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寻找最大子序列和
js
function findMax(arr) {
let res = arr[0];
let sum = 0;
for(let i = 0;i < arr.length;i ++) {
if(sum > 0) {
sum += arr[i];
} else {
sum = arr[i];
}
res = Math.max(res, sum);
}
return res;
}