @version 1.0 Z*Lv!6WS  
*/ o0 &pSCK  
public class ShellSort implements SortUtil.Sort{ .E/NlGm[  
cedH#;V!j  
/* (non-Javadoc) ]"X} FU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .dw;b~p  
*/ :k&5Z`>)  
public void sort(int[] data) { _GtG8ebr  
for(int i=data.length/2;i>2;i/=2){ 1)N~0)dO  
for(int j=0;j insertSort(data,j,i); p=jIDM'  
} vVfIe5+OP  
} -. J@  
insertSort(data,0,1); 2;`F` }BA  
} <&m `)FJ  
HUWCCVn&  
/** +cf.In,{  
* @param data N*{>8iFo4  
* @param j R64/m9  
* @param i (i)Ed9~F"  
*/ L=v"5)m2R  
private void insertSort(int[] data, int start, int inc) { p+.{"%  
int temp; 6>e YG <y{  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); \!J9|  
} {!av3Pz\  
} =JDa[_lpN  
} sqjv3=}  
<x->.R_  
} !fT3mI6u\  
_usi~m  
快速排序: k 1sR^&{l  
j"J[dlm2M  
package org.rut.util.algorithm.support; ]/TqPOi:  
 $hgsWa  
import org.rut.util.algorithm.SortUtil; |$QL>{81  
Fq`wx  
/** _VFL}<i  
* @author treeroot Z#_+yw  
* @since 2006-2-2 hcJny  
* @version 1.0 cuUlr  
*/ noSBwP| v*  
public class QuickSort implements SortUtil.Sort{ M].D27  
?]Z EK8c  
/* (non-Javadoc) bA*T1Db,t>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O ]Stf7]%;  
*/ O~u@J'4  
public void sort(int[] data) { H'2Un(#Al  
quickSort(data,0,data.length-1); eGW~4zU  
} n%%u0a %  
private void quickSort(int[] data,int i,int j){ 4K<T_B/  
int pivotIndex=(i+j)/2; 38HnW  
file://swap 6JZ$; x{j  
SortUtil.swap(data,pivotIndex,j); 6~y7A<[^  
<cx,Z5W  
int k=partition(data,i-1,j,data[j]); .:?cU#.  
SortUtil.swap(data,k,j); $/XR/  
if((k-i)>1) quickSort(data,i,k-1); rxM)SC;P  
if((j-k)>1) quickSort(data,k+1,j); 99mo]1_  
@uzzyp r>  
} AOVoOd+6  
/** A_}%YHb  
* @param data 3!<} -sW4  
* @param i B_uAa5'  
* @param j oHj64fE9  
* @return u4,b%h.  
*/ @"$rR+r'  
private int partition(int[] data, int l, int r,int pivot) { ^{(i;IVG  
do{ 5^GFN*poig  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); VQ]MJjvb  
SortUtil.swap(data,l,r); /`YbHYNF[  
} .|Bmg6g*  
while(l SortUtil.swap(data,l,r); 0Q= o"@  
return l;  l6uU S  
} /*2sg>e'QF  
%\n&iRwDF  
} \y*,N^wu  
4}t&AW4  
改进后的快速排序: WKB@9Vfju  
/naGn@m5u  
package org.rut.util.algorithm.support; 7IV:X _y  
R404\XGL  
import org.rut.util.algorithm.SortUtil; ;th]/ G  
Hz] p]  
/** DJ#z0)3<p  
* @author treeroot {Vj25Gt  
* @since 2006-2-2 q7'[II;  
* @version 1.0 0Fi&7%  
*/ W2 ([vRT  
public class ImprovedQuickSort implements SortUtil.Sort { ok+-#~VTn  
avI   
private static int MAX_STACK_SIZE=4096; &ivPY  
private static int THRESHOLD=10; }bxx]rDl  
/* (non-Javadoc) oL 69w1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bAl0z)p  
*/  GP/G v  
public void sort(int[] data) { 05>xQx?"m4  
int[] stack=new int[MAX_STACK_SIZE]; FII>6c  
raPUx_$PH  
int top=-1; 7L=V{,,v  
int pivot; ;"@FLq(n  
int pivotIndex,l,r; bk#t+tuk  
}hjJt,m  
stack[++top]=0; :/ yR  
stack[++top]=data.length-1; 4{1 .[##]o  
;PrL)!  
