mirror of
https://github.com/krahets/hello-algo.git
synced 2025-07-14 11:36:08 +08:00
Fix the index out of bound check in my_list.
This commit is contained in:
@ -668,14 +668,14 @@ comments: true
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/* 访问元素 */
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public int get(int index) {
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// 索引如果越界则抛出异常,下同
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if (index >= size)
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if (index < 0 || index >= size)
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throw new IndexOutOfBoundsException("索引越界");
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return nums[index];
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}
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/* 更新元素 */
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public void set(int index, int num) {
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if (index >= size)
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if (index < 0 || index >= size)
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throw new IndexOutOfBoundsException("索引越界");
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nums[index] = num;
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}
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@ -692,7 +692,7 @@ comments: true
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/* 中间插入元素 */
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public void insert(int index, int num) {
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if (index >= size)
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if (index < 0 || index >= size)
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throw new IndexOutOfBoundsException("索引越界");
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// 元素数量超出容量时,触发扩容机制
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if (size == capacity())
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@ -708,7 +708,7 @@ comments: true
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/* 删除元素 */
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public int remove(int index) {
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if (index >= size)
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if (index < 0 || index >= size)
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throw new IndexOutOfBoundsException("索引越界");
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int num = nums[index];
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// 将索引 index 之后的元素都向前移动一位
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@ -766,14 +766,14 @@ comments: true
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/* 访问元素 */
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int get(int index) {
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// 索引如果越界则抛出异常,下同
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if (index >= size())
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if (index < 0 || index >= size())
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throw out_of_range("索引越界");
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return nums[index];
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}
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/* 更新元素 */
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void set(int index, int num) {
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if (index >= size())
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if (index < 0 || index >= size())
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throw out_of_range("索引越界");
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nums[index] = num;
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}
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@ -790,7 +790,7 @@ comments: true
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/* 中间插入元素 */
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void insert(int index, int num) {
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if (index >= size())
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if (index < 0 || index >= size())
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throw out_of_range("索引越界");
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// 元素数量超出容量时,触发扩容机制
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if (size() == capacity())
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@ -806,7 +806,7 @@ comments: true
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/* 删除元素 */
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int remove(int index) {
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if (index >= size())
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if (index < 0 || index >= size())
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throw out_of_range("索引越界");
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int num = nums[index];
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// 索引 i 之后的元素都向前移动一位
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@ -859,17 +859,17 @@ comments: true
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""" 访问元素 """
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def get(self, index):
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# 索引如果越界则抛出异常,下同
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assert index < self.__size, "索引越界"
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assert index >= 0 and index < self.__size, "索引越界"
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return self.__nums[index]
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""" 更新元素 """
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def set(self, num, index):
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assert index < self.__size, "索引越界"
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assert index >= 0 and index < self.__size, "索引越界"
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self.__nums[index] = num
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""" 中间插入(尾部添加)元素 """
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def add(self, num, index=-1):
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assert index < self.__size, "索引越界"
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assert index >= 0 and index < self.__size, "索引越界"
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# 若不指定索引 index ,则向数组尾部添加元素
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if index == -1:
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index = self.__size
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@ -885,12 +885,15 @@ comments: true
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""" 删除元素 """
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def remove(self, index):
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assert index < self.__size, "索引越界"
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assert index >= 0 and index < self.__size, "索引越界"
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num = self.nums[index]
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# 索引 i 之后的元素都向前移动一位
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for j in range(index, self.__size - 1):
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self.__nums[j] = self.__nums[j + 1]
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# 更新元素数量
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self.__size -= 1
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# 返回被删除元素
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return num
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""" 列表扩容 """
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def extend_capacity(self):
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@ -934,7 +937,7 @@ comments: true
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/* 访问元素 */
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func (l *myList) get(index int) int {
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// 索引如果越界则抛出异常,下同
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if index >= l.numsSize {
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if index < 0 || index >= l.numsSize {
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panic("索引越界")
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}
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return l.nums[index]
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@ -942,7 +945,7 @@ comments: true
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/* 更新元素 */
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func (l *myList) set(num, index int) {
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if index >= l.numsSize {
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if index < 0 || index >= l.numsSize {
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panic("索引越界")
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}
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l.nums[index] = num
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@ -961,7 +964,7 @@ comments: true
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/* 中间插入元素 */
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func (l *myList) insert(num, index int) {
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if index >= l.numsSize {
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if index < 0 || index >= l.numsSize {
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panic("索引越界")
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}
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// 元素数量超出容量时,触发扩容机制
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@ -979,7 +982,7 @@ comments: true
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/* 删除元素 */
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func (l *myList) remove(index int) int {
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if index >= l.numsSize {
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if index < 0 || index >= l.numsSize {
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panic("索引越界")
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}
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num := l.nums[index]
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@ -1030,15 +1033,15 @@ comments: true
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/* 访问元素 */
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get(index) {
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// 索引如果越界则抛出异常,下同
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if (index >= this.#size) {
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if (index < 0 || index >= this.#size)
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throw new Error('索引越界');
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}
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return this.#nums[index];
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}
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/* 更新元素 */
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set(index, num) {
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if (index >= this._size) throw new Error('索引越界');
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if (index < 0 || index >= this.#size)
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throw new Error('索引越界');
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this.#nums[index] = num;
