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
  • 8633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。 'KNUPi|  
插入排序: & =vi]z:[  
}e,*'mCC*  
package org.rut.util.algorithm.support; {E>(%vD  
k%cT38V*  
import org.rut.util.algorithm.SortUtil; [-Mfgw]i  
/** RXbZaje$  
* @author treeroot ]<E\J+5K  
* @since 2006-2-2 )XD$YI  
* @version 1.0 2` h  
*/ [UaM}-eR  
public class InsertSort implements SortUtil.Sort{ Y<`uq'V  
:WN*wd  
/* (non-Javadoc) e p\a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uTUkRqtD!  
*/ q%}54E80  
public void sort(int[] data) { -B#>Jn#F  
int temp; e_CgZ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); >c8EgSZJ  
} J$i5A9IUr  
} ais"xm<V  
} / CVhvK  
'd=B{7k@  
} h{M.+I$}C  
mmgIV&P  
冒泡排序: I)X33X,  
Ja#ti y  
package org.rut.util.algorithm.support; ZZ{:f+=?$  
#a"gW,/K  
import org.rut.util.algorithm.SortUtil; L(eLxw e%  
WMd5Y`y  
/** cYp]zn+6  
* @author treeroot V@Fj!/  
* @since 2006-2-2 keWqL]  
* @version 1.0 2p|[yZ  
*/ 'I roQ M  
public class BubbleSort implements SortUtil.Sort{ ojZvgF  
V,)bw  
/* (non-Javadoc)  h48 jKL(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) seEG~/U<  
*/ 3]}wZY0  
public void sort(int[] data) { } ^67HtNQ  
int temp; b7h0V4w  
for(int i=0;i for(int j=data.length-1;j>i;j--){ $ @cg+Xrg1  
if(data[j] SortUtil.swap(data,j,j-1); .#y.:Pb|e  
} p+ bT{:  
} =h9&`iwiu  
} ns,qj} #  
} c)OQ_3xOs  
PF?tEw_WB  
} juQQ  
}_L,Xg:I  
选择排序: Fm3B8Int  
Ks@  
package org.rut.util.algorithm.support; "]C$"JR  
]%VR Nm  
import org.rut.util.algorithm.SortUtil; t LZ4<wc  
 &(Ot(.  
/** u*J,3o} <  
* @author treeroot Jx8?x#}  
* @since 2006-2-2 ~4fjFo&_\  
* @version 1.0 Y^-faL7*\  
*/ w8df-]r  
public class SelectionSort implements SortUtil.Sort { L^zF@n^5A  
HqpwQ  
/* BHh%3Q  
* (non-Javadoc) {m/h3hjFa  
* ]N+(SU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WM_wkvY l  
*/ LD~/*  
public void sort(int[] data) { Eh&et0&=g  
int temp; =)GhrWeVi4  
for (int i = 0; i < data.length; i++) { m:,S1V_jl  
int lowIndex = i; H#l uG_)  
for (int j = data.length - 1; j > i; j--) { H_<X\(  
if (data[j] < data[lowIndex]) { s<t*g]0`/  
lowIndex = j; 7C%z 0/  
} rmOcA  
} X>`e(1`_O  
SortUtil.swap(data,i,lowIndex); prx)Cfv  
} CG(G){u&  
} l |c#  
M/X&zr  
} 3~7X2}qU  
.6m%/-whS  
Shell排序: 11s*C #  
D@5AI ](  
package org.rut.util.algorithm.support; ' ?3e1  
Rh:edQ #  
import org.rut.util.algorithm.SortUtil;  <V-D  
_S[@d^cY  
/** 451TTqc  
* @author treeroot CE19V:zp  
* @since 2006-2-2 spE(s%dgL  
* @version 1.0 "r Bb2.  
