// 最长公共子前缀
var testStrList = ['abcd','abc','abcdmg','aggg']
function longCommon1(list){
let first = list[0]
for(let i = 0;i < first.length;i++){
let str = first.charAt(i)
for(let j = 1;j<list.length;j++){
if(i == list[j].length || str !== list[j].charAt(i)){
return first.substring(0, i)
}
}
}
}
function longCommon(list) {
if(list.length == 0){
return ''
}
let result = list[0]
for(let i = 0; i < list.length; i++) {
while(list[i].indexOf(result) != 0) {
console.log('1',list[i],result)
result = result.substring(0, result.length - 1);
console.log('2',list[i],result)
if(result.length == 0) {
return "";
}
}
}
return result;
}
console.log(longCommon1(testStrList))
