时间:2021-07-01 10:21:17 帮助过:65人阅读
冒泡排序可谓是最经典的排序算法了,它是基于比较的排序算法,其优点是实现简单,排序数量较小时性能较好。
相邻的数据进行两两比较,小数放在前面,大数放在后面,如果前面的数据比后面的数据大,就交换这两个数的位置。也可以实现大数放在前面,小数放在后面,如果前面的数据比后面的小,就交换两个的位置。要实现上述规则需要用到两层for循环。
冒泡实现数组从小到大排序
var arr=[2,7,1,8,6,4,3,5,9]; function mintomax(par){ var length=par.length; for(var i=0; i<length-1; i++){ for(var j=0; j<length-i-1; j++){ if(par[j]>par[j+1]){ var temp=par[j+1]; par[j+1]=par[j]; par[j]=temp; } } } return par; } console.log(mintomax(arr));
冒泡实现数组从大到小排序
var arr=[2,7,1,8,6,4,3,5,9]; function maxtomin(par){ var length=par.length; for(var i=0; i<length-1; i++){ for(var j=0; j<length-i-1; j++){ if(par[j]<par[j+1]){ var temp=par[j+1]; par[j+1]=par[j]; par[j]=temp; } } } return par; } console.log(maxtomin(arr));
用es6结构赋值的方式重写上面代码
var arr=[2,7,1,8,6,4,3,5,9]; function mintomax(par){ var length=par.length; for(var i=0; i<length-1; i++){ for(var j=0; j<length-i-1; j++){ if(par[j]>par[j+1]){ [par[j],par[j+1]]=[par[j+1],par[j]] } } } return par; } console.log(mintomax(arr)); function maxtomin(par){ var length=par.length; for(var i=0; i<length-1; i++){ for(var j=0; j<length-i-1; j++){ if(par[j]<par[j+1]){ [par[j],par[j+1]]=[par[j+1],par[j]] } } } return par; } console.log(maxtomin(arr));
按照父子平铺顺序排序
var data = [{ ZDXM_STDCODE: '100101', ZDXM_STDNAME: '', FINA_YYSR: '', FINA_PGZHSY: '', FINA_SJZHSY: '', FINA_PGZHSYL: '', FINA_SJZHSYL: '', FINA_ZHSYLCE: '', FINA_SRJJL: '', FINA_JSSKL: '', FINA_HTE: '', GLZDXM: '1001', }, { ZDXM_STDCODE: '1001', ZDXM_STDNAME: '', FINA_YYSR: '', FINA_PGZHSY: '', FINA_SJZHSY: '', FINA_PGZHSYL: '', FINA_SJZHSYL: '', FINA_ZHSYLCE: '', FINA_SRJJL: '', FINA_JSSKL: '', FINA_HTE: '', GLZDXM: '', }, { ZDXM_STDCODE: '100102', ZDXM_STDNAME: '', FINA_YYSR: '', FINA_PGZHSY: '', FINA_SJZHSY: '', FINA_PGZHSYL: '', FINA_SJZHSYL: '', FINA_ZHSYLCE: '', FINA_SRJJL: '', FINA_JSSKL: '', FINA_HTE: '', GLZDXM: '1001', }, { ZDXM_STDCODE: '100201', ZDXM_STDNAME: '', FINA_YYSR: '', FINA_PGZHSY: '', FINA_SJZHSY: '', FINA_PGZHSYL: '', FINA_SJZHSYL: '', FINA_ZHSYLCE: '', FINA_SRJJL: '', FINA_JSSKL: '', FINA_HTE: '', GLZDXM: '1002', }, { ZDXM_STDCODE: '1002', ZDXM_STDNAME: '', FINA_YYSR: '', FINA_PGZHSY: '', FINA_SJZHSY: '', FINA_PGZHSYL: '', FINA_SJZHSYL: '', FINA_ZHSYLCE: '', FINA_SRJJL: '', FINA_JSSKL: '', FINA_HTE: '', GLZDXM: '', }, { ZDXM_STDCODE: '100202', ZDXM_STDNAME: '', FINA_YYSR: '', FINA_PGZHSY: '', FINA_SJZHSY: '', FINA_PGZHSYL: '', FINA_SJZHSYL: '', FINA_ZHSYLCE: '', FINA_SRJJL: '', FINA_JSSKL: '', FINA_HTE: '', GLZDXM: '1002', }, ] function datatotree(par) { var length = par.length; for (var i = 0; i < length-1; i++) { for (var j = 0; j < length - i - 1; j++) { var str1=par[j].GLZDXM+par[j].ZDXM_STDCODE; var str2=par[j+1].GLZDXM+par[j+1].ZDXM_STDCODE; if(par[j].GLZDXM==null){ str1=par[j].ZDXM_STDCODE; } if(data[j+1].GLZDXM==null){ str2=par[j+1].ZDXM_STDCODE; } if (str1 > str2) { var temp = par[j + 1]; par[j + 1] = par[j] par[j] = temp; } } } return par; } var data = datatotree(data) console.log(data);
按照es6结构赋值重写上面代码
var data = [{ ZDXM_STDCODE: '100101', ZDXM_STDNAME: '', FINA_YYSR: '', FINA_PGZHSY: '', FINA_SJZHSY: '', FINA_PGZHSYL: '', FINA_SJZHSYL: '', FINA_ZHSYLCE: '', FINA_SRJJL: '', FINA_JSSKL: '', FINA_HTE: '', GLZDXM: '1001', }, { ZDXM_STDCODE: '1001', ZDXM_STDNAME: '', FINA_YYSR: '', FINA_PGZHSY: '', FINA_SJZHSY: '', FINA_PGZHSYL: '', FINA_SJZHSYL: '', FINA_ZHSYLCE: '', FINA_SRJJL: '', FINA_JSSKL: '', FINA_HTE: '', GLZDXM: '', }, { ZDXM_STDCODE: '100102', ZDXM_STDNAME: '', FINA_YYSR: '', FINA_PGZHSY: '', FINA_SJZHSY: '', FINA_PGZHSYL: '', FINA_SJZHSYL: '', FINA_ZHSYLCE: '', FINA_SRJJL: '', FINA_JSSKL: '', FINA_HTE: '', GLZDXM: '1001', }, { ZDXM_STDCODE: '100201', ZDXM_STDNAME: '', FINA_YYSR: '', FINA_PGZHSY: '', FINA_SJZHSY: '', FINA_PGZHSYL: '', FINA_SJZHSYL: '', FINA_ZHSYLCE: '', FINA_SRJJL: '', FINA_JSSKL: '', FINA_HTE: '', GLZDXM: '1002', }, { ZDXM_STDCODE: '1002', ZDXM_STDNAME: '', FINA_YYSR: '', FINA_PGZHSY: '', FINA_SJZHSY: '', FINA_PGZHSYL: '', FINA_SJZHSYL: '', FINA_ZHSYLCE: '', FINA_SRJJL: '', FINA_JSSKL: '', FINA_HTE: '', GLZDXM: '', }, { ZDXM_STDCODE: '100202', ZDXM_STDNAME: '', FINA_YYSR: '', FINA_PGZHSY: '', FINA_SJZHSY: '', FINA_PGZHSYL: '', FINA_SJZHSYL: '', FINA_ZHSYLCE: '', FINA_SRJJL: '', FINA_JSSKL: '', FINA_HTE: '', GLZDXM: '1002', }, ] function datatotree(par) { var length = par.length; for (var i = 0; i < length-1; i++) { for (var j = 0; j < length - i - 1; j++) { var str1=par[j].GLZDXM+par[j].ZDXM_STDCODE; var str2=par[j+1].GLZDXM+par[j+1].ZDXM_STDCODE; if(par[j].GLZDXM==null){ str1=par[j].ZDXM_STDCODE; } if(data[j+1].GLZDXM==null){ str2=par[j+1].ZDXM_STDCODE; } if (str1 > str2) { [par[j],par[j+1]]=[par[j+1],par[j]]; } } } return par; } var data = datatotree(data) console.log(data);
上面代码排序之后结果
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