*/ XUrxnJ4  
public class ShellSort implements SortUtil.Sort{ qMrBTq[  
cZ{-h  
/* (non-Javadoc) $-zt,iRyV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H53dy*wb$  
*/ B1GBQH$Ms  
public void sort(int[] data) { GoK[tjb  
for(int i=data.length/2;i>2;i/=2){ ]YP J.[n  
for(int j=0;j insertSort(data,j,i); E{m\LUd^ :  
} I$7#Z!P6|  
} ]D@_cxud3  
insertSort(data,0,1); 8%qHy1  
} `J%iFm/5*  
+O 2H":$  
/** 9#CE m &c  
* @param data t7"vAjZU  
* @param j Uk=-A @q  
* @param i gn>qd6P  
*/ bcp+7b(IB  
private void insertSort(int[] data, int start, int inc) { 1Z5:D E<  
int temp; )zzK\I6/EQ  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); hP1H/=~  
} pDlU*&  
} Ka|WT|1  
} Lb2bzZbhx  
p<w2e  
} Q{ibH=^  
vKv!{>,v9Z  
快速排序: DM3W99PWA  
A.@S>H'P  
package org.rut.util.algorithm.support; biJ"@dm 4  
0:Ow$  
import org.rut.util.algorithm.SortUtil; `@$qy&AJ  
lLq:(zMH  
/** o& g0 1t  
* @author treeroot 'rZYl Qm  
* @since 2006-2-2 Cy'0O>v5  
* @version 1.0 BB&7VSgc-  
*/ <<,YgRl2  
public class QuickSort implements SortUtil.Sort{ Oq-O|qJj  
7q2G/_  
/* (non-Javadoc) =i_ s#v[Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3dlL?+Y#  
*/ /0PBY-O  
public void sort(int[] data) { .d) X.cO  
quickSort(data,0,data.length-1); TC7Rw}jF  
} j:)"s_  
private void quickSort(int[] data,int i,int j){ vhA 4ol  
int pivotIndex=(i+j)/2; >h?!6L- d  
file://swap n&? --9r  
SortUtil.swap(data,pivotIndex,j); D<-MbK^S  
^W&qTSjh  
int k=partition(data,i-1,j,data[j]); 9~ [Sio~  
SortUtil.swap(data,k,j); >}& :y{z~  
if((k-i)>1) quickSort(data,i,k-1); VI{!ZD]  
if((j-k)>1) quickSort(data,k+1,j); ^EK]z8;|  
(%&HufT  
} v{/z`J!JR  
/** A4lW8&rHI  
* @param data C5q n(tv  
* @param i tVB9kxtE  
* @param j f-lM[\ma_  
* @return nH6Ny  
*/ ia'eV10  
private int partition(int[] data, int l, int r,int pivot) { Q{s9{  
do{ fwe4f  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); JDTlzu1hR  
SortUtil.swap(data,l,r); op\'T;xIu  
} 3#O R fr(  
while(l SortUtil.swap(data,l,r); m&o6j>C  
return l; xc4g`Xi  
} _$g2;X >  
=UGyZV:z5  
} S}@J4}*u["  
kx6AMx!nX  
改进后的快速排序: k/ 6Qwb#  
Bu[sSoA  
package org.rut.util.algorithm.support; fl8~*\;Xu  
M0+xl+c+  
import org.rut.util.algorithm.SortUtil; 4f)B@A-  
g4Y1*`}2f  
/** m?Tv8-1  
* @author treeroot C`4m#  
* @since 2006-2-2 %25GplMT  
* @version 1.0 d) i:-#Q  
*/ fVb~j;  
public class ImprovedQuickSort implements SortUtil.Sort { >iZ"#1ZL2O  
[{}Hk%wlX  
private static int MAX_STACK_SIZE=4096; fD^$ y 8  
private static int THRESHOLD=10; 7gX#^YkE+k  
/* (non-Javadoc) +v!% z(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Zb p+b;  
*/ v:$Ka@v6  
public void sort(int[] data) { K{]9Yo  
int[] stack=new int[MAX_STACK_SIZE]; zWN<"[agc  
c#-o@`Po  
int top=-1; v- 793pr  
int pivot; 0| a,bwZ  
int pivotIndex,l,r; mE|?0mRA %  
XfYMv38(  
stack[++top]=0; %QYH]DR  
stack[++top]=data.length-1; {WYJQKs8  
ECZ`I Z.  