while(top>0){ ?fXlrJ  
int j=stack[top--]; k-M-=VvA  
int i=stack[top--]; b[I;6HW  
2r]!$ hto  
pivotIndex=(i+j)/2; <Gr775"  
pivot=data[pivotIndex]; }nW)+  
P!JRIw  
SortUtil.swap(data,pivotIndex,j); }ST0?_0F*  
yv!,iK9  
file://partition ^9Je8 @Yu  
l=i-1; @Fl&@ $  
r=j; cKj6tT"=O  
do{ Cq0S8Or0  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); H@8g 9;+  
SortUtil.swap(data,l,r); UkY `&&ic  
} (n~ e2tZ/  
while(l SortUtil.swap(data,l,r); 7 i |_PP_  
SortUtil.swap(data,l,j); L,F )l2  
G*f5B  
if((l-i)>THRESHOLD){ = +uUWJ&1G  
stack[++top]=i; ?+bDFM}  
stack[++top]=l-1; Wo^r#iRko  
} vG<JOxP  
if((j-l)>THRESHOLD){ >iCkvQ  
stack[++top]=l+1; sO!YM5v8  
stack[++top]=j; Bi +a)_K  
} W,^(FR.  
uW,L<;HnQ  
} 3t4_{']:/  
file://new InsertSort().sort(data); "16-K%}  
insertSort(data); f'\NGL  
} B0:[3@P7  
/** Q(}TN,N  
* @param data ~!,Q<?  
*/ | ZI~#V  
private void insertSort(int[] data) { g8{?;  
int temp; f]BG`rJX  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); E&/D%}Wl  
} "5-S:+  
} V+()`>44  
} oj7X9~ nd  
w:z@!<  
} tzxp0&:Z].  
@ P=eu3  
归并排序: ezt_ct/Z  
A;sdrA  
package org.rut.util.algorithm.support; &B^vHH  
~[i,f0O,  
import org.rut.util.algorithm.SortUtil; CMIjc(m  
COw]1 R  
/** `O5kI#m)L*  
* @author treeroot #_+T@|r  
* @since 2006-2-2 H]. 4~ 8  
* @version 1.0 u_o>v{&i  
*/ 6NCa=9  
public class MergeSort implements SortUtil.Sort{ 6t5)rlT  
dm Lgt)-t  
/* (non-Javadoc) A}#@(ma7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bl>MD8bzLE  
*/ Qr;es,f  
public void sort(int[] data) { "Yn <]Pa_  
int[] temp=new int[data.length]; 62}bs/%  
mergeSort(data,temp,0,data.length-1); &Z+a (  
} )>ed6A1  
[|2uu."$  
private void mergeSort(int[] data,int[] temp,int l,int r){ @NXGVmY1}  
int mid=(l+r)/2; $J #}3;a  
if(l==r) return ; \<VwGbzFi  
mergeSort(data,temp,l,mid); ?S8cl7;+  
mergeSort(data,temp,mid+1,r); Y962rZ  
for(int i=l;i<=r;i++){ x7J|  
temp=data; rbnu:+!  
} UcMe("U  
int i1=l; >qn@E?Uf  
int i2=mid+1; }TRr*] P<%  
for(int cur=l;cur<=r;cur++){ W|T"'M_  
if(i1==mid+1) .ukP)rGe  
data[cur]=temp[i2++]; [&rW+/  
else if(i2>r) 0>-l {4srs  
data[cur]=temp[i1++]; @T1/S&F=  
else if(temp[i1] data[cur]=temp[i1++]; i\B >J?Q\  
else lC6#EU;  
data[cur]=temp[i2++]; Kbc-$ oneR  
} L_jwM ^8  
} _Bh-*l?K>  
k 6~k  
} :&`Yz   
c3|;'s  
改进后的归并排序: ^Y xqJy  
?Z] }G  
package org.rut.util.algorithm.support; o><~.T=d&  
_c%]RE  
import org.rut.util.algorithm.SortUtil;  UJoWTx  
F5%-6@=  
/** 3vOI=ar=L~  
* @author treeroot qTiUha9  
* @since 2006-2-2 C%v@ u$N  
* @version 1.0 -,96Qg4vI  
*/ ##,i<  
public class ImprovedMergeSort implements SortUtil.Sort { 4aAr|!8|h!  
