64 lines
1.5 KiB
Java
64 lines
1.5 KiB
Java
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public class Matrix {
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private int[][] m;
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public void init(int[][] base_m) {
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this.m = base_m;
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}
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public int[][] getMatrix() {
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return this.m;
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}
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public void print() {
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for (int[] ml : this.m) {
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for (int e : ml) {
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System.out.printf("%4d ", e);
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}
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System.out.println();
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}
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}
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public void transpose() {
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print();
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if (this.m[0].length != this.m.length) {
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int new_h = this.m[0].length;
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int new_w = this.m.length;
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int[][] new_m = new int[new_h][new_w];
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for (int i = 0; i < this.m.length; i++) {
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for (int j = 0; j < this.m[i].length; j++) {
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new_m[j][i] = this.m[i][j];
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}
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}
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this.m = new_m;
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} else {
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// if a matrix is square, there is no need to
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// make a new one
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int temp_value_holder;
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for (int i = 0; i < this.m.length; i++) {
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for (int j = 0; j < i; j++) {
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temp_value_holder = this.m[i][j];
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this.m[i][j] = this.m[j][i];
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this.m[j][i] = temp_value_holder;
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}
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}
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}
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}
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public double getAvg() {
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double total = 0;
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for (int[] ml : this.m) {
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for (int e : ml) {
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total += e;
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}
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}
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return total / (this.m.length * this.m[0].length);
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}
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}
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