Day1

https://leetcode-cn.com/problems/add-to-array-form-of-integer/

/**
num = [2,7,4], k = 181
2 + 1, 7 + 8, 4 + 1
*/
function addToArrayForm(num: number[], k: number): number[] {
  const result: number[] = [];
  const len = num.length;
  for(let i = len - 1; i >= 0; i--) {
    let sum = num[i] + k % 10;
    k = Math.floor(k / 10);
    // 需要进位
    if (sum >= 10) {
      k = k + 1
      sum = sum - 10;
    }
    result.push(sum)
  }
  // 处理k的数字长度大于数组的数字长度
  for (; k > 0; k = Math.floor(k / 10)) {
    result.push(k % 10)
  }
  return result.reverse();
};

function curry(func: Function) {
  const len = func.length;
  return function inner(...args) {
    if (args.length >= len) {
        return func.apply(null, args);
    }
    return inner.bind(null, ...args);
  }
}

function sum(a, b, c) {
  return a + b + c;
}

let curriedSum = curry(sum);

console.log(curriedSum(1, 2, 3)); // 6, still callable normally
console.log(curriedSum(1)(2, 3)); // 6, currying of 1st arg
console.log(curriedSum(1)(2)(3)); // 6, full currying