0i$jtCCL(  
private static final int THRESHOLD = 10; C4Q ^WU+$j  
#JZf]rtp  
/* x#| P-^  
* (non-Javadoc) 6(oGU4  
* lw? f2_fi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w"-bO ~5h  
*/ V/|Ln*rm  
public void sort(int[] data) { t9m: E  
int[] temp=new int[data.length]; E[LXZh  
mergeSort(data,temp,0,data.length-1); g i:;{  
} Ih`n:aA  
YjS|Ht->  
private void mergeSort(int[] data, int[] temp, int l, int r) { J mFzSR?}  
int i, j, k; YFLWkdqAY  
int mid = (l + r) / 2; m |,ocz  
if (l == r) gSu+]N  
return; .gT@_.ZD9  
if ((mid - l) >= THRESHOLD) 8&ZUkDGkJ  
mergeSort(data, temp, l, mid); R]/F{Xs  
else ^k^%w/fo  
insertSort(data, l, mid - l + 1); b_Ba0h=  
if ((r - mid) > THRESHOLD) I]Wb\&$  
mergeSort(data, temp, mid + 1, r); )TyL3Z\>(  
else r7*[k[^[^  
insertSort(data, mid + 1, r - mid); ~srmlBi6  
7z=Ss'O]  
for (i = l; i <= mid; i++) { TDY}oGmNn  
temp = data; +zs;>'Sf  
} <g,k[  
for (j = 1; j <= r - mid; j++) { O(/K@e  
temp[r - j + 1] = data[j + mid]; 1WcT>_$  
} J~<:yBup}  
int a = temp[l]; 4pq>R  
int b = temp[r]; ?Dm!;Z+7  
for (i = l, j = r, k = l; k <= r; k++) { H:9( XW  
if (a < b) { DfV_08  
data[k] = temp[i++]; wGISb\rr  
a = temp; ffm19B=  
} else { 5yxZ 5Ni!  
data[k] = temp[j--]; |=38t8Ge&  
b = temp[j]; o|alL-  
} Cj5M  
} ~v,LFIT  
} )OH!<jW  
i>,5b1x~  
/**  IO>Cyo  
* @param data [ Q=) f  
* @param l sTv/;*  
* @param i 7\a(Imq  
*/ 3QUe:8  
private void insertSort(int[] data, int start, int len) { D9H|]W~   
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); <ze' o.c  
} C)#:zv m  
} `?=AgGg  
} qg.[M*  
} !h&hPY1  
_vU,avw  
堆排序: oi"Bf7{  
z0g]nYN%  
package org.rut.util.algorithm.support; c q3C N@  
(eO0 Ic[c  
import org.rut.util.algorithm.SortUtil; A2rr>  
j*QY_Ny*  
/** J4lE7aFDA~  
* @author treeroot W11_MTIU  
* @since 2006-2-2 2[M:WZ.1  
* @version 1.0 &g) `  
*/ m(g$T  
public class HeapSort implements SortUtil.Sort{ B}P,sFghw  
eX_}KH-Q  
/* (non-Javadoc) tinN$o Xy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =/dW5qy;*+  
*/ sSD(mO<(  
public void sort(int[] data) { IUc!nxF#  
MaxHeap h=new MaxHeap(); ItOVx!"@9  
h.init(data); 5QS d$J  
for(int i=0;i h.remove(); `i{o8l  
System.arraycopy(h.queue,1,data,0,data.length); >r]# 77d  
} Mh_jlgE'd#  
k,?Y`s  
private static class MaxHeap{ z=ppNP0  
Nb]qY>K  
void init(int[] data){ )b!q  
this.queue=new int[data.length+1]; <o?qpW$,>  
for(int i=0;i queue[++size]=data; 8<.KWr  
fixUp(size); #v(+3Hp  
} _|tg#i|Om  
} ' {:(4>&  
4vBbP;ELWq  
private int size=0; mH8s'F  
B[$KnQM9Y  
private int[] queue; 2EK\QWo  
B0 R[f  
public int get() { L</"m[  
return queue[1]; gXw\_ue<  
} }#E4t3  
/ m?Z!  