while(top>0){ h83W;s  
int j=stack[top--]; U*p;N,SjQ  
int i=stack[top--]; !HV<2q()  
z CS.P.$  
pivotIndex=(i+j)/2; e-Pn,j  
pivot=data[pivotIndex]; <"GgqyRzv  
WQJnWe   
SortUtil.swap(data,pivotIndex,j); ?M<q95pL  
3PLYC}Jq  
file://partition PVCFh$pnw  
l=i-1; C2X$bX"  
r=j; bfE4.YF  
do{ uZ1b_e0SGu  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); |c<h& p  
SortUtil.swap(data,l,r); bR\Oyd~e  
} j aU.hASj  
while(l SortUtil.swap(data,l,r); rEoMj)~\4&  
SortUtil.swap(data,l,j); i9RAb tQ}  
(aeS+d x  
if((l-i)>THRESHOLD){ ro %Jg  
stack[++top]=i; l;~b:[r  
stack[++top]=l-1; 8q}955Nl  
} 4X}.aZO&b  
if((j-l)>THRESHOLD){ =._V$:a6o  
stack[++top]=l+1; ~W>3EJghR,  
stack[++top]=j; M:PEY*4H  
} HQy:,_f@  
cF2!By3M  
} ++gWyzD  
file://new InsertSort().sort(data); !l(O$T9 T  
insertSort(data); J,W<vrKOcN  
}  l_2B  
/** 0x Er`]]U  
* @param data 'vP"& lrn  
*/ _9pcHhJux  
private void insertSort(int[] data) { z]49dCN  
int temp; I(5sKU3<  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); B7 #O>a  
} Jyz*W!kI  
} q*^m8  
} D;Bij=  
Qo5yfdR  
} -$A >b8  
\ cr)O^&  
归并排序: (i1q".  
,6EFJVu \  
package org.rut.util.algorithm.support; pXhN?joe  
znkc@8_4  
import org.rut.util.algorithm.SortUtil; p=d,kY  
Ux!q(9<_  
/** <Od5}  
* @author treeroot (g*mC7 HN  
* @since 2006-2-2 y0R9[ ;b07  
* @version 1.0 %(X^GL  
*/ :'$V7LZ5  
public class MergeSort implements SortUtil.Sort{ yt4sg/] :  
.',d*H))E7  
/* (non-Javadoc) *-vH64e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,Qh9}I7;C  
*/ .3 S9=d?  
public void sort(int[] data) { =^5#o)~BB  
int[] temp=new int[data.length]; d%~OEq1i"  
mergeSort(data,temp,0,data.length-1); 1)BIh~1{p  
} N|3a(mtiZ'  
DUMC4+i  
private void mergeSort(int[] data,int[] temp,int l,int r){ '3uN]-A>D  
int mid=(l+r)/2; = j!nt8]8  
if(l==r) return ; x,fX mgE  
mergeSort(data,temp,l,mid); @TraEBJGL  
mergeSort(data,temp,mid+1,r); KlGmO;k  
for(int i=l;i<=r;i++){  84g8$~M  
temp=data; $fhR1A  
} UfNcI[xr  
int i1=l; Njmb{L]Cps  
int i2=mid+1; :5-t$^R  
for(int cur=l;cur<=r;cur++){ 0-~F%:x  
if(i1==mid+1) uE ^uP@d  
data[cur]=temp[i2++]; "MPr'3  
else if(i2>r) $lAQcG&Q  
data[cur]=temp[i1++]; q |Orv =v  
else if(temp[i1] data[cur]=temp[i1++]; @#>YU  
else tE$oV  
data[cur]=temp[i2++]; }I"k=>Ycns  
} V2B: DIpr  
} G@4n]c_  
L$3{L"/   
} 7csMk5NU'<  
Qm)c!  