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}
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@ -1055,9 +1058,8 @@ comments: true
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/* 中间插入元素 */
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insert(index, num) {
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if (index >= this.#size) {
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if (index < 0 || index >= this.#size)
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throw new Error('索引越界');
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}
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// 元素数量超出容量时,触发扩容机制
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if (this.#size === this.#capacity) {
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this.extendCapacity();
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@ -1073,7 +1075,8 @@ comments: true
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/* 删除元素 */
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remove(index) {
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if (index >= this.#size) throw new Error('索引越界');
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if (index < 0 || index >= this.#size)
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throw new Error('索引越界');
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let num = this.#nums[index];
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// 将索引 index 之后的元素都向前移动一位
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for (let j = index; j < this.#size - 1; j++) {
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@ -1125,24 +1128,23 @@ comments: true
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/* 访问元素 */
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public get(index: number): number {
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// 索引如果越界则抛出异常,下同
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if (index >= this._size) {
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if (index < 0 || index >= this._size)
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throw new Error('索引越界');
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}
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return this.nums[index];
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}
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/* 更新元素 */
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public set(index: number, num: number): void {
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if (index >= this._size) throw new Error('索引越界');
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if (index < 0 || index >= this._size)
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throw new Error('索引越界');
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this.nums[index] = num;
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}
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/* 尾部添加元素 */
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public add(num: number): void {
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// 如果长度等于容量,则需要扩容
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if (this._size === this._capacity) {
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if (this._size === this._capacity)
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this.extendCapacity();
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}
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// 将新元素添加到列表尾部
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this.nums[this._size] = num;
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this._size++;
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@ -1150,9 +1152,8 @@ comments: true
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/* 中间插入元素 */
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public insert(index: number, num: number): void {
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if (index >= this._size) {
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if (index < 0 || index >= this._size)
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throw new Error('索引越界');
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}
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// 元素数量超出容量时,触发扩容机制
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if (this._size === this._capacity) {
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this.extendCapacity();
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@ -1168,7 +1169,8 @@ comments: true
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/* 删除元素 */
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public remove(index: number): number {
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if (index >= this._size) throw new Error('索引越界');
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if (index < 0 || index >= this._size)
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throw new Error('索引越界');
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let num = this.nums[index];
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// 将索引 index 之后的元素都向前移动一位
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for (let j = index; j < this._size - 1; j++) {
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@ -1230,7 +1232,7 @@ comments: true
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public int Get(int index)
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{
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// 索引如果越界则抛出异常,下同
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if (index >= size)
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if (index < 0 || index >= size)
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throw new IndexOutOfRangeException("索引越界");
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return nums[index];
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}
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@ -1238,7 +1240,7 @@ comments: true
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/* 更新元素 */
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public void Set(int index, int num)
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{
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if (index >= size)
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if (index < 0 || index >= size)
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throw new IndexOutOfRangeException("索引越界");
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nums[index] = num;
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}
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@ -1257,7 +1259,7 @@ comments: true
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/* 中间插入元素 */
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public void Insert(int index, int num)
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{
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if (index >= size)
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if (index < 0 || index >= size)
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throw new IndexOutOfRangeException("索引越界");
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// 元素数量超出容量时,触发扩容机制
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if (size == Capacity())
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@ -1275,7 +1277,7 @@ comments: true
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/* 删除元素 */
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public int Remove(int index)
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{
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if (index >= size)
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if (index < 0 || index >= size)
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throw new IndexOutOfRangeException("索引越界");
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int num = nums[index];
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// 将索引 index 之后的元素都向前移动一位
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@ -1328,7 +1330,7 @@ comments: true
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/* 访问元素 */
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func get(index: Int) -> Int {
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// 索引如果越界则抛出错误,下同
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if index >= _size {
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if index < 0 || index >= _size {
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fatalError("索引越界")
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}
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return nums[index]
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@ -1336,7 +1338,7 @@ comments: true
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/* 更新元素 */
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func set(index: Int, num: Int) {
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if index >= _size {
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if index < 0 || index >= _size {
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fatalError("索引越界")
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}
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nums[index] = num
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@ -1355,7 +1357,7 @@ comments: true
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/* 中间插入元素 */
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func insert(index: Int, num: Int) {
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if index >= _size {
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if index < 0 || index >= _size {
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fatalError("索引越界")
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}
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// 元素数量超出容量时,触发扩容机制
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@ -1374,7 +1376,7 @@ comments: true
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/* 删除元素 */
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@discardableResult
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func remove(index: Int) -> Int {
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if index >= _size {
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if index < 0 || index >= _size {
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fatalError("索引越界")
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}
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let num = nums[index]
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@ -1395,14 +1397,5 @@ comments: true
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// 更新列表容量
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_capacity = nums.count
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}
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/* 将列表转换为数组 */
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func toArray() -> [Int] {
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var nums = Array(repeating: 0, count: _size)
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for i in 0 ..< _size {
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nums[i] = get(index: i)
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}
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return nums
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}
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}
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```
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