public void remove() { a~XNRAh  
SortUtil.swap(queue,1,size--); :K8T\  
fixDown(1); ,Y!T!o} 1  
} ~s5Sk#.z5  
file://fixdown DK)qBxc8  
private void fixDown(int k) { cJ[n<hTv  
int j; b<5:7C9z  
while ((j = k << 1) <= size) { Vn8Qsf1f  
if (j < size %26amp;%26amp; queue[j] j++; ,vN#U&RS  
if (queue[k]>queue[j]) file://不用交换 ( I,V+v+{Y  
break; %0u7pk  
SortUtil.swap(queue,j,k); h/_z QR-  
k = j; !J2Lp  
} slQKkx \Dn  
} Kw?,A   
private void fixUp(int k) { W%h<@@c4,  
while (k > 1) { E-"Jgq\aC  
int j = k >> 1; MESQAsx%  
if (queue[j]>queue[k]) BC4u,4S  
break; a[#4Oq/t$  
SortUtil.swap(queue,j,k); f%@Y XGf  
k = j; t"BpaA^gO  
} ekAGzu  
} RNt3az  
"+XO[WGc  
} +ubO-A?  
9f"6Jw@F  
} Wq>j;\3b3  
nK96A.B%p  
SortUtil: uox;PDK  
vF([mOZ  
package org.rut.util.algorithm; 0cS.|\ZTA  
vMC;5r6*d  
import org.rut.util.algorithm.support.BubbleSort; &=7ur  
import org.rut.util.algorithm.support.HeapSort; ~O^_J)  
import org.rut.util.algorithm.support.ImprovedMergeSort; h2BD?y  
import org.rut.util.algorithm.support.ImprovedQuickSort; Bo~wD|E2  
import org.rut.util.algorithm.support.InsertSort; _D+7w'8h  
import org.rut.util.algorithm.support.MergeSort; +b{h*WWdj  
import org.rut.util.algorithm.support.QuickSort; {u5)zVYC,U  
import org.rut.util.algorithm.support.SelectionSort; 49kY]z|"w  
import org.rut.util.algorithm.support.ShellSort; yNN2}\[.  
6U""TR!   
/** qBwqxxTc  
* @author treeroot \+>b W(  
* @since 2006-2-2 T[;{AXLeI  
* @version 1.0 $==hr^H  
*/ =o HJ_  
public class SortUtil { <]!IC]+  
public final static int INSERT = 1; |owhF  
public final static int BUBBLE = 2; (h%wO  
public final static int SELECTION = 3; i$NnHj|  
public final static int SHELL = 4; jgO{DNe(=  
public final static int QUICK = 5; )O+9 v}2  
public final static int IMPROVED_QUICK = 6; 5GRN1Aov<  
public final static int MERGE = 7; nC*/?y*9  
public final static int IMPROVED_MERGE = 8; Ugs<WVp$  
public final static int HEAP = 9; vu#:D1/BB  
<w:fR|O  
public static void sort(int[] data) { IM@Qe|5  
sort(data, IMPROVED_QUICK); LvAIAknc  
} HR V/ A  
private static String[] name={ >:Oo[{)  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" f9 rToH  
}; YA|*$$  
%NBD^g F  
private static Sort[] impl=new Sort[]{ ;L)}blN.  
new InsertSort(), 5N6%N1  
new BubbleSort(), `BvcI n4do  
new SelectionSort(), n}+ DO6J  
new ShellSort(),  {jl4`  
new QuickSort(), +`4|,K7'  
new ImprovedQuickSort(), TwkzX|  
new MergeSort(), AsLAm#zq  
new ImprovedMergeSort(), Du{]r[[C  
new HeapSort() N;w1f"V}  
}; 8sIGJ|ku   
Gmwn:  
public static String toString(int algorithm){ `rcjZ^n  
return name[algorithm-1]; H;CGLis  
} UFl*^j_)]  
e (f)?H  
public static void sort(int[] data, int algorithm) { JDs<1@\  
impl[algorithm-1].sort(data); (>jME  
} U8c0C/  
g5"g,SFGr  
public static interface Sort { Z4e?zY  
public void sort(int[] data); dYsqF 3f  
} \i&yR]LF  
3Q#VD)  
public static void swap(int[] data, int i, int j) { Ff,M ~zn  
int temp = data; %_u3Np  
data = data[j]; IFE C_F>  
data[j] = temp; x;SrJVDN  
} 4*54"[9Hr#  
} *= D$  
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
如果您提交过一次失败了,可以用”恢复数据”来恢复帖子内容
认证码:
验证问题:
10+5=?,请输入中文答案:十五