改进后的归并排序: S^:7V[=EgI  
=KW~k7TaN  
package org.rut.util.algorithm.support; 3>#io^35  
Jz@2?wSp  
import org.rut.util.algorithm.SortUtil; VfT@;B6ALF  
1 uJpn  
/** K9_@[}Ge  
* @author treeroot lhBu?q  
* @since 2006-2-2 (J5M+K\H  
* @version 1.0 u|sdQ  
*/ EG J/r  
public class ImprovedMergeSort implements SortUtil.Sort { AkEt=vI  
ayZWt| iHA  
private static final int THRESHOLD = 10; k0IztFyj:R  
dk_! ~Z  
/* e% #?B *  
* (non-Javadoc) ~93#L_V_O  
*  q!as~{!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n%d7`?tm4  
*/ +EvY-mwfQ  
public void sort(int[] data) { -1%AM40j  
int[] temp=new int[data.length]; m+EtB6r  
mergeSort(data,temp,0,data.length-1); Kwo0%2Onkd  
} 5n1T7-QCL  
d:g0XP  
private void mergeSort(int[] data, int[] temp, int l, int r) { 2rrC y C  
int i, j, k; #^9a[ZLj0  
int mid = (l + r) / 2; tKCX0UZ'  
if (l == r) ,xg(F0q  
return; <.U(%`|  
if ((mid - l) >= THRESHOLD) +-PFISa<r  
mergeSort(data, temp, l, mid); gCZm7dgo  
else M!O &\2Q  
insertSort(data, l, mid - l + 1); }UWi[UgA  
if ((r - mid) > THRESHOLD) '^`%  
mergeSort(data, temp, mid + 1, r); | W<jN  
else roNs~]6  
insertSort(data, mid + 1, r - mid); vPET'Bf(YV  
]DK.4\^  
for (i = l; i <= mid; i++) { PX5U)  
temp = data; |D~#9  
} [g@ .dr3t  
for (j = 1; j <= r - mid; j++) { !U~S7h}  
temp[r - j + 1] = data[j + mid]; MNH-SQB|  
} n=%D}W  
int a = temp[l]; B18?)LA  
int b = temp[r]; BUU ) Sz  
for (i = l, j = r, k = l; k <= r; k++) { #F:\_!2c  
if (a < b) { >]/aG!  
data[k] = temp[i++]; tREC)+*\  
a = temp; S!g0J}.z  
} else { f"d4HZD^  
data[k] = temp[j--]; (2'q~Z+>'  
b = temp[j]; )'e9(4[V1  
} V ee;&  
} f=Kt[|%'e  
} ~?:Xi_3Lo  
VRvX^w0  
/** vve[.Lud'  
* @param data f= 33+8I  
* @param l JA "  
* @param i %P`|kPW1  
*/ l/6(V:  
private void insertSort(int[] data, int start, int len) { M*<Bp   
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); W-ol*S  
} F5YHc$3^  
} =f=,YcRn+  
} 5`f\[oA  
} D|"^ :Gi  
H  2UR  
堆排序: k^Uk= )9  
~.<}/GP]_  
package org.rut.util.algorithm.support; p&cJo<]=LE  
c3|/8  
import org.rut.util.algorithm.SortUtil; 7w5 L?,a  
ziG]BZ  
/** fXB64MNo  
* @author treeroot j(`V& S  
* @since 2006-2-2 [p 8fg!|  
* @version 1.0 br7_P1ep  
*/ #brV{dHV,  
public class HeapSort implements SortUtil.Sort{ S0mF %"  
E@S5|CM  
/* (non-Javadoc) -% g{{'9B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) few=`%/  
*/ D(^ |'1  
public void sort(int[] data) { = RQ\i6Y  
MaxHeap h=new MaxHeap(); bcE%EQ  
h.init(data); ^|h})OHV  
for(int i=0;i h.remove(); TF;}NQ  
System.arraycopy(h.queue,1,data,0,data.length); O-YB +~"3Z  
} <j$n7#qk  
Q )b*; @  
private static class MaxHeap{ < &~KYu\r  
kqie|_y  
void init(int[] data){ YQk<1./}I  
this.queue=new int[data.length+1]; STH?X] /  
for(int i=0;i queue[++size]=data; 3gzcpFNqX  
fixUp(size); <xWBS/K  
} 6 su^yt  
} N#? Ohz  
`:fc*n,*  
private int size=0; Q-LDFnOFwp  
y 2v69nu~q  
private int[] queue; #aV2+`d  
Q #%C)7)  
public int get() { |p7k2wzN  
return queue[1]; A&~<qgBTp  
} l;gj],*  
(ON_(MN  
public void remove() { G~\ SI.  
SortUtil.swap(queue,1,size--); fm%1vM$[J  
fixDown(1); 9 O/l{  
} ^?3e?Q?  
file://fixdown (YJ]}J^  
private void fixDown(int k) { 4vk^=  
int j; }m6j6uAR6)  
while ((j = k << 1) <= size) { n xc35  
if (j < size %26amp;%26amp; queue[j] j++; mjd9]HgN  
if (queue[k]>queue[j]) file://不用交换 K{)YnY_E;  
break; m%hUvG| i  
SortUtil.swap(queue,j,k); gZs UX^%  
k = j; Z-!W#   
} XVfp* `  
} $^2 j#]uX  
private void fixUp(int k) { 1z\>>N$7B  
while (k > 1) { :z EhPx;B7  
int j = k >> 1; *Iu .>nw  
if (queue[j]>queue[k]) h%Nbx:vKk  
break; 9 xvE?8;M#  
SortUtil.swap(queue,j,k); Xjal6e)[  
k = j; J!@$lyH  
} J jCzCA:K_  
} p[QF3)9F  
p1=sDsLL  
} 'y#kRC=G:  
RoXU>a:nS  
} NC; 4  
MR90}wXE  
SortUtil: {.We%{4V  
$ V"~\h8  
package org.rut.util.algorithm; VY'#>k} }  
2w=0&wG4K  
import org.rut.util.algorithm.support.BubbleSort; Zcg=a_  
import org.rut.util.algorithm.support.HeapSort; 4"e7 43(  
import org.rut.util.algorithm.support.ImprovedMergeSort; )T6+}   
import org.rut.util.algorithm.support.ImprovedQuickSort; T8.@ }a  
import org.rut.util.algorithm.support.InsertSort; uOEFb  
import org.rut.util.algorithm.support.MergeSort; ku*|?uF  
import org.rut.util.algorithm.support.QuickSort; {Ex0mw)T  
import org.rut.util.algorithm.support.SelectionSort; q_8qowu"  
import org.rut.util.algorithm.support.ShellSort; K \}xb2s  
snTj!rV/_  
/** A+j~oR  
* @author treeroot {y|y68y0+  
* @since 2006-2-2 l}X3uy S  
* @version 1.0 J#CF SG  
*/ d]h[]Su/?  
public class SortUtil { MB\vgKY  
public final static int INSERT = 1; H BmjB=  
public final static int BUBBLE = 2; ;w?zmj<Dm  
public final static int SELECTION = 3; ^!|BKH8>f%  
public final static int SHELL = 4; J3Q.6e=7  
public final static int QUICK = 5; ~s{$&N  
public final static int IMPROVED_QUICK = 6; R+Ke|C  
public final static int MERGE = 7; P/t$xqAL  
public final static int IMPROVED_MERGE = 8; Ssaf RK$  
public final static int HEAP = 9; kaUH#;c>_  
k+-u 4W   
public static void sort(int[] data) { LL-MZ~ZB  
sort(data, IMPROVED_QUICK); e )\s0#  
} yA(H=L-=!1  
private static String[] name={ 6ssZg@}nf{  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 2N(c&Dzkh`  
}; *8"5mC ;"  
&e[/F@\%  
private static Sort[] impl=new Sort[]{ 1h]Dc(Oc#=  
new InsertSort(), L<QqQ"`  
new BubbleSort(), [ OMcSd|nf  
new SelectionSort(), &e_M \D  
new ShellSort(), yXrFH@3  
new QuickSort(), J_U1eSz<j  
new ImprovedQuickSort(), 6}Y^X  
new MergeSort(), suPQlU>2sj  
new ImprovedMergeSort(), 0?SdAF[:z  
new HeapSort() Dw;L=4F |  
}; )F]E[sga  
(sO;etW  
public static String toString(int algorithm){ &^qD<eZ!Eq  
return name[algorithm-1]; rN$_(%m_N  
} ]O7I7K  
7u\^$25+h  
public static void sort(int[] data, int algorithm) { $>5|TG 0i  
impl[algorithm-1].sort(data); b V;R}3)  
} "]5]"F4]  
"=9L7.E)  
public static interface Sort { gGe `w  
public void sort(int[] data); N}VKH5U|  
} qN}0$x>p  
vlm&)DIt  
public static void swap(int[] data, int i, int j) { <G\q/!@_  
int temp = data; yWF DGk  
data = data[j]; XL g6?Nu  
data[j] = temp; 1/6G&RB  
} n/S1Hae`  
} hM/|k0YV  
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
欢迎提供真实交流,考虑发帖者的感受
认证码:
验证问题:
3+5=?,请输入中文答案:八 正确答案:八